HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept
{
"count": 5435,
"next": "https://hermes.lco.global/api/v0/nonlocalizedevents/?format=api&limit=100&offset=100",
"previous": null,
"results": [
{
"event_id": "S230518h",
"sequences": [],
"references": [
{
"id": 137,
"topic": "gcn.circular",
"uuid": "8af4a663-f9f6-4bcb-9a28-35a15120f9f4",
"title": "LIGO/Virgo/KAGRA S230518h: Upper limits from a two-week IceCube neutrino search",
"submitter": "Hop gcn.circular",
"authors": "Jessie Thwaites at IceCube/U Wisc-Madison <thwaites@wisc.edu>",
"data": {
"date": "23/06/02 22:04:10 GMT",
"from": "Jessie Thwaites at IceCube/U Wisc-Madison <thwaites@wisc.edu>",
"title": "GCN CIRCULAR",
"number": "33907",
"subject": "LIGO/Virgo/KAGRA S230518h: Upper limits from a two-week IceCube neutrino search"
},
"message_text": "IceCube Collaboration (http://icecube.wisc.edu/) reports:\n\nIceCube has performed an additional search [1] for track-like muon neutrino events consistent with the sky localization of gravitational-wave candidate S230518h in a time range of -0.1 day, +14 days from the alert event time (2023-05-18 10:35:08.016 UTC to 2023-06-01 12:59:08.016 UTC).\n\nDuring this time period IceCube was collecting good quality data. In this case, we report a p-value of 0.73, consistent with no significant excess of track events. IceCube's sensitivity assuming an E^-2 spectrum (E^2 dN/dE) to neutrino point sources within the locations spanned by the 90% spatial containment of the 4-Update map ranges from 0.028 to 1.219 GeV cm^-2 in this time window.\n\nThe IceCube Neutrino Observatory is a cubic-kilometer neutrino detector operating at the geographic South Pole, Antarctica. The IceCube realtime alert point of contact can be reached at roc@icecube.wisc.edu.\n\n[1] Abbasi et al. Astrophys.J. 944 (2023) 1, 80\n\n",
"published": "2023-06-02T22:04:19.088698Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-02T22:04:19.088717Z",
"modified": "2023-06-02T22:04:19.095801Z",
"targets": []
},
{
"id": 86,
"topic": "gcn.circular",
"uuid": "52142084-2da3-4524-ac44-4ad8a2f8a013",
"title": "LIGO/Virgo/KAGRA S230518h: Updated Sky localization",
"submitter": "Hop gcn.circular",
"authors": "Deep Chatterjee at MIT <deep.chatterjee@ligo.org>",
"data": {
"date": "23/05/26 22:24:59 GMT",
"from": "Deep Chatterjee at MIT <deep.chatterjee@ligo.org>",
"title": "GCN CIRCULAR",
"number": "33884",
"subject": "LIGO/Virgo/KAGRA S230518h: Updated Sky localization"
},
"message_text": "The LIGO Scientific Collaboration, the Virgo Collaboration, and the KAGRA Collaboration report:\n\nWe have conducted further offline analysis of the LIGO Hanford Observatory (H1) and LIGO Livingston Observatory (L1) data around the time of the compact binary merger (CBC) candidate S230518h (GCN Circular 33816). Parameter estimation has been performed using Bilby [1] and a new sky map, Bilby.offline0.multiorder.fits,0, distributed via GCN Notice, is available for retrieval from the GraceDB event page:\n\nhttps://gracedb.ligo.org/superevents/S230518h\n\nFor the Bilby.offline0.multiorder.fits,0 sky map, the 90% credible region is 460 deg2. Marginalized over the whole sky, the a posteriori\nluminosity distance estimate is 204 +/- 57 Mpc (a posteriori mean +/- standard deviation).\n\nFor further information about analysis methodology and the contents of this alert, refer to the LIGO/Virgo/KAGRA Public Alerts User Guide <https://emfollow.docs.ligo.org/userguide/>.\n\n [1] Ashton et al. ApJS 241, 27 (2019)\n\n",
"published": "2023-05-26T22:25:08.153333Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-05-26T22:25:08.153355Z",
"modified": "2023-05-26T22:25:08.159523Z",
"targets": []
},
{
"id": 83,
"topic": "gcn.circular",
"uuid": "cf9ff53a-eaf1-4432-bc36-74edff13977b",
"title": "LIGO/Virgo/KAGRA S230518h: Upper limits from Glowbug gamma-ray observations",
"submitter": "Hop gcn.circular",
"authors": "matthew.kerr@gmail.com",
"data": {
"date": "23/05/26 17:28:30 GMT",
"from": "matthew.kerr@gmail.com",
"title": "GCN CIRCULAR",
"number": "33881",
"subject": "LIGO/Virgo/KAGRA S230518h: Upper limits from Glowbug gamma-ray observations"
},
"message_text": "M. Kerr, J. E. Grove, C.C. Cheung, R. Woolf (Naval Research Laboratory) and A. Goldstein (USRA) report:\n\nThe compact binary merger candidate S230518h (event time, T0 = 2023-05-18 12:59:08.167 UTC) was identified by the LIGO Observatory (H1, L1) during its engineering run prior to the start of the O4 observing run (GCN 33813).\nThe Glowbug gamma-ray instrument [1,2], launched in March 2023, observed much of the sky to which a high probability for the candidate origin was assigned. Glowbug has an all-sky field-of-view limited only by earth occultation and large-scale structures on the International Space Station (ISS). At T0, the Glowbug boresight was pointed towards R.A., Dec. = 158, 59 deg. The probability peak for the candidate origin (R.A., Dec. = 96, -11 deg.) was thus 78 deg. below the Glowbug boresight and more than 30 deg. above the earth limb. In total, 81% of the 90% confidence counterpart region was unocculted by the earth.\n\nUsing 50-2000 keV data and representative three representative (soft, medium, and hard spectrum) GRB templates from [3], we searched for transient gamma-ray signals using maximum likelihood methods and found no plausible counterpart up to 30s before or after T0. We determined 3-sigma upper limits on the flux for a GRB originating at the probability peak (R.A., Dec. = 96, -11 deg.) by selecting data centered on T0 and integrating the posterior probability to determine the flux beyond which the tail probability is 0.27%. For various timescales and the three GRB spectral templates, these limits in units of 1e-7 erg/cm2/s are:\nTimescale Soft Normal Hard\n------------------------------------\n0.128 s: 0.9 1.8 9.1\n1.024 s: 0.2 0.5 2.5\n8.192 s: 0.2 0.3 1.2\n\nThese results do not account for scattering or occultation by structures on the ISS.\n\nGlowbug is a NASA-funded technology demonstrator for sensitive, low-cost gamma-ray transient telescopes developed, built, and operated by the U.S. Naval Research Laboratory (NRL) with support from the University of Alabama in Huntsville, USRA, and NASA MSFC. It was launched on 2023 March 15 aboard the Department of Defense Space Test Programâs STP-H9 to the ISS. The detector comprises 12 large-area (15 cm x 15 cm) CsI:Tl panels covering the surface of a half cube, and two hexagonal (5-cm diameter, 10-cm length) CLLB scintillators, giving it a large field of view (instantaneous FoV ~2/3 sky) over a wide energy band of 50 keV to >2 MeV.\n\n[1] Grove, J.E. et al. 2020, Proc. Yamada Conf. LXXI, arXiv:2009.11959\n[2] Woolf, R.S. et al. 2022, Proc. SPIE, 12181, id. 121811O\n[3] Goldstein, A. et al. 2020, ApJ 895, 40, arXiv :1909.03006\n\nDistribution Statement A: Approved for public release. Distribution is unlimited.\n\n",
"published": "2023-05-26T17:28:44.792015Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-05-26T17:28:44.792053Z",
"modified": "2023-05-26T17:28:44.803505Z",
"targets": []
},
{
"id": 80,
"topic": "gcn.circular",
"uuid": "baa8ab09-021b-46a3-a638-6bf4d86a0de4",
"title": "LIGO/Virgo/KAGRA S230518h: TESS observations of the localization region",
"submitter": "Hop gcn.circular",
"authors": "Rahul Jayaraman at MIT <rjayaram@mit.edu>",
"data": {
"date": "23/05/25 16:37:21 GMT",
"from": "Rahul Jayaraman at MIT <rjayaram@mit.edu>",
"title": "GCN CIRCULAR",
"number": "33878",
"subject": "LIGO/Virgo/KAGRA S230518h: TESS observations of the localization region"
},
"message_text": "R. Jayaraman, M.M. Fausnaugh, G. Mo, E. Katsavounidis, R. Vanderspek, G.R. Ricker (MIT) report:\n\nWe report observations by the Transiting Exoplanet Survey Satellite (TESS) of the Bilby sky localization region from the LVK NSBH merger event S230518h (GCN 33813, 33816; LVK collaboration), the Swope candidates presented in GCN 33829 (Coulter et al.), and the MeerLICHT candidates presented in Astronote 2023-121 (Johnston et al.). TESS has a field-of-view of 2304 deg^2, a plate scale of 21 arcseconds per pixel, and a passband between 600 and 1000 nm. TESS images its entire field of view every 200 seconds.\n\nWe used the techniques described in Mo et al. (ApJL 948 L3, 2023) to calculate an overlap between the TESS field of view and the gravitational-wave (GW) localization sky map. 15.3% of the Bilby sky localization probability fell within TESS cameras 3 and 4. TESS was observing its pre-determined fields of view for Sector 65 (https://tess.mit.edu/tess-year-5-observations/) beginning ~6.8 days prior to the LVK trigger. Observations continued until 11 hours after the time of the trigger, at which time a scheduled TESS data downlink via the Deep Space Network commenced. TESS full frame images (FFIs) were then calibrated using the TICA software package (Fausnaugh et al. RNAAS 4 251, 2020) and subsequently became public on MAST ~36 hours after downlink. Shortly after the TICA data became public at MAST, we commenced analysis of the TESS FFIs. \n\nThe Earth rose above TESSâs sun shade limits at 2023-05-10 04:23 UTC, and set below the sun shade limits at 2023-05-18 13:30 UTC, which was 32 minutes after the GW trigger. Earthshine during these times introduces strong scattered light signals in the TESS images, which manifests as a time-variable background that complicates our analysis.\n\nUsing reference images from before the GW trigger, we performed difference imaging on the TESS images. We extracted differential light curves for 10,343 galaxies at distances between 200 and 400 Mpc from the GLADE+ catalog (Dálya et al. MNRAS 514 1 1403â1411, 2022) that lie within the GW sky localization. Comparing the flux in each light curve during the 4 days prior to the GW trigger with the flux during the 11 hours after the trigger, we find 40 light curves with a nominal 7-sigma difference. Visual inspection shows that these deviations are mainly caused by crowding of bright stars in the TESS photometric apertures, implying that these deviations are related to residual systematic errors in the photometry. Smaller deviations might still be candidates, but interpretation of these light curves is difficult due to the variable backgrounds from earthshine.\n\nThe three Swope candidates (GCN 33829, Coulter et al.) and two MeerLICHT candidates (Astronote 2023-121, Johnston et al.) lie within the TESS field of view. We extracted differential light curves for these candidates as well. The TESS light curves on 4-hour timescales are consistent with zero flux, implying the following 5-sigma upper limits on any transients from 6.8 days prior to 11 hours after the GW trigger:\n\nSwope Candidate | TESS magnitude limits\nSSS23a | >18.98\nSSS23b | >18.51\nSSS23c | >18.03\n\nMeerLICHT Candidate | TESS magnitude limits\nAT 2023iyb | >18.93\nAT 2023ixg | >17.38\n\nFor AT2023iyb, the TESS limit is consistent with the MeerLICHT measurement if the transient is relatively blue.\n\n",
"published": "2023-05-25T16:37:30.677330Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-05-25T16:37:30.677352Z",
"modified": "2023-05-25T16:37:30.683662Z",
"targets": []
},
{
"id": 74,
"topic": "gcn.circular",
"uuid": "74651575-411e-411c-935b-1e2d2f6f99dd",
"title": "LIGO/Virgo/KAGRA S230518h: No transient candidates in CALET observations",
"submitter": "Hop gcn.circular",
"authors": "Yuta Kawakubo at Louisiana State University <kawakubo1@lsu.edu>",
"data": {
"date": "23/05/25 06:39:10 GMT",
"from": "Yuta Kawakubo at Louisiana State University <kawakubo1@lsu.edu>",
"title": "GCN CIRCULAR",
"number": "33872",
"subject": "LIGO/Virgo/KAGRA S230518h: No transient candidates in CALET observations"
},
"message_text": "A. Yoshida, T. Sakamoto, S. Sugita (AGU), Y. Kawakubo (LSU),\nK. Yamaoka (Nagoya U), S. Nakahira (JAXA), Y. Asaoka (ICRR),\nS. Torii, Y. Akaike, K. Kobayashi (Waseda U), Y. Shimizu,\nT. Tamura (Kanagawa U), N. Cannady (GSFC/UMBC),\nM. L. Cherry (LSU), S. Ricciarini (U of Florence),\nP. S. Marrocchesi (U of Siena),\nand the CALET collaboration:\n\nThe CALET Gamma-ray Burst Monitor (CGBM) was operating at the trigger\ntime of S230518h T0 = 2023-05-18T12:59:08 UT (GCN33813,33816).\n\nNo CGBM onboard trigger occurred around the event time. Based on the\nupdate sky map, the summed probabilities inside the CGBM HXM (7 - 3000 keV)\nand SGM (40 keV - 28 MeV) fields of view\nare 0 % and 65 %, respectively (and 76 % credible regions of the\nupdate sky map was above the horizon). The HXM and SGM fields of\nview were centered at RA = 152 deg, Dec = +50 deg and RA = 161\ndeg, Dec = +42 deg at T0, respectively.\n\nBased on the analysis of the light curve data with 0.125 sec time\nresolution from T0-60 sec to T0+60 sec, we found no significant\nexcess (> 7 sigmas) around the trigger time in either the HXM or the SGM data.\n\nThe preliminary CGBM analysis is available at\n\nhttp://cgbm.calet.jp/cgbm_trigger/O4/S230518h\n\nThe CALET Calorimeter (CAL) was operating in the high energy trigger\nmode at the trigger time of S230518h. Using the CAL data, we searched\nfor gamma-ray events in the 10-100 GeV band from -60 sec\nto +60 sec from the GW trigger time and found no candidates. There\nwas no significant overlap with the LVK high probability localization\nregion at T0+-60 sec. The CAL FOV was centered at RA = 161 deg,\nDec= +42 deg at T0.\n\nThe preliminary CGBM analysis for O4 events can be found here:\nhttp://cgbm.calet.jp/cgbm_trigger/O4\n\n",
"published": "2023-05-25T06:39:19.783206Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-05-25T06:39:19.783226Z",
"modified": "2023-05-25T06:39:19.791474Z",
"targets": []
},
{
"id": 45,
"topic": "gcn.circular",
"uuid": "40e0fe66-740f-4de1-b1c7-944d9285a0e7",
"title": "LIGO/Virgo/KAGRA S230518h: Swift/UVOT Upper Limits for MeerLICHT candidates: AT2023ixg and AT2023iyb",
"submitter": "Hop gcn.circular",
"authors": "Alice Breeveld at MSSL-UCL <a.breeveld@ucl.ac.uk>",
"data": {
"date": "23/05/22 15:52:54 GMT",
"from": "Alice Breeveld at MSSL-UCL <a.breeveld@ucl.ac.uk>",
"title": "GCN CIRCULAR",
"number": "33851",
"subject": "LIGO/Virgo/KAGRA S230518h: Swift/UVOT Upper Limits for MeerLICHT candidates: AT2023ixg and AT2023iyb"
},
"message_text": "A. A. Breeveld (UCL-MSSL), N. P. M. Kuin (UCL-MSSL), S. R. Oates (U. of Birmingham), P. Brown (TAMU), M. De Pasquale (U. Messina), C. Gronwall (PSU), N. Klingler (NASA-GSFC/UMBC/CRESST II), F. E. Marshall (NASA/GSFC), M. J. Page (UCL-MSSL), M. H. Siegel (PSU), A.P. Beardmore (U. Leicester), M.G. Bernardini (INAF-OAB), S. Campana (INAF-OAB), S.B. Cenko (NASA/GSFC), A. DâAì (INAF-IASFPA), P. DâAvanzo (INAF-OAB), V. DâElia (ASI-SSDC & INAF-OAR), S. Dichiara (PSU), P.A. Evans (U. Leicester), R.A.J. Eyles-Ferris (U. Leicester), D. Hartmann (Clemson University), J.A. Kennea (PSU), S. Laha (NASA/GSFC), A.Y. Lien (GSFC/UMBC), A. Melandri (INAF-OAB), J.A. Nousek (PSU), P. OâBrien (U. Leicester), J.P. Osborne (U. Leicester), K.L. Page (U. Leicester), D. M. Palmer (LANL), S. Ronchini (PSU), T. Sbarrato (INAF-OAB), B. Sbarufatti (INAF-OAB), G. Tagliaferri (INAF-OAB), A. Tohuvavohu (U. Toronto) and E. Troja (U Tor Vergata, INAF) report on behalf of the Swift team:\n\nWe report Swift/UVOT observations of the candidates AT2023ixg and AT2023iyb (Johnston et al., Astronote 2023-121) found by the the MeerLICHT 0.65m wide-field telescope during the search for the EM counterpart of the LVC event S230518h (LIGO/VIRGO/KAGRA Collaboration GCN Circ. 33813).\n\nSwift/UVOT observations of these MeerLICHT candidates began 73 hours after the LVK trigger (LIGO/VIRGO/KAGRA Collaboration, GCN Circ. 33813) in the UV filters. We do not detect either of the candidates in the UVOT exposures. Preliminary 3-sigma upper limits using the UVOT photometric system (Breeveld et al. 2011, AIP Conf. Proc. 1358, 373) for the exposures are:\n\nTarget Filter T_start(s) T_stop(s) Exp(s) 3sigUL\n\nAT2023ixg w1 267962 273767 164 18.4\n m2 267775 278324 1067 19.6\n w2 267587 278065 570 20.4\n\nAT2023iyb m2 265880 272062 507 19.9\n w2 265181 271869 1214 20.7\n\nThis circular is an official product of the Swift team.\n\n",
"published": "2023-05-22T15:53:06.275615Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-05-22T15:53:06.275638Z",
"modified": "2023-05-22T15:53:06.280512Z",
"targets": []
},
{
"id": 19,
"topic": "gcn.circular",
"uuid": "dfb5c41d-d2de-4545-b7d8-b751800928c8",
"title": "LIGO/Virgo/KAGRA S230518h: ATCA follow-up of candidate counterparts",
"submitter": "Hop gcn.circular",
"authors": "Dougal Dobie at VAST <ddobie94@gmail.com>",
"data": {
"date": "23/05/20 14:56:35 GMT",
"from": "Dougal Dobie at VAST <ddobie94@gmail.com>",
"title": "GCN CIRCULAR",
"number": "33834",
"subject": "LIGO/Virgo/KAGRA S230518h: ATCA follow-up of candidate counterparts"
},
"message_text": "D. Dobie (Swinburne/OzGrav), A. Gulati (USyd/OzGrav), T. Murphy\n(USyd/OzGrav)\nand the JAGWAR collaboration.\n\nWe have conducted observations of the three candidate optical counterparts\nto\nS230518h (GCN 33829) and the X-ray source S230518h_X8 (GCN 33824) with the\nAustralia Telescope Compact Array.\n\nObservations were carried out on 2023-05-20 between 02:40 and 13:30 UTC\nwith 2x2048 MHz bands centered on 5.5 and 9 GHz. The array is currently in\nthe compact EW352 configuration and hence we discarded all data from CA06,\nresulting in a FWHM angular resolution of approximately 30\" and 20\" at\n5.5 GHz and 9 GHz respectively.\n\nWe detect no radio emission at the location of the optical candidates\nwith the following preliminary 3-sigma upper limits:\n\n| Source | 5.5 GHz (uJy) | 9 GHz (uJy) |\n| SSS23a | <90 | <50 |\n| SSS23b | <120 | <90 |\n| SSS23c | <120 | <60 |\n\nWe detect a radio source consistent with the position of S230518h_X8 with\npreliminary flux densities of ~350 uJy and ~500 uJy at 5.5 GHz and 9 GHz.\nThis source was also detected by the Rapid ASKAP Continuum Survey in\nobservations on 2019-08-03, suggesting it is unrelated to S230518h.\n\nThank you to CSIRO staff for supporting these observations.\n\n",
"published": "2023-05-20T14:56:46.569485Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-05-20T14:56:46.569506Z",
"modified": "2023-05-20T14:56:46.574848Z",
"targets": []
},
{
"id": 18,
"topic": "gcn.circular",
"uuid": "8411b944-d26f-4cf8-92e1-6d2332d5da18",
"title": "LIGO/Virgo/KAGRA S230518h: GECKO tiling observations with KMTNet",
"submitter": "Hop gcn.circular",
"authors": "Gregory Paek at Seoul National University <gregorypaek94@gmail.com>",
"data": {
"date": "23/05/20 13:40:33 GMT",
"from": "Gregory Paek at Seoul National University <gregorypaek94@gmail.com>",
"title": "GCN CIRCULAR",
"number": "33833",
"subject": "LIGO/Virgo/KAGRA S230518h: GECKO tiling observations with KMTNet"
},
"message_text": "Gregory S.-H. Paek, Myungshin Im, Mankeun Jeong, Seo-Won Chang, Hyeonho\nChoi, Sophia Kim, Elahe Khalouei (SNU/SNU ARC), and Chung-Uk Lee (KASI), on behalf of the GECKO Team\n\nWe report the optical observations conducted with the KMTNet telescopes of the 90 % localization area of of the LIGO/Virgo/KAGRA gravitational-wave event, S230518h (The LVK Collaboration, GCN 33816). The KMTNet is a system made of three 1.6-meter class telescopes each at SAAO in South Africa, CTIO in Chile, and SSO in Australia. The KMTNet field of view of a single pointing covers a ~2 deg by 2 deg area.\n\nThe KMTNet observation started at 2023-05-18 17:31 (UT) or about 4.53 hrs\nafter the GW alert, and we took a series of R-band images for 2*120sec per field. As a result, we covered 59 tiles (~230 deg^2) within the localization area. The preliminary depths of these images are 22 magnitudes for a 5-sigma detection of point sources.\n\n------------------------------------------------------------------------\nt-t0[day] DATE-OBS[UTC] OBSERVAT RA DEC FILTER\n------------------------------------------------------------------------\n0.189 2023-05-18T17:31:36 SAAO 07:07:21.280 -31:59:59.00 R\n0.194 2023-05-18T17:37:50 SAAO 07:10:00.030 -37:59:59.90 R\n0.198 2023-05-18T17:44:29 SAAO 07:08:06.490 -35:59:59.80 R\n0.203 2023-05-18T17:51:32 SAAO 08:11:42.420 -77:59:59.90 R\n0.207 2023-05-18T17:57:52 SAAO 08:13:42.860 -79:59:59.80 R\n0.212 2023-05-18T18:03:48 SAAO 07:43:43.690 -71:59:59.80 R\n0.216 2023-05-18T18:09:58 SAAO 07:38:10.850 -83:59:59.80 R\n0.220 2023-05-18T18:16:06 SAAO 07:45:13.770 -69:59:59.80 R\n0.225 2023-05-18T18:22:25 SAAO 08:16:33.060 -81:59:59.70 R\n0.229 2023-05-18T18:28:44 SAAO 08:10:12.780 -75:59:59.80 R\n0.233 2023-05-18T18:35:04 SAAO 08:06:45.600 -67:59:59.90 R\n0.238 2023-05-18T18:41:23 SAAO 07:39:34.490 -75:59:59.90 R\n0.242 2023-05-18T18:47:36 SAAO 08:43:38.220 -83:59:59.90 R\n0.428 2023-05-18T23:15:22 CTIO 07:09:08.320 -33:59:59.90 R\n0.449 2023-05-18T23:46:11 CTIO 07:34:44.200 -52:00:00.00 R\n0.454 2023-05-18T23:52:30 CTIO 07:42:23.090 -53:59:59.90 R\n0.459 2023-05-18T23:59:28 CTIO 07:45:27.280 -58:00:00.00 R\n0.463 2023-05-19T00:05:48 CTIO 07:36:34.750 -78:00:00.40 R\n0.467 2023-05-19T00:12:00 CTIO 07:36:55.300 -56:00:00.00 R\n0.476 2023-05-19T00:24:14 CTIO 08:08:07.970 -72:00:00.20 R\n0.482 2023-05-19T00:33:33 CTIO 07:44:30.960 -60:00:00.00 R\n0.487 2023-05-19T00:40:41 CTIO 07:24:42.400 -41:59:59.90 R\n0.496 2023-05-19T00:53:27 CTIO 08:09:03.220 -74:00:00.20 R\n0.498 2023-05-19T00:56:48 CTIO 07:36:35.100 -47:59:59.90 R\n0.503 2023-05-19T01:03:04 CTIO 08:07:23.000 -70:00:00.10 R\n0.508 2023-05-19T01:10:00 CTIO 07:47:31.840 -66:00:00.00 R\n0.512 2023-05-19T01:16:57 CTIO 08:46:49.440 -78:00:00.40 R\n0.517 2023-05-19T01:23:20 CTIO 08:40:50.860 -76:00:00.30 R\n0.521 2023-05-19T01:29:31 CTIO 08:36:13.420 -74:00:00.20 R\n0.525 2023-05-19T01:35:43 CTIO 08:32:32.370 -72:00:00.10 R\n0.793 2023-05-19T08:01:18 SSO 07:46:28.480 -67:59:59.80 R\n0.837 2023-05-19T09:04:10 SSO 07:17:50.270 -35:59:59.60 R\n0.841 2023-05-19T09:10:46 SSO 07:29:01.780 -59:59:59.60 R\n0.846 2023-05-19T09:17:26 SSO 07:41:52.780 -73:59:59.70 R\n0.853 2023-05-19T09:26:53 SSO 07:55:06.650 -61:52:59.60 R\n0.855 2023-05-19T09:29:57 SSO 08:06:13.800 -65:59:59.60 R\n0.859 2023-05-19T09:36:25 SSO 08:29:32.030 -69:59:59.70 R\n1.174 2023-05-19T17:09:20 SAAO 06:44:29.820 -19:08:55.90 R\n1.178 2023-05-19T17:15:29 SAAO 06:21:24.190 -11:29:19.70 R\n1.185 2023-05-19T17:25:58 SAAO 06:50:13.920 -24:53:37.90 R\n1.188 2023-05-19T17:29:38 SAAO 06:45:31.020 -22:58:43.90 R\n1.192 2023-05-19T17:35:49 SAAO 06:48:59.840 -26:48:31.90 R\n1.197 2023-05-19T17:42:12 SAAO 06:57:31.010 -26:48:32.00 R\n1.201 2023-05-19T17:48:32 SAAO 06:40:54.490 -21:03:49.90 R\n1.206 2023-05-19T17:55:17 SAAO 06:56:23.010 -28:43:22.90 R\n1.210 2023-05-19T18:01:27 SAAO 06:53:47.500 -22:58:43.80 R\n1.220 2023-05-19T18:15:24 SAAO 06:59:32.900 -29:52:59.80 R\n1.222 2023-05-19T18:19:12 SAAO 06:58:36.200 -24:53:37.80 R\n1.226 2023-05-19T18:24:25 SAAO 07:05:03.610 -28:43:23.10 R\n1.230 2023-05-19T18:29:49 SAAO 07:26:53.800 -81:59:59.90 R\n1.234 2023-05-19T18:36:37 SAAO 07:27:16.320 -43:59:59.70 R\n1.238 2023-05-19T18:42:34 SAAO 07:27:43.890 -49:59:59.90 R\n1.245 2023-05-19T18:51:37 SAAO 07:39:49.890 -49:59:59.90 R\n1.249 2023-05-19T18:57:44 SAAO 07:38:10.800 -61:59:59.80 R\n1.252 2023-05-19T19:02:27 SAAO 07:50:46.190 -55:59:59.90 R\n1.263 2023-05-19T19:17:49 SAAO 08:00:00.020 -59:59:59.90 R\n1.270 2023-05-19T19:28:05 SAAO 08:56:23.500 -79:52:59.80 R\n1.272 2023-05-19T19:31:16 SAAO 09:06:12.490 -81:59:59.90 R\n1.277 2023-05-19T19:37:38 SAAO 09:49:05.440 -83:59:59.80 R\n\nWe have reference images for most of the observed fields from the KMTNet Synoptic Survey of Southern SKy (KS4) project. Detailed photometry and transient search analyses are underway.\n\nGravitational-wave EM Counterpart Korean Observatory (GECKO) is a network of 10+ 0.5m to 1m class telescopes worldwide. KMTNet is operated by the Korea Astronomy and Space Science Institute. We thank the KMTNet operators for their support for the KMTNet observations.\n\n",
"published": "2023-05-20T13:40:42.107461Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-05-20T13:40:42.107483Z",
"modified": "2023-05-20T13:40:42.115007Z",
"targets": []
},
{
"id": 17,
"topic": "gcn.circular",
"uuid": "cd1bf38e-b8b7-4cd3-8258-cd5a9e916c88",
"title": "LIGO/Virgo/KAGRA S230518h: Swift/UVOT Upper Limits for Swope candidates: SSS23a, SSS23b and SSS23c",
"submitter": "Hop gcn.circular",
"authors": "Samantha Oates at University of Birmingham <samantha.oates@alumni.ucl.ac.uk>",
"data": {
"date": "23/05/20 12:10:28 GMT",
"from": "Samantha Oates at University of Birmingham <samantha.oates@alumni.ucl.ac.uk>",
"title": "GCN CIRCULAR",
"number": "33832",
"subject": "LIGO/Virgo/KAGRA S230518h: Swift/UVOT Upper Limits for Swope candidates: SSS23a, SSS23b and SSS23c"
},
"message_text": "LIGO/Virgo/KAGRA S230518h: Swift/UVOT Upper Limits for Swope candidates: SSS23a, SSS23b and SSS23c \n\nS. R. Oates (U. of Birmingham), A. A. Breeveld (MSSL-UCL), P. Brown (TAMU),\nM. De Pasquale (U. Messina), C. Gronwall (PSU), N. Klingler (NASA-GSFC/UMBC/CRESST II),\nN. P. M. Kuin (UCL-MSSL), F. E. Marshall (NASA/GSFC), M. J. Page (UCL-MSSL),\nM. H. Siegel (PSU), A.P. Beardmore (U. Leicester), M.G. Bernardini (INAF-OAB),\nS. Campana (INAF-OAB), S.B. Cenko (NASA/GSFC), A. DâAì (INAF-IASFPA), P. DâAvanzo (INAF-OAB),\nV. DâElia (ASI-SSDC & INAF-OAR), S. Dichiara (PSU), P.A. Evans (U. Leicester),\nR.A.J. Eyles-Ferris (U. Leicester), D. Hartmann (Clemson University),\nJ.A. Kennea (PSU), S. Laha (NASA/GSFC), A.Y. Lien (GSFC/UMBC), A. Melandri (INAF-OAB),\nJ.A. Nousek (PSU), P. OâBrien (U. Leicester), J.P. Osborne (U. Leicester),\nK.L. Page (U. Leicester), D. M. Palmer (LANL), S. Ronchini (PSU), T. Sbarrato (INAF-OAB),\nB. Sbarufatti (INAF-OAB), G. Tagliaferri (INAF-OAB), A. Tohuvavohu (U. Toronto),\nE. Troja (U Tor Vergata, INAF) report on behalf of the Swift team:\n\nWe report Swift/UVOT observations of the candidates SSS23a, SSS23b and SSS23c (Coulter et al.,\nGCN Circ. 33829) found by the Swope 1-m telescope during the search for the EM counterpart\nof the LVC event S230518h (LIGO/VIRGO/KAGRA Collaboration GCN Circ. 33813). \n\nSwift/UVOT observations of the Swope candidates began 1.5 days after the LVK trigger\n(LIGO/VIRGO/KAGRA Collaboration GCN Circ. 33813). We do not detect any of the 3 Swope candidates\nin the UVOT exposures. Preliminary 3-sigma upper limits using the UVOT photometric system\n(Breeveld et al. 2011, AIP Conf. Proc. 1358, 373) for the exposures are:\n\nTarget Filter T_start(s) T_stop(s) Exp(s) 3sigUL\n\nSSS23a u 129503 135881 288 >19.2\nSSS23a w1 129079 135788 585 >19.9\nSSS23a m2 128445 135607 879 >20.2\nSSS23a w2 129713 136188 753 >20.1\n \t \t \nSSS23b u 140770 140997 223 >19.1\nSSS23b w1 140310 140765 448 >19.8\nSSS23b m2 139622 140304 671 >20.1\nSSS23b w2 141004 141319 309 >19.6\n \t \t \nSSS23c u 130526 141885 131 >18.7\nSSS23c w1 130415 141799 264 >19.3\nSSS23c m2 130250 141633 395 >19.6\nSSS23c w2 130586 142008 133 >19.0\n\nThis circular is an official product of the Swift team.\n\n",
"published": "2023-05-20T12:10:37.046986Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-05-20T12:10:37.047005Z",
"modified": "2023-05-20T12:10:37.052619Z",
"targets": []
},
{
"id": 15,
"topic": "gcn.circular",
"uuid": "22a96167-13b6-4eb5-9815-b208956f074b",
"title": "LIGO/Virgo/KAGRA S230518h: ATLAS observations of the skymap",
"submitter": "Hop gcn.circular",
"authors": "Michael Fulton at Queen's U, Belfast <mfulton07@qub.ac.uk>",
"data": {
"date": "23/05/19 18:09:18 GMT",
"from": "Michael Fulton at Queen's U, Belfast <mfulton07@qub.ac.uk>",
"title": "GCN CIRCULAR",
"number": "33830",
"subject": "LIGO/Virgo/KAGRA S230518h: ATLAS observations of the skymap"
},
"message_text": "M. D. Fulton, M. Nicholl, K. W. Smith, S. Srivastav, D. R. Young, M. McCollum, T. Moore, S. Sim, J. Weston, X. Sheng (QUB), L. Shingles (GSI/QUB), J. Sommer (LMU/QUB), A. Aamer (UoB/QUB), S. J. Smartt, H. Stevance, L. Rhodes, A. Andersson (Oxford), L. Denneau, J. Tonry, H. Weiland, A. Lawrence, R. Siverd (IfA, University of Hawaii), N. Erasmus, W. Koorts (South African Astronomical Observatory), J. Anderson (ESO), A. Jordan, V. Suc (UAI, Obstech) A. Rest (STScI), T.-W. Chen (TUM), C. Stubbs (Harvard):\n\nWe report observations of the bilby.multiorder.fits updated skymap of the NSBH event S230518h (The LIGO-Virgo-Kagra Collaboration, GCN 33816) with the ATLAS telescope system (Tonry et al., 2018, PASP, 13, 164505). ATLAS is a quadruple 0.5m optical telescope survey system (Hawaii, South Africa, Chile) employing two filters, cyan and orange. In our primary NASA mission for Near-Earth Object discovery, we cover the entire visible night sky every 24hrs to mag~19.5, weather permitting.\n\nDuring normal science operations, we covered part of the accessible skymap of S230518h. A sequence of quads (4 x 30-sec images) was taken at each pointing position. The images were processed with the ATLAS pipeline, and reference images were subtracted from each one. Transient candidates were identified and run through our standard filtering procedures (Smith et al., 2020, PASP, 132, 1). We covered 175 square degrees of the bilby.fits skymap 90% area, and covered a sky region totalling 30% of the event's full localisation likelihood South of declination =-42 degrees. Data acquisition began at MJD 60082.95977 or 2023-05-18 23:02:04 (UTC), 9.4hrs after the LVC Preliminary notice and 10.1hrs after the GW merger event at 2023-05-18 12:59:08 (UTC).\n\nObservations lasted between ~10hrs to 18hrs after the NSBH merger. We found no new transient sources that had not been previously detected by ATLAS before the GW event or reported to the IAU Transient name server. The depths of our images were shallower than normal due to weather conditions, ranging between m_o < 17.5 to m_o < 18.5.\n\nThe Asteroid Terrestrial-impact Last Alert System (ATLAS) project is primarily funded to search for Near-Earth asteroids through NASA grants NN12AR55G, 80NSSC18K0284, and 80NSSC18K1575; byproducts of the NEO search include images and catalogs from the survey area. This work was partially funded by Kepler/K2 grant J1944/80NSSC19K0112 and HST GO-15889, and STFC grants ST/T000198/1 and ST/S006109/1. The ATLAS science products have been made possible through the contributions of the University of Hawaii Institute for Astronomy, the Queen's University Belfast, the Space Telescope Science Institute, the South African Astronomical Observatory, and The Millennium Institute of Astrophysics (MAS), Chile.\n\n",
"published": "2023-05-19T18:09:27.982041Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-05-19T18:09:27.982061Z",
"modified": "2023-05-19T18:09:27.989986Z",
"targets": []
},
{
"id": 14,
"topic": "gcn.circular",
"uuid": "51b77280-a324-4382-9b2c-239fe16ddce3",
"title": "LIGO/Virgo/KAGRA S230518h: Swope Search and Candidate Counterpart Identification",
"submitter": "Hop gcn.circular",
"authors": "David Coulter at UCSC <dcoulter@ucsc.edu>",
"data": {
"date": "23/05/19 17:08:20 GMT",
"from": "David Coulter at UCSC <dcoulter@ucsc.edu>",
"title": "GCN CIRCULAR",
"number": "33829",
"subject": "LIGO/Virgo/KAGRA S230518h: Swope Search and Candidate Counterpart Identification"
},
"message_text": "D. A. Coulter (UCSC), C. D. Kilpatrick (Northwestern), C. Rojas-Bravo (UCSC), R. J. Foley (UCSC), Y. Kong (LCO), B. OâConnor (GWU), A. L. Piro (Carnegie), and A. Rest (STScI), report on behalf of the 1M2H collaboration:\n\nWe conducted an optical search for candidate counterparts in the localization region of LVK gravitational wave event S230518h (GCN 33813) with the Swope 1-m telescope using the 29.8â x 29.7â field-of-view Direct camera. The tiling was optimally determined using the latest localization map from the LVK and galaxy catalogs in Teglon (Coulter et al., in prep). In total, Swope observed 9 fields within the 90th percentile localization region of S230518h at:\n\nMJD RA Dec Band Exptime Maglim(AB)\n60082.97419 07:22:15.898 -49:05:26.261 i 300.000 21.7621\n60082.98236 07:20:39.617 -84:47:34.465 i 285.000 21.3325\n60082.98727 07:20:03.166 -85:47:04.692 i 300.000 21.3605\n60082.99201 07:23:52.430 -84:17:49.351 i 285.000 21.5397\n60082.99720 07:42:22.186 -54:32:42.515 i 300.000 21.8507\n60083.00245 07:43:16.761 -70:24:46.161 i 300.000 21.1865\n60083.00728 07:50:34.461 -67:26:15.477 i 285.000 21.3315\n60083.01301 07:53:15.693 -75:52:02.414 i 315.000 21.1845\n60083.01791 07:54:53.802 -78:50:33.098 i 330.000 20.4372\n\nThese observations have been reported to the TreasureMap (Wyatt et al., 2020).\n\nSubtracting DECam and SkyMapper template images from the Swope images using photpipe (Rest et al., 2005), we identified the following candidate counterparts in our imaging:\n\nName MJD RA(deg) Dec(deg) Filter Mag Magerr 2D_Percentile\nSSS23a 60082.98236 108.74882083333331 -84.62690277777777 i 20.9 0.2 0.2479\nSSS23b 60082.98727 112.276725 -85.9142638888889 i 21.1 0.2 0.2435\nSSS23c 60083.01791 117.93889999999998 -78.77603055555555 i 20.1 0.2 0.1924\n\nWe have checked the Minor Planet Center and Transient Name Server, finding no previously reported solar system object or transient. We encourage follow-up observations of these sources.\n\n",
"published": "2023-05-19T17:08:24.025147Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-05-19T17:08:24.025164Z",
"modified": "2023-05-19T17:08:24.030858Z",
"targets": []
},
{
"id": 12,
"topic": "gcn.circular",
"uuid": "e28b6057-e949-4947-8fd0-f8932a70b921",
"title": "LIGO/Virgo/KAGRA S230518h: Upper limits from Konus-Wind observations",
"submitter": "Hop gcn.circular",
"authors": "Anna Ridnaia at Ioffe Institute <ridnaia@mail.ioffe.ru>",
"data": {
"date": "23/05/19 16:11:50 GMT",
"from": "Anna Ridnaia at Ioffe Institute <ridnaia@mail.ioffe.ru>",
"title": "GCN CIRCULAR",
"number": "33827",
"subject": "LIGO/Virgo/KAGRA S230518h: Upper limits from Konus-Wind observations"
},
"message_text": "A.Ridnaia, D. Frederiks, A.Lysenko, D. Svinkin,\nA. Tsvetkova, M. Ulanov, and T. Cline,\non behalf of the Konus-Wind team, report:\n\nKonus-Wind (KW) was observing the whole sky at the time of the\nLIGO/Virgo/KAGRA event S230518h (2023-05-18 12:59:08.167 UTC, hereafter T0;\nLIGO/Virgo/KAGRA Collaboration GCN Circ. 33813, 33816).\n\nNo triggered or waiting-mode KW GRBs happened between ~10 hours\nbefore and ~2 hours after T0 (the current available data).\nUsing waiting-mode data within the interval T0 +/- 100 s,\nwe found no significant (> 5 sigma) excess over the background\nin both KW detectors on temporal scales from 2.944 s to 100 s.\n\nWe estimate an upper limit (90% conf.) on the 20 - 1500 keV fluence\nto 7.6x10^-7 erg/cm^2 for a burst lasting less than 2.944 s and having a\ntypical KW short GRB spectrum (an exponentially cut off power law (CPL)\nwith alpha =-0.5 and EpP0 keV) and to 4.0x10^-7 erg/cm^2 for a burst\nhaving spectrum similar to that of GRB 170817A (a CPL with alpha =-0.62\nand Ep\u00185 keV). For a typical long GRB spectrum (the Band function with\nalpha=-1, beta=-2.5, and Ep00 keV), the corresponding limiting peak flux\nis 2.3x10^-7 erg/cm^2/s (20 - 1500 keV, 2.944 s scale).\n\nAll the quoted values are preliminary.\n\n",
"published": "2023-05-19T16:12:02.709167Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-05-19T16:12:02.709187Z",
"modified": "2023-05-19T16:12:02.715703Z",
"targets": []
},
{
"id": 11,
"topic": "gcn.circular",
"uuid": "132bb2d6-4429-4086-b596-9f1b3685ab26",
"title": "LIGO/Virgo S230518h: AGILE/MCAL observations",
"submitter": "Hop gcn.circular",
"authors": "Francesco Verrecchia at SSDC,INAF-OAR <francesco.verrecchia@ssdc.asi.it>",
"data": {
"date": "23/05/19 11:54:04 GMT",
"from": "Francesco Verrecchia at SSDC,INAF-OAR <francesco.verrecchia@ssdc.asi.it>",
"title": "GCN CIRCULAR",
"number": "33826",
"subject": "LIGO/Virgo S230518h: AGILE/MCAL observations"
},
"message_text": "F. Verrecchia (SSDC, and INAF/OAR), M. Tavani (INAF/IAPS, and Univ.\nRoma Tor Vergata), A. Ursi (ASI), C. Pittori (SSDC, and INAF/OAR),\nM. Cardillo, C. Casentini, L. Foffano, G. Piano (INAF/IAPS), F.\nLucarelli (SSDC, and INAF/OAR), L. Baroncelli, A. Bulgarelli, A.\nCiabattoni, A. Di Piano, V. Fioretti, G. Panebianco, N. Parmiggiani\n(INAF/OAS-Bologna), M. Pilia (INAF/OA-Cagliari), F. Longo (Univ.\nTrieste, and INFN Trieste), report on behalf of the AGILE Team:\n\nIn response to the LIGO/Virgo GW event S230518h at T0 = 2023-05-18\n12:59:08.167 (UT), a preliminary analysis of the AGILE minicalorimeter\n(MCAL) triggered data found no significant event candidates within\na time interval covering -/+ 2 sec from the LIGO/Virgo T0.\n\nAt the T0, about 25% of the S230518h 90% c.l. localization region\n(LR) was accessible to the AGILE/MCAL.\n\nThree-sigma upper limits (ULs) are obtained in the 0.4-1 MeV energy\nrange, for a 1 s integration time at different celestial positions\nwithin the accessible S230518h LR, from a minimum of 1.4E-06 erg\ncm^-2 to a maximum of 6.6E-06 erg cm^-2 (assuming as spectral model\na single power-law with photon index 1.5).\n\nAn independent procedure based on photon counting statistics\nprovides UL fluences in the range 0.4-1 MeV, for a 300 microseconds\nintegration time, from a minimum of 1.1E-08 erg cm^-2 to a maximum\nof 4.4E-08 erg cm^-2.\n\nWe notice the detection of a short pulse in the energy range 0.4-1.4\nMeV with S/N 5.7 at time T0+10.77 s.\n\nThe AGILE/MCAL detector is a CsI detector with a 4 pi FoV, sensitive\nin the energy range 0.4-100 MeV. Additional analysis of AGILE data\nis in progress.\n\n",
"published": "2023-05-19T11:54:14.101041Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-05-19T11:54:14.101060Z",
"modified": "2023-05-19T11:54:14.106938Z",
"targets": []
},
{
"id": 9,
"topic": "gcn.circular",
"uuid": "f0271309-5891-4338-8a12-203a879e61bb",
"title": "LIGO/Virgo S230518h: Swift XRT observations, 8 X-ray sources",
"submitter": "Hop gcn.circular",
"authors": "P.A. Evans at U. Leicester <pae9@leicester.ac.uk>",
"data": {
"date": "23/05/19 10:44:27 GMT",
"from": "P.A. Evans at U. Leicester <pae9@leicester.ac.uk>",
"title": "GCN CIRCULAR",
"number": "33824",
"subject": "LIGO/Virgo S230518h: Swift XRT observations, 8 X-ray sources"
},
"message_text": "P.A. Evans (U. Leicester), J.A. Kennea (PSU), A. Tohuvavohu (U. Toronto), A.P.\nBeardmore (U. Leicester), M.G. Bernardini (INAF-OAB), A.A. Breeveld (UCL-MSSL),\nS. Campana (INAF-OAB), S.B. Cenko (NASA/GSFC), P. D'Avanzo (INAF-OAB), R.A.J.\nEyles-Ferris (U. Leicester), C. Gronwall (PSU), D. Hartmann (U. Clemson), N.J.\nKlingler (NASA/GSFC), N.P.M. Kuin (UCL-MSSL), A.Y. Lien (GSFC/UMBC), F.E.\nMarshall (NASA/GSFC), A. Melandri (INAF-OAB), J.A. Nousek (PSU), S.R. Oates (U.\nBirmingham), P.T. O'Brien (U. Leicester), J.P.Osborne (U. Leicster), K.L. Page\n(U.Leicester), M.J.Page (UCL-MSSL), B. Sbarufatti (INAF-OAB), M.H. Siegel (PSU),\nG. Tagliaferri (INAF-OAB), E. Troja (U Tor Vergata, INAF) report on behalf of\nthe Swift team:\n\nSwift has carried out 60 observations of the LVC error region for the GW trigger\nS230518h convolved with the 2MPZ catalogue (Bilicki et al. 2014, ApJS, 210, 9),\nusing the 'BAYESTAR' GW localisation map. As this is a 3D skymap, galaxy\ndistances were taken into account in selecting which ones to observe. The\nobservations currently span from 7.8 ks to 35 ks after the LVC trigger, and\nthe XRT has covered 6.0 deg^2 on the sky (corrected for overlaps). This covers\n1% of the probability in the 'ligo-skymap-from-samples' skymap, and 4.7% after\nconvolving with the 2MPZ galaxy catalogue, as described by Evans et al. (2016,\nMNRAS, 462, 1591). These pointings and associated metadata have been reported to\nthe Treasure Map.\n\nIn total, we have detected 8 X-ray sources. Each source is assigned a rank of\n1-4 which describes how likely it is to be related to the GW trigger, with 1\nbeing the most likely and 4 being the least likely. The ranks are described at\nhttps://www.swift.ac.uk/ranks.php.\n\nWe have found:\n\n * 0 sources of rank 1\n * 1 source of rank 2\n * 1 source of rank 3\n * 6 sources of rank 4\n\nThe 'rank 2' source was identified as such because it is uncatalogued in X-rays, and in\nthe initial analysis its flux was found to be significantly above the upper-limit from\nthe ROSAT All Sky Survey. However, this assumes a standard spectral model; using a model\nfitted to the data from source 2 for this conversion we find that the XRT observed flux\nis consistent with the ROSAT non-detection and so cannot be identified as a transient.\n\n\nDetails of all of the detected sources, by rank, are given below. All\ncoordinates are in J2000.\n\nRANK 2 sources\n=============\nThese are uncatalogued X-ray sources, which in the inital X-ray analysis had fluxes above the\nhistorical 3-sigma upper limits.\n\n| Source ID | RA | Dec | Err90 |\n| S230518h_X8 | 22h 19m 10.78s | -84d 49' 08.0\" | 7.8\" |\n\n\n\nRANK 3 sources\n=============\nThese are uncatalogued X-ray sources, however they are not brighter than\nprevious upper limits, so do not stand out as likely counterparts to the GW\ntrigger.\n\n| Source ID | RA | Dec | Err90 |\n| S230518h_X6 | 07h 46m 12.93s | -54d 02' 40.3\" | 7.8\" |\n\n\nRANK 4 sources\n=============\nThese are catalogued X-ray sources, showing no signs of outburst compared to\nprevious observations, so they are not likely to be related to the GW trigger.\n\n| Source ID | RA | Dec | Err90 |\n| S230518h_X1 | 20h 40m 07.33s | -71d 15' 02.7\" | 4.6\" |\n| S230518h_X2 | 20h 41m 59.36s | -73d 19' 09.5\" | 7.7\" |\n| S230518h_X3 | 20h 02m 16.15s | -83d 26' 41.9\" | 6.3\" |\n| S230518h_X4 | 07h 45m 07.88s | -54d 04' 50.7\" | 17.1\" |\n| S230518h_X5 | 07h 45m 09.54s | -54d 05' 45.3\" | 15.4\" |\n| S230518h_X7 | 07h 02m 12.02s | -86d 43' 48.3\" | 6.7\" |\n\nFor all flux conversions and comparisons with catalogues and upper limits from\nother missions, we assumed a power-law spectrum with NH=3x10^20 cm^-2, and\nphoton index (Gamma)=1.7\n\nThe results of the XRT automated analysis, including details of the sources\nlisted above, are online at https://www.swift.ac.uk/LVC/S230518h\n\nThis circular is an official product of the Swift XRT team.\n\n\n",
"published": "2023-05-19T10:44:36.417489Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-05-19T10:44:36.417508Z",
"modified": "2023-05-19T10:44:36.424793Z",
"targets": []
},
{
"id": 8,
"topic": "gcn.circular",
"uuid": "ac8eccff-1cb7-4967-8c81-eea623908a22",
"title": "LIGO/Virgo/KAGRA S230518h: Coverage and upper limits from MAXI/GSC observations",
"submitter": "Hop gcn.circular",
"authors": "Motoko Serino at Aoyama Gakuin U. <serino@phys.aoyama.ac.jp>",
"data": {
"date": "23/05/19 09:51:52 GMT",
"from": "Motoko Serino at Aoyama Gakuin U. <serino@phys.aoyama.ac.jp>",
"title": "GCN CIRCULAR",
"number": "33823",
"subject": "LIGO/Virgo/KAGRA S230518h: Coverage and upper limits from MAXI/GSC observations"
},
"message_text": "M. Serino, S. Sugita (AGU),\nH. Negoro (Nihon U.),\nN. Kawai (RIKEN),\nM. Nakajima, K. Kobayashi, M. Tanaka, Y. Soejima, Y. Kudo (Nihon U.),\nT. Mihara, T. Kawamuro, S. Yamada, T. Tamagawa, M. Matsuoka (RIKEN),\nT. Sakamoto, H. Hiramatsu, H. Nishikawa, A. Yoshida (AGU),\nY. Tsuboi, S. Urabe, S. Nawa, N. Nemoto (Chuo U.),\nM. Shidatsu (Ehime U.),\nI. Takahashi, M. Niwano, S. Sato, N. Higuchi, Y. Yatsu (Tokyo Tech),\nS. Nakahira, S. Ueno, H. Tomida, M. Ishikawa, S. Ogawa, T. Kurihara (JAXA),\nY. Ueda, K. Setoguchi, T. Yoshitake, Y. Nakatani (Kyoto U.),\nM. Yamauchi, Y. Hagiwara, Y. Umeki, Y. Otsuki (Miyazaki U.),\nK. Yamaoka (Nagoya U.),\nY. Kawakubo (LSU),\nM. Sugizaki (NAOC),\nW. Iwakiri (Chiba U.)\nreport on behalf of the MAXI team:\n\nWe examined MAXI/GSC all-sky X-ray images (2-20 keV)\nafter the compact binary merger candidate S230518h at 2023-05-18 12:59:08.167 UTC (GCN 33813).\n\nAt the trigger time of S230518h, the high-voltage of MAXI/GSC was on,\nbut the FOV was out of the 90% credible region of the bayestar skymap.\nThe first one-orbit (92 min) scan observation with GSC after the event covered 70%\nof the 90% credible region of the bayestar skymap from 13:24:45 to 14:16:55 UTC (T0+1537 to T0+4667 sec).\n\nNo significant new source was found in the region in the one-orbit scan observation.\nA typical 1-sigma averaged upper limit obtained in one scan observation\nis 20 mCrab at 2-20 keV.\n\nIf you require information about X-ray flux by MAXI/GSC at specific coordinates,\nplease contact the submitter of this circular by email.\n\n",
"published": "2023-05-19T09:52:01.853642Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-05-19T09:52:01.853661Z",
"modified": "2023-05-19T09:52:01.862152Z",
"targets": []
},
{
"id": 5,
"topic": "gcn.circular",
"uuid": "357b32eb-66c1-456f-a2b3-3563082d5c16",
"title": "LIGO/Virgo/Kagra S230518h: NED Galaxies in the Localization Volume",
"submitter": "Hop gcn.circular",
"authors": "David Cook at Caltech/IPAC-NED <dcook@ipac.caltech.edu>",
"data": {
"date": "23/05/18 21:55:55 GMT",
"from": "David Cook at Caltech/IPAC-NED <dcook@ipac.caltech.edu>",
"title": "GCN CIRCULAR",
"number": "33820",
"subject": "LIGO/Virgo/Kagra S230518h: NED Galaxies in the Localization Volume"
},
"message_text": "David O. Cook (Caltech/IPAC), Rick Ebert (Caltech/IPAC), George Helou (Caltech/IPAC), Joseph M. Mazzarella (Caltech/IPAC), Marion Schmitz (Caltech/IPAC), and Leo Singer (NASA/GSFC)\n\nOn behalf of the NASA/IPAC Extragalactic Database (NED) Team.\n\nWe spatially cross-matched the LVK S230518h-3-Update sky localization with the NED Local Volume Sample (NED-LVS; Cook et al. 2023 submitted), which is a subset of NED with a redshift or redshift-independent distance less than 1000 Mpc. We find 6336 galaxies within the 90% containment volume, and we list here the top 20 galaxies located in the 90% volume sorted by the joint probability of the 3D localization and the WISE W1 luminosity (an observable proxy for stellar mass). For the full list of galaxies in the 90% volume go to the NED Gravitational Wave Followup service at https://ned.ipac.caltech.edu/uri/NED::GWF/.\n\nThe NED-GWF service provides downloadable galaxy lists and visualizations for candidate host galaxies. For each GW alert, these products are automatically generated and made available within minutes to expedite efficient electromagnetic followup observations. The NED top 20 list is sorted by the joint probability of the 3D localization and the WISE W1 luminosity, but users can sort on additional pre-computed prioritization metrics (star formation rate, P_3D*P_SFR; and specific star formation rate, P_3D*P_sSFR; etc.) which are available via downloading the entire galaxy list inside the event's probability volume.\n\n Galaxy RA Dec Distance m_NUV mErr_NUV m_Ks mErr_Ks m_W1 mErr_W1 P_3D P_3D_LumW1\n (Deg) (Deg) (Mpc) (AB) (mag) (Vega) (mag) (Vega) (mag) (Prob) (Prob)\n------------------------- ---------- ---------- ------- ----- --------- ----- -------- ----- -------- -------- ----------\nWISEA J061043.04-023625.2 92.679167 -2.606972 330.48 -- -- 13.61 0.18 9.21 0.01 8.92e-01 2.03e-03\nWISEA J055357.30-060207.5 88.488792 -6.036111 224.38 -- -- 13.16 0.22 8.50 0.01 8.37e-01 1.79e-03\nWISEA J071238.60-372350.1 108.161375 -37.397306 390.44 -- -- 13.39 0.19 9.73 0.01 7.31e-01 1.46e-03\nWISEA J073438.51-432253.0 113.660542 -43.381306 383.92 -- -- 13.68 0.22 9.90 0.01 8.82e-01 1.43e-03\nWISEA J072905.20-623320.6 112.271625 -62.555722 393.80 -- -- 13.64 0.16 9.97 0.00 8.92e-01 1.40e-03\nWISEA J083134.97-803600.3 127.896000 -80.600111 379.45 -- -- 12.90 0.13 9.85 0.01 8.41e-01 1.34e-03\nWISEA J201533.66-842204.1 303.890667 -84.367722 311.23 -- -- 12.78 0.15 9.22 0.00 6.58e-01 1.28e-03\nWISEA J072738.54-425615.1 111.910625 -42.937667 413.61 -- -- 13.24 0.15 10.12 0.01 8.49e-01 1.28e-03\nWISEA J051736.04+131107.5 79.400292 13.185306 257.07 -- -- 12.35 0.10 8.88 0.01 6.50e-01 1.27e-03\nWISEA J070806.23-280528.7 107.025875 -28.091250 363.10 -- -- 12.97 0.12 9.83 0.01 8.36e-01 1.26e-03\nWISEA J071641.54-440551.7 109.173125 -44.097722 405.31 -- -- 13.57 0.19 10.10 0.01 8.38e-01 1.22e-03\nWISEA J071514.23-444325.0 108.809292 -44.723639 310.49 -- -- 13.22 0.21 9.57 0.01 8.01e-01 1.11e-03\nWISEA J070342.88-284717.5 105.928583 -28.788250 393.85 -- -- 13.08 0.12 10.03 0.01 7.57e-01 1.11e-03\nWISEA J071442.74-325953.2 108.678125 -32.998472 332.08 -- -- 13.13 0.22 9.73 0.01 7.63e-01 1.05e-03\nWISEA J072927.23-514825.9 112.363833 -51.807111 371.85 -- -- 13.15 0.12 10.17 0.01 8.31e-01 9.62e-04\nWISEA J063501.19-220426.1 98.754542 -22.073778 339.10 -- -- 13.60 0.21 9.97 0.01 7.93e-01 9.05e-04\nWISEA J074213.61-513130.2 115.556667 -51.524778 307.38 -- -- 12.67 0.06 9.86 0.01 8.44e-01 9.04e-04\nWISEA J073702.29-543332.7 114.259500 -54.559083 324.86 -- -- 12.06 0.13 9.82 0.00 7.43e-01 9.00e-04\nWISEA J071346.05-430854.4 108.441833 -43.148472 394.97 -- -- 13.68 0.21 10.54 0.01 8.70e-01 7.98e-04\nWISEA J070806.38-405759.9 107.027042 -40.967000 284.57 -- -- 13.79 0.14 9.81 0.01 8.35e-01 7.82e-04\n\nTable: Top 20 galaxies in NED-LVS that fall in the 90% probability volume for S230518h sorted by the joint probability of 3D position and WISE W1 luminosity (P_3D*P_LumW1). Galaxy is the NED preferred name. RA and Dec are the Equatorial coordinates in degrees (J2000). Distance is the distance to the galaxy in Mpc. m_NUV and mErr_NUV are the apparent magnitude and error from GALEX. m_Ks and mErr_Ks are the apparent magnitude and error from 2MASS. m_W1 and mErr_W1 are the apparent magnitude and error from AllWISE. P_3D is the probability that the galaxy is in the volume given the distance of GW event. P_3D_LumW1 is the joint probability within the volume weighted by the WISE1 luminosity of the galaxy (P_3D * P_LumW1).\n\n",
"published": "2023-05-18T21:56:04.482867Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-05-18T21:56:04.482886Z",
"modified": "2023-05-18T21:56:04.489174Z",
"targets": []
},
{
"id": 4,
"topic": "gcn.circular",
"uuid": "49515ae5-9f49-46c3-a249-6a30131e357d",
"title": "LIGO/Virgo/KAGRA S230518h: AstroSat CZTI non-detection and upper limits",
"submitter": "Hop gcn.circular",
"authors": "Gaurav Waratkar at IIT Bombay <gauravwaratkar@iitb.ac.in>",
"data": {
"date": "23/05/18 20:42:47 GMT",
"from": "Gaurav Waratkar at IIT Bombay <gauravwaratkar@iitb.ac.in>",
"title": "GCN CIRCULAR",
"number": "33819",
"subject": "LIGO/Virgo/KAGRA S230518h: AstroSat CZTI non-detection and upper limits"
},
"message_text": "G. Waratkar (IITB), V. Bhalerao (IITB), M. Dixit (IITB), A. Ahmad (IITB), D. Bhattacharya (IUCAA), A. R. Rao (TIFR), S. Vadawale (PRL) report on behalf of the AstroSat CZTI collaboration:\n\nWe have carried out a search for X-ray candidates in AstroSat CZTI data in a 1000-sec window centered on the trigger time of the NSBH merger event candidate S230518h (UTC 2023-05-18 12:59:08, GCN Circular 33813). We use the Bilby.multiorder.fits,0 map (https://gracedb.ligo.org/api/superevents/S230518h/files/Bilby.multiorder.fits,0) for our analysis. CZTI is a coded aperture mask instrument that has a considerable effective area for about 29% of the entire sky and is also sensitive to brighter transients from the entire sky. At the time of the merger, AstroSat's nominal pointing is RA, DEC = 12:37:01.5, 14:12:34.4 (189.2562,14.2096), which is ~96 deg away from the maximum probability location. At the time of the merger event, the Earth-satellite-transient angle corresponding to the maximum probability location is ~43 deg and hence is occulted by Earth in the satellite's frame. The region of the localization map which is not occulted by Earth in the satellite's frame has a total probability of 0.26 (26%).\n\nCZTI data were de-trended to remove orbit-wise background variation. We then searched data from the four independent, identical quadrants to look for coincident spikes in the count rates. Searches were undertaken by binning the data in 0.1s, 1s, and 10s respectively. Statistical fluctuations in background count rates were estimated by using data from 5 preceding orbits. We selected confidence levels such that the probability of a false trigger in a 1000 sec window is 10^-4. We do not find any evidence for any hard X-ray transient in this window, in the CZTI energy range of 20-200 keV.\n\nWe use a detailed mass model of the satellite to calculate the direction-dependent instrument response for points in the visible sky. We then assume the source is modeled as a power law with photon index alpha = -1, and convert our count rate upper limits to direction-dependent flux limits. We obtain the following upper limits for source flux in the 20-200 keV band by taking a probability-weighted mean over the visible sky:\n\n0.1 s: flux limit= 2.01e-05 ergs/cm^2/s; fluence limit = 2.01e-06 ergs/cm^2\n1.0 s: flux limit= 7.30e-06 ergs/cm^2/s; fluence limit = 7.30e-06 ergs/cm^2\n10.0 s: flux limit= 8.25e-07 ergs/cm^2/s; fluence limit = 8.25e-06 ergs/cm^2\n\nCZTI is built by a TIFR-led consortium of institutes across India, including VSSC, URSC, IUCAA, SAC, and PRL. The Indian Space Research Organisation funded, managed, and facilitated the project.\n\n",
"published": "2023-05-18T20:42:56.901117Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-05-18T20:42:56.901135Z",
"modified": "2023-05-18T20:42:56.907655Z",
"targets": []
},
{
"id": 3,
"topic": "gcn.circular",
"uuid": "7752b1e5-5c0c-4f0b-93c3-bd7d76d76356",
"title": "LIGO/Virgo/KAGRA S230518h: Upper limits from Fermi-GBM Observations",
"submitter": "Hop gcn.circular",
"authors": "Sarah Dalessi at UAH <sd0104@uah.edu>",
"data": {
"date": "23/05/18 20:36:37 GMT",
"from": "Sarah Dalessi at UAH <sd0104@uah.edu>",
"title": "GCN CIRCULAR",
"number": "33818",
"subject": "LIGO/Virgo/KAGRA S230518h: Upper limits from Fermi-GBM Observations"
},
"message_text": "S. Dalessi (UAH) and C. Fletcher (USRA) report on behalf of the\nFermi-GBM Team and the GBM-LIGO/Virgo/KAGRA group\n\nFor S230518h and using the updated Bilby skymap (GCN 33816), Fermi-GBM\nwas observing 48.9% of the localization probability at event time.\n\nThere was no Fermi-GBM onboard trigger around the event time of the\nLIGO/Virgo/KAGRA (LVK) detection of GW trigger S230518h (GCN 33813).\nAn automated, blind search for short gamma-ray bursts below the\nonboard triggering threshold in Fermi-GBM also identified no\ncounterpart candidates. The GBM targeted search, the most sensitive,\ncoherent search for GRB-like signals, was run from +/-30 s around\nmerger time, and also identified no counterpart candidates.\n\nPart of the LVK localization region is behind the Earth for Fermi,\nlocated at an RA2.3, Dec=-3.6 with a radius of 67.6 degrees. We\ntherefore set upper limits on impulsive gamma-ray emission for the LVK\nConsortia localization region visible to Fermi at merger time. Using\nthe representative soft, normal, and hard GRB-like templates described\nin arXiv:1612.02395, we set the following 3 sigma flux upper limits\nover 10-1000 keV, weighted by GW localization probability (in units of\n10^-7 erg/s/cm^2):\n\nTimescale Soft Normal Hard\n------------------------------------\n0.128 s: 1.4 2.7 6.1\n1.024 s: 0.4 0.8 2.0\n8.192 s: 0.1 0.3 0.8\n\nAssuming the median luminosity distance of 277.9 Mpc from the GW\ndetection, we estimate the following intrinsic luminosity upper limits\nover the 1 keV-10 MeV energy range (in units of 10^50 erg/s):\n\nTimescale Soft Normal Hard\n------------------------------------\n0.128s: 0.020 0.035 0.132\n1.024s: 0.006 0.010 0.043\n8.192s: 0.002 0.004 0.018\n\n",
"published": "2023-05-18T20:36:57.345359Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-05-18T20:36:57.345376Z",
"modified": "2023-05-18T20:36:57.351013Z",
"targets": []
},
{
"id": 1,
"topic": "gcn.circular",
"uuid": "025112ec-3f89-43bb-b257-72a036144315",
"title": "LIGO/Virgo S230518h: Global MASTER-Net observations report",
"submitter": "Hop gcn.circular",
"authors": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"data": {
"date": "23/05/18 18:28:23 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "33817",
"subject": "LIGO/Virgo S230518h: Global MASTER-Net observations report"
},
"message_text": "V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko,\nG.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin\n(Lomonosov Moscow State University, SAI, Physics Department),\n\nR. Podesta, C.Lopez, F. Podesta, C.Francile\n(Observatorio Astronomico Felix Aguilar OAFA),\n\nR. Rebolo, M. Serra\n(The Instituto de Astrofisica de Canarias),\n\nD. Buckley\n(South African Astronomical Observatory),\n\nO.A. Gres, N.M. Budnev\n(Irkutsk State University, API),\n\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez\n(INAOE, Guillermo Haro Astrophysics Observatory),\n\nA. Tlatov, D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nA. Gabovich, V.Yurkov\n(Blagoveschensk Educational State University)\n\n\nMASTER-Amur robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Russia (Blagoveshchensk State Pedagogical University) started inspect of the LIGO/Virgo S230518h errorbox 192 sec after notice time and 10188 sec after trigger time at 2023-05-18 15:48:56 UT, with upper limit up to 17.7 mag. The observations began at zenith distance = 83 deg. The sun altitude is -20.3 deg.\n\nMASTER-SAAO robotic telescope located in South Africa (South African Astronomical Observatory) started inspect of the LIGO/Virgo S230518h errorbox 3191 sec after notice time and 13187 sec after trigger time at 2023-05-18 16:38:55 UT, with upper limit up to 17.7 mag. Observations started at twilight. The observations began at zenith distance = 43 deg. The sun altitude is -11.0 deg.\n\nThe galactic latitude b = -11 deg., longitude l = 223 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/ligo_1.php?id\u0011865\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 10278 | 2023-05-18 15:48:56 | MASTER-Amur | (23h 42m 34.05s , +27d 56m 23.2s) | C | 180 | 16.4 |\n 10486 | 2023-05-18 15:52:23 | MASTER-Amur | (23h 36m 00.68s , +26d 00m 33.9s) | C | 180 | 16.5 |\n 10686 | 2023-05-18 15:55:44 | MASTER-Amur | (23h 56m 30.29s , +27d 55m 52.4s) | C | 180 | 15.6 |\n 11213 | 2023-05-18 16:04:31 | MASTER-Amur | (00h 13m 40.72s , +29d 50m 21.9s) | C | 180 | 15.3 |\n 11413 | 2023-05-18 16:07:51 | MASTER-Amur | (23h 55m 58.92s , +31d 42m 40.7s) | C | 180 | 17.0 |\n 11647 | 2023-05-18 16:11:44 | MASTER-Amur | (00h 05m 25.45s , +31d 43m 52.8s) | C | 180 | 16.6 |\n 12170 | 2023-05-18 16:20:28 | MASTER-Amur | (23h 56m 00.17s , +31d 44m 12.4s) | C | 180 | 16.8 |\n 12370 | 2023-05-18 16:23:48 | MASTER-Amur | (00h 05m 18.97s , +31d 43m 14.6s) | C | 180 | 16.9 |\n 12571 | 2023-05-18 16:27:08 | MASTER-Amur | (23h 25m 22.89s , +27d 54m 58.8s) | C | 180 | 17.5 |\n 12770 | 2023-05-18 16:30:28 | MASTER-Amur | (23h 34m 20.58s , +27d 54m 00.4s) | C | 180 | 17.3 |\n 12970 | 2023-05-18 16:33:47 | MASTER-Amur | (23h 18m 57.17s , +26d 01m 19.5s) | C | 180 | 17.5 |\n 13170 | 2023-05-18 16:37:07 | MASTER-Amur | (23h 27m 50.84s , +25d 59m 52.3s) | C | 180 | 17.4 |\n 13278 | 2023-05-18 16:38:55 | MASTER-SAAO | (06h 32m 29.44s , -23d 26m 27.9s) | C | 180 | 17.3 |\n 13278 | 2023-05-18 16:38:55 | MASTER-SAAO | (06h 33m 19.54s , -23d 26m 52.9s) | C | 180 | 17.4 |\n 13370 | 2023-05-18 16:40:27 | MASTER-Amur | (23h 25m 21.09s , +27d 55m 38.3s) | C | 180 | 17.5 |\n 13489 | 2023-05-18 16:42:27 | MASTER-SAAO | (06h 41m 06.20s , -23d 27m 07.7s) | C | 180 | 15.8 |\n 13489 | 2023-05-18 16:42:27 | MASTER-SAAO | (06h 41m 56.73s , -23d 27m 32.5s) | C | 180 | 15.7 |\n 13569 | 2023-05-18 16:43:47 | MASTER-Amur | (23h 34m 18.00s , +27d 54m 49.9s) | C | 180 | 17.5 |\n 13689 | 2023-05-18 16:45:47 | MASTER-SAAO | (06h 26m 56.44s , -21d 32m 00.9s) | C | 180 | 15.9 |\n 13689 | 2023-05-18 16:45:47 | MASTER-SAAO | (06h 27m 46.21s , -21d 32m 26.0s) | C | 180 | 15.9 |\n 13769 | 2023-05-18 16:47:06 | MASTER-Amur | (23h 18m 51.54s , +26d 01m 33.5s) | C | 180 | 17.7 |\n 13901 | 2023-05-18 16:49:18 | MASTER-SAAO | (06h 35m 40.83s , -21d 32m 55.8s) | C | 180 | 17.7 |\n 13901 | 2023-05-18 16:49:18 | MASTER-SAAO | (06h 36m 30.85s , -21d 33m 20.5s) | C | 180 | 17.7 |\n 13968 | 2023-05-18 16:50:26 | MASTER-Amur | (23h 27m 53.06s , +26d 00m 39.5s) | C | 180 | 17.6 |\n 14112 | 2023-05-18 16:52:49 | MASTER-SAAO | (06h 22m 09.91s , -19d 39m 15.3s) | C | 180 | 15.3 |\n 14112 | 2023-05-18 16:52:49 | MASTER-SAAO | (06h 22m 59.36s , -19d 39m 40.9s) | C | 180 | 15.4 |\n 14168 | 2023-05-18 16:53:46 | MASTER-Amur | (23h 26m 09.80s , +20d 17m 47.3s) | C | 180 | 17.5 |\n 14569 | 2023-05-18 17:00:26 | MASTER-Amur | (23h 27m 45.99s , +22d 13m 09.2s) | C | 180 | 17.4 |\n 14769 | 2023-05-18 17:03:46 | MASTER-Amur | (23h 36m 17.86s , +22d 12m 37.0s) | C | 180 | 17.4 |\n 14969 | 2023-05-18 17:07:06 | MASTER-Amur | (23h 26m 03.47s , +20d 19m 20.5s) | C | 180 | 17.4 |\n 15391 | 2023-05-18 17:14:09 | MASTER-Amur | (23h 27m 38.02s , +22d 11m 11.9s) | C | 180 | 17.5 |\n 15591 | 2023-05-18 17:17:28 | MASTER-Amur | (23h 36m 21.64s , +22d 11m 45.9s) | C | 180 | 17.4 |\n 15791 | 2023-05-18 17:20:48 | MASTER-Amur | (23h 30m 53.60s , +24d 05m 24.2s) | C | 180 | 17.6 |\n 15991 | 2023-05-18 17:24:08 | MASTER-Amur | (23h 39m 42.89s , +24d 07m 13.7s) | C | 180 | 17.6 |\n 16190 | 2023-05-18 17:27:28 | MASTER-Amur | (00h 13m 23.27s , +27d 55m 46.2s) | C | 180 | 17.0 |\n 16390 | 2023-05-18 17:30:47 | MASTER-Amur | (00h 22m 34.20s , +27d 54m 50.2s) | C | 180 | 16.8 |\n 16789 | 2023-05-18 17:37:26 | MASTER-Amur | (00h 04m 00.08s , +27d 48m 45.4s) | C | 180 | 16.8 |\n 16989 | 2023-05-18 17:40:46 | MASTER-Amur | (00h 03m 57.56s , +27d 50m 06.1s) | C | 180 | 16.8 |\n 17189 | 2023-05-18 17:44:06 | MASTER-Amur | (00h 03m 57.25s , +27d 48m 30.8s) | C | 180 | 16.7 |\n 17875 | 2023-05-18 17:55:33 | MASTER-Amur | (23h 30m 51.84s , +24d 05m 05.7s) | C | 180 | 16.9 |\n 18075 | 2023-05-18 17:58:52 | MASTER-Amur | (23h 39m 33.41s , +24d 04m 17.8s) | C | 180 | 16.6 |\n 18280 | 2023-05-18 18:02:18 | MASTER-Amur | (00h 13m 26.48s , +27d 53m 29.6s) | C | 180 | 15.9 |\n 18480 | 2023-05-18 18:05:37 | MASTER-Amur | (00h 22m 26.18s , +27d 54m 42.7s) | C | 180 | 15.8 |\n 18679 | 2023-05-18 18:08:57 | MASTER-Amur | (23h 55m 59.05s , +29d 47m 58.1s) | C | 180 | 16.0 |\n 18879 | 2023-05-18 18:12:17 | MASTER-Amur | (00h 05m 53.80s , +29d 47m 33.9s) | C | 180 | 15.8 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n",
"published": "2023-05-18T18:28:33.247908Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-05-18T18:28:33.247934Z",
"modified": "2023-05-18T18:28:33.252792Z",
"targets": []
}
]
},
{
"event_id": "S230520ae",
"sequences": [
{
"id": 1,
"sequence_number": 1,
"sequence_type": "PRELIMINARY",
"message": {
"id": 20,
"topic": "igwn.gwalert",
"uuid": "778adb3d-2000-46e7-96a0-dc1b867c2f74",
"title": "S230520ae - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230520ae/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230520ae/view/"
},
"event": {
"far": 3.060602e-09,
"time": "2023-05-20T22:48:42.567Z",
"group": "CBC",
"search": "AllSky",
"area_50": 2.148591731740587,
"area_90": 2.148591731740587,
"duration": null,
"pipeline": "MBTA",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.0,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": true,
"skymap_hash": "21becb2f664f0c40555a248ab70224da",
"classification": {
"BBH": 0.999999865,
"BNS": 0.0,
"NSBH": 0.0,
"Terrestrial": 1.35e-07
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-05-20T22:49:12Z",
"superevent_id": "S230520ae",
"external_coinc": null
},
"message_text": "",
"published": "2023-05-20T22:49:14.185373Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-05-20T22:49:14.185416Z",
"modified": "2023-05-20T22:49:14.192279Z"
}
},
{
"id": 2,
"sequence_number": 2,
"sequence_type": "PRELIMINARY",
"message": {
"id": 21,
"topic": "igwn.gwalert",
"uuid": "77bfa136-42da-4960-a854-01cd06a0f6cf",
"title": "S230520ae - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230520ae/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230520ae/view/"
},
"event": {
"far": 3.060602e-09,
"time": "2023-05-20T22:48:42.567Z",
"group": "CBC",
"search": "AllSky",
"area_50": 2.148591731740587,
"area_90": 2.148591731740587,
"duration": null,
"pipeline": "MBTA",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.0,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": true,
"skymap_hash": "21becb2f664f0c40555a248ab70224da",
"classification": {
"BBH": 0.999999865,
"BNS": 0.0,
"NSBH": 0.0,
"Terrestrial": 1.35e-07
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-05-20T22:53:48Z",
"superevent_id": "S230520ae",
"external_coinc": null
},
"message_text": "",
"published": "2023-05-20T22:53:49.828057Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-05-20T22:53:49.828084Z",
"modified": "2023-05-20T22:53:49.832890Z"
}
},
{
"id": 3,
"sequence_number": 3,
"sequence_type": "INITIAL",
"message": {
"id": 25,
"topic": "igwn.gwalert",
"uuid": "d7f3db85-4529-4fe8-963e-45b259c088e9",
"title": "S230520ae - INITIAL",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230520ae/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230520ae/view/"
},
"event": {
"far": 3.060602e-09,
"time": "2023-05-20T22:48:42.567Z",
"group": "CBC",
"search": "AllSky",
"area_50": 2.148591731740587,
"area_90": 2.148591731740587,
"duration": null,
"pipeline": "MBTA",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.0,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": true,
"skymap_hash": "21becb2f664f0c40555a248ab70224da",
"classification": {
"BBH": 0.999999865,
"BNS": 0.0,
"NSBH": 0.0,
"Terrestrial": 1.35e-07
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "INITIAL",
"sequence_num": 3,
"time_created": "2023-05-21T01:54:35Z",
"superevent_id": "S230520ae",
"external_coinc": null
},
"message_text": "",
"published": "2023-05-21T01:54:37.039756Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-05-21T01:54:37.039797Z",
"modified": "2023-05-21T01:54:37.059565Z"
}
}
],
"references": []
},
{
"event_id": "S230520a",
"sequences": [],
"references": [
{
"id": 85,
"topic": "gcn.circular",
"uuid": "6dd8724c-1748-4908-9eb8-ea654d42dfd8",
"title": "LIGO/Virgo/KAGRA S230520ae: Updated Sky localization",
"submitter": "Hop gcn.circular",
"authors": "Deep Chatterjee at MIT <deep.chatterjee@ligo.org>",
"data": {
"date": "23/05/26 22:04:48 GMT",
"from": "Deep Chatterjee at MIT <deep.chatterjee@ligo.org>",
"title": "GCN CIRCULAR",
"number": "33883",
"subject": "LIGO/Virgo/KAGRA S230520ae: Updated Sky localization"
},
"message_text": "The LIGO Scientific Collaboration, the Virgo Collaboration, and the KAGRA Collaboration report:\n\nWe have conducted further analysis of the LIGO Hanford Observatory (H1) and LIGO Livingston Observatory (L1) data around the time of the compact binary merger (CBC) candidate S230520ae (GCN Circular 33838). Parameter estimation has been performed using Bilby [1] and a new sky map, Bilby.multiorder.fits,0, distributed via GCN Notice, is available for retrieval from the GraceDB event page:\n\nhttps://gracedb.ligo.org/superevents/S230520ae\n\nFor the Bilby.multiorder.fits,0 sky map, the 90% credible region is 1702 deg2. Marginalized over the whole sky, the a posteriori luminosity distance estimate is 2014 +/- 663 Mpc (a posteriori mean +/- standard deviation).\n\nFor further information about analysis methodology and the contents of this alert, refer to the LIGO/Virgo/KAGRA Public Alerts User Guide <https://emfollow.docs.ligo.org/userguide/>.\n\n [1] Ashton et al. ApJS 241, 27 (2019)\n\n",
"published": "2023-05-26T22:04:57.396439Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-05-26T22:04:57.396459Z",
"modified": "2023-05-26T22:04:57.402921Z",
"targets": []
},
{
"id": 33,
"topic": "gcn.circular",
"uuid": "a43acbc1-1e99-4a30-ab9a-8434871176a1",
"title": "LIGO/Virgo S230520ae: Global MASTER-Net observations report",
"submitter": "Hop gcn.circular",
"authors": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"data": {
"date": "23/05/21 20:30:51 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "33845",
"subject": "LIGO/Virgo S230520ae: Global MASTER-Net observations report"
},
"message_text": "V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko,\nG.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin\n(Lomonosov Moscow State University, SAI, Physics Department),\n\nR. Podesta, C.Lopez, F. Podesta, C.Francile\n(Observatorio Astronomico Felix Aguilar OAFA),\n\nR. Rebolo, M. Serra\n(The Instituto de Astrofisica de Canarias),\n\nD. Buckley\n(South African Astronomical Observatory),\n\nO.A. Gres, N.M. Budnev\n(Irkutsk State University, API),\n\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez\n(INAOE, Guillermo Haro Astrophysics Observatory),\n\nA. Tlatov, D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nA. Gabovich, V.Yurkov\n(Blagoveschensk Educational State University)\n\n\nMASTER-OAFA robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Argentina (OAFA observatory of San Juan National University) started inspect of the LIGO/Virgo S230520ae errorbox 304 sec after trigger time at 2023-05-20 22:53:46 UT, with upper limit up to 18.9 mag. Observations started at twilight. The observations began at zenith distance = 35 deg. The sun altitude is -14.8 deg.\n\nMASTER-SAAO robotic telescope located in South Africa (South African Astronomical Observatory) started inspect of the LIGO/Virgo S230520ae errorbox 4019 sec after trigger time at 2023-05-20 23:55:41 UT, with upper limit up to 19.4 mag. The observations began at zenith distance = 70 deg. The sun altitude is -68.4 deg.\n\nThe galactic latitude b = -7 deg., longitude l = 331 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/ligo_1.php?id\u0011868\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 395 | 2023-05-20 22:53:46 | MASTER-OAFA | (08h 34m 59.46s , -04d 04m 10.4s) | C | 180 | 18.8 |\n 1400 | 2023-05-20 23:10:31 | MASTER-OAFA | (08h 35m 02.58s , -04d 06m 16.3s) | C | 180 | 18.9 |\n 4110 | 2023-05-20 23:55:41 | MASTER-SAAO | (06h 50m 26.15s , -76d 35m 50.3s) | C | 180 | 13.5 |\n 4110 | 2023-05-20 23:55:41 | MASTER-SAAO | (06h 46m 47.54s , -76d 33m 59.0s) | C | 180 | 13.5 |\n 5801 | 2023-05-21 00:23:53 | MASTER-SAAO | (07h 55m 50.75s , -70d 51m 03.9s) | C | 180 | 14.2 |\n 5802 | 2023-05-21 00:23:53 | MASTER-SAAO | (07h 53m 14.78s , -70d 49m 02.1s) | C | 180 | 14.2 |\n 6470 | 2023-05-21 00:35:01 | MASTER-SAAO | (07h 31m 33.92s , -70d 52m 26.0s) | C | 180 | 18.3 |\n 6470 | 2023-05-21 00:35:01 | MASTER-SAAO | (07h 29m 00.58s , -70d 50m 24.1s) | C | 180 | 18.5 |\n 6680 | 2023-05-21 00:38:32 | MASTER-SAAO | (07h 55m 56.61s , -70d 52m 41.6s) | C | 180 | 17.3 |\n 6680 | 2023-05-21 00:38:32 | MASTER-SAAO | (07h 53m 23.13s , -70d 50m 39.1s) | C | 180 | 17.7 |\n 7338 | 2023-05-21 00:49:30 | MASTER-SAAO | (06h 00m 22.16s , -88d 03m 52.5s) | C | 180 | 14.6 |\n 7338 | 2023-05-21 00:49:30 | MASTER-SAAO | (05h 35m 33.68s , -88d 03m 56.6s) | C | 180 | 14.6 |\n 7773 | 2023-05-21 00:56:45 | MASTER-SAAO | (10h 28m 59.42s , -85d 54m 52.0s) | C | 180 | 13.4 |\n 7773 | 2023-05-21 00:56:45 | MASTER-SAAO | (10h 40m 37.79s , -85d 55m 57.8s) | C | 180 | 14.3 |\n 7985 | 2023-05-21 01:00:16 | MASTER-SAAO | (12h 34m 18.64s , -85d 57m 38.1s) | C | 180 | 17.5 |\n 7985 | 2023-05-21 01:00:16 | MASTER-SAAO | (12h 22m 27.76s , -85d 56m 20.2s) | C | 180 | 17.5 |\n 8206 | 2023-05-21 01:03:58 | MASTER-SAAO | (06h 01m 01.31s , -88d 03m 33.7s) | C | 180 | 18.8 |\n 8206 | 2023-05-21 01:03:58 | MASTER-SAAO | (05h 36m 25.68s , -88d 03m 40.2s) | C | 180 | 18.7 |\n 8431 | 2023-05-21 01:07:42 | MASTER-SAAO | (09h 49m 30.66s , -87d 50m 58.8s) | C | 180 | 19.2 |\n 8431 | 2023-05-21 01:07:42 | MASTER-SAAO | (10h 11m 31.17s , -87d 52m 07.7s) | C | 180 | 19.1 |\n 8642 | 2023-05-21 01:11:13 | MASTER-SAAO | (10h 40m 53.84s , -85d 55m 50.8s) | C | 180 | 19.0 |\n 8642 | 2023-05-21 01:11:13 | MASTER-SAAO | (10h 29m 19.50s , -85d 54m 47.0s) | C | 180 | 19.1 |\n 8853 | 2023-05-21 01:14:45 | MASTER-SAAO | (12h 34m 36.01s , -85d 56m 39.0s) | C | 180 | 18.8 |\n 8853 | 2023-05-21 01:14:45 | MASTER-SAAO | (12h 22m 51.95s , -85d 55m 21.3s) | C | 180 | 19.0 |\n 9067 | 2023-05-21 01:18:18 | MASTER-SAAO | (06h 48m 02.14s , -86d 08m 48.4s) | C | 180 | 19.0 |\n 9067 | 2023-05-21 01:18:18 | MASTER-SAAO | (06h 35m 36.74s , -86d 08m 00.8s) | C | 180 | 19.1 |\n 9278 | 2023-05-21 01:21:50 | MASTER-SAAO | (08h 28m 48.43s , -86d 02m 35.2s) | C | 180 | 18.6 |\n 9278 | 2023-05-21 01:21:50 | MASTER-SAAO | (08h 16m 18.52s , -86d 00m 39.3s) | C | 180 | 18.8 |\n 9704 | 2023-05-21 01:28:55 | MASTER-SAAO | (05h 01m 59.48s , -86d 14m 35.5s) | C | 180 | 18.9 |\n 9915 | 2023-05-21 01:32:26 | MASTER-SAAO | (06h 48m 41.99s , -86d 07m 21.2s) | C | 180 | 18.6 |\n 9915 | 2023-05-21 01:32:26 | MASTER-SAAO | (06h 36m 13.31s , -86d 06m 36.4s) | C | 180 | 18.6 |\n 10127 | 2023-05-21 01:35:58 | MASTER-SAAO | (08h 29m 06.72s , -86d 03m 38.5s) | C | 180 | 18.1 |\n 10127 | 2023-05-21 01:35:58 | MASTER-SAAO | (08h 16m 36.28s , -86d 01m 42.5s) | C | 180 | 18.2 |\n 10552 | 2023-05-21 01:43:04 | MASTER-SAAO | (05h 02m 15.50s , -86d 15m 29.1s) | C | 180 | 17.5 |\n 10975 | 2023-05-21 01:50:07 | MASTER-SAAO | (05h 45m 39.73s , -84d 16m 12.5s) | C | 180 | 18.4 |\n 10975 | 2023-05-21 01:50:07 | MASTER-SAAO | (05h 54m 10.14s , -84d 17m 06.9s) | C | 180 | 18.4 |\n 11187 | 2023-05-21 01:53:38 | MASTER-SAAO | (06h 56m 48.03s , -84d 11m 55.5s) | C | 180 | 18.9 |\n 11187 | 2023-05-21 01:53:38 | MASTER-SAAO | (07h 05m 13.36s , -84d 12m 56.9s) | C | 180 | 18.9 |\n 11398 | 2023-05-21 01:57:09 | MASTER-SAAO | (08h 04m 42.42s , -84d 08m 43.0s) | C | 180 | 18.7 |\n 11398 | 2023-05-21 01:57:09 | MASTER-SAAO | (08h 13m 13.68s , -84d 10m 38.6s) | C | 180 | 18.7 |\n 11821 | 2023-05-21 02:04:12 | MASTER-SAAO | (05h 45m 43.25s , -84d 17m 58.3s) | C | 180 | 18.7 |\n 11821 | 2023-05-21 02:04:12 | MASTER-SAAO | (05h 54m 27.78s , -84d 19m 02.4s) | C | 180 | 18.6 |\n 12033 | 2023-05-21 02:07:44 | MASTER-SAAO | (06h 57m 08.14s , -84d 12m 38.6s) | C | 180 | 18.8 |\n 12033 | 2023-05-21 02:07:44 | MASTER-SAAO | (07h 05m 42.68s , -84d 13m 44.3s) | C | 180 | 18.9 |\n 12244 | 2023-05-21 02:11:15 | MASTER-SAAO | (08h 04m 54.44s , -84d 09m 42.3s) | C | 180 | 18.8 |\n 12244 | 2023-05-21 02:11:15 | MASTER-SAAO | (08h 13m 24.73s , -84d 11m 38.0s) | C | 180 | 18.8 |\n 12454 | 2023-05-21 02:14:45 | MASTER-SAAO | (09h 15m 06.19s , -84d 06m 09.5s) | C | 180 | 18.9 |\n 12454 | 2023-05-21 02:14:45 | MASTER-SAAO | (09h 23m 36.32s , -84d 08m 07.7s) | C | 180 | 18.9 |\n 12677 | 2023-05-21 02:18:28 | MASTER-SAAO | (11h 01m 08.27s , -84d 02m 54.6s) | C | 180 | 18.4 |\n 12677 | 2023-05-21 02:18:29 | MASTER-SAAO | (10h 53m 11.45s , -84d 01m 51.7s) | C | 180 | 18.6 |\n 12890 | 2023-05-21 02:22:01 | MASTER-SAAO | (05h 20m 00.32s , -82d 27m 45.4s) | C | 180 | 17.1 |\n 13102 | 2023-05-21 02:25:33 | MASTER-SAAO | (06h 14m 12.94s , -82d 22m 49.6s) | C | 180 | 16.6 |\n 13102 | 2023-05-21 02:25:33 | MASTER-SAAO | (06h 20m 29.05s , -82d 23m 52.7s) | C | 180 | 16.7 |\n 13313 | 2023-05-21 02:29:05 | MASTER-SAAO | (09h 15m 31.51s , -84d 05m 21.9s) | C | 180 | 19.0 |\n 13313 | 2023-05-21 02:29:05 | MASTER-SAAO | (09h 23m 57.96s , -84d 07m 19.5s) | C | 180 | 18.9 |\n 13534 | 2023-05-21 02:32:45 | MASTER-SAAO | (11h 01m 26.59s , -84d 05m 04.1s) | C | 180 | 18.4 |\n 13534 | 2023-05-21 02:32:45 | MASTER-SAAO | (10h 53m 29.73s , -84d 04m 02.3s) | C | 180 | 18.7 |\n 13746 | 2023-05-21 02:36:17 | MASTER-SAAO | (05h 20m 04.03s , -82d 26m 11.4s) | C | 180 | 19.2 |\n 13957 | 2023-05-21 02:39:48 | MASTER-SAAO | (06h 14m 11.06s , -82d 22m 32.0s) | C | 180 | 19.1 |\n 13957 | 2023-05-21 02:39:48 | MASTER-SAAO | (06h 20m 26.60s , -82d 23m 35.1s) | C | 180 | 19.2 |\n 14167 | 2023-05-21 02:43:18 | MASTER-OAFA | (08h 19m 51.05s , -68d 48m 26.7s) | C | 180 | 18.6 |\n 14366 | 2023-05-21 02:46:37 | MASTER-OAFA | (08h 42m 21.18s , -68d 47m 25.5s) | C | 180 | 18.5 |\n 14379 | 2023-05-21 02:46:51 | MASTER-SAAO | (06h 31m 33.57s , -80d 28m 38.6s) | C | 180 | 18.9 |\n 14379 | 2023-05-21 02:46:51 | MASTER-SAAO | (06h 36m 34.45s , -80d 29m 45.3s) | C | 180 | 19.0 |\n 14565 | 2023-05-21 02:49:57 | MASTER-OAFA | (07h 37m 13.81s , -68d 49m 42.8s) | C | 180 | 18.5 |\n 14765 | 2023-05-21 02:53:16 | MASTER-OAFA | (07h 59m 36.92s , -68d 48m 16.3s) | C | 180 | 18.5 |\n 14800 | 2023-05-21 02:53:51 | MASTER-SAAO | (06h 43m 35.73s , -78d 33m 54.7s) | C | 180 | 18.9 |\n 14800 | 2023-05-21 02:53:51 | MASTER-SAAO | (06h 47m 46.68s , -78d 35m 06.8s) | C | 180 | 19.0 |\n 14964 | 2023-05-21 02:56:36 | MASTER-OAFA | (08h 19m 53.79s , -68d 47m 37.1s) | C | 180 | 18.6 |\n 15164 | 2023-05-21 02:59:55 | MASTER-OAFA | (08h 42m 11.96s , -68d 47m 48.8s) | C | 180 | 18.6 |\n 15221 | 2023-05-21 03:00:52 | MASTER-SAAO | (06h 36m 37.64s , -80d 29m 08.2s) | C | 180 | 18.9 |\n 15221 | 2023-05-21 03:00:52 | MASTER-SAAO | (06h 31m 36.07s , -80d 27m 59.8s) | C | 180 | 18.9 |\n 15367 | 2023-05-21 03:03:18 | MASTER-OAFA | (07h 37m 14.15s , -68d 49m 34.5s) | C | 180 | 17.8 |\n 15644 | 2023-05-21 03:07:55 | MASTER-SAAO | (06h 47m 50.93s , -78d 34m 38.5s) | C | 180 | 19.1 |\n 15644 | 2023-05-21 03:07:55 | MASTER-SAAO | (06h 43m 40.04s , -78d 33m 25.9s) | C | 180 | 19.0 |\n 15673 | 2023-05-21 03:08:25 | MASTER-OAFA | (07h 06m 37.87s , -56d 00m 32.8s) | C | 180 | 12.2 |\n 15729 | 2023-05-21 03:09:20 | MASTER-OAFA | (07h 18m 32.80s , -55d 33m 21.2s) | C | 180 | 17.9 |\n 15855 | 2023-05-21 03:11:26 | MASTER-SAAO | (06h 32m 32.51s , -74d 48m 33.7s) | C | 180 | 18.7 |\n 15855 | 2023-05-21 03:11:26 | MASTER-SAAO | (06h 29m 23.66s , -74d 47m 15.4s) | C | 180 | 18.6 |\n 16065 | 2023-05-21 03:14:57 | MASTER-SAAO | (07h 02m 54.54s , -74d 45m 04.4s) | C | 180 | 18.4 |\n 16065 | 2023-05-21 03:14:57 | MASTER-SAAO | (06h 59m 46.80s , -74d 43m 45.2s) | C | 180 | 18.4 |\n 16097 | 2023-05-21 03:15:29 | MASTER-OAFA | (07h 45m 38.65s , -55d 32m 08.0s) | C | 180 | 18.0 |\n 16275 | 2023-05-21 03:18:27 | MASTER-SAAO | (06h 41m 30.23s , -72d 52m 29.0s) | C | 180 | 18.4 |\n 16275 | 2023-05-21 03:18:27 | MASTER-SAAO | (06h 38m 42.80s , -72d 51m 07.5s) | C | 180 | 18.4 |\n 16487 | 2023-05-21 03:21:58 | MASTER-SAAO | (07h 08m 31.83s , -72d 51m 44.5s) | C | 180 | 18.4 |\n 16487 | 2023-05-21 03:21:58 | MASTER-SAAO | (07h 05m 44.70s , -72d 50m 22.0s) | C | 180 | 18.4 |\n 16616 | 2023-05-21 03:24:08 | MASTER-OAFA | (07h 04m 07.45s , -55d 33m 45.8s) | C | 180 | 17.8 |\n 16699 | 2023-05-21 03:25:30 | MASTER-SAAO | (06h 32m 27.34s , -74d 47m 00.7s) | C | 180 | 18.7 |\n 16699 | 2023-05-21 03:25:30 | MASTER-SAAO | (06h 29m 18.81s , -74d 45m 39.8s) | C | 180 | 18.6 |\n 16910 | 2023-05-21 03:29:02 | MASTER-SAAO | (07h 03m 00.05s , -74d 46m 16.6s) | C | 180 | 18.6 |\n 16910 | 2023-05-21 03:29:02 | MASTER-SAAO | (06h 59m 51.99s , -74d 44m 55.2s) | C | 180 | 18.6 |\n 17033 | 2023-05-21 03:31:04 | MASTER-OAFA | (07h 45m 37.84s , -55d 33m 06.2s) | C | 180 | 17.9 |\n 17121 | 2023-05-21 03:32:33 | MASTER-SAAO | (06h 41m 24.73s , -72d 54m 41.5s) | C | 180 | 18.6 |\n 17121 | 2023-05-21 03:32:33 | MASTER-SAAO | (06h 38m 36.88s , -72d 53m 18.2s) | C | 180 | 18.4 |\n 17333 | 2023-05-21 03:36:04 | MASTER-SAAO | (07h 08m 38.79s , -72d 52m 39.3s) | C | 180 | 18.4 |\n 17333 | 2023-05-21 03:36:04 | MASTER-SAAO | (07h 05m 51.48s , -72d 51m 15.8s) | C | 180 | 18.4 |\n 17544 | 2023-05-21 03:39:35 | MASTER-SAAO | (17h 51m 57.07s , -86d 10m 46.5s) | C | 180 | 19.0 |\n 17544 | 2023-05-21 03:39:35 | MASTER-SAAO | (18h 04m 35.92s , -86d 12m 56.9s) | C | 180 | 19.1 |\n 17558 | 2023-05-21 03:39:49 | MASTER-OAFA | (07h 19m 34.31s , -44d 11m 10.4s) | C | 180 | 16.6 |\n 17965 | 2023-05-21 03:46:37 | MASTER-SAAO | (20h 32m 10.54s , -88d 12m 05.7s) | C | 180 | 18.9 |\n 18029 | 2023-05-21 03:47:41 | MASTER-OAFA | (08h 00m 29.96s , -66d 54m 10.0s) | C | 180 | 18.0 |\n 18290 | 2023-05-21 03:52:02 | MASTER-OAFA | (06h 57m 39.69s , -69d 19m 39.8s) | C | 180 | 13.1 |\n 18403 | 2023-05-21 03:53:54 | MASTER-SAAO | (17h 51m 57.78s , -86d 10m 40.1s) | C | 180 | 19.4 |\n 18403 | 2023-05-21 03:53:54 | MASTER-SAAO | (18h 04m 29.07s , -86d 12m 36.0s) | C | 180 | 19.3 |\n 18522 | 2023-05-21 03:55:54 | MASTER-OAFA | (07h 16m 35.59s , -68d 48m 37.6s) | C | 180 | 17.6 |\n 18824 | 2023-05-21 04:00:55 | MASTER-SAAO | (20h 31m 46.36s , -88d 11m 55.2s) | C | 180 | 19.1 |\n 18950 | 2023-05-21 04:03:01 | MASTER-OAFA | (08h 00m 39.99s , -65d 21m 16.4s) | C | 180 | 13.1 |\n 19054 | 2023-05-21 04:04:46 | MASTER-OAFA | (06h 57m 49.16s , -69d 20m 53.3s) | C | 180 | 12.8 |\n 19269 | 2023-05-21 04:08:21 | MASTER-SAAO | (13h 33m 27.03s , -87d 51m 06.2s) | C | 180 | 18.5 |\n 19269 | 2023-05-21 04:08:21 | MASTER-SAAO | (13h 11m 45.32s , -87d 49m 15.4s) | C | 180 | 18.7 |\n 19484 | 2023-05-21 04:11:55 | MASTER-SAAO | (16h 51m 35.47s , -87d 58m 06.7s) | C | 180 | 19.0 |\n 19484 | 2023-05-21 04:11:55 | MASTER-SAAO | (17h 15m 05.15s , -88d 00m 36.4s) | C | 180 | 18.7 |\n 19567 | 2023-05-21 04:13:19 | MASTER-OAFA | (07h 04m 49.77s , -67d 25m 14.5s) | C | 180 | 12.6 |\n 19696 | 2023-05-21 04:15:28 | MASTER-SAAO | (14h 09m 58.72s , -85d 57m 09.4s) | C | 180 | 18.4 |\n 19696 | 2023-05-21 04:15:28 | MASTER-SAAO | (14h 21m 45.31s , -85d 59m 16.4s) | C | 180 | 18.3 |\n 19824 | 2023-05-21 04:17:36 | MASTER-OAFA | (07h 20m 52.23s , -66d 54m 31.8s) | C | 180 | 17.9 |\n 19907 | 2023-05-21 04:18:58 | MASTER-SAAO | (16h 05m 08.96s , -86d 01m 58.6s) | C | 180 | 18.0 |\n 19907 | 2023-05-21 04:18:58 | MASTER-SAAO | (16h 17m 16.81s , -86d 03m 26.9s) | C | 180 | 18.1 |\n 20125 | 2023-05-21 04:22:37 | MASTER-SAAO | (13h 12m 28.10s , -87d 48m 55.9s) | C | 180 | 17.8 |\n 20125 | 2023-05-21 04:22:37 | MASTER-SAAO | (13h 34m 10.00s , -87d 50m 49.4s) | C | 180 | 17.6 |\n 20338 | 2023-05-21 04:26:10 | MASTER-OAFA | (07h 29m 02.19s , -63d 08m 33.6s) | C | 180 | 17.5 |\n 20340 | 2023-05-21 04:26:11 | MASTER-SAAO | (16h 51m 32.25s , -87d 59m 28.2s) | C | 180 | 17.6 |\n 20340 | 2023-05-21 04:26:11 | MASTER-SAAO | (17h 15m 23.24s , -88d 01m 56.5s) | C | 180 | 17.6 |\n 20552 | 2023-05-21 04:29:44 | MASTER-SAAO | (14h 10m 31.01s , -85d 55m 17.0s) | C | 180 | 16.7 |\n 20552 | 2023-05-21 04:29:44 | MASTER-SAAO | (14h 22m 12.45s , -85d 57m 04.2s) | C | 180 | 16.6 |\n 20763 | 2023-05-21 04:33:15 | MASTER-SAAO | (16h 17m 23.05s , -86d 02m 04.2s) | C | 180 | 15.3 |\n 20763 | 2023-05-21 04:33:15 | MASTER-SAAO | (16h 05m 19.79s , -86d 00m 40.1s) | C | 180 | 15.6 |\n 20855 | 2023-05-21 04:34:46 | MASTER-OAFA | (07h 20m 48.38s , -66d 53m 19.6s) | C | 180 | 17.4 |\n 22402 | 2023-05-21 05:00:34 | MASTER-OAFA | (08h 02m 56.47s , -63d 05m 49.6s) | C | 180 | 15.1 |\n 23439 | 2023-05-21 05:17:50 | MASTER-OAFA | (08h 02m 46.63s , -63d 05m 01.7s) | C | 180 | 17.0 |\n 23954 | 2023-05-21 05:26:25 | MASTER-OAFA | (08h 01m 13.74s , -64d 59m 35.7s) | C | 180 | 17.4 |\n 24471 | 2023-05-21 05:35:03 | MASTER-OAFA | (07h 20m 44.64s , -59d 18m 00.1s) | C | 180 | 16.5 |\n 24988 | 2023-05-21 05:43:40 | MASTER-OAFA | (08h 01m 06.52s , -64d 59m 29.2s) | C | 180 | 17.0 |\n 25512 | 2023-05-21 05:52:24 | MASTER-OAFA | (07h 50m 55.10s , -59d 19m 04.5s) | C | 180 | 16.3 |\n 26033 | 2023-05-21 06:01:04 | MASTER-OAFA | (07h 47m 43.04s , -61d 12m 08.1s) | C | 180 | 16.7 |\n 26552 | 2023-05-21 06:09:43 | MASTER-OAFA | (08h 38m 58.79s , -66d 51m 08.0s) | C | 180 | 17.2 |\n 27069 | 2023-05-21 06:18:21 | MASTER-OAFA | (08h 37m 16.49s , -64d 56m 35.3s) | C | 180 | 17.0 |\n 27595 | 2023-05-21 06:27:06 | MASTER-OAFA | (08h 18m 04.88s , -66d 49m 32.4s) | C | 180 | 17.0 |\n 28861 | 2023-05-21 06:48:13 | MASTER-OAFA | (08h 18m 24.75s , -63d 02m 47.5s) | C | 180 | 17.0 |\n 63971 | 2023-05-21 16:33:22 | MASTER-SAAO | (08h 34m 41.70s , -04d 01m 25.6s) | C | 180 | 15.7 |\n 64151 | 2023-05-21 16:33:22 | MASTER-SAAO | (08h 34m 41.68s , -04d 01m 25.8s) | C | 540 | 17.2 | Coadd\n 63971 | 2023-05-21 16:33:22 | MASTER-SAAO | (08h 35m 30.89s , -04d 01m 36.8s) | B | 180 | 16.1 |\n 64151 | 2023-05-21 16:33:22 | MASTER-SAAO | (08h 35m 30.87s , -04d 01m 37.1s) | B | 540 | 18.9 | Coadd\n 64192 | 2023-05-21 16:37:04 | MASTER-SAAO | (08h 34m 48.85s , -04d 02m 17.6s) | C | 180 | 13.2 |\n 64192 | 2023-05-21 16:37:04 | MASTER-SAAO | (08h 35m 37.95s , -04d 02m 32.5s) | C | 180 | 13.0 |\n 64986 | 2023-05-21 16:50:18 | MASTER-SAAO | (08h 34m 41.76s , -04d 01m 49.6s) | C | 180 | 17.5 |\n 64986 | 2023-05-21 16:50:18 | MASTER-SAAO | (08h 35m 31.24s , -04d 02m 01.3s) | B | 180 | 17.7 |\n 65198 | 2023-05-21 16:53:49 | MASTER-SAAO | (08h 34m 42.58s , -04d 00m 40.3s) | C | 180 | 18.8 |\n 65198 | 2023-05-21 16:53:49 | MASTER-SAAO | (08h 35m 31.61s , -04d 00m 57.3s) | C | 180 | 18.8 |\n 74450 | 2023-05-21 19:28:01 | MASTER-SAAO | (08h 28m 46.76s , -74d 38m 09.2s) | C | 180 | 17.4 |\n 74450 | 2023-05-21 19:28:01 | MASTER-SAAO | (08h 25m 43.31s , -74d 38m 33.7s) | C | 180 | 17.4 |\n 74676 | 2023-05-21 19:31:47 | MASTER-SAAO | (08h 56m 12.94s , -74d 39m 45.9s) | C | 180 | 14.1 |\n 74676 | 2023-05-21 19:31:47 | MASTER-SAAO | (08h 59m 16.70s , -74d 39m 39.2s) | C | 180 | 14.1 |\n 75514 | 2023-05-21 19:45:46 | MASTER-SAAO | (08h 28m 46.23s , -74d 37m 22.5s) | C | 180 | 13.4 |\n 75514 | 2023-05-21 19:45:46 | MASTER-SAAO | (08h 25m 43.70s , -74d 37m 50.7s) | C | 180 | 13.5 |\n 75726 | 2023-05-21 19:49:18 | MASTER-SAAO | (08h 56m 12.16s , -74d 39m 10.2s) | C | 180 | 14.7 |\n 75726 | 2023-05-21 19:49:18 | MASTER-SAAO | (08h 59m 15.50s , -74d 38m 44.2s) | C | 180 | 14.7 |\n 76567 | 2023-05-21 20:03:18 | MASTER-SAAO | (08h 30m 24.20s , -76d 32m 12.0s) | C | 180 | 14.8 |\n 76567 | 2023-05-21 20:03:18 | MASTER-SAAO | (08h 33m 52.05s , -76d 31m 47.8s) | C | 180 | 14.5 |\n 76863 | 2023-05-21 20:08:15 | MASTER-SAAO | (09h 05m 03.30s , -76d 32m 33.5s) | C | 180 | 17.0 |\n 76863 | 2023-05-21 20:08:15 | MASTER-SAAO | (09h 08m 33.56s , -76d 32m 55.2s) | C | 180 | 17.0 |\n 77076 | 2023-05-21 20:11:48 | MASTER-SAAO | (08h 25m 21.20s , -72d 45m 47.4s) | C | 180 | 16.3 |\n 77076 | 2023-05-21 20:11:48 | MASTER-SAAO | (08h 22m 37.32s , -72d 44m 30.0s) | C | 180 | 15.9 |\n 77384 | 2023-05-21 20:16:55 | MASTER-SAAO | (08h 49m 39.44s , -72d 44m 56.2s) | C | 180 | 16.7 |\n 77384 | 2023-05-21 20:16:55 | MASTER-SAAO | (08h 52m 23.99s , -72d 45m 41.2s) | C | 180 | 16.9 |\n 77583 | 2023-05-21 20:20:15 | MASTER-SAAO | (08h 30m 28.71s , -76d 30m 54.0s) | C | 180 | 15.7 |\n 77583 | 2023-05-21 20:20:15 | MASTER-SAAO | (08h 33m 57.31s , -76d 31m 51.1s) | C | 180 | 16.2 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n",
"published": "2023-05-21T20:30:59.557984Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-05-21T20:30:59.558004Z",
"modified": "2023-05-21T20:30:59.565317Z",
"targets": []
},
{
"id": 26,
"topic": "gcn.circular",
"uuid": "a36312b9-3ca8-4ea9-a775-9f5469bff6e6",
"title": "LIGO/Virgo/KAGRA S230520ae: Identification of a GW compact binary merger candidate: End-to-End Test",
"submitter": "Hop gcn.circular",
"authors": "Tatsuya Narikawa at LVK <narikawa@icrr.u-tokyo.ac.jp>",
"data": {
"date": "23/05/21 02:17:57 GMT",
"from": "Tatsuya Narikawa at LVK <narikawa@icrr.u-tokyo.ac.jp>",
"title": "GCN CIRCULAR",
"number": "33838",
"subject": "LIGO/Virgo/KAGRA S230520ae: Identification of a GW compact binary merger candidate: End-to-End Test"
},
"message_text": "The LIGO Scientific Collaboration, the Virgo Collaboration, and the KAGRA Collaboration report:\n\nWe identified the compact binary merger candidate S230520ae during real-time processing of data from LIGO Hanford Observatory (H1) and LIGO Livingston Observatory (L1) at 2023-05-20 22:48:42.560 UTC (GPS time: 1368658140.560). The candidate was found by the MBTA [1], CWB [2], PyCBC Live [3], SPIIR [4], and GstLAL [5] analysis pipelines.\n\nS230520ae is an event of interest because its false alarm rate, as estimated by the online analysis, is 3.1e-09 Hz, or about one in 10 years. The event's properties can be found at this URL: https://gracedb.ligo.org/superevents/S230520ae\n\nThe classification of the GW signal, in order of descending probability, is BBH (>99%), Terrestrial (<1%), BNS (<1%), or NSBH (<1%).\n\nAssuming the candidate is astrophysical in origin, the probability that the lighter compact object has a mass < 3 solar masses (HasNS) is <1%. [6] Using the masses and spins inferred from the signal, the probability of matter outside the final compact object (HasRemnant) is <1%. [6]\n\nTwo sky maps are available at this time and can be retrieved from the GraceDB event page:\n * bayestar.multiorder.fits,0, an initial localization generated by BAYESTAR [7], distributed via GCN notice about 29 seconds after the candidate event time.\n * bayestar.multiorder.fits,1, an initial localization generated by BAYESTAR [7], distributed via GCN notice about 5 minutes after the candidate event time.\n\nThe preferred sky map at this time is bayestar.multiorder.fits,1. For the bayestar.multiorder.fits,1 sky map, the 90% credible region is 1716 deg2. Marginalized over the whole sky, the a posteriori luminosity distance estimate is 1974 +/- 583 Mpc (a posteriori mean +/- standard deviation).\n\nFor further information about analysis methodology and the contents of this alert, refer to the LIGO/Virgo/KAGRA Public Alerts User Guide <https://emfollow.docs.ligo.org/userguide/>.\n\n [1] Adams et al. CQG 33, 175012 (2016)\n [2] Klimenko et al. PRD 93, 042004 (2016)\n [3] Dal Canton et al. ApJ 923, 254 (2021)\n [4] Qi Chu, PhD Thesis, The University of Western Australia (2017)\n [5] Messick et al. PRD 95, 042001 (2017)\n [6] Chatterjee et al. The Astrophysical Journal 896, 1 (2020)\n [7] Singer & Price PRD 93, 024013 (2016)\n\n",
"published": "2023-05-21T02:18:06.405293Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-05-21T02:18:06.405326Z",
"modified": "2023-05-21T02:18:06.413541Z",
"targets": []
},
{
"id": 22,
"topic": "gcn.circular",
"uuid": "bd7eb048-94f1-4fe8-9127-40f530514b2b",
"title": "LIGO/Virgo/KAGRA S230520ae: Upper limits from IceCube neutrino search",
"submitter": "Hop gcn.circular",
"authors": "Jessie Thwaites at IceCube/U Wisc-Madison <thwaites@wisc.edu>",
"data": {
"date": "23/05/20 23:20:41 GMT",
"from": "Jessie Thwaites at IceCube/U Wisc-Madison <thwaites@wisc.edu>",
"title": "GCN CIRCULAR",
"number": "33835",
"subject": "LIGO/Virgo/KAGRA S230520ae: Upper limits from IceCube neutrino search"
},
"message_text": "IceCube Collaboration (http://icecube.wisc.edu/) reports:\n\nSearches for track-like muon neutrino events detected by IceCube consistent with the sky localization of gravitational-wave candidate S230520ae in a time range of 1000 seconds centered on the alert event time (2023-05-20 22:40:22.000 UTC to 2023-05-20 22:57:02.000 UTC) have been performed [1,2].\n\nDuring this time period IceCube was collecting good quality data. No significant track-like events are found in spatial coincidence of S230520ae calculated from the map circulated in the 2-Preliminary notice.\n\nIceCube's sensitivity assuming an E^-2 spectrum (E^2 dN/dE) to neutrino point sources within the locations spanned by the 90% spatial containment of S230520ae ranges from 0.028 to 1.133 GeV cm^-2 in a 1000 second time window.\n\nThe IceCube Neutrino Observatory is a cubic-kilometer neutrino detector operating at the geographic South Pole, Antarctica. The IceCube realtime alert point of contact can be reached at roc@icecube.wisc.edu.\n\n\n[1] M. G. Aartsen et al 2020 ApJL 898 L10\n[2] Abbasi et al. Astrophys.J. 944 (2023) 1, 80\n\n",
"published": "2023-05-20T23:20:50.559015Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-05-20T23:20:50.559035Z",
"modified": "2023-05-20T23:20:50.565203Z",
"targets": []
}
]
},
{
"event_id": "S230521k",
"sequences": [
{
"id": 4,
"sequence_number": 1,
"sequence_type": "PRELIMINARY",
"message": {
"id": 35,
"topic": "igwn.gwalert",
"uuid": "ae1dac7b-485c-4a3f-af54-ffa3bb6f3bfd",
"title": "S230521k - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230521k/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230521k/view/"
},
"event": {
"far": 2.420763166810502e-06,
"time": "2023-05-21T05:30:43.073Z",
"group": "CBC",
"search": "AllSky",
"area_50": 2.148591731740587,
"area_90": 2.148591731740587,
"duration": null,
"pipeline": "spiir",
"properties": {
"HasNS": 1.0,
"HasMassGap": 0.0,
"HasRemnant": 0.901158036832244
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "0362b41cc2e9bfe77735367d4301400c",
"classification": {
"BBH": 0.0,
"BNS": 0.25458286968202853,
"NSBH": 0.14372510765824797,
"Terrestrial": 0.6016920226597235
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-05-22T02:04:20Z",
"superevent_id": "S230521k",
"external_coinc": null
},
"message_text": "",
"published": "2023-05-22T02:04:22.253906Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-05-22T02:04:22.253931Z",
"modified": "2023-05-22T02:04:22.259773Z"
}
},
{
"id": 5,
"sequence_number": 2,
"sequence_type": "PRELIMINARY",
"message": {
"id": 36,
"topic": "igwn.gwalert",
"uuid": "8f4c470e-f48e-4d51-9540-441992bee157",
"title": "S230521k - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230521k/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230521k/view/"
},
"event": {
"far": 2.420763166810502e-06,
"time": "2023-05-21T05:30:43.073Z",
"group": "CBC",
"search": "AllSky",
"area_50": 2.148591731740587,
"area_90": 2.148591731740587,
"duration": null,
"pipeline": "spiir",
"properties": {
"HasNS": 1.0,
"HasMassGap": 0.0,
"HasRemnant": 0.901158036832244
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "0362b41cc2e9bfe77735367d4301400c",
"classification": {
"BBH": 0.0,
"BNS": 0.25458286968202853,
"NSBH": 0.14372510765824797,
"Terrestrial": 0.6016920226597235
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-05-22T02:08:54Z",
"superevent_id": "S230521k",
"external_coinc": null
},
"message_text": "",
"published": "2023-05-22T02:08:55.926078Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-05-22T02:08:55.926104Z",
"modified": "2023-05-22T02:08:55.930955Z"
}
}
],
"references": [
{
"id": 55,
"topic": "gcn.circular",
"uuid": "064ffa8a-5937-49a8-8234-743862227ba9",
"title": "LIGO/Virgo/KAGRA S230521k: MASTER new OT discovery",
"submitter": "Hop gcn.circular",
"authors": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"data": {
"date": "23/05/24 00:18:42 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "33861",
"subject": "LIGO/Virgo/KAGRA S230521k: MASTER new OT discovery"
},
"message_text": "V.Lipunov, Ya.Kechin (Lomonosov MSU), D.Buckley (SAAO),\nK.Zhirkov, A.Kuznetsov, P.Balanutsa, A.Chasovnikov, O.Gress, N.Tiurina,E.Gorbovskoy, G.Antipov, D.Vlasenko, V.Senik,\nV.Topolev, Yu.Tselik, Siyu Wu, V.Vladimirov, D.Cheryasov, D.Zimnukhov, T.Pogrosheva, V.Shumkov, K.Vetrov (Lomonosov Moscow State University, SAI,Physics Department),\nC.Francile, F. Podesta, C.Lopez, R. Podesta (Observatorio Astronomico Felix Aguilar OAFA),\nR. Rebolo, M. Serra (The Instituto de Astrofisica de Canarias),\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez,A.Corella,L.H.Rodriguez (INAOE, Guillermo Haro Astrophysics Observatory),\nN.M.Budnev, O.Ershova (ISU,API),\nA. Tlatov, D. Dormidontov (Kislovodsk Solar Station of the Pulkovo Observatory),\nA. Gabovich, V.Yurkov (Blagoveschensk Educational State University),\nM.Gulyaev, E.Minkina (Lomonosov MSU)\n\n\nMASTER OT J071612.28-415537.5 discovery\n\nDuring LVC S230521k https://gcn.gsfc.nasa.gov/notices_l/S230521k.lvc\ninspection survey (Lipunov et al. GCN 33849)\nMASTER-SAAO auto-detection system ( Lipunov et al., \"MASTER Global Robotic Net\", Advances in Astronomy, 2010, 30L )\n discovered OT source at (R.A.,Dec.2000) = 07h 16m 12.28s -41d 55m 37.5s on 2023-05-23.71558 UT.\n\nThe OT unfiltered magnitude is 18.2m (mlim\u0019.0).\n\nThe OT is seen in 4 images. There is no minor planet at this place.\n\nWe have reference images on 2021-02-16 02:18:16UT with mlim\u0019.5,\non 2014-12-24.97843 UT with unfiltered mlim\u0019.7m and other, there is no outbursts at automatic light curve, but analysis of archive images will be continued.\n\nSpectral observations and deep photometry are required.\nObservations and analysis will be continued.\n\n",
"published": "2023-05-24T00:18:51.609903Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-05-24T00:18:51.609925Z",
"modified": "2023-05-24T00:18:51.618181Z",
"targets": []
},
{
"id": 52,
"topic": "gcn.circular",
"uuid": "39d08af4-2993-4b01-806a-35629395e0c8",
"title": "LIGO/Virgo/KAGRA S230521k: Additional candidates from Zwicky Transient Facility",
"submitter": "Hop gcn.circular",
"authors": "Vishwajeet Swain at IIT Bombay <vishwajeet.s@iitb.ac.in>",
"data": {
"date": "23/05/23 20:38:13 GMT",
"from": "Vishwajeet Swain at IIT Bombay <vishwajeet.s@iitb.ac.in>",
"title": "GCN CIRCULAR",
"number": "33858",
"subject": "LIGO/Virgo/KAGRA S230521k: Additional candidates from Zwicky Transient Facility"
},
"message_text": "Vishwajeet Swain (IITB), Harsh Kumar (IITB), Viraj Karambelkar (CIT), Anirudh Salgundi (IITB), Akash Anumarlapudi (UWM), Robert Stein (CIT), Tomas Ahumada (CIT), Michael Coughlin (UMN), Mansi Kasliwal (CIT), Theophile du Laz (CIT), Eric Bellm (UW), Igor Andreoni (UMD) report on behalf of the ZTF collaboration:\n\nZwicky Transient Facility (ZTF; Graham et al., 2019; Bellm et al., 2019) continued to serendipitously cover the localization region of LVC trigger S230521k. In our previous GCN #33848 (T. Ahumada et al), we announced two candidates from observations on the first night. Continued observations cover 20.5% of the probability of the localization region at least twice.\n\nWe queried the ZTF alert stream using Kowalski (Duev et al. 2019) through Fritz (Coughlin et al. 2023) and emgwcave (Karambelkar et al. in prep), AMPEL (Nordin et al. 2019), and ZTFReST (Andreoni & Coughlin et al., 2021). We required at least 2 detections separated by at least 15 minutes to select against moving objects. Furthermore, we cross-match our candidates with the Minor Planet Center to flag known asteroids, reject stellar sources (Tachibana and Miller 2018), and apply machine learning algorithms (Mahabal et al. 2019). We require that no spatially coincident ZTF alerts were issued before the detection time of the LVC trigger.\n\nThe following sources passed our criteria and were inside the 95% error region:\n\n|-----------------------------------------------------------------------------------------------------\n| ZTF id | TNS name | ra | dec | mjd | mag±err (ab) | filter |\n|-----------------------------------------------------------------------------------------------------\n\nZTF23aalczjh | AT2023jfn | 202.39335 | 70.869591 | 60086.23392 | 20.25 ± 0.16 | g |\nZTF23aalczjc | --------- | 187.26158 | 70.850479 | 60086.19871 | 20.18 ± 0.23 | r |\nZTF23aakyfsk | AT2023jft | 180.89014 | 61.38805 | 60086.22718 | 20.40 ± 0.19 | g |\nZTF23aalcvpw | AT2023jfp | 173.47154 | 29.19382 | 60086.19722 | 20.36 ± 0.26 | r |\n\n|-----------------------------------------------------------------------------------------------------\n\nWe followed up ZTF23aalczjh, ZTF23aalczjc and ZTF23aakyfsk with 0.7m GROWTH-India Telescope and found that:\n\nZTF23aalczjh and ZTF23aakyfsk are not showing any significant evolution.\nZTF23aalczjc is blue (g-r = -0.22 ± 0.1 mag) and shows weak evidence of fading in r band (0.68 ± 0.55 mag/day), but g-band is consistent with no evolution.\n\nZTF and GROWTH are worldwide collaborations comprising Caltech, USA; IPAC, USA, WIS, Israel; OKC, Sweden; JSI/UMd, USA; U Washington, USA; DESY, Germany; MOST, Taiwan; UW Milwaukee, USA; LANL USA; Tokyo Tech, Japan; IITB, India; IIA, India; LJMU, UK; TTU, USA; SDSU, USA and USyd, Australia. ZTF acknowledges the generous support of the NSF under AST MSIP Grant No 1440341. GROWTH acknowledges generous support of the NSF under PIRE Grant No 1545949. Alert distribution service provided by DIRAC@UW (Patterson et al. 2019). Alert database searches are done by AMPEL (Nordin et al. 2019) and Kowalski (Duev et al. 2019). The GROWTH India Telescope (GIT; Kumar et al. 2022) is a 70-cm telescope with a 0.7-degree field of view, set up by the Indian Institute of Astrophysics (IIA) and the Indian Institute of Technology Bombay (IITB) with funding from DST-SERB and IUSSTF. It is located at the Indian Astronomical Observatory (Hanle), operated by IIA. We acknowledge funding by the IITB alumni batch of 1994, which partially supports operations of the telescope. Telescope technical details are available a https://sites.google.com/view/growthindia/.\n\n",
"published": "2023-05-23T20:38:25.865482Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-05-23T20:38:25.865501Z",
"modified": "2023-05-23T20:38:25.872973Z",
"targets": []
},
{
"id": 39,
"topic": "gcn.circular",
"uuid": "6c6815da-c3b5-4646-9b92-7a1651440d9d",
"title": "LIGO/Virgo S230521k: Global MASTER-Net observations report",
"submitter": "Hop gcn.circular",
"authors": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"data": {
"date": "23/05/22 06:24:36 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "33849",
"subject": "LIGO/Virgo S230521k: Global MASTER-Net observations report"
},
"message_text": "V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko,\nG.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin\n(Lomonosov Moscow State University, SAI, Physics Department),\n\nR. Podesta, C.Lopez, F. Podesta, C.Francile\n(Observatorio Astronomico Felix Aguilar OAFA),\n\nR. Rebolo, M. Serra\n(The Instituto de Astrofisica de Canarias),\n\nD. Buckley\n(South African Astronomical Observatory),\n\nO.A. Gres, N.M. Budnev\n(Irkutsk State University, API),\n\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez\n(INAOE, Guillermo Haro Astrophysics Observatory),\n\nA. Tlatov, D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nA. Gabovich, V.Yurkov\n(Blagoveschensk Educational State University)\n\n\nMASTER-Amur robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Russia (Blagoveshchensk State Pedagogical University) started inspect of the LIGO/Virgo S230521k errorbox 27825 sec after trigger time at 2023-05-21 13:14:28 UT, with upper limit up to 17.3 mag. Observations started at twilight. The observations began at zenith distance = 47 deg. The sun altitude is -14.0 deg.\n\nMASTER-SAAO robotic telescope located in South Africa (South African Astronomical Observatory) started inspect of the LIGO/Virgo S230521k errorbox 40364 sec after trigger time at 2023-05-21 16:43:27 UT, with upper limit up to 18.8 mag. Observations started at twilight. The observations began at zenith distance = 43 deg. The sun altitude is -12.2 deg.\n\nMASTER-OAFA robotic telescope located in Argentina (OAFA observatory of San Juan National University) started inspect of the LIGO/Virgo S230521k errorbox 62011 sec after trigger time at 2023-05-21 22:44:14 UT, with upper limit up to 17.6 mag. Observations started at twilight. The observations began at zenith distance = 22 deg. The sun altitude is -12.9 deg.\n\nThe galactic latitude b = -49 deg., longitude l = 208 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/ligo_1.php?id\u0011874\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 27856 | 2023-05-21 13:14:28 | MASTER-Amur | (05h 16m 51.62s , +79d 09m 34.2s) | C | 60 | 17.0 |\n 27948 | 2023-05-21 13:16:01 | MASTER-Amur | (05h 58m 39.99s , +79d 09m 12.5s) | C | 60 | 16.9 |\n 28226 | 2023-05-21 13:20:38 | MASTER-Amur | (05h 16m 51.13s , +79d 10m 54.0s) | C | 60 | 17.0 |\n 28318 | 2023-05-21 13:22:11 | MASTER-Amur | (05h 58m 42.66s , +79d 09m 35.7s) | C | 60 | 17.0 |\n 28596 | 2023-05-21 13:26:49 | MASTER-Amur | (05h 17m 00.94s , +79d 10m 40.8s) | C | 60 | 17.1 |\n 28689 | 2023-05-21 13:28:21 | MASTER-Amur | (05h 58m 50.00s , +79d 09m 27.3s) | C | 60 | 17.1 |\n 28782 | 2023-05-21 13:29:54 | MASTER-Amur | (03h 57m 11.24s , +79d 16m 57.1s) | C | 60 | 17.1 |\n 28874 | 2023-05-21 13:31:26 | MASTER-Amur | (04h 39m 13.24s , +79d 13m 50.0s) | C | 60 | 17.2 |\n 28966 | 2023-05-21 13:32:59 | MASTER-Amur | (04h 23m 33.68s , +73d 32m 50.4s) | C | 60 | 16.9 |\n 29059 | 2023-05-21 13:34:31 | MASTER-Amur | (04h 51m 21.32s , +73d 30m 10.9s) | C | 60 | 17.0 |\n 29152 | 2023-05-21 13:36:04 | MASTER-Amur | (03h 57m 11.88s , +79d 15m 51.5s) | C | 60 | 17.1 |\n 29244 | 2023-05-21 13:37:37 | MASTER-Amur | (04h 39m 21.54s , +79d 14m 59.3s) | C | 60 | 17.3 |\n 29337 | 2023-05-21 13:39:09 | MASTER-Amur | (04h 23m 31.37s , +73d 32m 22.5s) | C | 60 | 17.0 |\n 29429 | 2023-05-21 13:40:42 | MASTER-Amur | (04h 51m 29.46s , +73d 32m 16.9s) | C | 60 | 17.0 |\n 29614 | 2023-05-21 13:43:46 | MASTER-Amur | (04h 39m 21.10s , +79d 15m 35.2s) | C | 60 | 17.3 |\n 29706 | 2023-05-21 13:45:19 | MASTER-Amur | (04h 23m 36.18s , +73d 33m 35.9s) | C | 60 | 17.0 |\n 29799 | 2023-05-21 13:46:51 | MASTER-Amur | (04h 51m 25.07s , +73d 30m 56.3s) | C | 60 | 16.9 |\n 40149 | 2023-05-21 16:38:22 | MASTER-Amur | (02h 10m 05.21s , +37d 24m 21.1s) | C | 180 | 13.8 |\n 40454 | 2023-05-21 16:43:27 | MASTER-SAAO | (06h 48m 54.11s , -23d 27m 13.1s) | C | 180 | 16.9 |\n 40454 | 2023-05-21 16:43:27 | MASTER-SAAO | (06h 49m 48.06s , -23d 27m 33.7s) | C | 180 | 16.9 |\n 40666 | 2023-05-21 16:46:58 | MASTER-SAAO | (06h 57m 40.41s , -23d 25m 39.2s) | C | 180 | 17.9 |\n 40666 | 2023-05-21 16:46:58 | MASTER-SAAO | (06h 58m 34.32s , -23d 25m 59.9s) | C | 180 | 17.9 |\n 41459 | 2023-05-21 17:00:12 | MASTER-SAAO | (06h 48m 53.99s , -23d 26m 32.0s) | C | 180 | 18.6 |\n 41459 | 2023-05-21 17:00:12 | MASTER-SAAO | (06h 49m 47.04s , -23d 26m 55.3s) | C | 180 | 18.6 |\n 41659 | 2023-05-21 17:03:32 | MASTER-SAAO | (06h 57m 35.46s , -23d 25m 04.7s) | C | 180 | 17.9 |\n 41659 | 2023-05-21 17:03:32 | MASTER-SAAO | (06h 58m 28.60s , -23d 25m 28.6s) | C | 180 | 18.0 |\n 41870 | 2023-05-21 17:07:03 | MASTER-SAAO | (06h 26m 51.52s , -21d 30m 59.3s) | C | 180 | 15.9 |\n 41870 | 2023-05-21 17:07:03 | MASTER-SAAO | (06h 27m 43.67s , -21d 31m 23.1s) | C | 180 | 16.0 |\n 41889 | 2023-05-21 17:07:22 | MASTER-Amur | (02h 06m 58.70s , +35d 30m 02.6s) | C | 180 | 15.7 |\n 42082 | 2023-05-21 17:10:34 | MASTER-SAAO | (06h 35m 22.00s , -21d 31m 29.0s) | C | 180 | 16.3 |\n 42082 | 2023-05-21 17:10:34 | MASTER-SAAO | (06h 36m 14.42s , -21d 31m 51.9s) | C | 180 | 16.4 |\n 42102 | 2023-05-21 17:10:54 | MASTER-Amur | (02h 04m 11.90s , +33d 37m 56.1s) | C | 180 | 15.6 |\n 42293 | 2023-05-21 17:14:06 | MASTER-SAAO | (06h 22m 52.17s , -19d 37m 43.5s) | C | 180 | 14.8 |\n 42293 | 2023-05-21 17:14:06 | MASTER-SAAO | (06h 22m 00.55s , -19d 37m 20.1s) | C | 180 | 14.8 |\n 42315 | 2023-05-21 17:14:27 | MASTER-Amur | (01h 09m 27.15s , +33d 36m 33.2s) | C | 180 | 17.0 |\n 42505 | 2023-05-21 17:17:38 | MASTER-SAAO | (06h 30m 24.34s , -19d 38m 13.1s) | C | 180 | 16.1 |\n 42505 | 2023-05-21 17:17:38 | MASTER-SAAO | (06h 31m 16.05s , -19d 38m 35.3s) | C | 180 | 16.0 |\n 42527 | 2023-05-21 17:17:59 | MASTER-Amur | (01h 19m 00.90s , +33d 37m 40.4s) | C | 180 | 16.7 |\n 42716 | 2023-05-21 17:21:09 | MASTER-SAAO | (06h 26m 51.61s , -21d 31m 47.3s) | C | 180 | 18.0 |\n 42716 | 2023-05-21 17:21:09 | MASTER-SAAO | (06h 27m 43.67s , -21d 32m 10.0s) | C | 180 | 18.0 |\n 42927 | 2023-05-21 17:24:40 | MASTER-SAAO | (06h 35m 24.28s , -21d 30m 07.4s) | C | 180 | 18.8 |\n 42927 | 2023-05-21 17:24:40 | MASTER-SAAO | (06h 36m 16.24s , -21d 30m 30.7s) | C | 180 | 18.7 |\n 42993 | 2023-05-21 17:25:46 | MASTER-Amur | (02h 01m 42.41s , +31d 42m 14.7s) | C | 180 | 15.6 |\n 43139 | 2023-05-21 17:28:11 | MASTER-SAAO | (06h 21m 58.47s , -19d 37m 36.1s) | C | 180 | 17.8 |\n 43139 | 2023-05-21 17:28:11 | MASTER-SAAO | (06h 22m 49.47s , -19d 37m 59.6s) | C | 180 | 17.9 |\n 43206 | 2023-05-21 17:29:18 | MASTER-Amur | (01h 09m 26.22s , +33d 36m 20.9s) | C | 180 | 17.1 |\n 43351 | 2023-05-21 17:31:43 | MASTER-SAAO | (06h 30m 31.97s , -19d 35m 53.9s) | C | 180 | 18.0 |\n 43351 | 2023-05-21 17:31:43 | MASTER-SAAO | (06h 31m 22.88s , -19d 36m 17.9s) | C | 180 | 18.0 |\n 43562 | 2023-05-21 17:35:15 | MASTER-SAAO | (06h 17m 39.15s , -17d 41m 33.1s) | C | 180 | 17.2 |\n 43562 | 2023-05-21 17:35:15 | MASTER-SAAO | (06h 18m 28.85s , -17d 41m 55.5s) | C | 180 | 17.5 |\n 43774 | 2023-05-21 17:38:46 | MASTER-SAAO | (06h 26m 08.53s , -17d 42m 25.2s) | C | 180 | 18.3 |\n 43774 | 2023-05-21 17:38:46 | MASTER-SAAO | (06h 26m 58.19s , -17d 42m 47.2s) | C | 180 | 18.4 |\n 43985 | 2023-05-21 17:42:18 | MASTER-SAAO | (06h 33m 41.65s , -17d 43m 16.4s) | C | 180 | 18.3 |\n 43985 | 2023-05-21 17:42:18 | MASTER-SAAO | (06h 34m 31.33s , -17d 43m 38.4s) | C | 180 | 18.3 |\n 44197 | 2023-05-21 17:45:50 | MASTER-SAAO | (06h 38m 11.33s , -25d 18m 49.8s) | C | 180 | 18.7 |\n 44197 | 2023-05-21 17:45:50 | MASTER-SAAO | (06h 39m 03.83s , -25d 19m 12.2s) | C | 180 | 18.6 |\n 44408 | 2023-05-21 17:49:21 | MASTER-SAAO | (06h 42m 06.33s , -17d 41m 17.3s) | C | 180 | 18.6 |\n 44408 | 2023-05-21 17:49:21 | MASTER-SAAO | (06h 42m 55.91s , -17d 41m 40.2s) | C | 180 | 18.5 |\n 44620 | 2023-05-21 17:52:52 | MASTER-SAAO | (06h 17m 45.89s , -17d 42m 04.2s) | C | 180 | 15.9 |\n 44620 | 2023-05-21 17:52:52 | MASTER-SAAO | (06h 18m 35.18s , -17d 42m 24.6s) | C | 180 | 15.9 |\n 44786 | 2023-05-21 17:55:38 | MASTER-Amur | (01h 18m 55.53s , +33d 37m 43.3s) | C | 180 | 16.3 |\n 44831 | 2023-05-21 17:56:24 | MASTER-SAAO | (06h 47m 00.40s , -25d 17m 00.9s) | C | 180 | 17.5 |\n 44831 | 2023-05-21 17:56:24 | MASTER-SAAO | (06h 47m 53.06s , -25d 17m 19.3s) | C | 180 | 17.5 |\n 44998 | 2023-05-21 17:59:11 | MASTER-Amur | (02h 01m 40.50s , +31d 42m 16.9s) | C | 180 | 14.6 |\n 45043 | 2023-05-21 17:59:55 | MASTER-SAAO | (06h 26m 14.74s , -17d 41m 51.2s) | C | 180 | 16.4 |\n 45043 | 2023-05-21 17:59:55 | MASTER-SAAO | (06h 27m 04.14s , -17d 42m 09.5s) | C | 180 | 16.5 |\n 45254 | 2023-05-21 18:03:27 | MASTER-SAAO | (06h 33m 41.02s , -17d 42m 41.9s) | C | 180 | 17.5 |\n 45254 | 2023-05-21 18:03:27 | MASTER-SAAO | (06h 34m 30.36s , -17d 43m 00.0s) | C | 180 | 17.7 |\n 45424 | 2023-05-21 18:06:16 | MASTER-Amur | (00h 58m 28.35s , +29d 49m 36.4s) | C | 180 | 15.8 |\n 45466 | 2023-05-21 18:06:59 | MASTER-SAAO | (06h 38m 15.58s , -25d 18m 38.9s) | C | 180 | 18.4 |\n 45466 | 2023-05-21 18:06:59 | MASTER-SAAO | (06h 39m 07.70s , -25d 18m 57.2s) | C | 180 | 18.4 |\n 45678 | 2023-05-21 18:10:30 | MASTER-SAAO | (06h 42m 07.63s , -17d 40m 48.9s) | C | 180 | 16.4 |\n 45678 | 2023-05-21 18:10:30 | MASTER-SAAO | (06h 42m 56.97s , -17d 41m 07.6s) | C | 180 | 16.3 |\n 45890 | 2023-05-21 18:14:02 | MASTER-SAAO | (06h 47m 03.57s , -25d 18m 02.0s) | C | 180 | 12.9 |\n 45890 | 2023-05-21 18:14:02 | MASTER-SAAO | (06h 47m 56.19s , -25d 18m 19.7s) | C | 180 | 12.6 |\n 46101 | 2023-05-21 18:17:33 | MASTER-SAAO | (06h 38m 12.01s , -19d 35m 21.0s) | C | 180 | 15.5 |\n 46101 | 2023-05-21 18:17:33 | MASTER-SAAO | (06h 39m 02.34s , -19d 35m 37.4s) | C | 180 | 15.7 |\n 46312 | 2023-05-21 18:21:05 | MASTER-SAAO | (06h 46m 38.41s , -19d 34m 13.5s) | C | 180 | 16.5 |\n 46312 | 2023-05-21 18:21:05 | MASTER-SAAO | (06h 47m 28.72s , -19d 34m 29.8s) | C | 180 | 16.6 |\n 46524 | 2023-05-21 18:24:37 | MASTER-SAAO | (06h 29m 59.55s , -15d 48m 07.5s) | C | 180 | 14.1 |\n 46524 | 2023-05-21 18:24:37 | MASTER-SAAO | (06h 30m 48.27s , -15d 48m 23.0s) | C | 180 | 14.6 |\n 46735 | 2023-05-21 18:28:08 | MASTER-SAAO | (07h 00m 11.95s , -30d 58m 21.0s) | C | 180 | 15.3 |\n 46735 | 2023-05-21 18:28:08 | MASTER-SAAO | (07h 01m 07.76s , -30d 58m 35.3s) | C | 180 | 15.1 |\n 46946 | 2023-05-21 18:31:39 | MASTER-SAAO | (06h 39m 09.39s , -15d 47m 57.7s) | C | 180 | 12.9 |\n 47370 | 2023-05-21 18:38:43 | MASTER-SAAO | (07h 09m 30.09s , -30d 58m 51.6s) | C | 180 | 12.8 |\n 47370 | 2023-05-21 18:38:43 | MASTER-SAAO | (07h 10m 25.96s , -30d 59m 05.0s) | C | 180 | 12.7 |\n 47583 | 2023-05-21 18:42:15 | MASTER-SAAO | (06h 46m 48.88s , -19d 33m 36.9s) | C | 180 | 12.5 |\n 47583 | 2023-05-21 18:42:15 | MASTER-SAAO | (06h 47m 38.92s , -19d 33m 50.7s) | C | 180 | 12.7 |\n 48005 | 2023-05-21 18:49:18 | MASTER-SAAO | (07h 00m 09.31s , -30d 59m 36.1s) | C | 180 | 12.6 |\n 48005 | 2023-05-21 18:49:18 | MASTER-SAAO | (07h 01m 04.71s , -30d 59m 47.9s) | C | 180 | 12.5 |\n 49062 | 2023-05-21 19:06:54 | MASTER-SAAO | (06h 55m 17.36s , -25d 16m 02.4s) | C | 180 | 14.2 |\n 49062 | 2023-05-21 19:06:54 | MASTER-SAAO | (06h 56m 09.44s , -25d 16m 15.4s) | C | 180 | 14.5 |\n 49696 | 2023-05-21 19:17:28 | MASTER-SAAO | (06h 54m 04.28s , -27d 08m 59.0s) | C | 180 | 14.6 |\n 49696 | 2023-05-21 19:17:28 | MASTER-SAAO | (06h 54m 56.79s , -27d 09m 11.6s) | C | 180 | 15.0 |\n 49906 | 2023-05-21 19:20:59 | MASTER-SAAO | (06h 55m 21.35s , -25d 16m 21.8s) | C | 180 | 12.5 |\n 49906 | 2023-05-21 19:20:59 | MASTER-SAAO | (06h 56m 12.74s , -25d 16m 35.3s) | C | 180 | 14.0 |\n 50865 | 2023-05-21 19:36:58 | MASTER-SAAO | (07h 00m 22.45s , -34d 46m 05.4s) | C | 180 | 15.4 |\n 50865 | 2023-05-21 19:36:58 | MASTER-SAAO | (07h 01m 19.73s , -34d 46m 14.6s) | C | 180 | 15.6 |\n 51181 | 2023-05-21 19:42:13 | MASTER-SAAO | (07h 10m 03.83s , -34d 45m 12.5s) | C | 180 | 15.9 |\n 51181 | 2023-05-21 19:42:13 | MASTER-SAAO | (07h 11m 00.94s , -34d 45m 19.3s) | C | 180 | 16.0 |\n 51916 | 2023-05-21 19:54:28 | MASTER-SAAO | (07h 00m 31.27s , -34d 45m 43.8s) | C | 180 | 14.2 |\n 51916 | 2023-05-21 19:54:28 | MASTER-SAAO | (07h 01m 27.95s , -34d 45m 50.1s) | C | 180 | 14.4 |\n 52230 | 2023-05-21 19:59:43 | MASTER-SAAO | (07h 10m 11.06s , -34d 45m 33.0s) | C | 180 | 14.6 |\n 52230 | 2023-05-21 19:59:43 | MASTER-SAAO | (07h 11m 07.82s , -34d 45m 38.7s) | C | 180 | 14.7 |\n 62101 | 2023-05-21 22:44:14 | MASTER-OAFA | (08h 35m 34.70s , -43d 48m 12.2s) | C | 180 | 17.6 |\n 63185 | 2023-05-21 23:02:18 | MASTER-OAFA | (08h 35m 32.65s , -42d 30m 54.4s) | C | 180 | 17.3 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n",
"published": "2023-05-22T06:24:45.727879Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-05-22T06:24:45.727912Z",
"modified": "2023-05-22T06:24:45.735910Z",
"targets": []
},
{
"id": 38,
"topic": "gcn.circular",
"uuid": "254d95e8-0b06-46c2-8ec6-8e4de0aa4fc7",
"title": "# LIGO/Virgo/KAGRA S230521k: Zwicky Transient Facility observations",
"submitter": "Hop gcn.circular",
"authors": "Tomas Ahumada at U. of Maryland <tahumada@astro.umd.edu>",
"data": {
"date": "23/05/22 04:35:25 GMT",
"from": "Tomas Ahumada at U. of Maryland <tahumada@astro.umd.edu>",
"title": "GCN CIRCULAR",
"number": "33848",
"subject": "# LIGO/Virgo/KAGRA S230521k: Zwicky Transient Facility observations"
},
"message_text": "Tomas Ahumada (CIT), Viraj Karambelkar (CIT), Robert Stein (CIT), Gaurav\nWaratkar (IITB), Anirudh Salgundi (IITB), Theophile du Laz (CIT), Igor\nAndreoni (UMD), Michael Coughlin (UMN), Mansi Kasliwal (CIT), Varun\nBhalerao (IITB), Simeon Reusch (DESY), Jannis Necker (DESY), Shreya Anand\n(CIT), report on behalf of the ZTF and GROWTH collaborations:\n\n\nWe serendipitously observed the localization region of LVC trigger S230521k\nas part of routine Zwicky Transient Facility (ZTF; Graham et al., 2019;\nBellm et al., 2019) survey operations. We obtained a total of 100 images\ncovering g, r, and i bands for a total of 3810 seconds. These serendipitous\nobservations covered 1238.8 square degrees beginning at 2023-05-21T05:32:51\n(2 minutes after the burst trigger time) corresponding to ~9% of the\nprobability enclosed in the localization region.\n\nWe queried the ZTF alert stream using Kowalski (Duev et al. 2019) through\nFritz (Coughlin et al. 2023) and emgwcave (Karambelkar et al. in prep), and\nAMPEL (Nordin et al. 2019). We required at least 2 detections separated by\nat least 15 minutes to select against moving objects. Furthermore, we\ncross-match our candidates with the Minor Planet Center to flag known\nasteroids, reject stellar sources (Tachibana and Miller 2018), and apply\nmachine learning algorithms (Mahabal et al. 2019). We require that no\nspatially coincident ZTF alerts were issued before the detection time of\nthe LVC trigger.\n\nTwo sources passed our criteria and were inside the 95% error region:\n\n|-----------------------------------------------------------------------------------------------------\n| id | alias | ra | dec | mjd |\nmag±err (ab) | filter |\n|-----------------------------------------------------------------------------------------------------\n| ZTF23aaladzz | AT2023jcp | 275.9841 | 24.9580 | 60085.36780 |\n20.18±0.17 | r |\n| ZTF23aaladoy | AT2016bqh/AT 2023jbu | 280.1828 | 27.0236 | 60085.36780 |\n15.56±0.03 | g |\n|-----------------------------------------------------------------------------------------------------\n\n\nForced photometry at the location of AT2023jcp detections 4 days prior to\nthe GW event merger time. Thus, we rule out this source as a candidate\ncounterpart. A source 0.1 arcsec from ZTF23aaladoy was previously reported\nto TNS in 2016, thus we rule it out as a viable candidate.\n\nFurther follow-up of this localization region will continue as part of\nregular survey operations.\n\n\nZTF and GROWTH are worldwide collaborations comprising Caltech, USA; IPAC,\nUSA, WIS, Israel; OKC, Sweden; JSI/UMd, USA; U Washington, USA; DESY,\nGermany; MOST, Taiwan; UW Milwaukee, USA; LANL USA; Tokyo Tech, Japan;\nIITB, India; IIA, India; LJMU, UK; TTU, USA; SDSU, USA and USyd, Australia.\nZTF acknowledges the generous support of the NSF under AST MSIP Grant No\n1440341. GROWTH acknowledges generous support of the NSF under PIRE Grant\nNo 1545949. Alert distribution service provided by DIRAC@UW (Patterson et\nal. 2019). Alert database searches are done by AMPEL (Nordin et al. 2019)\nand Kowalski (Duev et al. 2019). GROWTH India telescope is located at the\nIndian Astronomical Observatory (Hanle), operated by the Indian Institute\nof Astrophysics (IIA). GROWTH-India project is supported by SERB and\nadministered by IUSSTF, under grant number IUSSTF/PIRE\nProgram/GROWTH/2015-16 and IUCAA.\n\n",
"published": "2023-05-22T04:35:33.463115Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-05-22T04:35:33.463138Z",
"modified": "2023-05-22T04:35:33.469802Z",
"targets": []
}
]
},
{
"event_id": "S230522a",
"sequences": [
{
"id": 6,
"sequence_number": 1,
"sequence_type": "PRELIMINARY",
"message": {
"id": 40,
"topic": "igwn.gwalert",
"uuid": "0d8fd2f2-504b-4f9a-b703-3e5ffbe8b2ba",
"title": "S230522a - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230522a/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230522a/view/"
},
"event": {
"far": 1.035085129180375e-08,
"time": "2023-05-22T09:38:05.135Z",
"group": "CBC",
"search": "AllSky",
"area_50": 4.297183463481174,
"area_90": 8.594366926962348,
"duration": null,
"pipeline": "gstlal",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.0007142857142857143,
"HasRemnant": 0.0
},
"instruments": [
"L1"
],
"significant": true,
"skymap_hash": "b22f244e148c80e7bc7edfca69fc5997",
"classification": {
"BBH": 0.9997260432019593,
"BNS": 7.410879833219319e-27,
"NSBH": 2.959607710013478e-25,
"Terrestrial": 0.0002739567980406532
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-05-22T09:38:34Z",
"superevent_id": "S230522a",
"external_coinc": null
},
"message_text": "",
"published": "2023-05-22T09:38:35.589384Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-05-22T09:38:35.589410Z",
"modified": "2023-05-22T09:38:35.595885Z"
}
},
{
"id": 7,
"sequence_number": 2,
"sequence_type": "PRELIMINARY",
"message": {
"id": 41,
"topic": "igwn.gwalert",
"uuid": "ade3ee1c-a9f8-45ec-937e-042aed4af316",
"title": "S230522a - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230522a/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230522a/view/"
},
"event": {
"far": 1.035085129180375e-08,
"time": "2023-05-22T09:38:05.135Z",
"group": "CBC",
"search": "AllSky",
"area_50": 4.297183463481174,
"area_90": 8.594366926962348,
"duration": null,
"pipeline": "gstlal",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.0007142857142857143,
"HasRemnant": 0.0
},
"instruments": [
"L1"
],
"significant": true,
"skymap_hash": "b22f244e148c80e7bc7edfca69fc5997",
"classification": {
"BBH": 0.9997260432019593,
"BNS": 7.410879833219319e-27,
"NSBH": 2.959607710013478e-25,
"Terrestrial": 0.0002739567980406532
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-05-22T09:43:09Z",
"superevent_id": "S230522a",
"external_coinc": null
},
"message_text": "",
"published": "2023-05-22T09:43:10.366530Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-05-22T09:43:10.366569Z",
"modified": "2023-05-22T09:43:10.371542Z"
}
}
],
"references": [
{
"id": 47,
"topic": "gcn.circular",
"uuid": "08c88e1c-bbb8-4b37-8164-0decaa9a6f8b",
"title": "LIGO/Virgo S230522a: Global MASTER-Net observations report",
"submitter": "Hop gcn.circular",
"authors": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"data": {
"date": "23/05/23 02:50:46 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "33853",
"subject": "LIGO/Virgo S230522a: Global MASTER-Net observations report"
},
"message_text": "V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko,\nG.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin\n(Lomonosov Moscow State University, SAI, Physics Department),\n\nR. Podesta, C.Lopez, F. Podesta, C.Francile\n(Observatorio Astronomico Felix Aguilar OAFA),\n\nR. Rebolo, M. Serra\n(The Instituto de Astrofisica de Canarias),\n\nD. Buckley\n(South African Astronomical Observatory),\n\nO.A. Gres, N.M. Budnev\n(Irkutsk State University, API),\n\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez\n(INAOE, Guillermo Haro Astrophysics Observatory),\n\nA. Tlatov, D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nA. Gabovich, V.Yurkov\n(Blagoveschensk Educational State University)\n\n\nMASTER-OAFA robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Argentina (OAFA observatory of San Juan National University) started inspect of the LIGO/Virgo S230522a errorbox 16 sec after notice time and 58 sec after trigger time at 2023-05-22 09:39:03 UT, with upper limit up to 17.3 mag. The observations began at zenith distance = 65 deg. The sun altitude is -21.1 deg.\n\nMASTER-Amur robotic telescope located in Russia (Blagoveshchensk State Pedagogical University) started inspect of the LIGO/Virgo S230522a errorbox 11003 sec after notice time and 11044 sec after trigger time at 2023-05-22 12:42:09 UT, with upper limit up to 18.3 mag. Observations started at twilight. The observations began at zenith distance = 58 deg. The sun altitude is -10.8 deg.\n\nThe galactic latitude b = 5 deg., longitude l = 65 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/ligo_1.php?id\u0011878\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 63 | 2023-05-22 09:39:03 | MASTER-OAFA | (19h 34m 48.88s , +30d 35m 13.5s) | C | 10 | 14.9 |\n 97 | 2023-05-22 09:39:32 | MASTER-OAFA | (19h 34m 55.42s , +30d 34m 12.8s) | C | 20 | 15.4 |\n 137 | 2023-05-22 09:40:12 | MASTER-OAFA | (19h 34m 49.64s , +30d 33m 11.4s) | C | 20 | 15.6 |\n 177 | 2023-05-22 09:40:12 | MASTER-OAFA | (19h 34m 49.64s , +30d 33m 11.6s) | C | 100 | 15.9 | Coadd\n 182 | 2023-05-22 09:40:51 | MASTER-OAFA | (19h 34m 56.49s , +30d 33m 17.5s) | C | 30 | 15.7 |\n 236 | 2023-05-22 09:41:41 | MASTER-OAFA | (19h 34m 52.51s , +30d 35m 03.1s) | C | 40 | 15.7 |\n 301 | 2023-05-22 09:42:40 | MASTER-OAFA | (19h 34m 52.47s , +30d 33m 32.0s) | C | 50 | 15.7 |\n 380 | 2023-05-22 09:43:49 | MASTER-OAFA | (19h 34m 55.75s , +30d 34m 56.6s) | C | 70 | 14.9 |\n 480 | 2023-05-22 09:45:19 | MASTER-OAFA | (19h 34m 50.29s , +30d 34m 01.5s) | C | 90 | 14.9 |\n 599 | 2023-05-22 09:47:09 | MASTER-OAFA | (19h 34m 49.49s , +30d 34m 57.5s) | C | 110 | 15.5 |\n 739 | 2023-05-22 09:49:19 | MASTER-OAFA | (19h 34m 55.24s , +30d 33m 52.2s) | C | 130 | 15.9 |\n 914 | 2023-05-22 09:51:48 | MASTER-OAFA | (18h 23m 08.96s , +24d 48m 15.6s) | C | 180 | 17.0 |\n 1113 | 2023-05-22 09:55:08 | MASTER-OAFA | (18h 23m 15.43s , +24d 48m 31.7s) | C | 180 | 17.0 |\n 1313 | 2023-05-22 09:58:27 | MASTER-OAFA | (18h 23m 12.21s , +24d 49m 34.8s) | C | 180 | 16.9 |\n 1513 | 2023-05-22 10:01:47 | MASTER-OAFA | (18h 23m 12.33s , +24d 48m 03.6s) | C | 180 | 17.2 |\n 1712 | 2023-05-22 10:05:06 | MASTER-OAFA | (18h 23m 14.90s , +24d 49m 35.1s) | C | 180 | 17.3 |\n 1912 | 2023-05-22 10:08:26 | MASTER-OAFA | (18h 23m 09.18s , +24d 48m 34.7s) | C | 180 | 17.3 |\n 2111 | 2023-05-22 10:11:45 | MASTER-OAFA | (18h 23m 10.28s , +24d 49m 27.3s) | C | 180 | 16.9 |\n 2310 | 2023-05-22 10:15:05 | MASTER-OAFA | (18h 23m 16.54s , +24d 48m 18.6s) | C | 180 | 16.9 |\n 2510 | 2023-05-22 10:18:24 | MASTER-OAFA | (18h 23m 09.79s , +24d 47m 10.3s) | C | 180 | 16.7 |\n 11074 | 2023-05-22 12:42:09 | MASTER-Amur | (13h 09m 08.87s , -07d 41m 16.2s) | C | 60 | 16.3 |\n 11167 | 2023-05-22 12:43:42 | MASTER-Amur | (13h 09m 15.69s , -07d 42m 26.4s) | C | 60 | 16.4 |\n 11260 | 2023-05-22 12:45:14 | MASTER-Amur | (13h 09m 09.88s , -07d 43m 33.6s) | C | 60 | 16.6 |\n 11412 | 2023-05-22 12:46:46 | MASTER-Amur | (18h 25m 35.96s , +25d 01m 34.0s) | C | 180 | 16.4 |\n 11624 | 2023-05-22 12:50:19 | MASTER-Amur | (18h 25m 34.01s , +25d 02m 58.8s) | C | 180 | 16.8 |\n 11837 | 2023-05-22 12:53:51 | MASTER-Amur | (18h 25m 33.94s , +25d 01m 03.8s) | C | 180 | 17.1 |\n 12049 | 2023-05-22 12:57:24 | MASTER-Amur | (18h 25m 36.44s , +25d 02m 12.0s) | C | 180 | 17.2 |\n 12262 | 2023-05-22 13:00:56 | MASTER-Amur | (18h 25m 31.18s , +25d 01m 33.9s) | C | 180 | 17.4 |\n 12474 | 2023-05-22 13:04:29 | MASTER-Amur | (18h 25m 30.07s , +25d 02m 25.9s) | C | 180 | 17.5 |\n 12693 | 2023-05-22 13:08:07 | MASTER-Amur | (18h 25m 35.67s , +25d 01m 18.8s) | C | 180 | 17.6 |\n 12905 | 2023-05-22 13:11:40 | MASTER-Amur | (18h 25m 29.62s , +25d 00m 10.4s) | C | 180 | 17.6 |\n 13117 | 2023-05-22 13:15:12 | MASTER-Amur | (18h 25m 35.03s , +25d 00m 08.1s) | C | 180 | 17.6 |\n 13330 | 2023-05-22 13:18:44 | MASTER-Amur | (18h 25m 31.65s , +25d 01m 49.3s) | C | 180 | 17.6 |\n 13542 | 2023-05-22 13:22:17 | MASTER-Amur | (18h 22m 51.71s , +31d 39m 51.4s) | C | 180 | 18.0 |\n 13755 | 2023-05-22 13:25:49 | MASTER-Amur | (18h 32m 09.42s , +31d 39m 08.5s) | C | 180 | 18.0 |\n 13967 | 2023-05-22 13:29:22 | MASTER-Amur | (18h 19m 03.49s , +29d 44m 31.9s) | C | 180 | 18.1 |\n 14180 | 2023-05-22 13:32:54 | MASTER-Amur | (18h 28m 09.75s , +29d 43m 48.1s) | C | 180 | 18.1 |\n 14393 | 2023-05-22 13:36:28 | MASTER-Amur | (18h 22m 50.32s , +31d 37m 47.1s) | C | 180 | 18.1 |\n 14606 | 2023-05-22 13:40:00 | MASTER-Amur | (18h 32m 10.82s , +31d 39m 34.8s) | C | 180 | 18.0 |\n 14818 | 2023-05-22 13:43:33 | MASTER-Amur | (18h 18m 58.78s , +29d 43m 07.8s) | C | 180 | 18.1 |\n 15031 | 2023-05-22 13:47:06 | MASTER-Amur | (18h 28m 15.27s , +29d 45m 02.1s) | C | 180 | 18.1 |\n 15244 | 2023-05-22 13:50:38 | MASTER-Amur | (18h 09m 37.48s , +33d 31m 56.8s) | C | 180 | 18.2 |\n 15456 | 2023-05-22 13:54:11 | MASTER-Amur | (18h 19m 20.25s , +33d 31m 16.7s) | C | 180 | 18.3 |\n 15669 | 2023-05-22 13:57:43 | MASTER-Amur | (18h 40m 40.87s , +31d 37m 21.9s) | C | 180 | 18.0 |\n 15887 | 2023-05-22 14:01:21 | MASTER-Amur | (18h 50m 01.44s , +31d 39m 08.5s) | C | 180 | 18.0 |\n 16100 | 2023-05-22 14:04:54 | MASTER-Amur | (18h 09m 39.47s , +33d 29m 32.4s) | C | 180 | 18.3 |\n 16312 | 2023-05-22 14:08:26 | MASTER-Amur | (18h 19m 17.66s , +33d 31m 21.9s) | C | 180 | 18.2 |\n 16524 | 2023-05-22 14:11:59 | MASTER-Amur | (18h 40m 31.51s , +31d 37m 30.9s) | C | 180 | 17.8 |\n 16737 | 2023-05-22 14:15:31 | MASTER-Amur | (18h 49m 56.01s , +31d 38m 47.6s) | C | 180 | 17.8 |\n 16949 | 2023-05-22 14:19:04 | MASTER-Amur | (18h 16m 25.56s , +27d 47m 03.6s) | C | 180 | 18.0 |\n 17162 | 2023-05-22 14:22:36 | MASTER-Amur | (18h 25m 34.86s , +27d 47m 51.1s) | C | 180 | 18.0 |\n 17383 | 2023-05-22 14:26:17 | MASTER-Amur | (18h 33m 40.05s , +27d 47m 56.1s) | C | 180 | 17.9 |\n 17595 | 2023-05-22 14:29:50 | MASTER-Amur | (18h 42m 46.37s , +27d 49m 28.7s) | C | 180 | 17.9 |\n 17832 | 2023-05-22 14:33:47 | MASTER-Amur | (18h 16m 23.33s , +27d 47m 18.8s) | C | 180 | 18.0 |\n 18045 | 2023-05-22 14:37:20 | MASTER-Amur | (18h 25m 27.48s , +27d 48m 37.1s) | C | 180 | 18.1 |\n 18183 | 2023-05-22 14:40:53 | MASTER-Amur | (18h 25m 27.64s , +24d 57m 04.9s) | C | 30 | 17.3 |\n 18246 | 2023-05-22 14:41:55 | MASTER-Amur | (18h 25m 23.01s , +24d 56m 01.1s) | C | 30 | 17.3 |\n 18308 | 2023-05-22 14:42:58 | MASTER-Amur | (18h 25m 27.60s , +24d 56m 06.9s) | C | 30 | 17.3 |\n 18371 | 2023-05-22 14:44:01 | MASTER-Amur | (18h 25m 25.64s , +24d 57m 39.0s) | C | 30 | 17.3 |\n 18434 | 2023-05-22 14:45:03 | MASTER-Amur | (18h 25m 25.75s , +24d 55m 54.3s) | C | 30 | 17.3 |\n 18497 | 2023-05-22 14:46:06 | MASTER-Amur | (18h 25m 27.37s , +24d 57m 45.3s) | C | 30 | 17.3 |\n 18560 | 2023-05-22 14:47:09 | MASTER-Amur | (18h 25m 22.72s , +24d 56m 42.4s) | C | 30 | 17.3 |\n 18623 | 2023-05-22 14:48:12 | MASTER-Amur | (18h 25m 22.61s , +24d 57m 37.5s) | C | 30 | 17.3 |\n 18685 | 2023-05-22 14:49:15 | MASTER-Amur | (18h 25m 28.45s , +24d 56m 34.0s) | C | 30 | 17.2 |\n 18748 | 2023-05-22 14:50:17 | MASTER-Amur | (18h 25m 22.74s , +24d 55m 29.7s) | C | 30 | 17.3 |\n 18811 | 2023-05-22 14:51:20 | MASTER-Amur | (18h 25m 29.50s , +24d 55m 37.9s) | C | 30 | 17.3 |\n 18873 | 2023-05-22 14:52:23 | MASTER-Amur | (18h 25m 25.40s , +24d 57m 07.9s) | C | 30 | 17.3 |\n 19011 | 2023-05-22 14:53:25 | MASTER-Amur | (18h 33m 38.51s , +27d 46m 07.8s) | C | 180 | 18.0 |\n 19224 | 2023-05-22 14:56:58 | MASTER-Amur | (18h 42m 44.76s , +27d 48m 19.8s) | C | 180 | 18.1 |\n 19436 | 2023-05-22 15:00:31 | MASTER-Amur | (18h 53m 51.50s , +29d 42m 44.4s) | C | 180 | 18.0 |\n 19649 | 2023-05-22 15:04:03 | MASTER-Amur | (19h 03m 10.65s , +29d 42m 05.9s) | C | 180 | 17.9 |\n 19861 | 2023-05-22 15:07:36 | MASTER-Amur | (18h 33m 00.18s , +22d 03m 52.7s) | C | 180 | 17.7 |\n 20074 | 2023-05-22 15:11:08 | MASTER-Amur | (18h 41m 34.88s , +22d 05m 40.7s) | C | 180 | 17.8 |\n 20286 | 2023-05-22 15:14:40 | MASTER-Amur | (18h 53m 54.46s , +29d 40m 12.3s) | C | 180 | 18.0 |\n 20498 | 2023-05-22 15:18:13 | MASTER-Amur | (19h 03m 09.35s , +29d 42m 06.9s) | C | 180 | 17.9 |\n 20735 | 2023-05-22 15:22:09 | MASTER-Amur | (18h 32m 53.36s , +22d 03m 43.5s) | C | 180 | 17.5 |\n 20947 | 2023-05-22 15:25:42 | MASTER-Amur | (18h 41m 31.56s , +22d 04m 59.5s) | C | 180 | 17.4 |\n 21160 | 2023-05-22 15:29:15 | MASTER-Amur | (18h 35m 05.87s , +20d 08m 27.5s) | C | 180 | 17.6 |\n 22132 | 2023-05-22 15:45:27 | MASTER-Amur | (18h 43m 36.01s , +20d 08m 05.3s) | C | 180 | 17.2 |\n 22344 | 2023-05-22 15:48:59 | MASTER-Amur | (18h 35m 09.40s , +20d 07m 41.9s) | C | 180 | 17.5 |\n 22769 | 2023-05-22 15:56:04 | MASTER-Amur | (18h 43m 34.40s , +20d 08m 24.9s) | C | 180 | 17.2 |\n 22982 | 2023-05-22 15:59:36 | MASTER-Amur | (16h 31m 50.40s , +45d 25m 20.0s) | C | 180 | 14.3 |\n 48017 | 2023-05-22 22:56:52 | MASTER-OAFA | (07h 18m 44.17s , -42d 36m 34.5s) | C | 180 | 12.6 |\n 48228 | 2023-05-22 23:00:23 | MASTER-OAFA | (07h 15m 28.04s , -40d 41m 57.3s) | C | 180 | 13.1 |\n 48803 | 2023-05-22 23:09:57 | MASTER-OAFA | (07h 06m 02.65s , -40d 42m 60.0s) | C | 180 | 13.0 |\n 49015 | 2023-05-22 23:13:29 | MASTER-OAFA | (07h 28m 37.57s , -42d 35m 27.3s) | C | 180 | 13.4 |\n 49785 | 2023-05-22 23:26:19 | MASTER-OAFA | (07h 28m 30.09s , -42d 37m 57.4s) | C | 180 | 12.3 |\n 50199 | 2023-05-22 23:33:14 | MASTER-OAFA | (06h 47m 20.76s , -42d 40m 59.3s) | C | 180 | 14.3 |\n 50411 | 2023-05-22 23:36:46 | MASTER-OAFA | (06h 58m 14.22s , -42d 38m 44.8s) | C | 180 | 13.7 |\n 50622 | 2023-05-22 23:40:17 | MASTER-OAFA | (07h 23m 04.98s , -38d 48m 52.6s) | C | 180 | 13.7 |\n 51404 | 2023-05-22 23:53:19 | MASTER-OAFA | (07h 23m 08.25s , -38d 49m 42.5s) | C | 180 | 12.8 |\n 51616 | 2023-05-22 23:56:50 | MASTER-OAFA | (07h 33m 22.49s , -38d 50m 42.4s) | C | 180 | 12.0 |\n 52038 | 2023-05-23 00:03:53 | MASTER-OAFA | (07h 46m 00.76s , -40d 42m 18.2s) | C | 180 | 12.1 |\n 53528 | 2023-05-23 00:28:42 | MASTER-OAFA | (06h 51m 18.26s , -36d 31m 33.9s) | C | 180 | 14.1 |\n 53950 | 2023-05-23 00:35:45 | MASTER-OAFA | (07h 47m 35.99s , -42d 08m 14.1s) | C | 180 | 12.9 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n",
"published": "2023-05-23T02:50:54.840211Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-05-23T02:50:54.840242Z",
"modified": "2023-05-23T02:50:54.848365Z",
"targets": []
},
{
"id": 42,
"topic": "gcn.circular",
"uuid": "fba05ccc-392a-4edd-aafb-78d9529ef9e2",
"title": "LIGO/Virgo/KAGRA S230522a: 2 counterpart neutrino candidates from IceCube neutrino searches",
"submitter": "Hop gcn.circular",
"authors": "Jessie Thwaites at IceCube/U Wisc-Madison <thwaites@wisc.edu>",
"data": {
"date": "23/05/22 12:26:35 GMT",
"from": "Jessie Thwaites at IceCube/U Wisc-Madison <thwaites@wisc.edu>",
"title": "GCN CIRCULAR",
"number": "33850",
"subject": "LIGO/Virgo/KAGRA S230522a: 2 counterpart neutrino candidates from IceCube neutrino searches"
},
"message_text": "IceCube Collaboration (http://icecube.wisc.edu/) reports:\n\nA search for track-like muon neutrino events detected by IceCube consistent with the sky localization of gravitational-wave candidate S230522a in a time range of 1000 seconds centered on the alert event time (2023-05-22 09:29:45.000 UTC to 2023-05-22 09:46:25.000 UTC) have been performed [1,2]. During this time period IceCube was collecting good quality data. The search is a maximum likelihood analysis which searches for a generic point-like neutrino source coincident with the given GW skymap.\n\n2 track-like event(s) are found in spatial and temporal coincidence with the gravitational-wave candidate S230522a calculated from the map circulated in the 2-Preliminary notice. This represents an overall p-value of 0.04 (1.8 sigma). These p-values measure the consistency of the observed track-like events with the known atmospheric backgrounds for this single map (not trials corrected for multiple GW events). The most probable multi-messenger source direction based on the neutrinos and GW skymap is RA 78.93, dec -37.54 degrees. The false alarm rate of these coincidences can be obtained by multiplying the p-values with their corresponding GW trigger rates.\n\nProperties of the coincident events are shown below.\n\n dt ra dec Angular Uncertainty(deg) p-value(generic transient) p-value(Bayesian)\n-----------------------------------------------------------------------------------------------------\n-152.13 78.98 -37.59 0.43 0.04 n/a\n73.08 127.79 -8.33 0.43 0.09 n/a\n\nwhere:\ndt = Time of track event minus time of GW trigger (sec)\nAngular uncertainty = Angular uncertainty of track event: the radius of a circle representing 90\\% CL containment by area.\np-value = the p-value for this specific track event from each search.\n\nThe IceCube Neutrino Observatory is a cubic-kilometer neutrino detector operating at the geographic South Pole, Antarctica. The IceCube realtime alert point of contact can be reached at roc@icecube.wisc.edu.\n\n[1] M. G. Aartsen et al 2020 ApJL 898 L10\n[2] Abbasi et al. Astrophys.J. 944 (2023) 1, 80\n\n",
"published": "2023-05-22T12:26:44.607744Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-05-22T12:26:44.607764Z",
"modified": "2023-05-22T12:26:44.614709Z",
"targets": []
}
]
},
{
"event_id": "S230522n",
"sequences": [
{
"id": 8,
"sequence_number": 1,
"sequence_type": "PRELIMINARY",
"message": {
"id": 43,
"topic": "igwn.gwalert",
"uuid": "47c98527-fea0-423d-b8c4-701022e061ed",
"title": "S230522n - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230522n/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230522n/view/"
},
"event": {
"far": 6.479128493829593e-09,
"time": "2023-05-22T15:30:33.391Z",
"group": "CBC",
"search": "AllSky",
"area_50": 4.297183463481174,
"area_90": 8.594366926962348,
"duration": null,
"pipeline": "gstlal",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.004106583072100313,
"HasRemnant": 0.0
},
"instruments": [
"L1"
],
"significant": true,
"skymap_hash": "f8bf2386b3d0238d7fe2bc90301b499b",
"classification": {
"BBH": 0.9931377623662752,
"BNS": 1.5857295164144167e-16,
"NSBH": 1.1696821003800253e-14,
"Terrestrial": 0.006862237633713075
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-05-22T15:31:02Z",
"superevent_id": "S230522n",
"external_coinc": null
},
"message_text": "",
"published": "2023-05-22T15:31:03.448231Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-05-22T15:31:03.448257Z",
"modified": "2023-05-22T15:31:03.455240Z"
}
},
{
"id": 9,
"sequence_number": 2,
"sequence_type": "PRELIMINARY",
"message": {
"id": 44,
"topic": "igwn.gwalert",
"uuid": "bf04c83e-6962-4767-9f99-3a19a8dcb460",
"title": "S230522n - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230522n/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230522n/view/"
},
"event": {
"far": 6.479128493829593e-09,
"time": "2023-05-22T15:30:33.391Z",
"group": "CBC",
"search": "AllSky",
"area_50": 4.297183463481174,
"area_90": 8.594366926962348,
"duration": null,
"pipeline": "gstlal",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.004106583072100313,
"HasRemnant": 0.0
},
"instruments": [
"L1"
],
"significant": true,
"skymap_hash": "f8bf2386b3d0238d7fe2bc90301b499b",
"classification": {
"BBH": 0.9931377623662752,
"BNS": 1.5857295164144167e-16,
"NSBH": 1.1696821003800253e-14,
"Terrestrial": 0.006862237633713075
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-05-22T15:35:37Z",
"superevent_id": "S230522n",
"external_coinc": null
},
"message_text": "",
"published": "2023-05-22T15:35:39.103610Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-05-22T15:35:39.103636Z",
"modified": "2023-05-22T15:35:39.108674Z"
}
}
],
"references": [
{
"id": 48,
"topic": "gcn.circular",
"uuid": "218c9611-f838-4ad6-8175-ae6e924994d2",
"title": "LIGO/Virgo S230522n: Global MASTER-Net observations report",
"submitter": "Hop gcn.circular",
"authors": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"data": {
"date": "23/05/23 02:50:51 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "33854",
"subject": "LIGO/Virgo S230522n: Global MASTER-Net observations report"
},
"message_text": "V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko,\nG.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin\n(Lomonosov Moscow State University, SAI, Physics Department),\n\nR. Podesta, C.Lopez, F. Podesta, C.Francile\n(Observatorio Astronomico Felix Aguilar OAFA),\n\nR. Rebolo, M. Serra\n(The Instituto de Astrofisica de Canarias),\n\nD. Buckley\n(South African Astronomical Observatory),\n\nO.A. Gres, N.M. Budnev\n(Irkutsk State University, API),\n\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez\n(INAOE, Guillermo Haro Astrophysics Observatory),\n\nA. Tlatov, D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nA. Gabovich, V.Yurkov\n(Blagoveschensk Educational State University)\n\n\nMASTER-Amur robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Russia (Blagoveshchensk State Pedagogical University) started inspect of the LIGO/Virgo S230522n errorbox 1687 sec after notice time and 1743 sec after trigger time at 2023-05-22 15:59:36 UT, with upper limit up to 14.3 mag. The observations began at zenith distance = 5 deg. The sun altitude is -19.3 deg.\n\nMASTER-OAFA robotic telescope located in Argentina (OAFA observatory of San Juan National University) started inspect of the LIGO/Virgo S230522n errorbox 32656 sec after notice time and 32712 sec after trigger time at 2023-05-23 00:35:45 UT, with upper limit up to 12.9 mag. The observations began at zenith distance = 51 deg. The sun altitude is -36.5 deg.\n\nThe galactic latitude b = 32 deg., longitude l = 313 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/ligo_1.php?id\u0011882\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 1834 | 2023-05-22 15:59:36 | MASTER-Amur | (16h 31m 50.40s , +45d 25m 20.0s) | C | 180 | 14.3 |\n 32802 | 2023-05-23 00:35:45 | MASTER-OAFA | (07h 47m 35.99s , -42d 08m 14.1s) | C | 180 | 12.9 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n",
"published": "2023-05-23T02:50:59.876896Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-05-23T02:50:59.876937Z",
"modified": "2023-05-23T02:50:59.885172Z",
"targets": []
},
{
"id": 46,
"topic": "gcn.circular",
"uuid": "42d09907-3199-422a-9e26-ffe0f11102a4",
"title": "LIGO/Virgo/KAGRA S230522n: Upper limits from IceCube neutrino search",
"submitter": "Hop gcn.circular",
"authors": "Jessie Thwaites at IceCube/U Wisc-Madison <thwaites@wisc.edu>",
"data": {
"date": "23/05/22 16:25:52 GMT",
"from": "Jessie Thwaites at IceCube/U Wisc-Madison <thwaites@wisc.edu>",
"title": "GCN CIRCULAR",
"number": "33852",
"subject": "LIGO/Virgo/KAGRA S230522n: Upper limits from IceCube neutrino search"
},
"message_text": "IceCube Collaboration (http://icecube.wisc.edu/) reports:\n\nA search for track-like muon neutrino events detected by IceCube consistent with the sky localization of gravitational-wave candidate S230522n in a time range of 1000 seconds centered on the alert event time (2023-05-22 15:22:13.000 UTC to 2023-05-22 15:38:53.000 UTC) has been performed [1,2].\n\nDuring this time period IceCube was collecting good quality data. No significant track-like events are found in spatial coincidence of S230522n calculated from the map circulated in the 2-Preliminary notice.\n\nIceCube's sensitivity assuming an E^-2 spectrum (E^2 dN/dE) to neutrino point sources within the locations spanned by the 90% spatial containment of S230522n ranges from 0.028 to 1.133 GeV cm^-2 in a 1000 second time window.\n\nThe IceCube Neutrino Observatory is a cubic-kilometer neutrino detector operating at the geographic South Pole, Antarctica. The IceCube realtime alert point of contact can be reached at roc@icecube.wisc.edu.\n\n[1] M. G. Aartsen et al 2020 ApJL 898 L10\n[2] Abbasi et al. Astrophys.J. 944 (2023) 1, 80\n\n",
"published": "2023-05-22T16:26:01.252743Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-05-22T16:26:01.252763Z",
"modified": "2023-05-22T16:26:01.260226Z",
"targets": []
}
]
},
{
"event_id": "S230524b",
"sequences": [
{
"id": 10,
"sequence_number": 1,
"sequence_type": "PRELIMINARY",
"message": {
"id": 57,
"topic": "igwn.gwalert",
"uuid": "ab4da81d-2c57-402c-a4c6-d80db0bc6cee",
"title": "S230524b - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230524b/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230524b/view/"
},
"event": {
"far": 8.255390964696515e-07,
"time": "2023-05-24T06:13:20.164Z",
"group": "CBC",
"search": "AllSky",
"area_50": 4.297183463481174,
"area_90": 8.594366926962348,
"duration": null,
"pipeline": "gstlal",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.004106583072100313,
"HasRemnant": 0.0
},
"instruments": [
"L1"
],
"significant": false,
"skymap_hash": "41cd28ab9142e8fa23e69485187c1bfc",
"classification": {
"BBH": 0.7253091003042722,
"BNS": 2.810813685108556e-17,
"NSBH": 1.9584073026886177e-15,
"Terrestrial": 0.2746908996957258
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-05-24T06:13:45Z",
"superevent_id": "S230524b",
"external_coinc": null
},
"message_text": "",
"published": "2023-05-24T06:13:46.403549Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-05-24T06:13:46.403576Z",
"modified": "2023-05-24T06:13:46.410292Z"
}
},
{
"id": 11,
"sequence_number": 2,
"sequence_type": "PRELIMINARY",
"message": {
"id": 60,
"topic": "igwn.gwalert",
"uuid": "0eabdf20-0a29-4aeb-9f55-cea214f6a3ef",
"title": "S230524b - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230524b/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230524b/view/"
},
"event": {
"far": 8.255390964696515e-07,
"time": "2023-05-24T06:13:20.164Z",
"group": "CBC",
"search": "AllSky",
"area_50": 4.297183463481174,
"area_90": 8.594366926962348,
"duration": null,
"pipeline": "gstlal",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.004106583072100313,
"HasRemnant": 0.0
},
"instruments": [
"L1"
],
"significant": false,
"skymap_hash": "41cd28ab9142e8fa23e69485187c1bfc",
"classification": {
"BBH": 0.7253091003042722,
"BNS": 2.810813685108556e-17,
"NSBH": 1.9584073026886177e-15,
"Terrestrial": 0.2746908996957258
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-05-24T06:18:19Z",
"superevent_id": "S230524b",
"external_coinc": null
},
"message_text": "",
"published": "2023-05-24T06:18:20.182851Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-05-24T06:18:20.182892Z",
"modified": "2023-05-24T06:18:20.188210Z"
}
}
],
"references": [
{
"id": 61,
"topic": "gcn.circular",
"uuid": "b2796616-94d8-4d95-a996-dcb459f49a6f",
"title": "LIGO/Virgo S230524b: Global MASTER-Net observations report",
"submitter": "Hop gcn.circular",
"authors": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"data": {
"date": "23/05/24 06:24:26 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "33865",
"subject": "LIGO/Virgo S230524b: Global MASTER-Net observations report"
},
"message_text": "V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko,\nG.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin\n(Lomonosov Moscow State University, SAI, Physics Department),\n\nR. Podesta, C.Lopez, F. Podesta, C.Francile\n(Observatorio Astronomico Felix Aguilar OAFA),\n\nR. Rebolo, M. Serra\n(The Instituto de Astrofisica de Canarias),\n\nD. Buckley\n(South African Astronomical Observatory),\n\nO.A. Gres, N.M. Budnev\n(Irkutsk State University, API),\n\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez\n(INAOE, Guillermo Haro Astrophysics Observatory),\n\nA. Tlatov, D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nA. Gabovich, V.Yurkov\n(Blagoveschensk Educational State University)\n\n\nMASTER-OAFA robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Argentina (OAFA observatory of San Juan National University) started inspect of the LIGO/Virgo S230524b errorbox 60 sec after notice time and 95 sec after trigger time at 2023-05-24 06:14:55 UT, with upper limit up to 18.3 mag. The observations began at zenith distance = 66 deg. The sun altitude is -64.6 deg.\n\nThe galactic latitude b = 44 deg., longitude l = 50 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/ligo_1.php?id\u0011887\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 106 | 2023-05-24 06:14:55 | MASTER-OAFA | (16h 16m 46.14s , +31d 07m 13.6s) | C | 20 | 17.5 |\n 150 | 2023-05-24 06:15:35 | MASTER-OAFA | (16h 16m 39.33s , +31d 06m 12.3s) | C | 30 | 17.7 |\n 205 | 2023-05-24 06:16:24 | MASTER-OAFA | (16h 16m 46.20s , +31d 06m 32.0s) | C | 40 | 17.9 |\n 269 | 2023-05-24 06:17:24 | MASTER-OAFA | (16h 16m 42.25s , +31d 07m 41.7s) | C | 50 | 18.1 |\n 344 | 2023-05-24 06:18:33 | MASTER-OAFA | (16h 16m 42.25s , +31d 06m 08.2s) | C | 60 | 18.3 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n",
"published": "2023-05-24T06:24:34.751153Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-05-24T06:24:34.751186Z",
"modified": "2023-05-24T06:24:34.756217Z",
"targets": []
}
]
},
{
"event_id": "S230524x",
"sequences": [
{
"id": 12,
"sequence_number": 1,
"sequence_type": "EARLY_WARNING",
"message": {
"id": 68,
"topic": "igwn.gwalert",
"uuid": "94865149-f604-45f4-94ce-35eadd7d701d",
"title": "S230524x - EARLYWARNING",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230524x/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230524x/view/"
},
"event": {
"far": 7.224443905955801e-08,
"time": "2023-05-24T20:22:41.837Z",
"group": "CBC",
"search": "EarlyWarning",
"area_50": 2.148591731740587,
"area_90": 2.148591731740587,
"duration": null,
"pipeline": "pycbc",
"properties": {
"HasNS": 1.0,
"HasMassGap": 0.0,
"HasRemnant": 1.0
},
"instruments": [
"H1",
"L1"
],
"significant": true,
"skymap_hash": "b092bb8f547568afcec90a248bcd943d",
"classification": {
"BBH": 0.0,
"BNS": 0.7540149362918832,
"NSBH": 0.0,
"Terrestrial": 0.24598506370811693
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "EARLYWARNING",
"sequence_num": 1,
"time_created": "2023-05-24T20:22:33Z",
"superevent_id": "S230524x",
"external_coinc": null
},
"message_text": "",
"published": "2023-05-24T20:22:33.931700Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-05-24T20:22:33.931738Z",
"modified": "2023-05-24T20:22:33.940977Z"
}
},
{
"id": 13,
"sequence_number": 2,
"sequence_type": "RETRACTION",
"message": {
"id": 69,
"topic": "igwn.gwalert",
"uuid": "6169e96b-dbf8-48ef-be52-faaf7e2b0772",
"title": "S230524x - RETRACTION",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"gracedb": "https://gracedb.ligo.org/superevents/S230524x/view/"
},
"event": null,
"alert_type": "RETRACTION",
"sequence_num": 2,
"time_created": "2023-05-24T20:37:50Z",
"superevent_id": "S230524x",
"external_coinc": null
},
"message_text": "",
"published": "2023-05-24T20:37:50.911876Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-05-24T20:37:50.911900Z",
"modified": "2023-05-24T20:37:50.916824Z"
}
}
],
"references": [
{
"id": 70,
"topic": "gcn.circular",
"uuid": "02a0bb93-8f9b-473a-a915-974c0595d78a",
"title": "LIGO/Virgo/KAGRA S230524x: Retraction of GW compact binary merger candidate",
"submitter": "Hop gcn.circular",
"authors": "J. L. Wright at Australian National University <jennifer.wright@anu.edu.au>",
"data": {
"date": "23/05/24 20:50:40 GMT",
"from": "J. L. Wright at Australian National University <jennifer.wright@anu.edu.au>",
"title": "GCN CIRCULAR",
"number": "33871",
"subject": "LIGO/Virgo/KAGRA S230524x: Retraction of GW compact binary merger candidate"
},
"message_text": "The LIGO Scientific Collaboration, the Virgo Collaboration, and the KAGRA Collaboration report:\n\nThe trigger S230524x is no longer considered to be a candidate of interest. This candidate included at least one detection prior to the merger time but no significant detections that included the merger, which indicates this candidate is likely a noise transient.\n\n",
"published": "2023-05-24T20:50:52.802408Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-05-24T20:50:52.802427Z",
"modified": "2023-05-24T20:50:52.807077Z",
"targets": []
}
]
},
{
"event_id": "S230525a",
"sequences": [
{
"id": 14,
"sequence_number": 1,
"sequence_type": "PRELIMINARY",
"message": {
"id": 71,
"topic": "igwn.gwalert",
"uuid": "53d075db-cc2b-4a56-93a4-92272f61171f",
"title": "S230525a - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230525a/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230525a/view/"
},
"event": {
"far": 7.513615903997673e-07,
"time": "2023-05-25T02:38:17.863Z",
"group": "CBC",
"search": "AllSky",
"area_50": 4.297183463481174,
"area_90": 8.594366926962348,
"duration": null,
"pipeline": "gstlal",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.008222222222222221,
"HasRemnant": 0.0
},
"instruments": [
"L1"
],
"significant": false,
"skymap_hash": "8e52a21d04aa9a9df24fc1c0bb9bbfce",
"classification": {
"BBH": 0.723511627022613,
"BNS": 3.7233203006183304e-25,
"NSBH": 2.5129811825348016e-23,
"Terrestrial": 0.27648837297738704
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-05-25T02:38:56Z",
"superevent_id": "S230525a",
"external_coinc": null
},
"message_text": "",
"published": "2023-05-25T02:38:57.761574Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-05-25T02:38:57.761599Z",
"modified": "2023-05-25T02:38:57.767152Z"
}
},
{
"id": 15,
"sequence_number": 2,
"sequence_type": "PRELIMINARY",
"message": {
"id": 72,
"topic": "igwn.gwalert",
"uuid": "d37af35b-7220-4689-b521-45230171ebd1",
"title": "S230525a - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230525a/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230525a/view/"
},
"event": {
"far": 7.513615903997673e-07,
"time": "2023-05-25T02:38:17.863Z",
"group": "CBC",
"search": "AllSky",
"area_50": 4.297183463481174,
"area_90": 8.594366926962348,
"duration": null,
"pipeline": "gstlal",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.008222222222222221,
"HasRemnant": 0.0
},
"instruments": [
"L1"
],
"significant": false,
"skymap_hash": "8e52a21d04aa9a9df24fc1c0bb9bbfce",
"classification": {
"BBH": 0.723511627022613,
"BNS": 3.7233203006183304e-25,
"NSBH": 2.5129811825348016e-23,
"Terrestrial": 0.27648837297738704
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-05-25T02:43:31Z",
"superevent_id": "S230525a",
"external_coinc": null
},
"message_text": "",
"published": "2023-05-25T02:43:32.442209Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-05-25T02:43:32.442242Z",
"modified": "2023-05-25T02:43:32.447105Z"
}
}
],
"references": [
{
"id": 87,
"topic": "gcn.circular",
"uuid": "3aebc7b2-ab71-46b7-b1b9-6a14ca20521b",
"title": "LIGO/Virgo S230525a: Global MASTER-Net observations report",
"submitter": "Hop gcn.circular",
"authors": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"data": {
"date": "23/05/27 15:28:22 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "33885",
"subject": "LIGO/Virgo S230525a: Global MASTER-Net observations report"
},
"message_text": "V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko,\nG.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin\n(Lomonosov Moscow State University, SAI, Physics Department),\n\nR. Podesta, C.Lopez, F. Podesta, C.Francile\n(Observatorio Astronomico Felix Aguilar OAFA),\n\nR. Rebolo, M. Serra\n(The Instituto de Astrofisica de Canarias),\n\nD. Buckley\n(South African Astronomical Observatory),\n\nO.A. Gres, N.M. Budnev\n(Irkutsk State University, API),\n\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez\n(INAOE, Guillermo Haro Astrophysics Observatory),\n\nA. Tlatov, D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nA. Gabovich, V.Yurkov\n(Blagoveschensk Educational State University)\n\n\nMASTER-SAAO robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in South Africa (South African Astronomical Observatory) started inspect of the LIGO/Virgo S230525a errorbox 163 sec after notice time and 220 sec after trigger time at 2023-05-25 02:41:57 UT, with upper limit up to 20.2 mag. The observations began at zenith distance = 57 deg. The sun altitude is -34.4 deg.\n\nMASTER-OAFA robotic telescope located in Argentina (OAFA observatory of San Juan National University) started inspect of the LIGO/Virgo S230525a errorbox 1383 sec after notice time and 1440 sec after trigger time at 2023-05-25 03:02:17 UT, with upper limit up to 19.9 mag. The observations began at zenith distance = 59 deg. The sun altitude is -67.6 deg.\n\nThe galactic latitude b = -87 deg., longitude l = 318 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/ligo_1.php?id\u0011898\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 241 | 2023-05-25 02:41:57 | MASTER-SAAO | (00h 43m 52.46s , -30d 57m 22.2s) | C | 40 | 18.9 |\n 301 | 2023-05-25 02:41:57 | MASTER-SAAO | (00h 43m 52.51s , -30d 57m 22.1s) | C | 160 | 19.7 | Coadd\n 241 | 2023-05-25 02:41:57 | MASTER-SAAO | (00h 42m 56.31s , -30d 57m 42.5s) | C | 40 | 18.9 |\n 301 | 2023-05-25 02:41:57 | MASTER-SAAO | (00h 42m 56.35s , -30d 57m 42.5s) | C | 160 | 19.7 | Coadd\n 305 | 2023-05-25 02:42:56 | MASTER-SAAO | (00h 43m 49.73s , -30d 55m 53.7s) | C | 50 | 19.0 |\n 305 | 2023-05-25 02:42:56 | MASTER-SAAO | (00h 42m 53.62s , -30d 56m 14.4s) | C | 50 | 18.9 |\n 384 | 2023-05-25 02:44:06 | MASTER-SAAO | (00h 42m 53.71s , -30d 57m 44.2s) | C | 70 | 18.8 |\n 384 | 2023-05-25 02:44:06 | MASTER-SAAO | (00h 43m 49.85s , -30d 57m 23.5s) | C | 70 | 18.9 |\n 494 | 2023-05-25 02:45:46 | MASTER-SAAO | (00h 42m 55.50s , -30d 55m 52.9s) | C | 90 | 19.4 |\n 494 | 2023-05-25 02:45:46 | MASTER-SAAO | (00h 43m 51.61s , -30d 55m 31.0s) | C | 90 | 19.5 |\n 619 | 2023-05-25 02:45:46 | MASTER-SAAO | (00h 43m 51.61s , -30d 55m 30.9s) | C | 340 | 20.2 | Coadd\n 619 | 2023-05-25 02:45:46 | MASTER-SAAO | (00h 42m 55.50s , -30d 55m 52.9s) | C | 340 | 20.0 | Coadd\n 624 | 2023-05-25 02:47:46 | MASTER-SAAO | (00h 42m 50.68s , -30d 56m 48.7s) | C | 110 | 19.5 |\n 624 | 2023-05-25 02:47:46 | MASTER-SAAO | (00h 43m 46.82s , -30d 56m 27.0s) | C | 110 | 19.6 |\n 769 | 2023-05-25 02:49:55 | MASTER-SAAO | (00h 43m 45.72s , -30d 55m 26.6s) | C | 140 | 19.6 |\n 769 | 2023-05-25 02:49:55 | MASTER-SAAO | (00h 42m 49.54s , -30d 55m 49.5s) | C | 140 | 19.6 |\n 990 | 2023-05-25 02:53:17 | MASTER-SAAO | (17h 31m 36.89s , +18d 18m 59.8s) | C | 180 | 18.2 |\n 990 | 2023-05-25 02:53:17 | MASTER-SAAO | (17h 32m 30.08s , +18d 20m 39.0s) | C | 180 | 18.5 |\n 1204 | 2023-05-25 02:56:50 | MASTER-SAAO | (17h 39m 56.49s , +18d 17m 39.9s) | C | 180 | 18.2 |\n 1204 | 2023-05-25 02:56:50 | MASTER-SAAO | (17h 40m 49.81s , +18d 19m 17.4s) | C | 180 | 18.5 |\n 1430 | 2023-05-25 03:00:37 | MASTER-SAAO | (02h 11m 19.03s , -27d 30m 31.0s) | C | 180 | 18.0 |\n 1430 | 2023-05-25 03:00:37 | MASTER-SAAO | (02h 10m 26.37s , -27d 30m 22.3s) | C | 180 | 18.9 |\n 1530 | 2023-05-25 03:02:17 | MASTER-OAFA | (13h 34m 37.77s , +25d 54m 56.5s) | C | 180 | 19.2 |\n 1643 | 2023-05-25 03:04:09 | MASTER-SAAO | (02h 20m 19.94s , -27d 31m 29.7s) | C | 180 | 18.4 |\n 1643 | 2023-05-25 03:04:09 | MASTER-SAAO | (02h 19m 27.44s , -27d 31m 22.2s) | C | 180 | 19.2 |\n 1742 | 2023-05-25 03:05:48 | MASTER-OAFA | (13h 42m 43.76s , +25d 55m 21.5s) | C | 180 | 19.1 |\n 1855 | 2023-05-25 03:07:41 | MASTER-SAAO | (02h 08m 13.23s , -25d 37m 05.0s) | C | 180 | 19.3 |\n 1855 | 2023-05-25 03:07:41 | MASTER-SAAO | (02h 09m 04.81s , -25d 37m 11.9s) | C | 180 | 18.7 |\n 1953 | 2023-05-25 03:09:19 | MASTER-OAFA | (13h 51m 35.39s , +25d 56m 48.2s) | C | 180 | 18.8 |\n 2066 | 2023-05-25 03:11:13 | MASTER-SAAO | (02h 17m 57.73s , -25d 35m 57.5s) | C | 180 | 18.8 |\n 2066 | 2023-05-25 03:11:13 | MASTER-SAAO | (02h 17m 06.29s , -25d 35m 51.1s) | C | 180 | 19.3 |\n 2164 | 2023-05-25 03:12:50 | MASTER-OAFA | (13h 25m 45.46s , +25d 54m 33.6s) | C | 180 | 19.1 |\n 2278 | 2023-05-25 03:14:45 | MASTER-SAAO | (02h 11m 20.44s , -27d 31m 12.4s) | C | 180 | 18.7 |\n 2278 | 2023-05-25 03:14:45 | MASTER-SAAO | (02h 10m 28.01s , -27d 31m 04.9s) | C | 180 | 19.2 |\n 2478 | 2023-05-25 03:18:04 | MASTER-SAAO | (02h 20m 16.68s , -27d 31m 59.1s) | C | 180 | 18.6 |\n 2478 | 2023-05-25 03:18:04 | MASTER-SAAO | (02h 19m 24.27s , -27d 31m 51.4s) | C | 180 | 19.3 |\n 2621 | 2023-05-25 03:20:28 | MASTER-OAFA | (12h 21m 28.53s , +33d 30m 12.9s) | C | 180 | 16.5 |\n 2689 | 2023-05-25 03:21:36 | MASTER-SAAO | (02h 08m 17.55s , -25d 37m 48.6s) | C | 180 | 19.2 |\n 2689 | 2023-05-25 03:21:36 | MASTER-SAAO | (02h 09m 09.24s , -25d 37m 56.8s) | C | 180 | 18.9 |\n 2833 | 2023-05-25 03:24:00 | MASTER-OAFA | (12h 31m 11.58s , +33d 29m 25.8s) | C | 180 | 16.9 |\n 2900 | 2023-05-25 03:25:07 | MASTER-SAAO | (02h 17m 07.57s , -25d 36m 05.4s) | C | 180 | 19.3 |\n 2900 | 2023-05-25 03:25:07 | MASTER-SAAO | (02h 17m 59.38s , -25d 36m 13.1s) | C | 180 | 18.9 |\n 3044 | 2023-05-25 03:27:31 | MASTER-OAFA | (12h 36m 08.96s , +20d 10m 50.0s) | C | 180 | 18.6 |\n 3112 | 2023-05-25 03:28:38 | MASTER-SAAO | (02h 06m 21.25s , -23d 42m 51.3s) | C | 180 | 19.3 |\n 3112 | 2023-05-25 03:28:38 | MASTER-SAAO | (02h 07m 12.49s , -23d 42m 59.6s) | C | 180 | 18.9 |\n 3255 | 2023-05-25 03:31:02 | MASTER-OAFA | (12h 44m 37.31s , +20d 12m 16.3s) | C | 180 | 18.7 |\n 3322 | 2023-05-25 03:32:09 | MASTER-SAAO | (02h 15m 49.92s , -23d 43m 22.8s) | C | 180 | 19.0 |\n 3322 | 2023-05-25 03:32:09 | MASTER-SAAO | (02h 14m 58.77s , -23d 43m 14.0s) | C | 180 | 19.3 |\n 3466 | 2023-05-25 03:34:33 | MASTER-OAFA | (12h 21m 32.49s , +33d 27m 56.3s) | C | 180 | 16.2 |\n 3534 | 2023-05-25 03:35:40 | MASTER-SAAO | (02h 17m 00.60s , -16d 07m 29.4s) | C | 180 | 17.9 |\n 3534 | 2023-05-25 03:35:40 | MASTER-SAAO | (02h 16m 11.96s , -16d 07m 22.9s) | C | 180 | 19.0 |\n 3677 | 2023-05-25 03:38:04 | MASTER-OAFA | (12h 31m 12.04s , +33d 29m 39.5s) | C | 180 | 16.6 |\n 3755 | 2023-05-25 03:39:22 | MASTER-SAAO | (02h 24m 24.94s , -16d 08m 09.9s) | C | 180 | 18.7 |\n 3755 | 2023-05-25 03:39:22 | MASTER-SAAO | (02h 25m 13.51s , -16d 08m 17.5s) | C | 180 | 17.8 |\n 3888 | 2023-05-25 03:41:35 | MASTER-OAFA | (12h 36m 02.18s , +20d 10m 54.2s) | C | 180 | 18.6 |\n 3974 | 2023-05-25 03:43:00 | MASTER-SAAO | (02h 06m 20.69s , -23d 44m 15.3s) | C | 180 | 19.3 |\n 3974 | 2023-05-25 03:43:00 | MASTER-SAAO | (02h 07m 11.92s , -23d 44m 23.4s) | C | 180 | 19.2 |\n 4100 | 2023-05-25 03:45:06 | MASTER-OAFA | (12h 44m 35.10s , +20d 12m 03.0s) | C | 180 | 18.7 |\n 4186 | 2023-05-25 03:46:32 | MASTER-SAAO | (02h 15m 52.05s , -23d 42m 56.5s) | C | 180 | 19.1 |\n 4186 | 2023-05-25 03:46:32 | MASTER-SAAO | (02h 15m 00.85s , -23d 42m 47.9s) | C | 180 | 19.3 |\n 4311 | 2023-05-25 03:48:37 | MASTER-OAFA | (14h 03m 18.48s , +24d 00m 03.2s) | C | 180 | 19.0 |\n 5266 | 2023-05-25 04:04:33 | MASTER-SAAO | (02h 16m 06.18s , -16d 08m 23.9s) | C | 180 | 18.9 |\n 5266 | 2023-05-25 04:04:33 | MASTER-SAAO | (02h 16m 55.75s , -16d 09m 00.6s) | C | 180 | 19.0 |\n 5434 | 2023-05-25 04:07:21 | MASTER-OAFA | (14h 12m 11.39s , +24d 00m 32.7s) | C | 180 | 18.8 |\n 5478 | 2023-05-25 04:08:04 | MASTER-SAAO | (02h 24m 29.19s , -16d 06m 41.4s) | C | 180 | 18.8 |\n 5478 | 2023-05-25 04:08:04 | MASTER-SAAO | (02h 25m 18.71s , -16d 07m 18.1s) | C | 180 | 18.6 |\n 5688 | 2023-05-25 04:11:35 | MASTER-SAAO | (02h 17m 25.73s , -18d 00m 48.4s) | C | 180 | 19.0 |\n 5688 | 2023-05-25 04:11:35 | MASTER-SAAO | (02h 18m 16.09s , -18d 01m 24.3s) | C | 180 | 19.1 |\n 5852 | 2023-05-25 04:14:18 | MASTER-OAFA | (14h 25m 23.79s , +25d 55m 13.8s) | C | 180 | 18.5 |\n 5900 | 2023-05-25 04:15:06 | MASTER-SAAO | (02h 25m 57.75s , -18d 01m 35.3s) | C | 180 | 18.8 |\n 5900 | 2023-05-25 04:15:06 | MASTER-SAAO | (02h 26m 48.12s , -18d 02m 11.2s) | C | 180 | 18.8 |\n 6063 | 2023-05-25 04:17:50 | MASTER-OAFA | (13h 59m 37.93s , +25d 54m 44.7s) | C | 180 | 18.7 |\n 6111 | 2023-05-25 04:18:38 | MASTER-SAAO | (01h 59m 13.02s , -14d 15m 19.5s) | C | 180 | 19.1 |\n 6111 | 2023-05-25 04:18:38 | MASTER-SAAO | (02h 00m 02.68s , -14d 15m 54.8s) | C | 180 | 19.1 |\n 6274 | 2023-05-25 04:21:21 | MASTER-OAFA | (14h 08m 26.92s , +25d 53m 57.8s) | C | 180 | 18.7 |\n 6323 | 2023-05-25 04:22:09 | MASTER-SAAO | (02h 07m 25.60s , -14d 13m 16.4s) | C | 180 | 18.6 |\n 6323 | 2023-05-25 04:22:09 | MASTER-SAAO | (02h 08m 15.27s , -14d 13m 51.2s) | C | 180 | 18.6 |\n 6485 | 2023-05-25 04:24:52 | MASTER-OAFA | (14h 16m 26.88s , +25d 54m 59.9s) | C | 180 | 18.5 |\n 6534 | 2023-05-25 04:25:41 | MASTER-SAAO | (02h 18m 19.40s , -18d 03m 28.0s) | C | 180 | 17.9 |\n 6534 | 2023-05-25 04:25:41 | MASTER-SAAO | (02h 17m 28.63s , -18d 02m 53.1s) | C | 180 | 18.0 |\n 6696 | 2023-05-25 04:28:23 | MASTER-OAFA | (14h 25m 26.72s , +25d 54m 02.1s) | C | 180 | 18.4 |\n 6745 | 2023-05-25 04:29:12 | MASTER-SAAO | (02h 26m 46.18s , -18d 01m 40.3s) | C | 180 | 17.5 |\n 6745 | 2023-05-25 04:29:12 | MASTER-SAAO | (02h 25m 55.48s , -18d 01m 05.6s) | C | 180 | 17.5 |\n 6908 | 2023-05-25 04:31:54 | MASTER-OAFA | (13h 59m 31.04s , +25d 52m 20.9s) | C | 180 | 18.6 |\n 6957 | 2023-05-25 04:32:43 | MASTER-SAAO | (01h 59m 56.13s , -14d 15m 03.2s) | C | 180 | 17.5 |\n 6957 | 2023-05-25 04:32:43 | MASTER-SAAO | (01h 59m 06.14s , -14d 14m 29.1s) | C | 180 | 17.5 |\n 7413 | 2023-05-25 04:40:20 | MASTER-OAFA | (13h 46m 42.34s , +23d 58m 01.7s) | C | 180 | 18.8 |\n 7625 | 2023-05-25 04:43:51 | MASTER-OAFA | (13h 55m 30.53s , +23d 59m 46.2s) | C | 180 | 19.0 |\n 7836 | 2023-05-25 04:47:22 | MASTER-OAFA | (13h 56m 34.28s , +27d 47m 41.6s) | C | 180 | 18.3 |\n 8047 | 2023-05-25 04:50:54 | MASTER-OAFA | (14h 05m 41.65s , +27d 46m 45.7s) | C | 180 | 18.4 |\n 8259 | 2023-05-25 04:54:25 | MASTER-OAFA | (13h 46m 39.93s , +23d 57m 09.0s) | C | 180 | 18.9 |\n 8469 | 2023-05-25 04:57:56 | MASTER-OAFA | (13h 55m 32.43s , +23d 57m 28.7s) | C | 180 | 18.8 |\n 8848 | 2023-05-25 05:04:14 | MASTER-OAFA | (14h 05m 39.55s , +27d 45m 18.6s) | C | 180 | 18.3 |\n 9059 | 2023-05-25 05:07:46 | MASTER-OAFA | (14h 13m 45.65s , +27d 46m 15.7s) | C | 180 | 18.4 |\n 9403 | 2023-05-25 05:13:29 | MASTER-OAFA | (14h 07m 54.50s , +22d 02m 50.9s) | C | 180 | 18.7 |\n 9614 | 2023-05-25 05:17:01 | MASTER-OAFA | (14h 16m 38.26s , +22d 03m 17.7s) | C | 180 | 18.7 |\n 9990 | 2023-05-25 05:23:16 | MASTER-OAFA | (14h 22m 51.67s , +27d 45m 02.4s) | C | 180 | 18.4 |\n 10201 | 2023-05-25 05:26:48 | MASTER-OAFA | (14h 07m 59.53s , +22d 04m 05.9s) | C | 180 | 18.7 |\n 10412 | 2023-05-25 05:30:19 | MASTER-OAFA | (14h 16m 31.76s , +22d 03m 23.0s) | C | 180 | 18.5 |\n 10784 | 2023-05-25 05:36:31 | MASTER-OAFA | (14h 09m 12.65s , +08d 43m 53.9s) | C | 180 | 18.6 |\n 10996 | 2023-05-25 05:40:02 | MASTER-OAFA | (14h 12m 39.16s , +06d 51m 42.6s) | C | 180 | 18.8 |\n 11489 | 2023-05-25 05:48:15 | MASTER-OAFA | (14h 01m 13.70s , +08d 44m 59.5s) | C | 180 | 18.4 |\n 11700 | 2023-05-25 05:51:46 | MASTER-OAFA | (14h 09m 13.31s , +08d 44m 17.3s) | C | 180 | 18.6 |\n 11911 | 2023-05-25 05:55:17 | MASTER-OAFA | (14h 12m 36.61s , +06d 51m 12.9s) | C | 180 | 18.8 |\n 12122 | 2023-05-25 05:58:48 | MASTER-OAFA | (14h 20m 45.87s , +06d 50m 15.1s) | C | 180 | 18.7 |\n 12333 | 2023-05-25 06:02:20 | MASTER-OAFA | (14h 16m 35.91s , +08d 43m 26.2s) | C | 180 | 18.5 |\n 12544 | 2023-05-25 06:05:51 | MASTER-OAFA | (14h 24m 39.46s , +08d 44m 54.7s) | C | 180 | 18.7 |\n 12758 | 2023-05-25 06:09:24 | MASTER-OAFA | (00h 34m 20.55s , -42d 51m 07.8s) | C | 180 | 18.4 |\n 12972 | 2023-05-25 06:12:58 | MASTER-OAFA | (00h 44m 33.61s , -42d 12m 13.5s) | C | 180 | 17.3 |\n 15091 | 2023-05-25 06:48:17 | MASTER-OAFA | (15h 26m 32.57s , -20d 13m 24.4s) | C | 180 | 19.0 |\n 15302 | 2023-05-25 06:51:48 | MASTER-OAFA | (15h 47m 28.65s , -23d 57m 29.0s) | C | 180 | 18.9 |\n 20013 | 2023-05-25 08:10:19 | MASTER-OAFA | (19h 51m 20.60s , -56d 58m 44.9s) | C | 180 | 19.2 |\n 20442 | 2023-05-25 08:17:28 | MASTER-OAFA | (19h 28m 02.35s , -49d 33m 55.8s) | C | 180 | 19.1 |\n 20653 | 2023-05-25 08:21:00 | MASTER-OAFA | (20h 20m 36.04s , -58d 44m 06.1s) | C | 180 | 19.1 |\n 21018 | 2023-05-25 08:27:05 | MASTER-OAFA | (17h 50m 13.51s , -58d 03m 11.3s) | C | 180 | 12.1 |\n 21454 | 2023-05-25 08:34:21 | MASTER-OAFA | (21h 04m 21.63s , -61d 18m 52.7s) | C | 180 | 19.2 |\n 21871 | 2023-05-25 08:41:18 | MASTER-OAFA | (21h 50m 49.44s , -68d 17m 52.1s) | C | 180 | 19.1 |\n 22083 | 2023-05-25 08:44:49 | MASTER-OAFA | (22h 43m 57.70s , -77d 52m 52.1s) | C | 180 | 19.2 |\n 22294 | 2023-05-25 08:48:20 | MASTER-OAFA | (22h 44m 28.42s , -85d 16m 10.6s) | C | 180 | 19.0 |\n 22505 | 2023-05-25 08:51:52 | MASTER-OAFA | (22h 40m 38.85s , -85d 03m 07.4s) | C | 180 | 18.7 |\n 23471 | 2023-05-25 09:07:57 | MASTER-OAFA | (02h 26m 21.41s , -18d 07m 31.3s) | C | 180 | 17.9 |\n 23858 | 2023-05-25 09:14:24 | MASTER-OAFA | (21h 17m 32.92s , +00d 04m 04.7s) | C | 180 | 19.3 |\n 24070 | 2023-05-25 09:17:56 | MASTER-OAFA | (02h 24m 58.98s , -16d 15m 14.3s) | C | 180 | 17.6 |\n 24281 | 2023-05-25 09:21:27 | MASTER-OAFA | (21h 17m 35.75s , +00d 05m 43.6s) | C | 180 | 19.3 |\n 24461 | 2023-05-25 09:21:27 | MASTER-OAFA | (21h 17m 35.74s , +00d 05m 43.5s) | C | 540 | 19.9 | Coadd\n 24644 | 2023-05-25 09:27:31 | MASTER-OAFA | (02h 18m 06.21s , -18d 07m 14.8s) | C | 180 | 17.7 |\n 24856 | 2023-05-25 09:31:02 | MASTER-OAFA | (02h 26m 23.27s , -18d 07m 51.9s) | C | 180 | 17.6 |\n 25660 | 2023-05-25 09:44:27 | MASTER-OAFA | (21h 17m 31.31s , +00d 03m 12.7s) | C | 180 | 19.2 |\n 25804 | 2023-05-25 09:48:20 | MASTER-OAFA | (00h 03m 19.98s , -00d 08m 42.6s) | C | -1 | 14.0 |\n 25868 | 2023-05-25 09:49:25 | MASTER-OAFA | (00h 03m 15.90s , -00d 06m 48.1s) | C | -1 | 17.1 |\n 25991 | 2023-05-25 09:49:57 | MASTER-OAFA | (21h 17m 37.54s , +00d 04m 01.6s) | C | 180 | 19.2 |\n 26133 | 2023-05-25 09:53:50 | MASTER-OAFA | (00h 03m 20.08s , -00d 06m 54.0s) | C | -1 | 14.9 |\n 26289 | 2023-05-25 09:54:55 | MASTER-OAFA | (21h 17m 32.66s , +00d 03m 55.0s) | C | 180 | 17.5 |\n 26262 | 2023-05-25 09:55:59 | MASTER-OAFA | (23h 55m 15.83s , -00d 08m 56.4s) | C | -1 | 17.7 |\n 26327 | 2023-05-25 09:57:03 | MASTER-OAFA | (23h 55m 19.45s , -00d 07m 12.9s) | C | -1 | 17.7 |\n 26392 | 2023-05-25 09:58:08 | MASTER-OAFA | (23h 55m 22.74s , -00d 07m 25.3s) | C | -1 | 17.6 |\n 26456 | 2023-05-25 09:59:13 | MASTER-OAFA | (23h 55m 23.57s , -00d 07m 58.4s) | C | -1 | 17.7 |\n 26612 | 2023-05-25 10:00:18 | MASTER-OAFA | (21h 17m 39.75s , +00d 02m 54.4s) | C | 180 | 17.5 |\n 26589 | 2023-05-25 10:01:25 | MASTER-OAFA | (00h 03m 23.33s , -00d 07m 01.9s) | C | -1 | 17.6 |\n 26711 | 2023-05-25 10:01:58 | MASTER-OAFA | (02h 00m 21.16s , -14d 14m 35.0s) | C | 180 | 17.0 |\n 26923 | 2023-05-25 10:05:29 | MASTER-OAFA | (02h 08m 39.75s , -14d 15m 53.4s) | C | 180 | 16.5 |\n 27135 | 2023-05-25 10:09:01 | MASTER-OAFA | (01h 59m 42.72s , -12d 20m 56.3s) | C | 180 | 17.5 |\n 27278 | 2023-05-25 10:12:55 | MASTER-OAFA | (00h 03m 20.32s , -00d 08m 49.6s) | C | -1 | 15.2 |\n 27342 | 2023-05-25 10:13:58 | MASTER-OAFA | (00h 03m 17.79s , -00d 08m 00.3s) | C | -1 | 17.5 |\n 27404 | 2023-05-25 10:15:01 | MASTER-OAFA | (00h 03m 23.58s , -00d 07m 58.6s) | C | -1 | 17.4 |\n 27469 | 2023-05-25 10:16:05 | MASTER-OAFA | (00h 03m 23.05s , -00d 08m 53.1s) | C | -1 | 16.9 |\n 27534 | 2023-05-25 10:17:10 | MASTER-OAFA | (00h 03m 20.02s , -00d 08m 49.9s) | C | -1 | 16.9 |\n 28122 | 2023-05-25 10:25:29 | MASTER-OAFA | (02h 08m 50.56s , -14d 12m 37.1s) | C | 180 | 16.5 |\n 28480 | 2023-05-25 10:32:57 | MASTER-OAFA | (00h 03m 17.26s , -00d 08m 16.0s) | C | -1 | 15.5 |\n 28546 | 2023-05-25 10:34:02 | MASTER-OAFA | (00h 03m 23.06s , -00d 08m 13.6s) | C | -1 | 15.9 |\n 28611 | 2023-05-25 10:35:07 | MASTER-OAFA | (00h 03m 23.23s , -00d 09m 07.4s) | C | -1 | 15.8 |\n 29048 | 2023-05-25 10:42:24 | MASTER-OAFA | (00h 03m 17.87s , -00d 07m 22.7s) | C | -1 | 14.4 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n",
"published": "2023-05-27T15:28:35.128809Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-05-27T15:28:35.128841Z",
"modified": "2023-05-27T15:28:35.140900Z",
"targets": []
}
]
},
{
"event_id": "S230527bv",
"sequences": [
{
"id": 16,
"sequence_number": 1,
"sequence_type": "PRELIMINARY",
"message": {
"id": 88,
"topic": "igwn.gwalert",
"uuid": "dca0a82b-fc1b-40fd-abbd-d623c3cec844",
"title": "S230527bv - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230527bv/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230527bv/view/"
},
"event": {
"far": 2.071668481134995e-07,
"time": "2023-05-27T17:25:29.816Z",
"group": "CBC",
"search": "AllSky",
"area_50": 2.148591731740587,
"area_90": 2.148591731740587,
"duration": null,
"pipeline": "gstlal",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.0,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "dedd9f508caa7face86fa728c8fe3fb0",
"classification": {
"BBH": 0.8818808929424823,
"BNS": 6.980777682401856e-23,
"NSBH": 6.082305138020538e-21,
"Terrestrial": 0.11811910705751771
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-05-27T17:26:08Z",
"superevent_id": "S230527bv",
"external_coinc": null
},
"message_text": "",
"published": "2023-05-27T17:26:10.274640Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-05-27T17:26:10.274666Z",
"modified": "2023-05-27T17:26:10.281259Z"
}
},
{
"id": 17,
"sequence_number": 2,
"sequence_type": "PRELIMINARY",
"message": {
"id": 89,
"topic": "igwn.gwalert",
"uuid": "b98332c7-4d25-4070-b711-14e5436598ef",
"title": "S230527bv - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230527bv/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230527bv/view/"
},
"event": {
"far": 2.071668481134995e-07,
"time": "2023-05-27T17:25:29.816Z",
"group": "CBC",
"search": "AllSky",
"area_50": 2.148591731740587,
"area_90": 2.148591731740587,
"duration": null,
"pipeline": "gstlal",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.0,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "dedd9f508caa7face86fa728c8fe3fb0",
"classification": {
"BBH": 0.8818808929424823,
"BNS": 6.980777682401856e-23,
"NSBH": 6.082305138020538e-21,
"Terrestrial": 0.11811910705751771
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-05-27T17:30:45Z",
"superevent_id": "S230527bv",
"external_coinc": null
},
"message_text": "",
"published": "2023-05-27T17:30:46.527773Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-05-27T17:30:46.527797Z",
"modified": "2023-05-27T17:30:46.532345Z"
}
}
],
"references": []
},
{
"event_id": "S230527ch",
"sequences": [
{
"id": 18,
"sequence_number": 1,
"sequence_type": "PRELIMINARY",
"message": {
"id": 91,
"topic": "igwn.gwalert",
"uuid": "e5745508-118b-4d82-ab7e-121535a14533",
"title": "S230527ch - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230527ch/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230527ch/view/"
},
"event": {
"far": 2.53734e-06,
"time": "2023-05-27T18:10:28.684Z",
"group": "Burst",
"search": "AllSky",
"duration": 0.050814,
"pipeline": "CWB",
"properties": {},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "1e20793bf8fa5f0e0dafaa4e580d081c",
"classification": {},
"skymap_version": 0,
"central_frequency": 1074.69812
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-05-27T18:13:37Z",
"superevent_id": "S230527ch",
"external_coinc": null
},
"message_text": "",
"published": "2023-05-27T18:13:38.495834Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-05-27T18:13:38.495859Z",
"modified": "2023-05-27T18:13:38.501588Z"
}
},
{
"id": 19,
"sequence_number": 2,
"sequence_type": "PRELIMINARY",
"message": {
"id": 92,
"topic": "igwn.gwalert",
"uuid": "5e4a8d46-451a-4879-807f-113241007314",
"title": "S230527ch - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230527ch/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230527ch/view/"
},
"event": {
"far": 2.53734e-06,
"time": "2023-05-27T18:10:28.684Z",
"group": "Burst",
"search": "AllSky",
"duration": 0.050814,
"pipeline": "CWB",
"properties": {},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "1e20793bf8fa5f0e0dafaa4e580d081c",
"classification": {},
"skymap_version": 0,
"central_frequency": 1074.69812
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-05-27T18:18:14Z",
"superevent_id": "S230527ch",
"external_coinc": null
},
"message_text": "",
"published": "2023-05-27T18:18:15.356740Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-05-27T18:18:15.356786Z",
"modified": "2023-05-27T18:18:15.365812Z"
}
}
],
"references": []
},
{
"event_id": "S230528a",
"sequences": [
{
"id": 20,
"sequence_number": 1,
"sequence_type": "PRELIMINARY",
"message": {
"id": 95,
"topic": "igwn.gwalert",
"uuid": "3c0ba1d2-e677-4d10-acac-3ffda408ba16",
"title": "S230528a - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230528a/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230528a/view/"
},
"event": {
"far": 3.038830129753478e-07,
"time": "2023-05-28T02:27:14.803Z",
"group": "CBC",
"search": "AllSky",
"area_50": 2.148591731740587,
"area_90": 2.148591731740587,
"duration": null,
"pipeline": "spiir",
"properties": {
"HasNS": 1.0,
"HasMassGap": 0.974013044198111,
"HasRemnant": 0.01733164173860173
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "ecbcbb3676938050c28924e0eed79bc0",
"classification": {
"BBH": 0.0,
"BNS": 0.20222651025283195,
"NSBH": 0.4408798931092301,
"Terrestrial": 0.35689359663793796
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-05-28T02:27:44Z",
"superevent_id": "S230528a",
"external_coinc": null
},
"message_text": "",
"published": "2023-05-28T02:27:45.413710Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-05-28T02:27:45.413750Z",
"modified": "2023-05-28T02:27:45.419682Z"
}
},
{
"id": 21,
"sequence_number": 2,
"sequence_type": "PRELIMINARY",
"message": {
"id": 97,
"topic": "igwn.gwalert",
"uuid": "b0ea451b-9094-4a50-a756-215888e6ecd2",
"title": "S230528a - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230528a/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230528a/view/"
},
"event": {
"far": 3.038830129753478e-07,
"time": "2023-05-28T02:27:14.803Z",
"group": "CBC",
"search": "AllSky",
"area_50": 2.148591731740587,
"area_90": 2.148591731740587,
"duration": null,
"pipeline": "spiir",
"properties": {
"HasNS": 1.0,
"HasMassGap": 0.974013044198111,
"HasRemnant": 0.01733164173860173
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "ecbcbb3676938050c28924e0eed79bc0",
"classification": {
"BBH": 0.0,
"BNS": 0.20222651025283195,
"NSBH": 0.4408798931092301,
"Terrestrial": 0.35689359663793796
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-05-28T02:32:21Z",
"superevent_id": "S230528a",
"external_coinc": null
},
"message_text": "",
"published": "2023-05-28T02:32:22.100820Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-05-28T02:32:22.100843Z",
"modified": "2023-05-28T02:32:22.105438Z"
}
}
],
"references": [
{
"id": 122,
"topic": "gcn.circular",
"uuid": "910886c7-843a-4d49-9f86-d6e3dd04477f",
"title": "LIGO/Virgo/KAGRA S230528a: Zwicky Transient Facility observations",
"submitter": "Hop gcn.circular",
"authors": "Viraj Karambelkar at Indian Inst of Tech,Bombay <karambelkarvraj21197@gmail.com>",
"data": {
"date": "23/05/31 03:32:34 GMT",
"from": "Viraj Karambelkar at Indian Inst of Tech,Bombay <karambelkarvraj21197@gmail.com>",
"title": "GCN CIRCULAR",
"number": "33899",
"subject": "LIGO/Virgo/KAGRA S230528a: Zwicky Transient Facility observations"
},
"message_text": "Tomas Ahumada (CIT), Akash Anumarlapudi(UWM), Viraj Karambelkar (CIT),\nRobert Stein (CIT), Gaurav Waratkar (IITB), Anirudh Salgundi (IITB),\nVishwajeet Swain (IITB), Theophile du Laz (CIT), Igor Andreoni (UMD),\nMichael Coughlin (UMN), Mansi Kasliwal (CIT), Varun Bhalerao (IITB), Simeon\nReusch (DESY), Jannis Necker (DESY), Shreya Anand (CIT), Eric Bellm (UW),\nS.B. Cenko (UMD), D. Perley (LJMU), D. Kaplan (UWM) report on behalf of the\nZTF and GROWTH collaborations:\n\n\nWe observed the localization region of LVC trigger S230528a as part of\nroutine Zwicky Transient Facility (ZTF; Graham et al., 2019; Bellm et al.,\n2019) survey operations. We obtained images in the r, i, and g bands\nbeginning at 2023-05-28T05:38:40.001 (3 hours after the burst trigger\ntime). The observations covered ~5% of the probability enclosed in the\nlocalization region.\n\n\nWe queried the ZTF alert stream using Kowalski (Duev et al. 2019) through\nFritz (Coughlin et al. 2023) and emgwcave (Karambelkar et al. in prep),\nAMPEL (Nordin et al. 2019), and ZTFReST (Andreoni & Coughlin et al., 2021).\nWe required at least 2 detections separated by at least 15 minutes to\nselect against moving objects. Furthermore, we cross-match our candidates\nwith the Minor Planet Center to flag known asteroids, reject stellar\nsources (Tachibana and Miller 2018), and apply machine learning algorithms\n(Mahabal et al. 2019). We require that no spatially coincident ZTF alerts\nwere issued before the detection time of the LVC trigger. We also run\nforced photometry on ZTF images (Masci et al. 2019) and ATLAS images (Tonry\net al. 2018, Smith et al. 2020) and require no detections before the LVC\ntrigger.\n\nWe do not identify any sources that pass our selection criteria.\n\n\nFurther follow-up of this localization region will continue as part of\nregular survey operations.\n\n\nZTF and GROWTH are worldwide collaborations comprising Caltech, USA; IPAC,\nUSA, WIS, Israel; OKC, Sweden; JSI/UMd, USA; U Washington, USA; DESY,\nGermany; MOST, Taiwan; UW Milwaukee, USA; LANL USA; Tokyo Tech, Japan;\nIITB, India; IIA, India; LJMU, UK; TTU, USA; SDSU, USA and USyd, Australia.\nZTF acknowledges the generous support of the NSF under AST MSIP Grant No\n1440341. GROWTH acknowledges generous support of the NSF under PIRE Grant\nNo 1545949. Alert distribution service provided by DIRAC@UW (Patterson et\nal. 2019). Alert database searches are done by AMPEL (Nordin et al. 2019)\nand Kowalski (Duev et al. 2019). GROWTH India telescope is located at the\nIndian Astronomical Observatory (Hanle), operated by the Indian Institute\nof Astrophysics (IIA). GROWTH-India project is supported by SERB and\nadministered by IUSSTF, under grant number IUSSTF/PIRE\nProgram/GROWTH/2015-16 and IUCAA.\n\n",
"published": "2023-05-31T03:32:39.045941Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-05-31T03:32:39.045962Z",
"modified": "2023-05-31T03:32:39.050554Z",
"targets": []
}
]
},
{
"event_id": "S230528bt",
"sequences": [
{
"id": 22,
"sequence_number": 1,
"sequence_type": "PRELIMINARY",
"message": {
"id": 99,
"topic": "igwn.gwalert",
"uuid": "4dfd9bbb-0f0a-4d1a-ab27-fed153df69b5",
"title": "S230528bt - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230528bt/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230528bt/view/"
},
"event": {
"far": 2.872341078306187e-07,
"time": "2023-05-28T14:51:29.733Z",
"group": "CBC",
"search": "AllSky",
"area_50": 2.148591731740587,
"area_90": 2.148591731740587,
"duration": null,
"pipeline": "gstlal",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.04264138160689884,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "bc019960231f907565492a7c51e7a81d",
"classification": {
"BBH": 0.8800896130199481,
"BNS": 4.095836186293947e-18,
"NSBH": 3.2727855767245523e-16,
"Terrestrial": 0.11991038698005152
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-05-28T14:51:52Z",
"superevent_id": "S230528bt",
"external_coinc": null
},
"message_text": "",
"published": "2023-05-28T14:51:54.027007Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-05-28T14:51:54.027033Z",
"modified": "2023-05-28T14:51:54.032614Z"
}
},
{
"id": 23,
"sequence_number": 2,
"sequence_type": "PRELIMINARY",
"message": {
"id": 100,
"topic": "igwn.gwalert",
"uuid": "b83e98ec-d70d-4d68-b642-89cbd9bc3a69",
"title": "S230528bt - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230528bt/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230528bt/view/"
},
"event": {
"far": 2.872341078306187e-07,
"time": "2023-05-28T14:51:29.733Z",
"group": "CBC",
"search": "AllSky",
"area_50": 2.148591731740587,
"area_90": 2.148591731740587,
"duration": null,
"pipeline": "gstlal",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.04264138160689884,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "bc019960231f907565492a7c51e7a81d",
"classification": {
"BBH": 0.8800896130199481,
"BNS": 4.095836186293947e-18,
"NSBH": 3.2727855767245523e-16,
"Terrestrial": 0.11991038698005152
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-05-28T14:56:27Z",
"superevent_id": "S230528bt",
"external_coinc": null
},
"message_text": "",
"published": "2023-05-28T14:56:29.641322Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-05-28T14:56:29.641349Z",
"modified": "2023-05-28T14:56:29.646398Z"
}
}
],
"references": []
},
{
"event_id": "S230529p",
"sequences": [
{
"id": 24,
"sequence_number": 1,
"sequence_type": "PRELIMINARY",
"message": {
"id": 103,
"topic": "igwn.gwalert",
"uuid": "3433596f-9866-457e-b211-a772daecdb3b",
"title": "S230529p - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230529p/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230529p/view/"
},
"event": {
"far": 6.287578496854043e-07,
"time": "2023-05-29T10:27:44.704Z",
"group": "CBC",
"search": "AllSky",
"area_50": 2.148591731740587,
"area_90": 2.148591731740587,
"duration": null,
"pipeline": "pycbc",
"properties": {
"HasNS": 1.0,
"HasMassGap": 0.1136634405729568,
"HasRemnant": 0.009234226165240977
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "d9430c0287d113b17c8187c843cbbbdb",
"classification": {
"BBH": 0.0021805498962315694,
"BNS": 0.0,
"NSBH": 0.024779051187418383,
"Terrestrial": 0.9730403989163501
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-05-29T10:28:13Z",
"superevent_id": "S230529p",
"external_coinc": null
},
"message_text": "",
"published": "2023-05-29T10:28:15.119157Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-05-29T10:28:15.119188Z",
"modified": "2023-05-29T10:28:15.126273Z"
}
},
{
"id": 25,
"sequence_number": 2,
"sequence_type": "PRELIMINARY",
"message": {
"id": 104,
"topic": "igwn.gwalert",
"uuid": "63306974-3dbf-4ba6-93b3-3b8bbc84b061",
"title": "S230529p - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230529p/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230529p/view/"
},
"event": {
"far": 6.287578496854043e-07,
"time": "2023-05-29T10:27:44.704Z",
"group": "CBC",
"search": "AllSky",
"area_50": 2.148591731740587,
"area_90": 2.148591731740587,
"duration": null,
"pipeline": "pycbc",
"properties": {
"HasNS": 1.0,
"HasMassGap": 0.1136634405729568,
"HasRemnant": 0.009234226165240977
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "d9430c0287d113b17c8187c843cbbbdb",
"classification": {
"BBH": 0.0021805498962315694,
"BNS": 0.0,
"NSBH": 0.024779051187418383,
"Terrestrial": 0.9730403989163501
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-05-29T10:37:49Z",
"superevent_id": "S230529p",
"external_coinc": null
},
"message_text": "",
"published": "2023-05-29T10:37:50.855376Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-05-29T10:37:50.855424Z",
"modified": "2023-05-29T10:37:50.861469Z"
}
}
],
"references": [
{
"id": 106,
"topic": "gcn.circular",
"uuid": "e893f9d0-c3ba-4f97-bf8a-71a612da8c59",
"title": "LIGO/Virgo S230529p: Global MASTER-Net observations report",
"submitter": "Hop gcn.circular",
"authors": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"data": {
"date": "23/05/29 13:58:39 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "33888",
"subject": "LIGO/Virgo S230529p: Global MASTER-Net observations report"
},
"message_text": "V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko,\nG.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin\n(Lomonosov Moscow State University, SAI, Physics Department),\n\nR. Podesta, C.Lopez, F. Podesta, C.Francile\n(Observatorio Astronomico Felix Aguilar OAFA),\n\nR. Rebolo, M. Serra\n(The Instituto de Astrofisica de Canarias),\n\nD. Buckley\n(South African Astronomical Observatory),\n\nO.A. Gres, N.M. Budnev\n(Irkutsk State University, API),\n\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez\n(INAOE, Guillermo Haro Astrophysics Observatory),\n\nA. Tlatov, D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nA. Gabovich, V.Yurkov\n(Blagoveschensk Educational State University)\n\n\nMASTER-Amur robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Russia (Blagoveshchensk State Pedagogical University) started inspect of the LIGO/Virgo S230529p errorbox 531 sec after notice time and 11954 sec after trigger time at 2023-05-29 13:46:58 UT, with upper limit up to 17.0 mag. Observations started at twilight. The observations began at zenith distance = 67 deg. The sun altitude is -15.0 deg.\n\nThe galactic latitude b = -15 deg., longitude l = 256 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/ligo_1.php?id\u0011906\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 12044 | 2023-05-29 13:46:58 | MASTER-Amur | (21h 15m 20.07s , +37d 24m 39.1s) | C | 180 | 17.0 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n",
"published": "2023-05-29T13:58:47.447606Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-05-29T13:58:47.447627Z",
"modified": "2023-05-29T13:58:47.454588Z",
"targets": []
}
]
},
{
"event_id": "S230529ay",
"sequences": [
{
"id": 26,
"sequence_number": 1,
"sequence_type": "PRELIMINARY",
"message": {
"id": 107,
"topic": "igwn.gwalert",
"uuid": "501b0a53-15d1-4d02-a0bb-3f6a76eb3718",
"title": "S230529ay - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230529ay/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230529ay/view/"
},
"event": {
"far": 1.975121185032117e-10,
"time": "2023-05-29T18:15:00.746Z",
"group": "CBC",
"search": "AllSky",
"area_50": 4.297183463481174,
"area_90": 8.594366926962348,
"duration": null,
"pipeline": "pycbc",
"properties": {
"HasNS": 1.0,
"HasMassGap": 0.9847387913344903,
"HasRemnant": 0.12057811461919889
},
"instruments": [
"L1"
],
"significant": true,
"skymap_hash": "27e093b82033277b3693344e16cac52b",
"classification": {
"BBH": 0.0,
"BNS": 0.30601513334446906,
"NSBH": 0.6240278234757632,
"Terrestrial": 0.0699570431797677
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-05-29T18:15:26Z",
"superevent_id": "S230529ay",
"external_coinc": null
},
"message_text": "",
"published": "2023-05-29T18:15:28.627837Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-05-29T18:15:28.627862Z",
"modified": "2023-05-29T18:15:28.634149Z"
}
},
{
"id": 27,
"sequence_number": 2,
"sequence_type": "PRELIMINARY",
"message": {
"id": 108,
"topic": "igwn.gwalert",
"uuid": "1a876cbb-ec62-4116-874d-c249e9c85c99",
"title": "S230529ay - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230529ay/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230529ay/view/"
},
"event": {
"far": 1.975121185032117e-10,
"time": "2023-05-29T18:15:00.746Z",
"group": "CBC",
"search": "AllSky",
"area_50": 4.297183463481174,
"area_90": 8.594366926962348,
"duration": null,
"pipeline": "pycbc",
"properties": {
"HasNS": 1.0,
"HasMassGap": 0.9847387913344903,
"HasRemnant": 0.12057811461919889
},
"instruments": [
"L1"
],
"significant": true,
"skymap_hash": "27e093b82033277b3693344e16cac52b",
"classification": {
"BBH": 0.0,
"BNS": 0.30601513334446906,
"NSBH": 0.6240278234757632,
"Terrestrial": 0.0699570431797677
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-05-29T18:20:15Z",
"superevent_id": "S230529ay",
"external_coinc": null
},
"message_text": "",
"published": "2023-05-29T18:20:16.316501Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-05-29T18:20:16.316525Z",
"modified": "2023-05-29T18:20:16.321345Z"
}
},
{
"id": 28,
"sequence_number": 3,
"sequence_type": "INITIAL",
"message": {
"id": 109,
"topic": "igwn.gwalert",
"uuid": "2270c12b-4e70-4b11-bb87-4e99e41991d5",
"title": "S230529ay - INITIAL",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230529ay/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230529ay/view/"
},
"event": {
"far": 1.975121185032117e-10,
"time": "2023-05-29T18:15:00.746Z",
"group": "CBC",
"search": "AllSky",
"area_50": 4.297183463481174,
"area_90": 8.594366926962348,
"duration": null,
"pipeline": "pycbc",
"properties": {
"HasNS": 1.0,
"HasMassGap": 0.9847387913344903,
"HasRemnant": 0.12057811461919889
},
"instruments": [
"L1"
],
"significant": true,
"skymap_hash": "27e093b82033277b3693344e16cac52b",
"classification": {
"BBH": 0.0,
"BNS": 0.30601513334446906,
"NSBH": 0.6240278234757632,
"Terrestrial": 0.0699570431797677
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "INITIAL",
"sequence_num": 3,
"time_created": "2023-05-29T18:27:30Z",
"superevent_id": "S230529ay",
"external_coinc": null
},
"message_text": "",
"published": "2023-05-29T18:27:32.593681Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-05-29T18:27:32.593707Z",
"modified": "2023-05-29T18:27:32.598636Z"
}
},
{
"id": 464,
"sequence_number": 4,
"sequence_type": "UPDATE",
"message": {
"id": 941,
"topic": "igwn.gwalert",
"uuid": "0649e6c4-06ff-4aee-bcff-64bb0cb4db75",
"title": "S230529ay - UPDATE",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230529ay/files/bayestar.multiorder.fits,1",
"gracedb": "https://gracedb.ligo.org/superevents/S230529ay/view/"
},
"event": {
"far": 1.975121185032117e-10,
"time": "2023-05-29T18:15:00.746Z",
"group": "CBC",
"search": "AllSky",
"area_50": 8430.704666146172,
"area_90": 24534.231836812833,
"duration": null,
"pipeline": "pycbc",
"properties": {
"HasNS": 0.980829231308616,
"HasMassGap": 0.7258304847050574,
"HasRemnant": 0.07214606012796915
},
"instruments": [
"L1"
],
"significant": true,
"skymap_hash": "f4e156cef2c35b2b3bd93c7b8615b6e9",
"classification": {
"BBH": 0.0,
"BNS": 0.30601513334446906,
"NSBH": 0.6240278234757632,
"Terrestrial": 0.0699570431797677
},
"skymap_version": 1,
"central_frequency": null
},
"alert_type": "UPDATE",
"sequence_num": 4,
"time_created": "2023-07-06T14:09:33Z",
"superevent_id": "S230529ay",
"external_coinc": null
},
"message_text": "",
"published": "2023-07-06T14:09:34.676081Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-07-06T14:09:34.676127Z",
"modified": "2023-07-06T14:09:34.696014Z"
}
}
],
"references": []
},
{
"event_id": "S230529a",
"sequences": [],
"references": [
{
"id": 942,
"topic": "gcn.circular",
"uuid": "6017f0bf-b5d4-4544-b811-2aed085c9263",
"title": "LIGO/Virgo/KAGRA S230529ay: Updated Sky localization and EM Bright Classification",
"submitter": "Hop gcn.circular",
"authors": "Sylvia Biscoveanu at MIT <sylvia.biscoveanu@ligo.org>",
"data": {
"date": "23/07/06 14:20:32 GMT",
"from": "Sylvia Biscoveanu at MIT <sylvia.biscoveanu@ligo.org>",
"title": "GCN CIRCULAR",
"number": "34148",
"subject": "LIGO/Virgo/KAGRA S230529ay: Updated Sky localization and EM Bright Classification"
},
"message_text": "The LIGO Scientific Collaboration, the Virgo Collaboration, and the KAGRA Collaboration report:\n\nWe have conducted further offline analysis of the LIGO Livingston Observatory (L1) data around the time of the compact binary merger (CBC) candidate S230529ay (GCN Circular 33889). Parameter estimation has been performed using Bilby [1] and a new sky map, Bilby.offline0.multiorder.fits,0, distributed via GCN Notice, is available for retrieval from the GraceDB event page: https://gracedb.ligo.org/superevents/S230529ay\n\nBased on posterior support from parameter estimation [1], under the assumption that the candidate S230529ay is astrophysical in origin,the probability that the lighter compact object is consistent with a neutron star mass (HasNS) is 98%. [2] Using the masses and spins inferred from the signal, the probability of matter outside the final compact object (HasRemnant) is 7%. [2] Both HasNS and HasRemnant consider the support of several neutron star equations of state. The probability that any one of the binary components lie between 3 to 5 solar mass (HasMassgap) is 73%.\n\nThe upward revision in the HasRemnant value relative to that quoted in circular number 33891 is primarily due to an issue that was identified in the em-bright code rather than the updated choice of offline analysis settings. This issue has been fixed and does not affect any values from posterior samples reported in circulars for this event or other events in O4.\n\nFor the Bilby.offline0.multiorder.fits,0 sky map, the 90% credible region is 24534 deg2. Marginalized over the whole sky, the a posteriori luminosity distance estimate is 197 +/- 62 Mpc (a posteriori mean +/- standard deviation).\n\nFor further information about analysis methodology and the contents of this alert, refer to the LIGO/Virgo/KAGRA Public Alerts User Guide <https://emfollow.docs.ligo.org/userguide/>.\n\n\n[1] Ashton et al. ApJS 241, 27 (2019)\n[2] Chatterjee et al. The Astrophysical Journal 896, 1 (2020)\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg4NjUzMjM3LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.jdQtpjkXCKeOLcqZ12dvEqmR6YBuPqRZN36MGTCHtyA\n\n",
"published": "2023-07-06T14:20:42.977908Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-07-06T14:20:42.977926Z",
"modified": "2023-07-06T14:20:42.985424Z",
"targets": []
},
{
"id": 306,
"topic": "gcn.circular",
"uuid": "51e5c4ad-5ce5-4e72-9f88-1598fea6ddfa",
"title": "LIGO/Virgo/KAGRA S230529ay: Upper limits from a two-week IceCube neutrino search",
"submitter": "Hop gcn.circular",
"authors": "Jessie Thwaites at IceCube/U Wisc-Madison <thwaites@wisc.edu>",
"data": {
"date": "23/06/16 21:56:09 GMT",
"from": "Jessie Thwaites at IceCube/U Wisc-Madison <thwaites@wisc.edu>",
"title": "GCN CIRCULAR",
"number": "33980",
"subject": "LIGO/Virgo/KAGRA S230529ay: Upper limits from a two-week IceCube neutrino search"
},
"message_text": "IceCube Collaboration (http://icecube.wisc.edu/) reports:\n\nIceCube has performed an additional search [1] for track-like muon neutrino events consistent with the sky localization of gravitational-wave candidate S230529ay in a time range of -0.1 day, +14 days from the alert event time (2023-05-29 15:51:00.03 UTC to 2023-06-12 18:15:00.03 UTC).\n\nDuring this time period IceCube was collecting good quality data. In this case, we report a p-value of 0.38, consistent with no significant excess of track events. IceCube's sensitivity assuming an E^-2 spectrum (E^2 dN/dE) to neutrino point sources within the locations spanned by the 90% spatial containment of the 4-Update map ranges from 0.028 to 1.219 GeV cm^-2 in this time window.\n\nThe IceCube Neutrino Observatory is a cubic-kilometer neutrino detector operating at the geographic South Pole, Antarctica. The IceCube realtime alert point of contact can be reached at roc@icecube.wisc.edu.\n\n[1] Abbasi et al. Astrophys.J. 944 (2023) 1, 80\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg2OTUyNTc1LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.UseM3RYvEdtSyHyVXEgnv-Bnd-RfKXhGb9gzg2i9TEQ\n\n",
"published": "2023-06-16T21:56:20.872816Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-16T21:56:20.872837Z",
"modified": "2023-06-16T21:56:20.879672Z",
"targets": []
},
{
"id": 123,
"topic": "gcn.circular",
"uuid": "469a0d3c-a51a-45ac-b615-af468d03d413",
"title": "LIGO/Virgo/KAGRA S230529ay: Zwicky Transient Facility observations",
"submitter": "Hop gcn.circular",
"authors": "Viraj Karambelkar at Indian Inst of Tech,Bombay <karambelkarvraj21197@gmail.com>",
"data": {
"date": "23/05/31 03:32:40 GMT",
"from": "Viraj Karambelkar at Indian Inst of Tech,Bombay <karambelkarvraj21197@gmail.com>",
"title": "GCN CIRCULAR",
"number": "33900",
"subject": "LIGO/Virgo/KAGRA S230529ay: Zwicky Transient Facility observations"
},
"message_text": "Viraj Karambelkar (CIT), Tomas Ahumada (CIT), Robert Stein (CIT), Akash\nAnumarlapudi (UWM), Gaurav Waratkar (IITB), Harsh Kumar (IITB), Anirudh\nSalgundi (IITB), Vishwajeet Swain (IITB), Theophile du Laz (CIT), Igor\nAndreoni (UMD), Michael Coughlin (UMN), Mansi Kasliwal (CIT), Varun\nBhalerao (IITB), Simeon Reusch (DESY), Jannis Necker (DESY), Shreya Anand\n(CIT), Eric Bellm (UW), Brian Healy (UMN), S. B. Cenko (UMD), D. Kaplan\n(UWM), D. Perley (LJMU) report on behalf of the ZTF and GROWTH\ncollaborations:\n\n\nWe observed the localization region of the LVC trigger S230529ay as part of\nroutine Zwicky Transient Facility (ZTF; Graham et al., 2019; Bellm et al.,\n2019) survey operations. We obtained images in the r, i, and g bands\nbeginning at 2023-05-30T04:13:34.003 UT (10 hours after the LVC trigger\ntime), covering ~7% of the probability enclosed in the localization region.\n\n\nWe queried the ZTF alert stream using Kowalski (Duev et al. 2019) through\nFritz (Coughlin et al. 2023) and emgwcave (Karambelkar et al. in prep),\nAMPEL (Nordin et al. 2019), and ZTFReST (Andreoni & Coughlin et al., 2021).\nWe required at least 2 detections separated by at least 15 minutes to\nselect against moving objects. Furthermore, we cross-match our candidates\nwith the Minor Planet Center to flag known asteroids, reject stellar\nsources (Tachibana and Miller 2018), and apply machine learning algorithms\n(Mahabal et al. 2019). We require that no spatially coincident ZTF alerts\nwere issued before the detection time of the LVC trigger. We also run\nforced photometry on ZTF images (Masci et al. 2019) and ATLAS images (Tonry\net al. 2018, Smith et al. 2020) and require no detections before the LVC\ntrigger.\n\n\nOne source passed our criteria and is inside the 95% error region:\n\n|-----------------------------------------------------------------------------------------------------\n| id | alias | ra | dec | mjd |\nmag±err (ab) | filter |\n|-----------------------------------------------------------------------------------------------------\n| ZTF23aamnpce | AT2023jtt | 235.9839 | 15.2248 | 60094.23830 |\n20.49±0.23 | r |\n|-----------------------------------------------------------------------------------------------------\n\n\nAT2023jtt is 0.5\" from a galaxy that has a photometric redshift of\nphotoz=0.22±0.06 from the Legacy Survey DR8 (Duncan, 2022), suggesting that\nit is probably not associated with the LVC trigger.\n\nFurther follow-up of this localization region will continue as part of\nregular survey operations.\n\n\nZTF and GROWTH are worldwide collaborations comprising Caltech, USA; IPAC,\nUSA, WIS, Israel; OKC, Sweden; JSI/UMd, USA; U Washington, USA; DESY,\nGermany; MOST, Taiwan; UW Milwaukee, USA; LANL USA; Tokyo Tech, Japan;\nIITB, India; IIA, India; LJMU, UK; TTU, USA; SDSU, USA and USyd, Australia.\nZTF acknowledges the generous support of the NSF under AST MSIP Grant No\n1440341. GROWTH acknowledges generous support of the NSF under PIRE Grant\nNo 1545949. Alert distribution service provided by DIRAC@UW (Patterson et\nal. 2019). Alert database searches are done by AMPEL (Nordin et al. 2019)\nand Kowalski (Duev et al. 2019). GROWTH India telescope is located at the\nIndian Astronomical Observatory (Hanle), operated by the Indian Institute\nof Astrophysics (IIA). GROWTH-India project is supported by SERB and\nadministered by IUSSTF, under grant number IUSSTF/PIRE\nProgram/GROWTH/2015-16 and IUCAA.\n\n",
"published": "2023-05-31T03:32:43.072029Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-05-31T03:32:43.072051Z",
"modified": "2023-05-31T03:32:43.076722Z",
"targets": []
},
{
"id": 119,
"topic": "gcn.circular",
"uuid": "249ff524-6cba-435a-b5b8-7c22ba74919e",
"title": "LIGO/Virgo/KAGRA S230529ay: Upper limits from CALET observations.",
"submitter": "Hop gcn.circular",
"authors": "Yuta Kawakubo at Louisiana State University <kawakubo1@lsu.edu>",
"data": {
"date": "23/05/30 19:42:13 GMT",
"from": "Yuta Kawakubo at Louisiana State University <kawakubo1@lsu.edu>",
"title": "GCN CIRCULAR",
"number": "33897",
"subject": "LIGO/Virgo/KAGRA S230529ay: Upper limits from CALET observations."
},
"message_text": "S. Sugita, A. Yoshida, T. Sakamoto (AGU), Y. Kawakubo (LSU),\nK. Yamaoka (Nagoya U), S. Nakahira (JAXA), Y. Asaoka (ICRR),\nS. Torii, Y. Akaike, K. Kobayashi (Waseda U), Y. Shimizu,\nT. Tamura (Kanagawa U), N. Cannady (GSFC/UMBC),\nM. L. Cherry (LSU), S. Ricciarini (U of Florence),\nP. S. Marrocchesi (U of Siena),\nand the CALET collaboration:\n\nAt the trigger time of the compact binary merger candidate\nS230529ay T0 = 2023-05-29 18:15:00 UT (The LIGO Scientific\nCollaboration, the Virgo Collaboration, the KAGRA Collaboration,\nGCN Circ. 33889, 33891) the CALET Gamma-ray Burst Monitor\n(CGBM) high voltages were off (from T0-2 min to T0+3 min).\n\nThe CALET Calorimeter (CAL) was operating in the high energy trigger\nmode at the trigger time of S230529ay. Using the CAL data, we searched\nfor gamma-ray events in the 10-100 GeV band from -60 sec to +60 sec from\nthe GW trigger time and found no candidates in the overwrap region with the\nLVK high probability localization region. The 90% upper limit of CAL is\n1.2 x 10^-5 erg/cm^2/s (10-100 GeV) when the summed LVK probability reaches\n20%. The CAL FOV was centered at RA = 118 deg, DEC = +47 deg at T0.\n\nThe preliminary CGBM analysis for O4 events can be found here:\nhttp://cgbm.calet.jp/cgbm_trigger/O4\n\n",
"published": "2023-05-30T19:42:25.738690Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-05-30T19:42:25.738712Z",
"modified": "2023-05-30T19:42:25.746619Z",
"targets": []
},
{
"id": 118,
"topic": "gcn.circular",
"uuid": "1b098a19-40bf-4e30-8308-7cbbdd098743",
"title": "LIGO/Virgo/KAGRA S230529ay: AstroSat CZTI non-detection and upper limits",
"submitter": "Hop gcn.circular",
"authors": "Gaurav Waratkar at IIT Bombay <gauravwaratkar@iitb.ac.in>",
"data": {
"date": "23/05/30 11:47:31 GMT",
"from": "Gaurav Waratkar at IIT Bombay <gauravwaratkar@iitb.ac.in>",
"title": "GCN CIRCULAR",
"number": "33896",
"subject": "LIGO/Virgo/KAGRA S230529ay: AstroSat CZTI non-detection and upper limits"
},
"message_text": "G. Waratkar (IITB), V. Bhalerao (IITB), D. Bhattacharya (Ashoka University/IUCAA), A. R. Rao (TIFR), S. Vadawale (PRL) report on behalf of the AstroSat CZTI collaboration:\n\nWe have carried out a search for X-ray candidates in AstroSat CZTI data in a 100-sec window around the trigger time of the event S230529ay (UTC 2023-05-29 18:15:00, GraceDB event). We use the Bilby.multiorder.fits,0 map (https://gracedb.ligo.org/api/superevents/S230529ay/files/Bilby.multiorder.fits,0) for our analysis. CZTI is a coded aperture mask instrument that has a considerable effective area for about 29% of the entire sky but is also sensitive to brighter transients from the entire sky. At the time of the merger, AstroSat's nominal pointing is RA, DEC = 12:26:03.3, 33:32:18.1 (186.5138,33.5384), which is ~103 deg away from the maximum probability location, which severely reduces the effective area of CZTI. At the time of the merger event, the Earth-satellite-transient angle corresponding to the maximum probability location is ~81 deg and hence is not occulted by Earth in the satellite's frame. In a time interval of 100 sec around the event, the region of the localization map which Earth does not occult in the satellite's frame has a total probability of 0.76 (76%).\n\nCZTI data were de-trended to remove orbit-wise background variation. We then searched data from the four independent, identical quadrants for coincident spikes in the count rates. Searches were undertaken by binning the data in 0.1s, 1s, and 10s respectively. Statistical background count rate fluctuations were estimated using data from 5 preceding orbits. We selected confidence levels such that the probability of a false trigger in a 100-sec window is 10^-4. We do not find any evidence for any hard X-ray transient in this window, in the CZTI energy range of 20-200 keV.\n\nWe use a detailed mass model of the satellite to calculate the direction-dependent instrument response for points in the visible sky. We then assume the source is modeled as a power law with photon index alpha = -1, and convert our count rate upper limits to direction-dependent flux limits. We obtain the following upper limits for source flux in the 20-200 keV band by taking a probability-weighted mean over the visible sky:\n\n0.1 s: flux limit= 1.31e-05 ergs/cm^2/s; fluence limit = 1.31e-06 ergs/cm^2\n1.0 s: flux limit= 2.42e-06 ergs/cm^2/s; fluence limit = 2.42e-06 ergs/cm^2\n10.0 s: flux limit= 3.22e-07 ergs/cm^2/s; fluence limit = 3.22e-06 ergs/cm^2\n\nCZTI is built by a TIFR-led consortium of institutes across India, including VSSC, URSC, IUCAA, SAC, and PRL. The Indian Space Research Organisation funded, managed, and facilitated the project.\n\nCZTI EMGW detections are reported regularly on the payload site at:\nhttp://astrosat.iucaa.in/czti/?q=emgw\n\n",
"published": "2023-05-30T11:47:41.286272Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-05-30T11:47:41.286306Z",
"modified": "2023-05-30T11:47:41.293440Z",
"targets": []
},
{
"id": 117,
"topic": "gcn.circular",
"uuid": "6f458032-3e36-4fd8-8c82-87ff2c8f1bb5",
"title": "LIGO/Virgo S230529ay: Global MASTER-Net observations report",
"submitter": "Hop gcn.circular",
"authors": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"data": {
"date": "23/05/30 08:50:55 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "33895",
"subject": "LIGO/Virgo S230529ay: Global MASTER-Net observations report"
},
"message_text": "V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko,\nG.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin\n(Lomonosov Moscow State University, SAI, Physics Department),\n\nR. Podesta, C.Lopez, F. Podesta, C.Francile\n(Observatorio Astronomico Felix Aguilar OAFA),\n\nR. Rebolo, M. Serra\n(The Instituto de Astrofisica de Canarias),\n\nD. Buckley\n(South African Astronomical Observatory),\n\nO.A. Gres, N.M. Budnev\n(Irkutsk State University, API),\n\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez\n(INAOE, Guillermo Haro Astrophysics Observatory),\n\nA. Tlatov, D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nA. Gabovich, V.Yurkov\n(Blagoveschensk Educational State University)\n\n\nMASTER-OAFA robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Argentina (OAFA observatory of San Juan National University) started inspect of the LIGO/Virgo S230529ay errorbox 35464 sec after notice time and 35512 sec after trigger time at 2023-05-30 04:06:52 UT, with upper limit up to 20.0 mag. The observations began at zenith distance = 44 deg. The sun altitude is -79.1 deg.\n\nThe galactic latitude b = 10 deg., longitude l = 351 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/ligo_1.php?id\u0011912\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 35602 | 2023-05-30 04:06:52 | MASTER-OAFA | (19h 30m 28.49s , -54d 33m 15.6s) | C | 180 | 17.5 |\n 35782 | 2023-05-30 04:06:52 | MASTER-OAFA | (19h 30m 28.48s , -54d 33m 15.6s) | C | 540 | 17.7 | Coadd\n 35802 | 2023-05-30 04:10:11 | MASTER-OAFA | (19h 44m 00.85s , -54d 34m 42.6s) | C | 180 | 17.3 |\n 35982 | 2023-05-30 04:10:11 | MASTER-OAFA | (19h 44m 00.85s , -54d 34m 42.7s) | C | 540 | 17.1 | Coadd\n 36001 | 2023-05-30 04:13:31 | MASTER-OAFA | (19h 01m 09.49s , -56d 46m 37.5s) | C | 180 | 16.5 |\n 36201 | 2023-05-30 04:16:50 | MASTER-OAFA | (19h 15m 33.95s , -56d 48m 33.1s) | C | 180 | 16.7 |\n 36400 | 2023-05-30 04:20:10 | MASTER-OAFA | (19h 30m 28.92s , -54d 32m 13.8s) | C | 180 | 17.1 |\n 36605 | 2023-05-30 04:23:34 | MASTER-OAFA | (19h 44m 00.34s , -54d 33m 38.6s) | C | 180 | 16.1 |\n 36804 | 2023-05-30 04:26:54 | MASTER-OAFA | (19h 01m 08.06s , -56d 46m 09.6s) | C | 180 | 16.1 |\n 37004 | 2023-05-30 04:30:13 | MASTER-OAFA | (19h 15m 38.21s , -56d 47m 39.9s) | C | 180 | 15.3 |\n 37203 | 2023-05-30 04:33:33 | MASTER-OAFA | (19h 30m 23.62s , -54d 34m 09.8s) | C | 180 | 16.6 |\n 37404 | 2023-05-30 04:36:54 | MASTER-OAFA | (19h 44m 06.81s , -54d 34m 15.8s) | C | 180 | 14.3 |\n 38403 | 2023-05-30 04:53:33 | MASTER-OAFA | (19h 01m 07.43s , -56d 48m 08.9s) | C | 180 | 12.2 |\n 38583 | 2023-05-30 04:53:33 | MASTER-OAFA | (19h 01m 07.47s , -56d 48m 09.0s) | C | 540 | 17.0 | Coadd\n 38603 | 2023-05-30 04:56:52 | MASTER-OAFA | (19h 15m 38.31s , -56d 48m 36.1s) | C | 180 | 13.6 |\n 38802 | 2023-05-30 05:00:12 | MASTER-OAFA | (19h 30m 28.11s , -54d 32m 28.0s) | C | 180 | 15.6 |\n 38982 | 2023-05-30 05:00:12 | MASTER-OAFA | (19h 30m 28.13s , -54d 32m 28.0s) | C | 540 | 17.4 | Coadd\n 39002 | 2023-05-30 05:03:31 | MASTER-OAFA | (19h 44m 05.53s , -54d 34m 27.1s) | C | 180 | 16.8 |\n 39201 | 2023-05-30 05:06:51 | MASTER-OAFA | (19h 01m 14.67s , -56d 46m 26.1s) | C | 180 | 16.9 |\n 39600 | 2023-05-30 05:13:30 | MASTER-OAFA | (19h 30m 26.22s , -54d 32m 07.7s) | C | 180 | 17.4 |\n 39800 | 2023-05-30 05:16:49 | MASTER-OAFA | (19h 44m 09.80s , -54d 33m 33.8s) | C | 180 | 18.4 |\n 40000 | 2023-05-30 05:20:09 | MASTER-OAFA | (19h 01m 09.23s , -56d 48m 12.2s) | C | 180 | 17.0 |\n 40199 | 2023-05-30 05:23:28 | MASTER-OAFA | (19h 15m 39.38s , -56d 48m 21.4s) | C | 180 | 17.5 |\n 40379 | 2023-05-30 05:23:28 | MASTER-OAFA | (19h 15m 39.38s , -56d 48m 21.3s) | C | 540 | 18.0 | Coadd\n 40439 | 2023-05-30 05:27:29 | MASTER-OAFA | (19h 30m 29.31s , -54d 34m 02.2s) | C | 180 | 17.3 |\n 40459 | 2023-05-30 05:27:48 | MASTER-OAFA | (19h 01m 10.37s , -56d 46m 13.3s) | C | 180 | 17.9 |\n 40658 | 2023-05-30 05:31:08 | MASTER-OAFA | (19h 15m 40.91s , -56d 47m 41.2s) | C | 180 | 18.0 |\n 40858 | 2023-05-30 05:34:27 | MASTER-OAFA | (18h 44m 35.92s , -54d 32m 44.0s) | C | 180 | 18.4 |\n 41107 | 2023-05-30 05:38:37 | MASTER-OAFA | (18h 58m 10.02s , -54d 31m 38.1s) | C | 180 | 17.6 |\n 41127 | 2023-05-30 05:38:56 | MASTER-OAFA | (19h 44m 10.12s , -54d 32m 51.9s) | C | 180 | 17.1 |\n 41347 | 2023-05-30 05:42:36 | MASTER-OAFA | (19h 01m 10.04s , -56d 47m 16.0s) | C | 180 | 17.4 |\n 41566 | 2023-05-30 05:46:16 | MASTER-OAFA | (19h 15m 36.26s , -56d 46m 41.8s) | C | 180 | 15.8 |\n 41869 | 2023-05-30 05:51:19 | MASTER-OAFA | (18h 44m 30.25s , -54d 30m 46.4s) | C | 180 | 16.1 |\n 42049 | 2023-05-30 05:51:19 | MASTER-OAFA | (18h 44m 30.24s , -54d 30m 46.4s) | C | 540 | 18.3 | Coadd\n 42124 | 2023-05-30 05:55:34 | MASTER-OAFA | (18h 58m 06.98s , -54d 31m 10.7s) | C | 180 | 17.7 |\n 42304 | 2023-05-30 05:55:34 | MASTER-OAFA | (18h 58m 06.96s , -54d 31m 10.7s) | C | 540 | 19.0 | Coadd\n 42344 | 2023-05-30 05:59:13 | MASTER-OAFA | (19h 30m 33.38s , -54d 33m 08.8s) | C | 180 | 16.5 |\n 42564 | 2023-05-30 06:02:54 | MASTER-OAFA | (19h 44m 05.20s , -54d 34m 32.2s) | C | 180 | 17.8 |\n 42955 | 2023-05-30 06:09:24 | MASTER-OAFA | (19h 01m 18.55s , -56d 48m 07.4s) | C | 180 | 16.9 |\n 43020 | 2023-05-30 06:10:30 | MASTER-OAFA | (18h 44m 35.08s , -54d 32m 23.2s) | C | 180 | 17.5 |\n 43239 | 2023-05-30 06:14:09 | MASTER-OAFA | (18h 58m 14.61s , -54d 31m 13.0s) | C | 180 | 18.6 |\n 43459 | 2023-05-30 06:17:48 | MASTER-OAFA | (18h 44m 33.23s , -54d 30m 50.7s) | C | 180 | 18.6 |\n 43678 | 2023-05-30 06:21:28 | MASTER-OAFA | (18h 58m 15.00s , -54d 32m 15.5s) | C | 180 | 18.7 |\n 43944 | 2023-05-30 06:25:54 | MASTER-OAFA | (18h 44m 39.81s , -54d 31m 52.1s) | C | 180 | 18.7 |\n 44124 | 2023-05-30 06:25:54 | MASTER-OAFA | (18h 44m 39.81s , -54d 31m 52.1s) | C | 540 | 19.3 | Coadd\n 44164 | 2023-05-30 06:29:33 | MASTER-OAFA | (18h 58m 10.72s , -54d 33m 09.7s) | C | 180 | 18.7 |\n 44344 | 2023-05-30 06:29:33 | MASTER-OAFA | (18h 58m 10.72s , -54d 33m 09.7s) | C | 540 | 19.4 | Coadd\n 44383 | 2023-05-30 06:33:13 | MASTER-OAFA | (18h 44m 39.91s , -54d 32m 09.9s) | C | 180 | 18.8 |\n 44603 | 2023-05-30 06:36:52 | MASTER-OAFA | (18h 58m 14.62s , -54d 31m 16.5s) | C | 180 | 18.8 |\n 44822 | 2023-05-30 06:40:31 | MASTER-OAFA | (18h 44m 38.06s , -54d 32m 26.4s) | C | 180 | 18.8 |\n 45087 | 2023-05-30 06:44:56 | MASTER-OAFA | (18h 58m 11.48s , -54d 30m 50.1s) | C | 180 | 18.8 |\n 45306 | 2023-05-30 06:48:36 | MASTER-OAFA | (18h 44m 41.94s , -54d 31m 29.9s) | C | 180 | 18.9 |\n 45526 | 2023-05-30 06:52:15 | MASTER-OAFA | (18h 58m 12.89s , -54d 32m 53.1s) | C | 180 | 18.9 |\n 45745 | 2023-05-30 06:55:55 | MASTER-OAFA | (18h 44m 43.01s , -54d 32m 04.3s) | C | 180 | 18.9 |\n 45965 | 2023-05-30 06:59:35 | MASTER-OAFA | (18h 58m 16.26s , -54d 31m 06.3s) | C | 180 | 18.9 |\n 46185 | 2023-05-30 07:03:14 | MASTER-OAFA | (21h 07m 49.25s , -43d 19m 29.1s) | C | 180 | 19.0 |\n 46365 | 2023-05-30 07:03:14 | MASTER-OAFA | (21h 07m 49.24s , -43d 19m 29.1s) | C | 540 | 19.7 | Coadd\n 46412 | 2023-05-30 07:07:01 | MASTER-OAFA | (21h 18m 37.52s , -43d 20m 22.6s) | C | 180 | 19.1 |\n 46592 | 2023-05-30 07:07:01 | MASTER-OAFA | (21h 18m 37.52s , -43d 20m 22.6s) | C | 540 | 19.8 | Coadd\n 46632 | 2023-05-30 07:10:41 | MASTER-OAFA | (21h 05m 33.17s , -47d 50m 06.3s) | C | 180 | 19.2 |\n 46812 | 2023-05-30 07:10:41 | MASTER-OAFA | (21h 05m 33.17s , -47d 50m 06.3s) | C | 540 | 19.9 | Coadd\n 46851 | 2023-05-30 07:14:21 | MASTER-OAFA | (21h 17m 14.87s , -47d 51m 22.5s) | C | 180 | 19.1 |\n 47031 | 2023-05-30 07:14:21 | MASTER-OAFA | (21h 17m 14.88s , -47d 51m 22.5s) | C | 540 | 19.9 | Coadd\n 47071 | 2023-05-30 07:18:01 | MASTER-OAFA | (21h 07m 49.44s , -43d 20m 57.2s) | C | 180 | 19.2 |\n 47291 | 2023-05-30 07:21:40 | MASTER-OAFA | (21h 18m 41.65s , -43d 19m 49.5s) | C | 180 | 19.1 |\n 47510 | 2023-05-30 07:25:20 | MASTER-OAFA | (21h 05m 30.21s , -47d 50m 58.9s) | C | 180 | 19.2 |\n 47730 | 2023-05-30 07:29:00 | MASTER-OAFA | (21h 17m 21.25s , -47d 49m 32.0s) | C | 180 | 19.1 |\n 47955 | 2023-05-30 07:32:44 | MASTER-OAFA | (21h 07m 44.55s , -43d 20m 09.8s) | C | 180 | 19.3 |\n 48178 | 2023-05-30 07:36:28 | MASTER-OAFA | (21h 18m 38.89s , -43d 19m 23.4s) | C | 180 | 19.1 |\n 48382 | 2023-05-30 07:39:51 | MASTER-OAFA | (21h 05m 34.34s , -47d 50m 09.6s) | C | 180 | 19.2 |\n 48581 | 2023-05-30 07:43:11 | MASTER-OAFA | (21h 17m 15.72s , -47d 51m 25.2s) | C | 180 | 19.2 |\n 48810 | 2023-05-30 07:47:00 | MASTER-OAFA | (21h 07m 47.95s , -43d 19m 33.3s) | C | 180 | 19.3 |\n 48990 | 2023-05-30 07:47:00 | MASTER-OAFA | (21h 07m 47.95s , -43d 19m 33.3s) | C | 540 | 20.0 | Coadd\n 49030 | 2023-05-30 07:50:39 | MASTER-OAFA | (21h 18m 42.68s , -43d 21m 22.8s) | C | 180 | 19.2 |\n 49210 | 2023-05-30 07:50:39 | MASTER-OAFA | (21h 18m 42.68s , -43d 21m 22.9s) | C | 540 | 19.9 | Coadd\n 49249 | 2023-05-30 07:54:19 | MASTER-OAFA | (21h 05m 27.48s , -47d 50m 12.3s) | C | 180 | 19.2 |\n 49456 | 2023-05-30 07:57:45 | MASTER-OAFA | (21h 17m 16.41s , -47d 49m 26.9s) | C | 180 | 19.3 |\n 49655 | 2023-05-30 08:01:05 | MASTER-OAFA | (21h 07m 51.38s , -43d 20m 14.2s) | C | 180 | 19.3 |\n 49855 | 2023-05-30 08:04:24 | MASTER-OAFA | (21h 18m 40.24s , -43d 21m 27.2s) | C | 180 | 19.2 |\n 50054 | 2023-05-30 08:07:44 | MASTER-OAFA | (21h 05m 34.85s , -47d 51m 06.0s) | C | 180 | 19.1 |\n 50254 | 2023-05-30 08:11:03 | MASTER-OAFA | (21h 17m 20.16s , -47d 49m 32.0s) | C | 180 | 18.3 |\n 50473 | 2023-05-30 08:14:43 | MASTER-OAFA | (21h 07m 48.91s , -43d 21m 05.2s) | C | 180 | 19.2 |\n 50693 | 2023-05-30 08:18:22 | MASTER-OAFA | (21h 18m 46.84s , -43d 19m 37.9s) | C | 180 | 19.1 |\n 50919 | 2023-05-30 08:22:09 | MASTER-OAFA | (17h 58m 36.70s , -30d 31m 04.3s) | C | 180 | 16.2 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n",
"published": "2023-05-30T08:51:03.888378Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-05-30T08:51:03.888401Z",
"modified": "2023-05-30T08:51:03.895512Z",
"targets": []
},
{
"id": 116,
"topic": "gcn.circular",
"uuid": "917e2495-3ecd-4bef-8c4f-346bcad37d5e",
"title": "LIGO/Virgo/KAGRA S230529ay: upper limits from AGILE/MCAL",
"submitter": "Hop gcn.circular",
"authors": "Francesco Verrecchia at SSDC,INAF-OAR <francesco.verrecchia@ssdc.asi.it>",
"data": {
"date": "23/05/30 08:00:31 GMT",
"from": "Francesco Verrecchia at SSDC,INAF-OAR <francesco.verrecchia@ssdc.asi.it>",
"title": "GCN CIRCULAR",
"number": "33894",
"subject": "LIGO/Virgo/KAGRA S230529ay: upper limits from AGILE/MCAL"
},
"message_text": "F. Longo (Univ. Trieste, and INFN Trieste), M. Tavani (INAF/IAPS,\nand Univ. Roma Tor Vergata), F. Verrecchia, C. Pittori (SSDC, and\nINAF/OAR), M. Cardillo, C. Casentini, L. Foffano, G. Piano (INAF/IAPS),\nA. Ursi (ASI and INAF/IAPS), F. Lucarelli (SSDC, and INAF/OAR),\nL. Baroncelli, A. Bulgarelli, A. Ciabattoni, A. Di Piano, V.\nFioretti, G. Panebianco, N. Parmiggiani (INAF/OAS-Bologna), M.\nPilia (INAF/OA-Cagliari), report on behalf of the AGILE Team:\n\nIn response to the LIGO/Virgo/KAGRA GW event S230529y at\nT0 = 2023-05-29 18:15:00.89 (UT), a preliminary analysis of the\nAGILE minicalorimeter (MCAL) triggered data found no event candidates\nwithin a time interval covering -/+ 15 sec from the LIGO/Virgo/KAGRA T0.\n\nAt the T0, about 60% of the S230529y 90% c.l. localization region\nwas accessible to the AGILE/MCAL.\n\nThree-sigma upper limits (ULs) are obtained for a 1 s integration\ntime at different celestial positions within the accessible S230529y\nlocalization region in the energy range 0.4-1 MeV, from a minimum\nof 1.5E-06 erg cm^-2 to a maximum of 3.1E-06 erg cm^-2 (assuming as\nspectral model a single power-law with photon index 1.5).\n\nAn independent procedure based on photon counting statistics provides\nUL fluences in the same band, from a minimum of 1.1E-08 erg cm^-2\nto a maximum of 2.1E-08 erg cm^-2.\n\nThe AGILE/MCAL detector is a CsI detector with a 4 pi FoV, sensitive\nin the energy range 0.4-100 MeV. Additional analysis of AGILE data\nis in progress.\n\n",
"published": "2023-05-30T08:00:40.745660Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-05-30T08:00:40.745681Z",
"modified": "2023-05-30T08:00:40.752036Z",
"targets": []
},
{
"id": 115,
"topic": "gcn.circular",
"uuid": "95424ed6-aa85-4adf-9a25-1a1bca7167fe",
"title": "LIGO/Virgo/KAGRA S230529ay: Coverage and upper limits from MAXI/GSC observations",
"submitter": "Hop gcn.circular",
"authors": "Motoko Serino at Aoyama Gakuin U. <serino@phys.aoyama.ac.jp>",
"data": {
"date": "23/05/30 05:13:28 GMT",
"from": "Motoko Serino at Aoyama Gakuin U. <serino@phys.aoyama.ac.jp>",
"title": "GCN CIRCULAR",
"number": "33893",
"subject": "LIGO/Virgo/KAGRA S230529ay: Coverage and upper limits from MAXI/GSC observations"
},
"message_text": "S. Sugita, M. Serino (AGU),\nH. Negoro (Nihon U.),\nN. Kawai (RIKEN),\nM. Nakajima, K. Kobayashi, M. Tanaka, Y. Soejima, Y. Kudo (Nihon U.),\nT. Mihara, T. Kawamuro, S. Yamada, T. Tamagawa, M. Matsuoka (RIKEN),\nT. Sakamoto, H. Hiramatsu, H. Nishikawa, A. Yoshida (AGU),\nY. Tsuboi, S. Urabe, S. Nawa, N. Nemoto (Chuo U.),\nM. Shidatsu (Ehime U.),\nI. Takahashi, M. Niwano, S. Sato, N. Higuchi, Y. Yatsu (Tokyo Tech),\nS. Nakahira, S. Ueno, H. Tomida, M. Ishikawa, S. Ogawa, T. Kurihara (JAXA),\nY. Ueda, K. Setoguchi, T. Yoshitake, Y. Nakatani (Kyoto U.),\nM. Yamauchi, Y. Hagiwara, Y. Umeki, Y. Otsuki (Miyazaki U.),\nK. Yamaoka (Nagoya U.),\nY. Kawakubo (LSU),\nM. Sugizaki (NAOC),\nW. Iwakiri (Chiba U.)\nreport on behalf of the MAXI team:\n\nWe examined MAXI/GSC all-sky X-ray images (2-20 keV)\nafter the compact binary merger candidate S230529ay at 2023-05-29 18:15:00.746 UTC (GCN 33889).\n\nAt the trigger time of S230529ay, the high-voltage of MAXI/GSC was off\nThe first one-orbit (92 min) scan observation with GSC after the event covered 91%\nof the 90% credible region of the Bilby skymap (GCN 33891) from 18:31:41 to 19:40:39 UTC (T0+1001 to T0+5139 sec).\n\nNo significant new source was found in the region in the one-orbit scan observation.\nA typical 1-sigma averaged upper limit obtained in one scan observation\nis 20 mCrab at 2-20 keV.\n\nIf you require information about X-ray flux by MAXI/GSC at specific coordinates,\nplease contact the submitter of this circular by email.\n\n",
"published": "2023-05-30T05:13:36.251141Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-05-30T05:13:36.251162Z",
"modified": "2023-05-30T05:13:36.257395Z",
"targets": []
},
{
"id": 114,
"topic": "gcn.circular",
"uuid": "f2a50fca-3cac-4c54-8471-cec7cd4a4e1c",
"title": "LIGO/Virgo/KAGRA S230529ay: Upper limits from Fermi-GBM Observations",
"submitter": "Hop gcn.circular",
"authors": "Stephen Lesage at Fermi-GBM Team <sjl0014@uah.edu>",
"data": {
"date": "23/05/30 01:55:30 GMT",
"from": "Stephen Lesage at Fermi-GBM Team <sjl0014@uah.edu>",
"title": "GCN CIRCULAR",
"number": "33892",
"subject": "LIGO/Virgo/KAGRA S230529ay: Upper limits from Fermi-GBM Observations"
},
"message_text": "S. Lesage (UAH) reports on behalf of the Fermi-GBM Team and the GBM-LIGO/Virgo/KAGRA group\n\nFor S230529ay (GCN 33889 and GCN 33891) and using the Bilby skymap, Fermi-GBM was observing 60.7% of the localization probability at event time.\n\nThere was no Fermi-GBM onboard trigger around the event time of the LIGO/Virgo/KAGRA (LVK) detection of GW trigger S230529ay. An automated, blind search for short gamma-ray bursts below the onboard triggering threshold in Fermi-GBM also identified no counterpart candidates. The GBM targeted search, the most sensitive, coherent search for GRB-like signals, was run from +/-30 s around merger time, and also identified no counterpart candidates.\n\nPart of the LVK localization region is behind the Earth for Fermi, located at an RA1.5, Dec#.9 with a radius of 67.6 degrees. We therefore set upper limits on impulsive gamma-ray emission for the GW localization region visible to Fermi at merger time. Using the representative soft, normal, and hard GRB-like templates described in arXiv:1612.02395, we set the following 3 sigma flux upper limits over 10-1000 keV, weighted by GW localization probability (in units of 10^-7 erg/s/cm^2):\n\nTimescale Soft Normal Hard\n------------------------------------\n0.128 s: 1.2 1.9 3.5\n1.024 s: 0.5 0.7 1.2\n8.192 s: 0.2 0.2 0.4\n\nAssuming the median luminosity distance of 200.6 Mpc from the GW detection, we estimate the following intrinsic luminosity upper limits over the 1 keV-10 MeV energy range (in units of 10^50 erg/s):\n\nTimescale Soft Normal Hard\n------------------------------------\n0.128s: 0.009 0.013 0.039\n1.024s: 0.003 0.005 0.013\n8.192s: 0.001 0.002 0.005\n\n",
"published": "2023-05-30T01:55:39.553047Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-05-30T01:55:39.553068Z",
"modified": "2023-05-30T01:55:39.559630Z",
"targets": []
},
{
"id": 113,
"topic": "gcn.circular",
"uuid": "8893843b-07a2-44ae-a5b5-4df25a2a917b",
"title": "LIGO/Virgo/KAGRA S230529ay: Updated Sky localization and EM Bright Classification",
"submitter": "Hop gcn.circular",
"authors": "J. L. Wright at Australian National University <jennifer.wright@anu.edu.au>",
"data": {
"date": "23/05/29 20:03:57 GMT",
"from": "J. L. Wright at Australian National University <jennifer.wright@anu.edu.au>",
"title": "GCN CIRCULAR",
"number": "33891",
"subject": "LIGO/Virgo/KAGRA S230529ay: Updated Sky localization and EM Bright Classification"
},
"message_text": "The LIGO Scientific Collaboration, the Virgo Collaboration, and the\nKAGRA Collaboration report:\n\nWe have conducted further analysis of the LIGO Livingston Observatory\n(L1) data around the time of the compact binary merger (CBC) candidate\nS230529ay (GCN Circular 33889).\nParameter estimation has been performed using Bilby [1] and a new sky\nmap, Bilby.multiorder.fits,0, distributed via GCN Notice, is available\nfor retrieval from the GraceDB event page:\n\nhttps://gracedb.ligo.org/superevents/S230529ay\n\nBased on posterior support from parameter estimation [1], under the\nassumption that the candidate S230529ay is astrophysical in origin,the\nprobability that the lighter compact object is consistent with a\nneutron star mass (HasNS) is 98%. [2] Using the masses and spins\ninferred from the signal, the probability of matter outside the final\ncompact object (HasRemnant) is 1%. [2] Both HasNS and HasRemnant\nconsider the support of several neutron star equations of state. The\nprobability that any one of the binary components lie between 3 to 5\nsolar mass (HasMassgap) is 69%.\n\nFor the Bilby.multiorder.fits,0 sky map, the 90% credible region is\n25623 deg2. Marginalized over the whole sky, the a posteriori\nluminosity distance estimate is 201 +/- 63 Mpc (a posteriori mean +/-\nstandard deviation).\n\nFor further information about analysis methodology and the contents of\nthis alert, refer to the LIGO/Virgo/KAGRA Public Alerts User Guide\n<https://emfollow.docs.ligo.org/userguide/>.\n\n\n [1] Ashton et al. ApJS 241, 27 (2019)\n [2] Chatterjee et al. The Astrophysical Journal 896, 1 (2020)\n\n",
"published": "2023-05-29T20:04:05.856187Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-05-29T20:04:05.856223Z",
"modified": "2023-05-29T20:04:05.863455Z",
"targets": []
},
{
"id": 112,
"topic": "gcn.circular",
"uuid": "37d855f1-b009-479d-bd98-2a6f6aae55b4",
"title": "LIGO/Virgo/KAGRA S230529ay: No counterpart candidates in INTEGRAL SPI-ACS prompt observation",
"submitter": "Hop gcn.circular",
"authors": "Volodymyr Savchenko at ISDC, University of Geneva; LASTRO, EPFL <volodymyr.savchenko@unige.ch>",
"data": {
"date": "23/05/29 19:14:52 GMT",
"from": "Volodymyr Savchenko at ISDC, University of Geneva; LASTRO, EPFL <volodymyr.savchenko@unige.ch>",
"title": "GCN CIRCULAR",
"number": "33890",
"subject": "LIGO/Virgo/KAGRA S230529ay: No counterpart candidates in INTEGRAL SPI-ACS prompt observation"
},
"message_text": "V. Savchenko, C. Ferrigno (ISDC/UniGE, Switzerland)\nJ. Rodi (IAPS-Roma, Italy)\nA. Coleiro (APC, France)\nS. Mereghetti (INAF IASF-Milano, Italy)\n\non behalf of the INTEGRAL multi-messenger collaboration:\nhttps://www.astro.unige.ch/cdci/integral-multimessenger-collaboration\n\nUsing INTEGRAL/SPI-ACS realtime data (following [1]) we have performed\na search for a prompt gamma-ray counterpart of S230529ay (GCN 33889).\n\nAt the time of the event (2023-05-29 18:15:00 UTC, hereafter T0),\nINTEGRAL was operating in nominal mode. The peak of the event\nlocalization probability was at an angle of 122 deg with respect to\nthe spacecraft pointing axis. This orientation implies strongly\nsuppressed (2.8% of optimal) response of ISGRI, somewhat suppressed\n(57% of optimal) response of IBIS/Veto, and somewhat suppressed (47%\nof optimal) response of SPI-ACS.\n\nThe background within +/-300 seconds around the event was somewhat\nunstable (excess variance 1.8).\nIn addition, we note that excess noise at near Hz frequency has been noted\nin SPI-ACS data in recent days, related to satellite environment conditions.\n\nWe have performed a search for any impulsive events in INTEGRAL SPI-\nACS (as described in [2]) data.\n\nWe do not detect any significant counterparts and estimate a 3-sigma\nupper limit on the 75-2000 keV fluence of 3.4e-07 erg/cm^2 (within the\n50% probability containment region of the source localization) for a\nburst lasting less than 1 s with a characteristic short GRB spectrum\n(an exponentially cut off power law with alpha=-0.5 and Ep`0 keV)\noccurring at any time in the interval within 300 s around T0. For a\ntypical long GRB spectrum (Band function with alpha=-1, beta=-2.5, and\nEp00 keV), the derived peak flux upper limit is ~3.2e-07 (8e-08)\nerg/cm^2/s at 1 s (8 s) time scale in 75-2000 keV energy range.\n\nFor the mean reported distance 217.0 Mpc this corresponds to the limit\non the total isotropic equivalent energy in 1 s of 1.9e+48 erg for\nthe short GRB spectrum and for a long GRB spectrum isotropic\nequivalent luminosity in 1 s (8 s) of 9.4e+47 erg/s (4.5e+47 erg/s)\n\nWe report for completeness and in order of FAP, all excesses\nidentified in the search region. We find: 4 likely background\nexcesses:\n\nT-T0 | scale | S/N | luminosity ( x 1e+48 erg/s) | FAP\n262 | 1.7 | 4.7 | 33.8 +/- 8.3 +/- 30.4 | 0.276\n-12.1 | 0.45 | 3.1 | 3.87 +/- 1.62 +/- 3.48 | 0.498\n-6.59 | 0.1 | 3.3 | 8.42 +/- 3.46 +/- 7.58 | 0.728\n-91.3 | 0.95 | 3.5 | 3.07 +/- 1.11 +/- 2.76 | 0.756\n\nNote that FAP estimates (especially at timescales above 2s) may be\npossibly further affected by enhanced non-stationary local background\nnoise. This list excludes any excesses for which FAP is close to\nunity.\n\n\n\nAll results quoted are preliminary.\n\nThis circular is an official product of the INTEGRAL Multi-Messenger\nteam.\n\nNote that we send GCNs Circulars only when one of the following\nconditions is met: merger contains at least one neutron star, a\nsignificant counterpart is reported.\n\n[1] Savchenko et al. 2017, A&A 603, A46\n[2] Savchenko et al. 2012, A&A 541A, 122S\n\n",
"published": "2023-05-29T19:15:02.123294Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-05-29T19:15:02.123364Z",
"modified": "2023-05-29T19:15:02.130829Z",
"targets": []
},
{
"id": 111,
"topic": "gcn.circular",
"uuid": "e8a0a53d-f5f1-4f2c-9d28-a64d595a83ef",
"title": "LIGO/Virgo/KAGRA S230529ay: Identification of a GW compact binary merger candidate",
"submitter": "Hop gcn.circular",
"authors": "J. L. Wright at Australian National University <jennifer.wright@anu.edu.au>",
"data": {
"date": "23/05/29 18:36:00 GMT",
"from": "J. L. Wright at Australian National University <jennifer.wright@anu.edu.au>",
"title": "GCN CIRCULAR",
"number": "33889",
"subject": "LIGO/Virgo/KAGRA S230529ay: Identification of a GW compact binary merger candidate"
},
"message_text": "The LIGO Scientific Collaboration, the Virgo Collaboration, and the\nKAGRA Collaboration report:\n\nWe identified the compact binary merger candidate S230529ay during\nreal-time processing of data from LIGO Livingston Observatory (L1) at\n2023-05-29 18:15:00.746 UTC (GPS time: 1369419318.746). The candidate\nwas found by the GstLAL [1] and PyCBC Live [2] analysis pipelines.\n\nS230529ay is an event of interest because its false alarm rate, as\nestimated by the online analysis, is 2e-10 Hz, or about one in 1e2\nyears. The event's properties can be found at this URL:\n\nhttps://gracedb.ligo.org/superevents/S230529ay\n\nThe classification of the GW signal, in order of descending\nprobability is NSBH (62%), BNS (31%), Terrestrial (7%), or BBH (<1%).\n\nAssuming the candidate is astrophysical in origin, the probability\nthat the lighter compact object is consistent with a neutron star mass\n(HasNS) is >99%. [3] Using the masses and spins inferred from the\nsignal, the probability of matter outside the final compact object\n(HasRemnant) is 12%. [3] Both HasNS and HasRemnant consider the\nsupport of several neutron star equations of state. The probability\nthat any one of the binary components lie between 3 to 5 solar mass\n(HasMassgap) is 98%.\n\nTwo sky maps are available at this time and can be retrieved from the\nGraceDB event page:\n * bayestar.multiorder.fits,0, an initial localization generated by\nBAYESTAR [4], distributed via GCN notice about 25 seconds after the\ncandidate event time.\n * bayestar.multiorder.fits,1, an initial localization generated by\nBAYESTAR [4], distributed via GCN notice about 5 minutes after the\ncandidate event time.\n\nThe preferred sky map at this time is bayestar.multiorder.fits,1. For\nthe bayestar.multiorder.fits,1 sky map, the 90% credible region is\nwell fit by an ellipse with an area of 31171 deg2 described by the\nfollowing DS9 region (right ascension, declination, semi-major axis,\nsemi-minor axis, position angle of the semi-minor axis):\n icrs; ellipse(00h00m, +00d00m, 163.70d, 97.20d, 147.56d)\nMarginalized over the whole sky, the a posteriori luminosity distance\nestimate is 217 +/- 71 Mpc (a posteriori mean +/- standard deviation).\n\nFor further information about analysis methodology and the contents of\nthis alert, refer to the LIGO/Virgo/KAGRA Public Alerts User Guide\n<https://emfollow.docs.ligo.org/userguide/>.\n\n [1] Tsukada et al. arXiv:2305.06286 (2023) and Ewing et al. arXiv:2305.05625 (2023)\n [2] Dal Canton et al. ApJ 923, 254 (2021)\n [3] Chatterjee et al. The Astrophysical Journal 896, 1 (2020)\n [4] Singer & Price PRD 93, 024013 (2016)\n\n",
"published": "2023-05-29T18:36:12.673072Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-05-29T18:36:12.673093Z",
"modified": "2023-05-29T18:36:12.678159Z",
"targets": []
}
]
},
{
"event_id": "S230527c",
"sequences": [],
"references": [
{
"id": 698,
"topic": "gcn.circular",
"uuid": "b5ffb71d-0969-4127-85fd-59452b490cab",
"title": "LIGO/Virgo/KAGRA S230527c: No counterpart candidates in INTEGRAL SPI-ACS prompt observation",
"submitter": "Hop gcn.circular",
"authors": "Volodymyr Savchenko at ISDC, University of Geneva; LASTRO, EPFL <volodymyr.savchenko@unige.ch>",
"data": {
"date": "23/06/27 21:17:53 GMT",
"from": "Volodymyr Savchenko at ISDC, University of Geneva; LASTRO, EPFL <volodymyr.savchenko@unige.ch>",
"title": "GCN CIRCULAR",
"number": "34097",
"subject": "LIGO/Virgo/KAGRA S230527c: No counterpart candidates in INTEGRAL SPI-ACS prompt observation"
},
"message_text": "V. Savchenko, C. Ferrigno (ISDC/UniGE, Switzerland)\nJ. Rodi (IAPS-Roma, Italy)\nA. Coleiro (APC, France)\nS. Mereghetti (INAF IASF-Milano, Italy)\n\non behalf of the INTEGRAL multi-messenger collaboration:\nhttps://www.astro.unige.ch/cdci/integral-multimessenger-collaboration\n\nUsing INTEGRAL/SPI-ACS realtime data (following [1]) we have performed a search for a prompt gamma-ray counterpart of S230527c (GCN 34086).\n\nAt the time of the event (2023-06-27 01:53:37 UTC, hereafter T0), INTEGRAL was operating in nominal mode. The peak of the event\nlocalization probability was at an angle of 94 deg with respect to the spacecraft pointing axis. This orientation implies strongly suppressed (8.9% of optimal) response of ISGRI, strongly suppressed (28% of optimal) response of IBIS/Veto, and near-optimal (81% of optimal) response of SPI-ACS.\n\nThe background within +/-300 seconds around the event was very stable (excess variance 1.2).\n\nWe have performed a search for any impulsive events in INTEGRAL SPI-ACS (as described in [2]) data.\n\nWe do not detect any significant counterparts and estimate a 3-sigma upper limit on the 75-2000 keV fluence of 1.8e-07 erg/cm^2 (within the 50% probability containment region of the source localization) for a burst lasting less than 1 s with a characteristic short GRB spectrum (an exponentially cut off power law with alpha=-0.5 and Ep`0 keV) occurring at any time in the interval within 300 s around T0. For a typical long GRB spectrum (Band function with alpha=-1, beta=-2.5, and Ep00 keV), the derived peak flux upper limit is ~1.6e-07 (5.5e-08) erg/cm^2/s at 1 s (8 s) time scale in 75-2000 keV energy range.\n\nWe report for completeness and in order of FAP, all excesses identified in the search region. We find: 1 tentatively associated\nexcess:\n\nT-T0 | scale | S/N | flux ( x 1e-06 erg/cm2/s) | FAP\n-0.221 | 2.4 | 3.4 | 1.38 +/- 0.347 +/- 0.328 | 0.00943\n\n3 likely background excesses:\n\nT-T0 | scale | S/N | flux ( x 1e-06 erg/cm2/s) | FAP\n-24.6 | 0.4 | 3.6 | 3.49 +/- 0.855 +/- 0.829 | 0.349\n-56.4 | 1 | 3.3 | 2.04 +/- 0.538 +/- 0.485 | 0.643\n277 | 0.7 | 4.7 | 3.42 +/- 0.646 +/- 0.814 | 0.728\n\nNote that FAP estimates (especially at timescales above 2s) may be possibly further affected by enhanced non-stationary local background noise. This list excludes any excesses for which FAP is close to unity.\n\nWe note that no independent IBAS alerts happened in the vicinity.\n\nSPI-ACS data can be retrieved in MMODA with this link:\nhttps://www.astro.unige.ch/mmoda/?DEC=-29.74516667&RA&5.97845833&T1 23-06-27T01%3A48%3A37.000&T2 23-06-27T01%3A58%3A37.000&T_format=isot&data_level=ordinary&instrument=spi_acs&product_type=spi_acs_lc&query_status=new&query_type=Real&time_bin=2&time_bin_format=sec\n\nINTEGRAL follow-up alert was distributed to SCIMMA through HERMES few minutes after the trigger GCN:\nhttps://hermes.lco.global/message/cc05ca0b-1c31-444d-a809-900ec95c4690\n\nAll results quoted are preliminary.\n\nThis circular is an official product of the INTEGRAL Multi-Messenger team.\n\nNote that we send GCNs Circulars only when one of the following conditions is met: merger contains at least one neutron star, a\nsingificant counterpart is reported.\n\n[1] Savchenko et al. 2017, A&A 603, A46\n[2] Savchenko et al. 2012, A&A 541A, 122S\n\nGCN pipeline version: local\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg3OTAwNjc5LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.UurtsoqDpiIkVb5N1V5NCE9cpezxIhXKnMjJgTfF_L0\n\n",
"published": "2023-06-27T21:18:05.207381Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-27T21:18:05.207401Z",
"modified": "2023-06-27T21:18:05.215056Z",
"targets": []
},
{
"id": 121,
"topic": "gcn.circular",
"uuid": "619765d3-4f94-4cf5-8e46-ec4a10a238de",
"title": "LIGO/Virgo/KAGRA S230527ch: Zwicky Transient Facility observations",
"submitter": "Hop gcn.circular",
"authors": "Viraj Karambelkar at Indian Inst of Tech,Bombay <karambelkarvraj21197@gmail.com>",
"data": {
"date": "23/05/31 03:32:27 GMT",
"from": "Viraj Karambelkar at Indian Inst of Tech,Bombay <karambelkarvraj21197@gmail.com>",
"title": "GCN CIRCULAR",
"number": "33898",
"subject": "LIGO/Virgo/KAGRA S230527ch: Zwicky Transient Facility observations"
},
"message_text": "Akash Anumarlapudi (UWM), Tomas Ahumada (CIT), Viraj Karambelkar (CIT),\nRobert Stein (CIT), Gaurav Waratkar (IITB), Anirudh Salgundi (IITB),\nVishwajeet Swain (IITB), Theophile du Laz (CIT), Igor Andreoni (UMD),\nMichael Coughlin (UMN), Mansi Kasliwal (CIT), Varun Bhalerao (IITB), Simeon\nReusch (DESY), Jannis Necker (DESY), Shreya Anand (CIT), Eric Bellm (UW),\nD. Perley (LJMU), D. Kaplan (UWM), S.B. Cenko (UMD) report on behalf of the\nZTF and GROWTH collaborations:\n\n\nWe observed the localization region of LVC trigger S230527ch as part of\nroutine Zwicky Transient Facility (ZTF; Graham et al., 2019; Bellm et al.,\n2019) survey operations. We obtained images in the r, i, and g bands\nbeginning at ~9 hours after the burst trigger time and covering ~20% of the\nprobability enclosed in the localization region (18 % with galactic\nlatitude |b|>10, 2 % with |b|<10).\n\n\nWe queried the ZTF alert stream using Kowalski (Duev et al. 2019) through\nFritz (Coughlin et al. 2023) and emgwcave (Karambelkar et al. in prep),\nAMPEL (Nordin et al. 2019), and ZTFReST (Andreoni & Coughlin et al., 2021).\nWe required at least 2 detections separated by at least 15 minutes to\nselect against moving objects. Furthermore, we cross-match our candidates\nwith the Minor Planet Center to flag known asteroids, reject stellar\nsources (Tachibana and Miller 2018), and apply machine learning algorithms\n(Mahabal et al. 2019). We require that no spatially coincident ZTF alerts\nwere issued before the detection time of the LVC trigger. We also run\nforced photometry on ZTF images (Masci et al. 2019) and ATLAS images (Tonry\net al. 2018, Smith et al. 2020) and require no detections before the LVC\ntrigger.\n\n\nTwo sources passed our criteria and are inside the 95% error region:\n\n|-----------------------------------------------------------------------------------------------------\n| id | alias | ra | dec | mjd\n | mag±err (ab) | filter | comments |\n|-----------------------------------------------------------------------------------------------------------------\n| ZTF23aamnsjs | AT2023jtu | 280.2040 | -20.6598 |\n60094.23830 | 19.20±0.14 | r |\n| ZTF23aamdode | AT2023jpc | 257.1902 | 8.9143 |\n60092.3303 | 17.83±0.01 | r | likely a CV based on spectrum |\n|----------------------------------------------------------------------------------------------------------------\n\nWe obtained a spectrum of AT2023jpc with the SEDM spectrograph on the\n60-inch telescope at Palomar Observatory (Blagorodnova et al. 2017). The\nspectrum shows a blue, featureless continuum indicating that this transient\nis a cataclysmic variable (CV).\n\nFurther follow-up of this localization region will continue as part of\nregular survey operations.\n\n\nZTF and GROWTH are worldwide collaborations comprising Caltech, USA; IPAC,\nUSA, WIS, Israel; OKC, Sweden; JSI/UMd, USA; U Washington, USA; DESY,\nGermany; MOST, Taiwan; UW Milwaukee, USA; LANL USA; Tokyo Tech, Japan;\nIITB, India; IIA, India; LJMU, UK; TTU, USA; SDSU, USA and USyd, Australia.\nZTF acknowledges the generous support of the NSF under AST MSIP Grant No\n1440341. GROWTH acknowledges generous support of the NSF under PIRE Grant\nNo 1545949. Alert distribution service provided by DIRAC@UW (Patterson et\nal. 2019). Alert database searches are done by AMPEL (Nordin et al. 2019)\nand Kowalski (Duev et al. 2019). GROWTH India telescope is located at the\nIndian Astronomical Observatory (Hanle), operated by the Indian Institute\nof Astrophysics (IIA). GROWTH-India project is supported by SERB and\nadministered by IUSSTF, under grant number IUSSTF/PIRE\nProgram/GROWTH/2015-16 and IUCAA.\n\n",
"published": "2023-05-31T03:32:35.998556Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-05-31T03:32:35.998577Z",
"modified": "2023-05-31T03:32:36.011606Z",
"targets": []
}
]
},
{
"event_id": "S230531f",
"sequences": [],
"references": [
{
"id": 125,
"topic": "gcn.circular",
"uuid": "c428eeaf-c276-4a36-abc9-b7eebb095a80",
"title": "LIGO/Virgo S230531f: Global MASTER-Net observations report",
"submitter": "Hop gcn.circular",
"authors": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"data": {
"date": "23/05/31 06:24:44 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "33902",
"subject": "LIGO/Virgo S230531f: Global MASTER-Net observations report"
},
"message_text": "V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko,\nG.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin\n(Lomonosov Moscow State University, SAI, Physics Department),\n\nR. Podesta, C.Lopez, F. Podesta, C.Francile\n(Observatorio Astronomico Felix Aguilar OAFA),\n\nR. Rebolo, M. Serra\n(The Instituto de Astrofisica de Canarias),\n\nD. Buckley\n(South African Astronomical Observatory),\n\nO.A. Gres, N.M. Budnev\n(Irkutsk State University, API),\n\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez\n(INAOE, Guillermo Haro Astrophysics Observatory),\n\nA. Tlatov, D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nA. Gabovich, V.Yurkov\n(Blagoveschensk Educational State University)\n\n\nMASTER-OAFA robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Argentina (OAFA observatory of San Juan National University) started inspect of the LIGO/Virgo S230531f errorbox 18909 sec after notice time and 19920 sec after trigger time at 2023-05-31 05:53:25 UT, with upper limit up to 17.4 mag. The observations began at zenith distance = 47 deg. The sun altitude is -69.7 deg.\n\nThe galactic latitude b = 21 deg., longitude l = 158 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/ligo_1.php?id\u0011920\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 20010 | 2023-05-31 05:53:25 | MASTER-OAFA | (21h 47m 17.84s , -50d 05m 55.5s) | C | 180 | 17.4 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n",
"published": "2023-05-31T06:24:49.565820Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-05-31T06:24:49.565842Z",
"modified": "2023-05-31T06:24:49.571057Z",
"targets": []
}
]
},
{
"event_id": "S230601bf",
"sequences": [
{
"id": 29,
"sequence_number": 1,
"sequence_type": "PRELIMINARY",
"message": {
"id": 126,
"topic": "igwn.gwalert",
"uuid": "7fda973d-4441-47b8-b7bb-f88e1aef6a23",
"title": "S230601bf - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230601bf/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230601bf/view/"
},
"event": {
"far": 7.823133868916789e-09,
"time": "2023-06-01T22:41:34.096Z",
"group": "CBC",
"search": "AllSky",
"area_50": 797.9584331845172,
"area_90": 2965.2244485310525,
"duration": null,
"pipeline": "gstlal",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.0016666666666666666,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": true,
"skymap_hash": "84e63b32046e1965f56bf53bbfc3ba28",
"classification": {
"BBH": 0.994389357818161,
"BNS": 1.4784633358368251e-33,
"NSBH": 1.159482883595884e-31,
"Terrestrial": 0.005610642181839043
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-06-01T22:42:04Z",
"superevent_id": "S230601bf",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-01T22:42:06.119877Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-01T22:42:06.119923Z",
"modified": "2023-06-01T22:42:06.127248Z"
}
},
{
"id": 30,
"sequence_number": 2,
"sequence_type": "PRELIMINARY",
"message": {
"id": 127,
"topic": "igwn.gwalert",
"uuid": "e8298f79-eab4-4ed8-871c-f46b1dfd4021",
"title": "S230601bf - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230601bf/files/bayestar.multiorder.fits,1",
"gracedb": "https://gracedb.ligo.org/superevents/S230601bf/view/"
},
"event": {
"far": 1.713566498778526e-15,
"time": "2023-06-01T22:41:34.096Z",
"group": "CBC",
"search": "AllSky",
"area_50": 633.666702134431,
"area_90": 2108.305636770451,
"duration": null,
"pipeline": "spiir",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.0022222222222222222,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": true,
"skymap_hash": "2a555e98e82ca325aa3234b4cd65ec2b",
"classification": {
"BBH": 0.9999999935572232,
"BNS": 0.0,
"NSBH": 0.0,
"Terrestrial": 6.442776756543367e-09
},
"skymap_version": 1,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-06-01T22:46:48Z",
"superevent_id": "S230601bf",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-01T22:46:49.963882Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-01T22:46:49.963920Z",
"modified": "2023-06-01T22:46:49.969305Z"
}
},
{
"id": 31,
"sequence_number": 3,
"sequence_type": "INITIAL",
"message": {
"id": 129,
"topic": "igwn.gwalert",
"uuid": "eeec3695-502e-41a9-b5a6-d632877e8b57",
"title": "S230601bf - INITIAL",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230601bf/files/bayestar.multiorder.fits,1",
"gracedb": "https://gracedb.ligo.org/superevents/S230601bf/view/"
},
"event": {
"far": 1.713566498778526e-15,
"time": "2023-06-01T22:41:34.096Z",
"group": "CBC",
"search": "AllSky",
"area_50": 633.666702134431,
"area_90": 2108.305636770451,
"duration": null,
"pipeline": "spiir",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.0022222222222222222,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": true,
"skymap_hash": "2a555e98e82ca325aa3234b4cd65ec2b",
"classification": {
"BBH": 0.9999999935572232,
"BNS": 0.0,
"NSBH": 0.0,
"Terrestrial": 6.442776756543367e-09
},
"skymap_version": 1,
"central_frequency": null
},
"alert_type": "INITIAL",
"sequence_num": 3,
"time_created": "2023-06-01T23:08:49Z",
"superevent_id": "S230601bf",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-01T23:08:50.576435Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-01T23:08:50.576473Z",
"modified": "2023-06-01T23:08:50.581882Z"
}
},
{
"id": 41,
"sequence_number": 4,
"sequence_type": "UPDATE",
"message": {
"id": 157,
"topic": "igwn.gwalert",
"uuid": "8f180c0c-649a-4e4e-b035-a885bc81d562",
"title": "S230601bf - UPDATE",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230601bf/files/bayestar.multiorder.fits,2",
"gracedb": "https://gracedb.ligo.org/superevents/S230601bf/view/"
},
"event": {
"far": 1.713566498778526e-15,
"time": "2023-06-01T22:41:34.096Z",
"group": "CBC",
"search": "AllSky",
"area_50": 902.8701388359129,
"area_90": 2530.050693489063,
"duration": null,
"pipeline": "spiir",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.0,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": true,
"skymap_hash": "71f7ede34d664f2ea0c9f91c3f0354f4",
"classification": {
"BBH": 0.9999999935572232,
"BNS": 0.0,
"NSBH": 0.0,
"Terrestrial": 6.442776756543367e-09
},
"skymap_version": 2,
"central_frequency": null
},
"alert_type": "UPDATE",
"sequence_num": 4,
"time_created": "2023-06-05T16:41:40Z",
"superevent_id": "S230601bf",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-05T16:41:41.720280Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-05T16:41:41.720303Z",
"modified": "2023-06-05T16:41:41.726843Z"
}
}
],
"references": []
},
{
"event_id": "S230601b",
"sequences": [],
"references": [
{
"id": 158,
"topic": "gcn.circular",
"uuid": "0a0452dd-670c-427a-8d47-9400e8910019",
"title": "LIGO/Virgo/KAGRA S230601bf: Updated Sky localization",
"submitter": "Hop gcn.circular",
"authors": "Sylvia Biscoveanu at MIT <sylvia.biscoveanu@ligo.org>",
"data": {
"date": "23/06/05 16:54:29 GMT",
"from": "Sylvia Biscoveanu at MIT <sylvia.biscoveanu@ligo.org>",
"title": "GCN CIRCULAR",
"number": "33917",
"subject": "LIGO/Virgo/KAGRA S230601bf: Updated Sky localization"
},
"message_text": "The LIGO Scientific Collaboration, the Virgo Collaboration, and the KAGRA Collaboration report:\n\nWe have conducted further analysis of the LIGO Hanford Observatory (H1) and LIGO Livingston Observatory (L1) data around the time of the compact binary merger (CBC) candidate S230601bf (GCN Circular 33903). Parameter estimation has been performed using Bilby [1] and a new sky map, Bilby.offline0.multiorder.fits,0, distributed via GCN Notice, is available for retrieval from the GraceDB event page:\n\nhttps://gracedb.ligo.org/superevents/S230601bf\n\nFor the Bilby.offline0.multiorder.fits,0 sky map, the 90% credible region is 2531 deg2. Marginalized over the whole sky, the a posteriori luminosity distance estimate is 3565 +/- 1260 Mpc (a posteriori mean +/- standard deviation).\n\nFor further information about analysis methodology and the contents of this alert, refer to the LIGO/Virgo/KAGRA Public Alerts User Guide <https://emfollow.docs.ligo.org/userguide/>.\n\n\n [1] Ashton et al. ApJS 241, 27 (2019)\n\n",
"published": "2023-06-05T16:54:41.628814Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-05T16:54:41.628834Z",
"modified": "2023-06-05T16:54:41.633846Z",
"targets": []
},
{
"id": 131,
"topic": "gcn.circular",
"uuid": "7f4deff2-a564-429f-9e22-eee2905fe8e4",
"title": "LIGO/Virgo S230601bf: Global MASTER-Net observations report",
"submitter": "Hop gcn.circular",
"authors": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"data": {
"date": "23/06/02 13:46:39 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "33904",
"subject": "LIGO/Virgo S230601bf: Global MASTER-Net observations report"
},
"message_text": "V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko,\nG.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin\n(Lomonosov Moscow State University, SAI, Physics Department),\n\nR. Podesta, C.Lopez, F. Podesta, C.Francile\n(Observatorio Astronomico Felix Aguilar OAFA),\n\nR. Rebolo, M. Serra\n(The Instituto de Astrofisica de Canarias),\n\nD. Buckley\n(South African Astronomical Observatory),\n\nO.A. Gres, N.M. Budnev\n(Irkutsk State University, API),\n\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez\n(INAOE, Guillermo Haro Astrophysics Observatory),\n\nA. Tlatov, D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nA. Gabovich, V.Yurkov\n(Blagoveschensk Educational State University)\n\n\nMASTER-SAAO robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in South Africa (South African Astronomical Observatory) started inspect of the LIGO/Virgo S230601bf errorbox 86 sec after trigger time at 2023-06-01 22:43:00 UT, with upper limit up to 19.5 mag. The observations began at zenith distance = 45 deg. The sun altitude is -80.0 deg.\n\nMASTER-OAFA robotic telescope located in Argentina (OAFA observatory of San Juan National University) started inspect of the LIGO/Virgo S230601bf errorbox 543 sec after trigger time at 2023-06-01 22:50:37 UT, with upper limit up to 16.9 mag. Observations started at twilight. The observations began at zenith distance = 73 deg. The sun altitude is -14.9 deg.\n\nThe galactic latitude b = 19 deg., longitude l = 197 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/ligo_1.php?id\u0011922\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 92 | 2023-06-01 22:43:00 | MASTER-SAAO | (20h 25m 56.59s , -39d 52m 05.8s) | C | 10 | 17.2 |\n 117 | 2023-06-01 22:43:00 | MASTER-SAAO | (20h 25m 56.59s , -39d 52m 05.8s) | C | 60 | 18.4 | Coadd\n 92 | 2023-06-01 22:43:00 | MASTER-SAAO | (20h 24m 51.97s , -39d 51m 33.9s) | C | 10 | 17.3 |\n 117 | 2023-06-01 22:43:00 | MASTER-SAAO | (20h 24m 51.97s , -39d 51m 33.9s) | C | 60 | 18.4 | Coadd\n 126 | 2023-06-01 22:43:29 | MASTER-SAAO | (20h 26m 02.38s , -39d 51m 46.0s) | C | 20 | 17.7 |\n 126 | 2023-06-01 22:43:29 | MASTER-SAAO | (20h 24m 57.73s , -39d 51m 14.1s) | C | 20 | 17.7 |\n 182 | 2023-06-01 22:44:20 | MASTER-SAAO | (20h 25m 59.84s , -39d 50m 18.5s) | C | 30 | 17.9 |\n 182 | 2023-06-01 22:44:20 | MASTER-SAAO | (20h 24m 55.25s , -39d 49m 46.7s) | C | 30 | 18.0 |\n 236 | 2023-06-01 22:45:10 | MASTER-SAAO | (20h 25m 59.76s , -39d 51m 50.8s) | C | 40 | 18.1 |\n 296 | 2023-06-01 22:45:10 | MASTER-SAAO | (20h 25m 59.76s , -39d 51m 50.8s) | C | 160 | 19.0 | Coadd\n 236 | 2023-06-01 22:45:10 | MASTER-SAAO | (20h 24m 55.12s , -39d 51m 18.1s) | C | 40 | 18.2 |\n 296 | 2023-06-01 22:45:10 | MASTER-SAAO | (20h 24m 55.12s , -39d 51m 18.2s) | C | 160 | 19.1 | Coadd\n 301 | 2023-06-01 22:46:09 | MASTER-SAAO | (20h 26m 02.28s , -39d 50m 14.3s) | C | 50 | 18.1 |\n 301 | 2023-06-01 22:46:09 | MASTER-SAAO | (20h 24m 57.64s , -39d 49m 42.0s) | C | 50 | 18.3 |\n 392 | 2023-06-01 22:47:30 | MASTER-SAAO | (20h 25m 57.11s , -39d 51m 06.3s) | C | 70 | 18.4 |\n 392 | 2023-06-01 22:47:30 | MASTER-SAAO | (20h 24m 52.44s , -39d 50m 32.7s) | C | 70 | 18.5 |\n 503 | 2023-06-01 22:49:11 | MASTER-SAAO | (20h 24m 51.59s , -39d 49m 33.4s) | C | 90 | 18.7 |\n 503 | 2023-06-01 22:49:11 | MASTER-SAAO | (20h 25m 56.26s , -39d 50m 07.1s) | C | 90 | 18.6 |\n 628 | 2023-06-01 22:49:11 | MASTER-SAAO | (20h 24m 51.59s , -39d 49m 33.3s) | C | 340 | 19.4 | Coadd\n 628 | 2023-06-01 22:49:11 | MASTER-SAAO | (20h 25m 56.26s , -39d 50m 07.0s) | C | 340 | 19.5 | Coadd\n 598 | 2023-06-01 22:50:37 | MASTER-OAFA | (07h 28m 41.32s , +23d 12m 59.6s) | C | 110 | 16.2 |\n 748 | 2023-06-01 22:50:37 | MASTER-OAFA | (07h 28m 41.33s , +23d 12m 59.5s) | C | 410 | 16.9 | Coadd\n 623 | 2023-06-01 22:51:01 | MASTER-SAAO | (20h 26m 02.23s , -39d 51m 08.2s) | C | 110 | 18.6 |\n 623 | 2023-06-01 22:51:01 | MASTER-SAAO | (20h 24m 57.50s , -39d 50m 33.1s) | C | 110 | 18.7 |\n 750 | 2023-06-01 22:52:58 | MASTER-OAFA | (07h 28m 46.73s , +23d 13m 32.6s) | C | 130 | 16.1 |\n 779 | 2023-06-01 22:53:23 | MASTER-SAAO | (20h 25m 55.86s , -39d 52m 09.6s) | C | 140 | 18.7 |\n 779 | 2023-06-01 22:53:23 | MASTER-SAAO | (20h 24m 51.07s , -39d 51m 33.1s) | C | 140 | 18.8 |\n 931 | 2023-06-01 22:55:39 | MASTER-OAFA | (07h 28m 44.45s , +23d 14m 48.4s) | C | 170 | 16.6 |\n 1138 | 2023-06-01 22:59:01 | MASTER-OAFA | (07h 28m 44.40s , +23d 13m 39.6s) | C | 180 | 16.5 |\n 2232 | 2023-06-01 23:17:15 | MASTER-OAFA | (07h 28m 43.73s , +23d 14m 28.1s) | C | 180 | 15.8 |\n 2443 | 2023-06-01 23:20:46 | MASTER-OAFA | (07h 28m 43.70s , +23d 13m 13.2s) | C | 180 | 16.0 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n",
"published": "2023-06-02T13:46:46.991458Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-02T13:46:46.991480Z",
"modified": "2023-06-02T13:46:46.998868Z",
"targets": []
},
{
"id": 130,
"topic": "gcn.circular",
"uuid": "78699e81-1c9e-4df7-859e-5a9340b2a644",
"title": "LIGO/Virgo/KAGRA S230601bf: Identification of a GW compact binary merger candidate",
"submitter": "Hop gcn.circular",
"authors": "S. P. Stevenson at Swinburne University of Technology <simon.stevenson@ligo.org>",
"data": {
"date": "23/06/01 23:28:00 GMT",
"from": "S. P. Stevenson at Swinburne University of Technology <simon.stevenson@ligo.org>",
"title": "GCN CIRCULAR",
"number": "33903",
"subject": "LIGO/Virgo/KAGRA S230601bf: Identification of a GW compact binary merger candidate"
},
"message_text": "The LIGO Scientific Collaboration, the Virgo Collaboration, and the\nKAGRA Collaboration report:\n\nWe identified the compact binary merger candidate S230601bf during\nreal-time processing of data from LIGO Hanford Observatory (H1) and\nLIGO Livingston Observatory (L1) at 2023-06-01 22:41:34.101 UTC (GPS\ntime: 1369694512.101). The candidate was found by the CWB [1], MBTA\n[2], GstLAL [3], oLIB [4], PyCBC Live [5], and SPIIR [6] analysis\npipelines.\n\nS230601bf is an event of interest because its false alarm rate, as\nestimated by the online analysis, is 1.7e-15 Hz, or about one in 1e7\nyears. The event's properties can be found at this URL:\n\nhttps://gracedb.ligo.org/superevents/S230601bf\n\nThe classification of the GW signal, in order of descending\nprobability, is BBH (>99%), Terrestrial (<1%), BNS (<1%), or NSBH\n(<1%).\n\nAssuming the candidate is astrophysical in origin, the probability\nthat the lighter compact object is consistent with a neutron star mass\n(HasNS) is <1%. [7] Using the masses and spins inferred from the\nsignal, the probability of matter outside the final compact object\n(HasRemnant) is <1%. [7] Both HasNS and HasRemnant consider the\nsupport of several neutron star equations of state. The probability\nthat any one of the binary components lie between 3 to 5 solar mass\n(HasMassgap) is <1%.\n\nTwo sky maps are available at this time and can be retrieved from the\nGraceDB event page:\n * bayestar.multiorder.fits,0, an initial localization generated by\nBAYESTAR [8], distributed via GCN notice about 31 seconds after the\ncandidate event time.\n * bayestar.multiorder.fits,1, an initial localization generated by\nBAYESTAR [8], distributed via GCN notice about 5 minutes after the\ncandidate event time.\n\nThe preferred sky map at this time is bayestar.multiorder.fits,1. For\nthe bayestar.multiorder.fits,1 sky map, the 90% credible region is\n2109 deg2. Marginalized over the whole sky, the a posteriori\nluminosity distance estimate is 3578 +/- 998 Mpc (a posteriori mean\n+/- standard deviation).\n\nFor further information about analysis methodology and the contents of\nthis alert, refer to the LIGO/Virgo/KAGRA Public Alerts User Guide\n<https://emfollow.docs.ligo.org/userguide/>.\n\n [1] Klimenko et al. PRD 93, 042004 (2016)\n [2] Aubin et al. CQG 38, 095004 (2021)\n [3] Tsukada et al. arXiv:2305.06286 (2023) and Ewing et al. arXiv:2305.05625 (2023)\n [4] Lynch et al. PRD 95, 104046 (2017)\n [5] Dal Canton et al. ApJ 923, 254 (2021)\n [6] Chu et al. PRD 105, 024023 (2022)\n [7] Chatterjee et al. The Astrophysical Journal 896, 54 (2020)\n [8] Singer & Price PRD 93, 024013 (2016)\n\n",
"published": "2023-06-01T23:28:13.323557Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-01T23:28:13.323577Z",
"modified": "2023-06-01T23:28:13.328720Z",
"targets": []
}
]
},
{
"event_id": "S230602ap",
"sequences": [
{
"id": 32,
"sequence_number": 1,
"sequence_type": "PRELIMINARY",
"message": {
"id": 134,
"topic": "igwn.gwalert",
"uuid": "5d1cd20d-99b4-4980-a6eb-0f466492d1ed",
"title": "S230602ap - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230602ap/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230602ap/view/"
},
"event": {
"far": 1.48135e-06,
"time": "2023-06-02T18:40:16.676Z",
"group": "Burst",
"search": "AllSky",
"area_50": 375.16425940939166,
"area_90": 1300.0658564320977,
"duration": 0.035156,
"pipeline": "CWB",
"properties": {},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "125fdd996d673615049fb2fe3a7e0359",
"classification": {},
"skymap_version": 0,
"central_frequency": 305.918823
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-06-02T18:46:54Z",
"superevent_id": "S230602ap",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-02T18:46:55.642654Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-02T18:46:55.642677Z",
"modified": "2023-06-02T18:46:55.648690Z"
}
},
{
"id": 33,
"sequence_number": 2,
"sequence_type": "PRELIMINARY",
"message": {
"id": 135,
"topic": "igwn.gwalert",
"uuid": "e748e3af-8414-4b7f-8070-9be61fb4d723",
"title": "S230602ap - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230602ap/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230602ap/view/"
},
"event": {
"far": 1.48135e-06,
"time": "2023-06-02T18:40:16.676Z",
"group": "Burst",
"search": "AllSky",
"area_50": 375.16425940939166,
"area_90": 1300.0658564320977,
"duration": 0.035156,
"pipeline": "CWB",
"properties": {},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "125fdd996d673615049fb2fe3a7e0359",
"classification": {},
"skymap_version": 0,
"central_frequency": 305.918823
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-06-02T18:51:28Z",
"superevent_id": "S230602ap",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-02T18:51:29.330985Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-02T18:51:29.331008Z",
"modified": "2023-06-02T18:51:29.335948Z"
}
}
],
"references": []
},
{
"event_id": "S230603aa",
"sequences": [
{
"id": 34,
"sequence_number": 1,
"sequence_type": "PRELIMINARY",
"message": {
"id": 138,
"topic": "igwn.gwalert",
"uuid": "fcee3a47-695d-49c6-8922-34a2777c420d",
"title": "S230603aa - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230603aa/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230603aa/view/"
},
"event": {
"far": 1.154570459497884e-06,
"time": "2023-06-03T07:34:45.081Z",
"group": "CBC",
"search": "AllSky",
"area_50": 867.6198057370439,
"area_90": 3565.319404857037,
"duration": null,
"pipeline": "pycbc",
"properties": {
"HasNS": 1.0,
"HasMassGap": 0.000689655172413793,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "7e29fdec84eaf30fe0e83c6996753fad",
"classification": {
"BBH": 0.005404270988081028,
"BNS": 0.0,
"NSBH": 0.02586428498974366,
"Terrestrial": 0.9687314440221753
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-06-03T07:35:11Z",
"superevent_id": "S230603aa",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-03T07:35:12.008487Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-03T07:35:12.008512Z",
"modified": "2023-06-03T07:35:12.017071Z"
}
},
{
"id": 35,
"sequence_number": 2,
"sequence_type": "PRELIMINARY",
"message": {
"id": 139,
"topic": "igwn.gwalert",
"uuid": "96aabc2d-3ffc-4398-81c2-de189246f819",
"title": "S230603aa - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230603aa/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230603aa/view/"
},
"event": {
"far": 1.154570459497884e-06,
"time": "2023-06-03T07:34:45.081Z",
"group": "CBC",
"search": "AllSky",
"area_50": 867.6198057370439,
"area_90": 3565.319404857037,
"duration": null,
"pipeline": "pycbc",
"properties": {
"HasNS": 1.0,
"HasMassGap": 0.000689655172413793,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "7e29fdec84eaf30fe0e83c6996753fad",
"classification": {
"BBH": 0.005404270988081028,
"BNS": 0.0,
"NSBH": 0.02586428498974366,
"Terrestrial": 0.9687314440221753
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-06-03T07:39:46Z",
"superevent_id": "S230603aa",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-03T07:39:47.817820Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-03T07:39:47.817847Z",
"modified": "2023-06-03T07:39:47.822369Z"
}
}
],
"references": []
},
{
"event_id": "S230602a",
"sequences": [],
"references": [
{
"id": 179,
"topic": "gcn.circular",
"uuid": "f2ff527e-3c56-43a0-8f9a-697d450391b6",
"title": "LIGO/Virgo/KAGRA S230602ap: Zwicky Transient Facility observations",
"submitter": "Hop gcn.circular",
"authors": "Tomas Ahumada at Caltech <tahumada@umd.edu>",
"data": {
"date": "23/06/06 16:26:09 GMT",
"from": "Tomas Ahumada at Caltech <tahumada@umd.edu>",
"title": "GCN CIRCULAR",
"number": "33929",
"subject": "LIGO/Virgo/KAGRA S230602ap: Zwicky Transient Facility observations"
},
"message_text": "Tomas Ahumada (CIT), Gaurav Waratkar (IITB), Viraj Karambelkar (CIT), Robert Stein (CIT), Anirudh Salgundi (IITB), Vishwajeet Swain (IITB), Theophile du Laz (CIT), Igor Andreoni (UMD), Michael Coughlin (UMN), Mansi Kasliwal (CIT), Varun Bhalerao (IITB), Simeon Reusch (DESY), Jannis Necker (DESY), Shreya Anand (CIT), Eric Bellm (UW), S.B. Cenko (UMD), D. Perley (LJMU), D. Kaplan (UWM), K-Ryan Hinds (LJMU) report on behalf of the ZTF and GROWTH collaborations:\n\nWe observed the localization region of LVC trigger S230602ap as part of routine Zwicky Transient Facility (ZTF; Graham et al., 2019; Bellm et al., 2019) survey operations. We obtained images in the r, i, and g bands beginning at 2023-06-03T03:58:31.996 (9 hours after the burst trigger time) corresponding to ~7% of the probability enclosed in the localization region.\n\nWe queried the ZTF alert stream using Kowalski (Duev et al. 2019) through Fritz (Coughlin et al. 2023) and emgwcave (Karambelkar et al. in prep), AMPEL (Nordin et al. 2019), and ZTFReST (Andreoni & Coughlin et al., 2021). We required at least 2 detections separated by at least 15 minutes to select against moving objects. Furthermore, we cross-match our candidates with the Minor Planet Center to flag known asteroids, reject stellar sources (Tachibana and Miller 2018), and apply machine learning algorithms (Mahabal et al. 2019). We require that no spatially coincident ZTF alerts were issued before the detection time of the LVC trigger. We also run forced photometry on ZTF images (Masci et al. 2019) and ATLAS images (Tonry et al. 2018, Smith et al. 2020) and require no detections before the LVC trigger.\n\nWe do not identify any sources that pass our selection criteria.\n\nFurther follow-up of this localization region will continue as part of regular survey operations.\n\nZTF and GROWTH are worldwide collaborations comprising Caltech, USA; IPAC, USA, WIS, Israel; OKC, Sweden; JSI/UMd, USA; U Washington, USA; DESY, Germany; MOST, Taiwan; UW Milwaukee, USA; LANL USA; Tokyo Tech, Japan; IITB, India; IIA, India; LJMU, UK; TTU, USA; SDSU, USA and USyd, Australia. ZTF acknowledges the generous support of the NSF under AST MSIP Grant No 1440341. GROWTH acknowledges generous support of the NSF under PIRE Grant No 1545949. Alert distribution service provided by DIRAC@UW (Patterson et al. 2019). Alert database searches are done by AMPEL (Nordin et al. 2019) and Kowalski (Duev et al. 2019). GROWTH India telescope is located at the Indian Astronomical Observatory (Hanle), operated by the Indian Institute of Astrophysics (IIA). GROWTH-India project is supported by SERB and administered by IUSSTF, under grant number IUSSTF/PIRE Program/GROWTH/2015-16 and IUCAA.\n\n",
"published": "2023-06-06T16:26:18.025574Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-06T16:26:18.025613Z",
"modified": "2023-06-06T16:26:18.043866Z",
"targets": []
},
{
"id": 141,
"topic": "gcn.circular",
"uuid": "d6ee79ce-b9c1-4644-a74e-07d6496cc13c",
"title": "LIGO/Virgo S230602ap: Global MASTER-Net observations report",
"submitter": "Hop gcn.circular",
"authors": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"data": {
"date": "23/06/03 07:48:43 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "33908",
"subject": "LIGO/Virgo S230602ap: Global MASTER-Net observations report"
},
"message_text": "V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko,\nG.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin\n(Lomonosov Moscow State University, SAI, Physics Department),\n\nR. Podesta, C.Lopez, F. Podesta, C.Francile\n(Observatorio Astronomico Felix Aguilar OAFA),\n\nR. Rebolo, M. Serra\n(The Instituto de Astrofisica de Canarias),\n\nD. Buckley\n(South African Astronomical Observatory),\n\nO.A. Gres, N.M. Budnev\n(Irkutsk State University, API),\n\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez\n(INAOE, Guillermo Haro Astrophysics Observatory),\n\nA. Tlatov, D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nA. Gabovich, V.Yurkov\n(Blagoveschensk Educational State University)\n\n\nMASTER-OAFA robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Argentina (OAFA observatory of San Juan National University) started inspect of the LIGO/Virgo S230602ap errorbox 46171 sec after notice time and 46590 sec after trigger time at 2023-06-03 07:36:46 UT, with upper limit up to 16.3 mag. The observations began at zenith distance = 80 deg. The sun altitude is -48.2 deg.\n\nThe galactic latitude b = -1 deg., longitude l = 120 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/ligo_1.php?id\u0011926\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 46601 | 2023-06-03 07:36:46 | MASTER-OAFA | (17h 16m 22.77s , +41d 22m 00.9s) | C | 20 | 15.9 |\n 46657 | 2023-06-03 07:37:38 | MASTER-OAFA | (17h 16m 20.68s , +41d 23m 37.1s) | C | 30 | 16.0 |\n 46723 | 2023-06-03 07:38:39 | MASTER-OAFA | (17h 16m 20.54s , +41d 22m 11.6s) | C | 40 | 16.3 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n",
"published": "2023-06-03T07:48:52.441658Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-03T07:48:52.441678Z",
"modified": "2023-06-03T07:48:52.446620Z",
"targets": []
}
]
},
{
"event_id": "S230603a",
"sequences": [],
"references": [
{
"id": 142,
"topic": "gcn.circular",
"uuid": "2dd684f0-ac7e-44df-b552-f1d92fb12305",
"title": "LIGO/Virgo S230603aa: Global MASTER-Net observations report",
"submitter": "Hop gcn.circular",
"authors": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"data": {
"date": "23/06/03 07:48:51 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "33909",
"subject": "LIGO/Virgo S230603aa: Global MASTER-Net observations report"
},
"message_text": "V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko,\nG.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin\n(Lomonosov Moscow State University, SAI, Physics Department),\n\nR. Podesta, C.Lopez, F. Podesta, C.Francile\n(Observatorio Astronomico Felix Aguilar OAFA),\n\nR. Rebolo, M. Serra\n(The Instituto de Astrofisica de Canarias),\n\nD. Buckley\n(South African Astronomical Observatory),\n\nO.A. Gres, N.M. Budnev\n(Irkutsk State University, API),\n\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez\n(INAOE, Guillermo Haro Astrophysics Observatory),\n\nA. Tlatov, D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nA. Gabovich, V.Yurkov\n(Blagoveschensk Educational State University)\n\n\nMASTER-OAFA robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Argentina (OAFA observatory of San Juan National University) started inspect of the LIGO/Virgo S230603aa errorbox 52 sec after notice time and 121 sec after trigger time at 2023-06-03 07:36:46 UT, with upper limit up to 16.3 mag. The observations began at zenith distance = 80 deg. The sun altitude is -48.2 deg.\n\nThe galactic latitude b = 34 deg., longitude l = 66 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/ligo_1.php?id\u0011930\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 132 | 2023-06-03 07:36:46 | MASTER-OAFA | (17h 16m 22.77s , +41d 22m 00.9s) | C | 20 | 15.9 |\n 188 | 2023-06-03 07:37:38 | MASTER-OAFA | (17h 16m 20.68s , +41d 23m 37.1s) | C | 30 | 16.0 |\n 254 | 2023-06-03 07:38:39 | MASTER-OAFA | (17h 16m 20.54s , +41d 22m 11.6s) | C | 40 | 16.3 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n",
"published": "2023-06-03T07:48:54.487587Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-03T07:48:54.487625Z",
"modified": "2023-06-03T07:48:54.492959Z",
"targets": []
}
]
},
{
"event_id": "S230604z",
"sequences": [
{
"id": 36,
"sequence_number": 1,
"sequence_type": "PRELIMINARY",
"message": {
"id": 145,
"topic": "igwn.gwalert",
"uuid": "c898a88f-ff5e-46de-83c1-a8ef8989ece1",
"title": "S230604z - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230604z/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230604z/view/"
},
"event": {
"far": 2.693441465960436e-07,
"time": "2023-06-04T09:20:31.321Z",
"group": "CBC",
"search": "AllSky",
"area_50": 287.3007059263476,
"area_90": 2480.952015244209,
"duration": null,
"pipeline": "gstlal",
"properties": {
"HasNS": 0.5941427725688592,
"HasMassGap": 0.01661064425770308,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "057ad1c642ee72f1219ebd38dd8a5528",
"classification": {
"BBH": 0.7061956992397619,
"BNS": 3.6054262797413515e-19,
"NSBH": 0.0423002585795029,
"Terrestrial": 0.2515040421807352
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-06-04T09:21:10Z",
"superevent_id": "S230604z",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-04T09:21:11.556648Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-04T09:21:11.556672Z",
"modified": "2023-06-04T09:21:11.564338Z"
}
},
{
"id": 37,
"sequence_number": 2,
"sequence_type": "PRELIMINARY",
"message": {
"id": 146,
"topic": "igwn.gwalert",
"uuid": "34bcf6b6-aa8a-4a36-b8da-53118dc9736e",
"title": "S230604z - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230604z/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230604z/view/"
},
"event": {
"far": 2.693441465960436e-07,
"time": "2023-06-04T09:20:31.321Z",
"group": "CBC",
"search": "AllSky",
"area_50": 287.3007059263476,
"area_90": 2480.952015244209,
"duration": null,
"pipeline": "gstlal",
"properties": {
"HasNS": 0.5941427725688592,
"HasMassGap": 0.01661064425770308,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "057ad1c642ee72f1219ebd38dd8a5528",
"classification": {
"BBH": 0.7061956992397619,
"BNS": 3.6054262797413515e-19,
"NSBH": 0.0423002585795029,
"Terrestrial": 0.2515040421807352
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-06-04T09:25:45Z",
"superevent_id": "S230604z",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-04T09:25:46.574662Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-04T09:25:46.574687Z",
"modified": "2023-06-04T09:25:46.579392Z"
}
}
],
"references": [
{
"id": 147,
"topic": "gcn.circular",
"uuid": "d65efa0f-5447-4d38-96f3-b5399a61d147",
"title": "LIGO/Virgo S230604z: Global MASTER-Net observations report",
"submitter": "Hop gcn.circular",
"authors": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"data": {
"date": "23/06/04 09:32:38 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "33912",
"subject": "LIGO/Virgo S230604z: Global MASTER-Net observations report"
},
"message_text": "V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko,\nG.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin\n(Lomonosov Moscow State University, SAI, Physics Department),\n\nR. Podesta, C.Lopez, F. Podesta, C.Francile\n(Observatorio Astronomico Felix Aguilar OAFA),\n\nR. Rebolo, M. Serra\n(The Instituto de Astrofisica de Canarias),\n\nD. Buckley\n(South African Astronomical Observatory),\n\nO.A. Gres, N.M. Budnev\n(Irkutsk State University, API),\n\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez\n(INAOE, Guillermo Haro Astrophysics Observatory),\n\nA. Tlatov, D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nA. Gabovich, V.Yurkov\n(Blagoveschensk Educational State University)\n\n\nMASTER-OAFA robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Argentina (OAFA observatory of San Juan National University) started inspect of the LIGO/Virgo S230604z errorbox 168 sec after notice time and 254 sec after trigger time at 2023-06-04 09:24:45 UT, with upper limit up to 17.2 mag. The observations began at zenith distance = 39 deg. The sun altitude is -25.4 deg.\n\nThe galactic latitude b = -62 deg., longitude l = 85 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/ligo_1.php?id\u0011934\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 280 | 2023-06-04 09:24:45 | MASTER-OAFA | (23h 39m 21.01s , -04d 07m 15.8s) | C | 50 | 17.2 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n",
"published": "2023-06-04T09:32:49.931571Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-04T09:32:49.931591Z",
"modified": "2023-06-04T09:32:49.936837Z",
"targets": []
}
]
},
{
"event_id": "S230605o",
"sequences": [
{
"id": 38,
"sequence_number": 1,
"sequence_type": "PRELIMINARY",
"message": {
"id": 149,
"topic": "igwn.gwalert",
"uuid": "46d059ab-6eda-4298-b322-ebea2145fba2",
"title": "S230605o - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230605o/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230605o/view/"
},
"event": {
"far": 1.705496074225415e-12,
"time": "2023-06-05T06:53:43.493Z",
"group": "CBC",
"search": "AllSky",
"area_50": 352.24105172456166,
"area_90": 1420.7143179312027,
"duration": null,
"pipeline": "gstlal",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.0,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": true,
"skymap_hash": "3f7045a8a4df5f69e8355147eebda7f7",
"classification": {
"BBH": 0.9999969581871078,
"BNS": 2.585750205322853e-25,
"NSBH": 1.7434438952535805e-23,
"Terrestrial": 3.0418128922349297e-06
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-06-05T06:54:06Z",
"superevent_id": "S230605o",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-05T06:54:07.943262Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-05T06:54:07.943285Z",
"modified": "2023-06-05T06:54:07.951276Z"
}
},
{
"id": 39,
"sequence_number": 2,
"sequence_type": "PRELIMINARY",
"message": {
"id": 151,
"topic": "igwn.gwalert",
"uuid": "14e71472-ffb2-4c8e-a2ec-61d41b927bbb",
"title": "S230605o - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230605o/files/bayestar.multiorder.fits,1",
"gracedb": "https://gracedb.ligo.org/superevents/S230605o/view/"
},
"event": {
"far": 4.521287e-09,
"time": "2023-06-05T06:53:43.493Z",
"group": "CBC",
"search": "AllSky",
"area_50": 402.75603799570877,
"area_90": 1370.3566992185326,
"duration": null,
"pipeline": "MBTA",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.0,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": true,
"skymap_hash": "7d4bfe7c9df8179abf766db83844b646",
"classification": {
"BBH": 0.98770478,
"BNS": 0.0,
"NSBH": 0.0,
"Terrestrial": 0.01229522
},
"skymap_version": 1,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-06-05T06:58:42Z",
"superevent_id": "S230605o",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-05T06:58:43.812476Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-05T06:58:43.812500Z",
"modified": "2023-06-05T06:58:43.817563Z"
}
},
{
"id": 40,
"sequence_number": 3,
"sequence_type": "INITIAL",
"message": {
"id": 153,
"topic": "igwn.gwalert",
"uuid": "32d2ad54-7826-442f-a63d-c70d47edfd4b",
"title": "S230605o - INITIAL",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230605o/files/bayestar.multiorder.fits,1",
"gracedb": "https://gracedb.ligo.org/superevents/S230605o/view/"
},
"event": {
"far": 4.521287e-09,
"time": "2023-06-05T06:53:43.493Z",
"group": "CBC",
"search": "AllSky",
"area_50": 402.75603799570877,
"area_90": 1370.3566992185326,
"duration": null,
"pipeline": "MBTA",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.0,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": true,
"skymap_hash": "7d4bfe7c9df8179abf766db83844b646",
"classification": {
"BBH": 0.98770478,
"BNS": 0.0,
"NSBH": 0.0,
"Terrestrial": 0.01229522
},
"skymap_version": 1,
"central_frequency": null
},
"alert_type": "INITIAL",
"sequence_num": 3,
"time_created": "2023-06-05T07:09:54Z",
"superevent_id": "S230605o",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-05T07:09:55.492512Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-05T07:09:55.492548Z",
"modified": "2023-06-05T07:09:55.497720Z"
}
},
{
"id": 42,
"sequence_number": 4,
"sequence_type": "UPDATE",
"message": {
"id": 160,
"topic": "igwn.gwalert",
"uuid": "3bcc2b79-a460-4bd3-ae94-6c074ec8bdfd",
"title": "S230605o - UPDATE",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230605o/files/bayestar.multiorder.fits,2",
"gracedb": "https://gracedb.ligo.org/superevents/S230605o/view/"
},
"event": {
"far": 4.521287e-09,
"time": "2023-06-05T06:53:43.493Z",
"group": "CBC",
"search": "AllSky",
"area_50": 292.75611462022016,
"area_90": 1077.02357021723,
"duration": null,
"pipeline": "MBTA",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.0,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": true,
"skymap_hash": "d99dae3b7213a16086a7e4e75f6207de",
"classification": {
"BBH": 0.98770478,
"BNS": 0.0,
"NSBH": 0.0,
"Terrestrial": 0.01229522
},
"skymap_version": 2,
"central_frequency": null
},
"alert_type": "UPDATE",
"sequence_num": 4,
"time_created": "2023-06-05T19:42:44Z",
"superevent_id": "S230605o",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-05T19:42:45.376024Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-05T19:42:45.376047Z",
"modified": "2023-06-05T19:42:45.382932Z"
}
}
],
"references": [
{
"id": 161,
"topic": "gcn.circular",
"uuid": "884da015-79d8-4f8e-9030-85dc8c4c4dff",
"title": "LIGO/Virgo/KAGRA S230605o: Updated Sky localization",
"submitter": "Hop gcn.circular",
"authors": "Aditya Vijaykumar <aditya.vijaykumar@ligo.org>",
"data": {
"date": "23/06/05 19:53:07 GMT",
"from": "Aditya Vijaykumar <aditya.vijaykumar@ligo.org>",
"title": "GCN CIRCULAR",
"number": "33919",
"subject": "LIGO/Virgo/KAGRA S230605o: Updated Sky localization"
},
"message_text": "The LIGO Scientific Collaboration, the Virgo Collaboration, and the KAGRA Collaboration report:\n\nWe have conducted further analysis of the LIGO Hanford Observatory (H1) and LIGO Livingston Observatory (L1) data around the time of the compact binary merger (CBC) candidate S230605o (GCN Circular 33914). Parameter estimation has been performed using Bilby [1] and a new sky map, Bilby.multiorder.fits,0, distributed via GCN Notice, is available for retrieval from the GraceDB event page:\n\nhttps://gracedb.ligo.org/superevents/S230605o\n\nFor the Bilby.multiorder.fits,0 sky map, the 90% credible region is 1077 deg2. Marginalized over the whole sky, the a posteriori luminosity distance estimate is 1067 +/- 333 Mpc (a posteriori mean +/- standard deviation).\n\nFor further information about analysis methodology and the contents of this alert, refer to the LIGO/Virgo/KAGRA Public Alerts User Guide <https://emfollow.docs.ligo.org/userguide/>.\n\n\n [1] Ashton et al. ApJS 241, 27 (2019)\n\n",
"published": "2023-06-05T19:53:15.889616Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-05T19:53:15.889635Z",
"modified": "2023-06-05T19:53:15.894856Z",
"targets": []
},
{
"id": 154,
"topic": "gcn.circular",
"uuid": "473bf297-2887-48bc-834e-20c7530293a3",
"title": "LIGO/Virgo/KAGRA S230605o: Identification of a GW compact binary merger candidate",
"submitter": "Hop gcn.circular",
"authors": "lucia.papalini@phd.unipi.it",
"data": {
"date": "23/06/05 07:20:47 GMT",
"from": "lucia.papalini@phd.unipi.it",
"title": "GCN CIRCULAR",
"number": "33914",
"subject": "LIGO/Virgo/KAGRA S230605o: Identification of a GW compact binary merger candidate"
},
"message_text": "The LIGO Scientific Collaboration, the Virgo Collaboration, and the\nKAGRA Collaboration report:\n\nWe identified the compact binary merger candidate S230605o during\nreal-time processing of data from LIGO Hanford Observatory (H1) and\nLIGO Livingston Observatory (L1) at 2023-06-05 06:53:43.494 UTC (GPS\ntime: 1369983241.494). The candidate was found by the MBTA [1], GstLAL\n[2], PyCBC Live [3], and SPIIR [4] analysis pipelines.\n\nS230605o is an event of interest because its false alarm rate, as\nestimated by the online analysis, is 4.5e-09 Hz, or about one in 7\nyears. The event's properties can be found at this URL:\n\nhttps://gracedb.ligo.org/superevents/S230605o\n\nThe classification of the GW signal, in order of descending\nprobability, is BBH (99%), Terrestrial (1%), BNS (<1%), or NSBH (<1%).\n\nAssuming the candidate is astrophysical in origin, the probability\nthat the lighter compact object is consistent with a neutron star mass\n(HasNS) is <1%. [5] Using the masses and spins inferred from the\nsignal, the probability of matter outside the final compact object\n(HasRemnant) is <1%. [5] Both HasNS and HasRemnant consider the\nsupport of several neutron star equations of state. The probability\nthat any one of the binary components lie between 3 to 5 solar mass\n(HasMassgap) is <1%.\n\nTwo sky maps are available at this time and can be retrieved from the\nGraceDB event page:\n * bayestar.multiorder.fits,0, an initial localization generated by\nBAYESTAR [6], distributed via GCN notice about 22 seconds after the\ncandidate event time.\n * bayestar.multiorder.fits,1, an initial localization generated by\nBAYESTAR [6], distributed via GCN notice about 4 minutes after the\ncandidate event time.\n\nThe preferred sky map at this time is bayestar.multiorder.fits,1. For\nthe bayestar.multiorder.fits,1 sky map, the 90% credible region is\n1370 deg2. Marginalized over the whole sky, the a posteriori\nluminosity distance estimate is 1096 +/- 333 Mpc (a posteriori mean\n+/- standard deviation).\n\nFor further information about analysis methodology and the contents of\nthis alert, refer to the LIGO/Virgo/KAGRA Public Alerts User Guide\n<https://emfollow.docs.ligo.org/userguide/>.\n\n [1] Aubin et al. CQG 38, 095004 (2021)\n [2] Tsukada et al. arXiv:2305.06286 (2023) and Ewing et al.\narXiv:2305.05625 (2023)\n [3] Dal Canton et al. ApJ 923, 254 (2021)\n [4] Chu et al. PRD 105, 024023 (2022)\n [5] Chatterjee et al. ApJ 896, 54 (2020)\n [6] Singer & Price PRD 93, 024013 (2016)\n\n",
"published": "2023-06-05T07:20:56.776652Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-05T07:20:56.776681Z",
"modified": "2023-06-05T07:20:56.782181Z",
"targets": []
},
{
"id": 152,
"topic": "gcn.circular",
"uuid": "9cc32aa9-5b5f-4472-b154-dfe09daf1090",
"title": "LIGO/Virgo S230605o: Global MASTER-Net observations report",
"submitter": "Hop gcn.circular",
"authors": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"data": {
"date": "23/06/05 07:02:58 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "33913",
"subject": "LIGO/Virgo S230605o: Global MASTER-Net observations report"
},
"message_text": "V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko,\nG.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin\n(Lomonosov Moscow State University, SAI, Physics Department),\n\nR. Podesta, C.Lopez, F. Podesta, C.Francile\n(Observatorio Astronomico Felix Aguilar OAFA),\n\nR. Rebolo, M. Serra\n(The Instituto de Astrofisica de Canarias),\n\nD. Buckley\n(South African Astronomical Observatory),\n\nO.A. Gres, N.M. Budnev\n(Irkutsk State University, API),\n\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez\n(INAOE, Guillermo Haro Astrophysics Observatory),\n\nA. Tlatov, D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nA. Gabovich, V.Yurkov\n(Blagoveschensk Educational State University)\n\n\nMASTER-OAFA robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Argentina (OAFA observatory of San Juan National University) started inspect of the LIGO/Virgo S230605o errorbox 14 sec after notice time and 68 sec after trigger time at 2023-06-05 06:54:51 UT, with upper limit up to 16.3 mag. The observations began at zenith distance = 36 deg. The sun altitude is -57.4 deg.\n\nThe galactic latitude b = 4 deg., longitude l = 21 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/ligo_1.php?id\u0011938\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 74 | 2023-06-05 06:54:51 | MASTER-OAFA | (18h 18m 29.39s , +02d 17m 58.6s) | C | 10 | 16.3 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n",
"published": "2023-06-05T07:03:09.547997Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-05T07:03:09.548026Z",
"modified": "2023-06-05T07:03:09.553681Z",
"targets": []
}
]
},
{
"event_id": "S230606d",
"sequences": [
{
"id": 43,
"sequence_number": 1,
"sequence_type": "PRELIMINARY",
"message": {
"id": 163,
"topic": "igwn.gwalert",
"uuid": "e85e5069-f0f8-4da1-b61c-aca16d17ca0d",
"title": "S230606d - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230606d/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230606d/view/"
},
"event": {
"far": 5.5310677553918e-08,
"time": "2023-06-06T00:43:05.793Z",
"group": "CBC",
"search": "AllSky",
"area_50": 373.2233928548409,
"area_90": 1379.379105904553,
"duration": null,
"pipeline": "gstlal",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.0,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": true,
"skymap_hash": "21a990c9062a8f0b8a7cd3eff91b0404",
"classification": {
"BBH": 0.9667068842824107,
"BNS": 1.5904633502619938e-27,
"NSBH": 1.262620256758239e-25,
"Terrestrial": 0.033293115717589306
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-06-06T00:43:30Z",
"superevent_id": "S230606d",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-06T00:43:31.494484Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-06T00:43:31.494510Z",
"modified": "2023-06-06T00:43:31.501475Z"
}
},
{
"id": 44,
"sequence_number": 2,
"sequence_type": "PRELIMINARY",
"message": {
"id": 164,
"topic": "igwn.gwalert",
"uuid": "23df9e34-4664-49b4-b5d5-f4f7c72e4e1b",
"title": "S230606d - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230606d/files/bayestar.multiorder.fits,1",
"gracedb": "https://gracedb.ligo.org/superevents/S230606d/view/"
},
"event": {
"far": 1.140316503207786e-08,
"time": "2023-06-06T00:43:05.793Z",
"group": "CBC",
"search": "AllSky",
"area_50": 341.7498811594221,
"area_90": 1286.2175112861132,
"duration": null,
"pipeline": "pycbc",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.0,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": true,
"skymap_hash": "b877e8972b7da3357180a5ace4f65922",
"classification": {
"BBH": 0.999277956450759,
"BNS": 0.0,
"NSBH": 0.0,
"Terrestrial": 0.0007220435492409916
},
"skymap_version": 1,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-06-06T00:48:07Z",
"superevent_id": "S230606d",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-06T00:48:08.279845Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-06T00:48:08.279872Z",
"modified": "2023-06-06T00:48:08.285413Z"
}
},
{
"id": 45,
"sequence_number": 3,
"sequence_type": "INITIAL",
"message": {
"id": 166,
"topic": "igwn.gwalert",
"uuid": "4099a73b-17bc-45a4-8d3a-87b551496a92",
"title": "S230606d - INITIAL",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230606d/files/bayestar.multiorder.fits,1",
"gracedb": "https://gracedb.ligo.org/superevents/S230606d/view/"
},
"event": {
"far": 1.140316503207786e-08,
"time": "2023-06-06T00:43:05.793Z",
"group": "CBC",
"search": "AllSky",
"area_50": 341.7498811594221,
"area_90": 1286.2175112861132,
"duration": null,
"pipeline": "pycbc",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.0,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": true,
"skymap_hash": "b877e8972b7da3357180a5ace4f65922",
"classification": {
"BBH": 0.999277956450759,
"BNS": 0.0,
"NSBH": 0.0,
"Terrestrial": 0.0007220435492409916
},
"skymap_version": 1,
"central_frequency": null
},
"alert_type": "INITIAL",
"sequence_num": 3,
"time_created": "2023-06-06T01:01:25Z",
"superevent_id": "S230606d",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-06T01:01:26.898563Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-06T01:01:26.898589Z",
"modified": "2023-06-06T01:01:26.903705Z"
}
},
{
"id": 46,
"sequence_number": 4,
"sequence_type": "INITIAL",
"message": {
"id": 168,
"topic": "igwn.gwalert",
"uuid": "dcccd709-1c97-4763-8ef4-e4b378f21854",
"title": "S230606d - INITIAL",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230606d/files/bayestar.multiorder.fits,1",
"gracedb": "https://gracedb.ligo.org/superevents/S230606d/view/"
},
"event": {
"far": 1.140316503207786e-08,
"time": "2023-06-06T00:43:05.793Z",
"group": "CBC",
"search": "AllSky",
"area_50": 341.7498811594221,
"area_90": 1286.2175112861132,
"duration": null,
"pipeline": "pycbc",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.0,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": true,
"skymap_hash": "b877e8972b7da3357180a5ace4f65922",
"classification": {
"BBH": 0.999277956450759,
"BNS": 0.0,
"NSBH": 0.0,
"Terrestrial": 0.0007220435492409916
},
"skymap_version": 1,
"central_frequency": null
},
"alert_type": "INITIAL",
"sequence_num": 4,
"time_created": "2023-06-06T01:43:37Z",
"superevent_id": "S230606d",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-06T01:43:38.126209Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-06T01:43:38.126248Z",
"modified": "2023-06-06T01:43:38.132324Z"
}
},
{
"id": 72,
"sequence_number": 5,
"sequence_type": "UPDATE",
"message": {
"id": 234,
"topic": "igwn.gwalert",
"uuid": "63a7a663-703e-44e6-bdb0-8881c3071ca2",
"title": "S230606d - UPDATE",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230606d/files/bayestar.multiorder.fits,2",
"gracedb": "https://gracedb.ligo.org/superevents/S230606d/view/"
},
"event": {
"far": 1.140316503207786e-08,
"time": "2023-06-06T00:43:05.793Z",
"group": "CBC",
"search": "AllSky",
"area_50": 309.0698848490122,
"area_90": 1220.7526069596422,
"duration": null,
"pipeline": "pycbc",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.0,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": true,
"skymap_hash": "6615aa3f63844cfd095675e052ed7048",
"classification": {
"BBH": 0.999277956450759,
"BNS": 0.0,
"NSBH": 0.0,
"Terrestrial": 0.0007220435492409916
},
"skymap_version": 2,
"central_frequency": null
},
"alert_type": "UPDATE",
"sequence_num": 5,
"time_created": "2023-06-12T17:33:26Z",
"superevent_id": "S230606d",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-12T17:33:27.239170Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-12T17:33:27.239194Z",
"modified": "2023-06-12T17:33:27.247071Z"
}
}
],
"references": [
{
"id": 235,
"topic": "gcn.circular",
"uuid": "88b7115f-fd63-416c-8237-af84b77a335c",
"title": "LIGO/Virgo/KAGRA S230606d: Updated Sky localization",
"submitter": "Hop gcn.circular",
"authors": "Aditya Vijaykumar <aditya.vijaykumar@ligo.org>",
"data": {
"date": "23/06/12 17:37:21 GMT",
"from": "Aditya Vijaykumar <aditya.vijaykumar@ligo.org>",
"title": "GCN CIRCULAR",
"number": "33953",
"subject": "LIGO/Virgo/KAGRA S230606d: Updated Sky localization"
},
"message_text": "The LIGO Scientific Collaboration, the Virgo Collaboration, and the KAGRA Collaboration report:\n\nWe have conducted further analysis of the LIGO Hanford Observatory (H1) and LIGO Livingston Observatory (L1) data around the time of the compact binary merger (CBC) candidate S230606d (GCN Circular 33922). Parameter estimation has been performed using Bilby [1] and a new sky map, Bilby.offline1.multiorder.fits,0, distributed via GCN Notice, is available for retrieval from the GraceDB event page:\n\nhttps://gracedb.ligo.org/superevents/S230606d\n\nFor the Bilby.offline1.multiorder.fits,0 sky map, the 90% credible region is 1221 deg2. Marginalized over the whole sky, the a posteriori luminosity distance estimate is 2545 +/- 874 Mpc (a posteriori mean +/- standard deviation).\n\nFor further information about analysis methodology and the contents of this alert, refer to the LIGO/Virgo/KAGRA Public Alerts User Guide <https://emfollow.docs.ligo.org/userguide/>.\n\n\n [1] Ashton et al. ApJS 241, 27 (2019)\n\n",
"published": "2023-06-12T17:37:34.656934Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-12T17:37:34.656952Z",
"modified": "2023-06-12T17:37:34.663200Z",
"targets": []
},
{
"id": 170,
"topic": "gcn.circular",
"uuid": "d72ff3c8-8ac2-4118-9aca-326758ca4ffb",
"title": "LIGO/Virgo S230606d: Global MASTER-Net observations report",
"submitter": "Hop gcn.circular",
"authors": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"data": {
"date": "23/06/06 02:22:22 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "33923",
"subject": "LIGO/Virgo S230606d: Global MASTER-Net observations report"
},
"message_text": "V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko,\nG.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin\n(Lomonosov Moscow State University, SAI, Physics Department),\n\nR. Podesta, C.Lopez, F. Podesta, C.Francile\n(Observatorio Astronomico Felix Aguilar OAFA),\n\nR. Rebolo, M. Serra\n(The Instituto de Astrofisica de Canarias),\n\nD. Buckley\n(South African Astronomical Observatory),\n\nO.A. Gres, N.M. Budnev\n(Irkutsk State University, API),\n\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez\n(INAOE, Guillermo Haro Astrophysics Observatory),\n\nA. Tlatov, D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nA. Gabovich, V.Yurkov\n(Blagoveschensk Educational State University)\n\n\nMASTER-SAAO robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in South Africa (South African Astronomical Observatory) started inspect of the LIGO/Virgo S230606d errorbox 4075 sec after notice time and 4138 sec after trigger time at 2023-06-06 01:52:03 UT, with upper limit up to 18.7 mag. The observations began at zenith distance = 55 deg. The sun altitude is -46.1 deg.\n\nThe galactic latitude b = 31 deg., longitude l = 174 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/ligo_1.php?id\u0011944\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 4228 | 2023-06-06 01:52:03 | MASTER-SAAO | (23h 29m 35.30s , -02d 50m 28.6s) | C | 180 | 18.7 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n",
"published": "2023-06-06T02:22:31.711748Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-06T02:22:31.711768Z",
"modified": "2023-06-06T02:22:31.719302Z",
"targets": []
},
{
"id": 169,
"topic": "gcn.circular",
"uuid": "14d19708-e424-4992-9d4e-d961c7648ab1",
"title": "LIGO/Virgo/KAGRA S230606d: Identification of a GW compact binary merger candidate",
"submitter": "Hop gcn.circular",
"authors": "yamazaki.ryo.77@gmail.com",
"data": {
"date": "23/06/06 02:03:29 GMT",
"from": "yamazaki.ryo.77@gmail.com",
"title": "GCN CIRCULAR",
"number": "33922",
"subject": "LIGO/Virgo/KAGRA S230606d: Identification of a GW compact binary merger candidate"
},
"message_text": "The LIGO Scientific Collaboration, the Virgo Collaboration, and the\nKAGRA Collaboration report:\n\nWe identified the compact binary merger candidate S230606d during\nreal-time processing of data from LIGO Hanford Observatory (H1) and\nLIGO Livingston Observatory (L1) at 2023-06-06 00:43:05.793 UTC (GPS\ntime: 1370047403.793). The candidate was found by the CWB [1], MBTA\n[2], GstLAL [3], PyCBC Live [4], and SPIIR [5] analysis pipelines.\n\nS230606d is an event of interest because its false alarm rate, as\nestimated by the online analysis, is 1.1e-08 Hz, or about one in 2\nyears. The event's properties can be found at this URL:\n\nhttps://gracedb.ligo.org/superevents/S230606d\n\nThe classification of the GW signal, in order of descending\nprobability, is BBH (>99%), Terrestrial (<1%), BNS (<1%), or NSBH\n(<1%).\n\nAssuming the candidate is astrophysical in origin, the probability\nthat the lighter compact object is consistent with a neutron star mass\n(HasNS) is <1%. [6] Using the masses and spins inferred from the\nsignal, the probability of matter outside the final compact object\n(HasRemnant) is <1%. [6] Both HasNS and HasRemnant consider the\nsupport of several neutron star equations of state. The probability\nthat any one of the binary components lie between 3 to 5 solar mass\n(HasMassgap) is <1%.\n\nTwo sky maps are available at this time and can be retrieved from the\nGraceDB event page:\n * bayestar.multiorder.fits,0, an initial localization generated by\nBAYESTAR [7], distributed via GCN notice about 24 seconds after the\ncandidate event time.\n * bayestar.multiorder.fits,1, an initial localization generated by\nBAYESTAR [7], distributed via GCN notice about 5 minutes after the\ncandidate event time.\nThis candidate has had two Initial Alerts sent, with the same content, due to a glitch.\n\nThe preferred sky map at this time is bayestar.multiorder.fits,1. For\nthe bayestar.multiorder.fits,1 sky map, the 90% credible region is\n1286 deg2. Marginalized over the whole sky, the a posteriori\nluminosity distance estimate is 1818 +/- 557 Mpc (a posteriori mean\n+/- standard deviation).\n\nFor further information about analysis methodology and the contents of\nthis alert, refer to the LIGO/Virgo/KAGRA Public Alerts User Guide\n<https://emfollow.docs.ligo.org/userguide/>.\n\n [1] Klimenko et al. PRD 93, 042004 (2016)\n [2] Aubin et al. CQG 38, 095004 (2021)\n [3] Tsukada et al. arXiv:2305.06286 (2023) and Ewing et al.\narXiv:2305.05625 (2023)\n [4] Dal Canton et al. ApJ 923, 254 (2021)\n [5] Chu et al. PRD 105, 024023 (2022)\n [6] Chatterjee et al. ApJ 896, 54 (2020)\n [7] Singer & Price PRD 93, 024013 (2016)\n\n",
"published": "2023-06-06T02:03:38.185296Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-06T02:03:38.185318Z",
"modified": "2023-06-06T02:03:38.191540Z",
"targets": []
}
]
},
{
"event_id": "S230606z",
"sequences": [
{
"id": 47,
"sequence_number": 1,
"sequence_type": "PRELIMINARY",
"message": {
"id": 172,
"topic": "igwn.gwalert",
"uuid": "9b66d4b9-206f-46ef-951a-6eaeab4e6bb6",
"title": "S230606z - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230606z/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230606z/view/"
},
"event": {
"far": 4.154582205865146e-07,
"time": "2023-06-06T06:53:20.111Z",
"group": "CBC",
"search": "AllSky",
"area_50": 1348.7448878543455,
"area_90": 5986.681571291254,
"duration": null,
"pipeline": "gstlal",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.0,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "f26b7a29ec66106d8bc644bd638f0858",
"classification": {
"BBH": 0.8346274263882714,
"BNS": 1.010269123355217e-35,
"NSBH": 9.061869075001201e-34,
"Terrestrial": 0.16537257361172863
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-06-06T06:53:49Z",
"superevent_id": "S230606z",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-06T06:53:49.863922Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-06T06:53:49.863958Z",
"modified": "2023-06-06T06:53:49.871304Z"
}
},
{
"id": 48,
"sequence_number": 2,
"sequence_type": "PRELIMINARY",
"message": {
"id": 173,
"topic": "igwn.gwalert",
"uuid": "22b0b189-064b-4d85-9dfe-ce9cb9175fb1",
"title": "S230606z - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230606z/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230606z/view/"
},
"event": {
"far": 4.154582205865146e-07,
"time": "2023-06-06T06:53:20.111Z",
"group": "CBC",
"search": "AllSky",
"area_50": 1348.7448878543455,
"area_90": 5986.681571291254,
"duration": null,
"pipeline": "gstlal",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.0,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "f26b7a29ec66106d8bc644bd638f0858",
"classification": {
"BBH": 0.8346274263882714,
"BNS": 1.010269123355217e-35,
"NSBH": 9.061869075001201e-34,
"Terrestrial": 0.16537257361172863
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-06-06T06:58:23Z",
"superevent_id": "S230606z",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-06T06:58:25.107202Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-06T06:58:25.107229Z",
"modified": "2023-06-06T06:58:25.113561Z"
}
}
],
"references": [
{
"id": 175,
"topic": "gcn.circular",
"uuid": "9520e508-840c-4976-b54d-a82fd9b213c4",
"title": "LIGO/Virgo S230606z: Global MASTER-Net observations report",
"submitter": "Hop gcn.circular",
"authors": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"data": {
"date": "23/06/06 07:06:40 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "33925",
"subject": "LIGO/Virgo S230606z: Global MASTER-Net observations report"
},
"message_text": "V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko,\nG.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin\n(Lomonosov Moscow State University, SAI, Physics Department),\n\nR. Podesta, C.Lopez, F. Podesta, C.Francile\n(Observatorio Astronomico Felix Aguilar OAFA),\n\nR. Rebolo, M. Serra\n(The Instituto de Astrofisica de Canarias),\n\nD. Buckley\n(South African Astronomical Observatory),\n\nO.A. Gres, N.M. Budnev\n(Irkutsk State University, API),\n\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez\n(INAOE, Guillermo Haro Astrophysics Observatory),\n\nA. Tlatov, D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nA. Gabovich, V.Yurkov\n(Blagoveschensk Educational State University)\n\n\nMASTER-OAFA robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Argentina (OAFA observatory of San Juan National University) started inspect of the LIGO/Virgo S230606z errorbox 63 sec after trigger time at 2023-06-06 06:54:23 UT, with upper limit up to 17.8 mag. The observations began at zenith distance = 68 deg. The sun altitude is -57.6 deg.\n\nThe galactic latitude b = 46 deg., longitude l = 229 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/ligo_1.php?id\u0011954\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 154 | 2023-06-06 06:54:23 | MASTER-OAFA | (16h 14m 22.98s , +20d 47m 18.6s) | C | 180 | 17.8 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n",
"published": "2023-06-06T07:06:48.924944Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-06T07:06:48.924975Z",
"modified": "2023-06-06T07:06:48.930617Z",
"targets": []
}
]
},
{
"event_id": "S230608q",
"sequences": [
{
"id": 49,
"sequence_number": 1,
"sequence_type": "PRELIMINARY",
"message": {
"id": 188,
"topic": "igwn.gwalert",
"uuid": "a783eb90-2b83-401d-b003-6367c553691f",
"title": "S230608q - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230608q/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230608q/view/"
},
"event": {
"far": 1.581872393616579e-06,
"time": "2023-06-08T09:22:05.861Z",
"group": "CBC",
"search": "AllSky",
"area_50": 693.0467275331212,
"area_90": 2542.220451344625,
"duration": null,
"pipeline": "pycbc",
"properties": {
"HasNS": 1.0,
"HasMassGap": 0.9478299054395087,
"HasRemnant": 0.00433270707476398
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "e07ae9a5478929bc36cdae89215600d9",
"classification": {
"BBH": 0.0,
"BNS": 0.0033412509970743506,
"NSBH": 0.00646311218991797,
"Terrestrial": 0.9901956368130077
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-06-08T09:22:38Z",
"superevent_id": "S230608q",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-08T09:22:39.751288Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-08T09:22:39.751309Z",
"modified": "2023-06-08T09:22:39.760043Z"
}
},
{
"id": 50,
"sequence_number": 2,
"sequence_type": "PRELIMINARY",
"message": {
"id": 189,
"topic": "igwn.gwalert",
"uuid": "f6d9b1ef-1d5e-4e71-9681-ce14a9ae4c0c",
"title": "S230608q - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230608q/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230608q/view/"
},
"event": {
"far": 1.581872393616579e-06,
"time": "2023-06-08T09:22:05.861Z",
"group": "CBC",
"search": "AllSky",
"area_50": 693.0467275331212,
"area_90": 2542.220451344625,
"duration": null,
"pipeline": "pycbc",
"properties": {
"HasNS": 1.0,
"HasMassGap": 0.9478299054395087,
"HasRemnant": 0.00433270707476398
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "e07ae9a5478929bc36cdae89215600d9",
"classification": {
"BBH": 0.0,
"BNS": 0.0033412509970743506,
"NSBH": 0.00646311218991797,
"Terrestrial": 0.9901956368130077
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-06-08T09:27:13Z",
"superevent_id": "S230608q",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-08T09:27:14.426792Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-08T09:27:14.426819Z",
"modified": "2023-06-08T09:27:14.433150Z"
}
}
],
"references": [
{
"id": 208,
"topic": "gcn.circular",
"uuid": "293c072e-52ed-4a76-ace0-0f0143385ca1",
"title": "LIGO/Virgo S230608q: Global MASTER-Net observations report",
"submitter": "Hop gcn.circular",
"authors": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"data": {
"date": "23/06/09 06:40:44 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "33940",
"subject": "LIGO/Virgo S230608q: Global MASTER-Net observations report"
},
"message_text": "V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko,\nG.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin\n(Lomonosov Moscow State University, SAI, Physics Department),\n\nR. Podesta, C.Lopez, F. Podesta, C.Francile\n(Observatorio Astronomico Felix Aguilar OAFA),\n\nR. Rebolo, M. Serra\n(The Instituto de Astrofisica de Canarias),\n\nD. Buckley\n(South African Astronomical Observatory),\n\nO.A. Gres, N.M. Budnev\n(Irkutsk State University, API),\n\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez\n(INAOE, Guillermo Haro Astrophysics Observatory),\n\nA. Tlatov, D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nA. Gabovich, V.Yurkov\n(Blagoveschensk Educational State University)\n\n\nMASTER-OAFA robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Argentina (OAFA observatory of San Juan National University) started inspect of the LIGO/Virgo S230608q errorbox 47668 sec after notice time and 47755 sec after trigger time at 2023-06-08 22:38:00 UT, with upper limit up to 19.1 mag. Observations started at twilight. The observations began at zenith distance = 55 deg. The sun altitude is -12.4 deg.\n\nThe galactic latitude b = 43 deg., longitude l = 88 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/ligo_1.php?id\u0011958\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 47845 | 2023-06-08 22:38:00 | MASTER-OAFA | (08h 40m 42.61s , +10d 16m 17.1s) | C | 180 | 17.0 |\n 48057 | 2023-06-08 22:41:31 | MASTER-OAFA | (08h 48m 45.49s , +10d 15m 35.1s) | C | 180 | 17.5 |\n 48737 | 2023-06-08 22:52:52 | MASTER-OAFA | (08h 44m 18.11s , +12d 08m 44.5s) | C | 180 | 18.3 |\n 48948 | 2023-06-08 22:56:23 | MASTER-OAFA | (08h 52m 26.08s , +12d 10m 26.2s) | C | 180 | 18.4 |\n 49525 | 2023-06-08 23:05:59 | MASTER-OAFA | (08h 44m 11.83s , +12d 10m 08.8s) | C | 180 | 18.5 |\n 49736 | 2023-06-08 23:09:31 | MASTER-OAFA | (08h 52m 29.57s , +12d 09m 23.8s) | C | 180 | 18.3 |\n 49948 | 2023-06-08 23:13:02 | MASTER-OAFA | (08h 59m 46.53s , +12d 08m 37.0s) | C | 180 | 18.3 |\n 50263 | 2023-06-08 23:18:17 | MASTER-OAFA | (08h 56m 08.80s , +10d 14m 26.6s) | C | 180 | 18.3 |\n 61901 | 2023-06-09 02:32:16 | MASTER-OAFA | (16h 25m 28.81s , +15d 58m 24.4s) | C | 180 | 18.7 |\n 62475 | 2023-06-09 02:41:50 | MASTER-OAFA | (16h 17m 14.77s , +15d 56m 35.6s) | C | 180 | 18.8 |\n 62686 | 2023-06-09 02:45:21 | MASTER-OAFA | (16h 25m 31.84s , +15d 58m 01.7s) | C | 180 | 18.7 |\n 62899 | 2023-06-09 02:48:53 | MASTER-OAFA | (16h 16m 08.41s , +12d 10m 33.0s) | C | 180 | 18.8 |\n 63321 | 2023-06-09 02:55:56 | MASTER-OAFA | (16h 11m 25.11s , +17d 51m 42.3s) | C | 180 | 19.1 |\n 63754 | 2023-06-09 03:03:09 | MASTER-OAFA | (16h 16m 08.48s , +12d 08m 43.0s) | C | 180 | 18.8 |\n 64176 | 2023-06-09 03:10:11 | MASTER-OAFA | (16h 11m 22.37s , +17d 51m 05.9s) | C | 180 | 18.9 |\n 64388 | 2023-06-09 03:13:42 | MASTER-OAFA | (16h 19m 51.02s , +17d 52m 10.5s) | C | 180 | 18.7 |\n 64598 | 2023-06-09 03:17:13 | MASTER-OAFA | (16h 27m 21.26s , +17d 52m 17.2s) | C | 180 | 18.6 |\n 65021 | 2023-06-09 03:24:15 | MASTER-OAFA | (15h 57m 48.76s , +25d 27m 10.4s) | C | 180 | 18.5 |\n 65231 | 2023-06-09 03:27:46 | MASTER-OAFA | (16h 06m 39.41s , +25d 28m 17.1s) | C | 180 | 18.4 |\n 65443 | 2023-06-09 03:31:17 | MASTER-OAFA | (16h 27m 23.14s , +17d 50m 22.6s) | C | 180 | 18.5 |\n 66108 | 2023-06-09 03:42:23 | MASTER-OAFA | (16h 06m 37.05s , +25d 28m 35.5s) | C | 180 | 18.4 |\n 66320 | 2023-06-09 03:45:54 | MASTER-OAFA | (15h 56m 46.50s , +27d 20m 45.9s) | C | 180 | 18.4 |\n 66561 | 2023-06-09 03:49:55 | MASTER-OAFA | (16h 05m 55.62s , +27d 20m 40.7s) | C | 180 | 18.4 |\n 67196 | 2023-06-09 04:00:30 | MASTER-OAFA | (15h 56m 46.30s , +27d 21m 32.2s) | C | 180 | 18.4 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n",
"published": "2023-06-09T06:40:53.241037Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-09T06:40:53.241056Z",
"modified": "2023-06-09T06:40:53.249767Z",
"targets": []
}
]
},
{
"event_id": "S230608aa",
"sequences": [
{
"id": 51,
"sequence_number": 1,
"sequence_type": "PRELIMINARY",
"message": {
"id": 191,
"topic": "igwn.gwalert",
"uuid": "72c20da5-71d3-4fb6-8a1c-1f62b1645f39",
"title": "S230608aa - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230608aa/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230608aa/view/"
},
"event": {
"far": 6.8767420235114e-07,
"time": "2023-06-08T18:04:38.851Z",
"group": "CBC",
"search": "AllSky",
"area_50": 482.90858111337525,
"area_90": 1706.7036275369078,
"duration": null,
"pipeline": "pycbc",
"properties": {
"HasNS": 0.9409582380250058,
"HasMassGap": 0.752353606461007,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "0334122a1f5f45755dd8bf6791882a5e",
"classification": {
"BBH": 0.005397508025070268,
"BNS": 0.0,
"NSBH": 0.03450616337963374,
"Terrestrial": 0.960096328595296
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-06-08T18:05:07Z",
"superevent_id": "S230608aa",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-08T18:05:08.475049Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-08T18:05:08.475070Z",
"modified": "2023-06-08T18:05:08.482264Z"
}
},
{
"id": 52,
"sequence_number": 2,
"sequence_type": "PRELIMINARY",
"message": {
"id": 192,
"topic": "igwn.gwalert",
"uuid": "87f1be01-7d68-42ec-a9e2-aadee41a69a9",
"title": "S230608aa - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230608aa/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230608aa/view/"
},
"event": {
"far": 6.8767420235114e-07,
"time": "2023-06-08T18:04:38.851Z",
"group": "CBC",
"search": "AllSky",
"area_50": 482.90858111337525,
"area_90": 1706.7036275369078,
"duration": null,
"pipeline": "pycbc",
"properties": {
"HasNS": 0.9409582380250058,
"HasMassGap": 0.752353606461007,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "0334122a1f5f45755dd8bf6791882a5e",
"classification": {
"BBH": 0.005397508025070268,
"BNS": 0.0,
"NSBH": 0.03450616337963374,
"Terrestrial": 0.960096328595296
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-06-08T18:09:44Z",
"superevent_id": "S230608aa",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-08T18:09:45.050720Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-08T18:09:45.050742Z",
"modified": "2023-06-08T18:09:45.070978Z"
}
}
],
"references": []
},
{
"event_id": "S230608ah",
"sequences": [
{
"id": 53,
"sequence_number": 1,
"sequence_type": "PRELIMINARY",
"message": {
"id": 194,
"topic": "igwn.gwalert",
"uuid": "7724afdf-9056-467e-a697-abc43cbfe657",
"title": "S230608ah - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230608ah/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230608ah/view/"
},
"event": {
"far": 4.916922e-07,
"time": "2023-06-08T19:06:22.604Z",
"group": "CBC",
"search": "AllSky",
"area_50": 580.7912024861275,
"area_90": 3476.354278464653,
"duration": null,
"pipeline": "MBTA",
"properties": {
"HasNS": 1.0,
"HasMassGap": 0.0,
"HasRemnant": 1.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "bffaba03a01b9637a698beef79709665",
"classification": {
"BBH": 0.0,
"BNS": 0.019000514,
"NSBH": 0.0,
"Terrestrial": 0.980999486
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-06-08T19:06:54Z",
"superevent_id": "S230608ah",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-08T19:06:55.376259Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-08T19:06:55.376285Z",
"modified": "2023-06-08T19:06:55.384838Z"
}
},
{
"id": 54,
"sequence_number": 2,
"sequence_type": "PRELIMINARY",
"message": {
"id": 195,
"topic": "igwn.gwalert",
"uuid": "9bcdf2c6-4ccc-4589-b500-3e723caf65e4",
"title": "S230608ah - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230608ah/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230608ah/view/"
},
"event": {
"far": 4.916922e-07,
"time": "2023-06-08T19:06:22.604Z",
"group": "CBC",
"search": "AllSky",
"area_50": 580.7912024861275,
"area_90": 3476.354278464653,
"duration": null,
"pipeline": "MBTA",
"properties": {
"HasNS": 1.0,
"HasMassGap": 0.0,
"HasRemnant": 1.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "bffaba03a01b9637a698beef79709665",
"classification": {
"BBH": 0.0,
"BNS": 0.019000514,
"NSBH": 0.0,
"Terrestrial": 0.980999486
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-06-08T19:11:28Z",
"superevent_id": "S230608ah",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-08T19:11:29.030344Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-08T19:11:29.030375Z",
"modified": "2023-06-08T19:11:29.036961Z"
}
}
],
"references": []
},
{
"event_id": "S230608as",
"sequences": [
{
"id": 55,
"sequence_number": 1,
"sequence_type": "PRELIMINARY",
"message": {
"id": 197,
"topic": "igwn.gwalert",
"uuid": "3368eae6-5773-4b53-8f8e-f01c58d03cc7",
"title": "S230608as - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230608as/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230608as/view/"
},
"event": {
"far": 1.369213707937339e-10,
"time": "2023-06-08T20:50:47.157Z",
"group": "CBC",
"search": "AllSky",
"area_50": 468.0111189108769,
"area_90": 2216.574517002692,
"duration": null,
"pipeline": "gstlal",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.0,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": true,
"skymap_hash": "319e0f57de74007d7187d5822fa629be",
"classification": {
"BBH": 0.9998056109287473,
"BNS": 2.6521932956095014e-24,
"NSBH": 5.421817374918003e-19,
"Terrestrial": 0.00019438907125268745
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-06-08T20:51:12Z",
"superevent_id": "S230608as",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-08T20:51:13.007483Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-08T20:51:13.007502Z",
"modified": "2023-06-08T20:51:13.013700Z"
}
},
{
"id": 56,
"sequence_number": 2,
"sequence_type": "INITIAL",
"message": {
"id": 199,
"topic": "igwn.gwalert",
"uuid": "130df3d1-43de-4c59-8725-b72379f69269",
"title": "S230608as - INITIAL",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230608as/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230608as/view/"
},
"event": {
"far": 1.369213707937339e-10,
"time": "2023-06-08T20:50:47.157Z",
"group": "CBC",
"search": "AllSky",
"area_50": 468.0111189108769,
"area_90": 2216.574517002692,
"duration": null,
"pipeline": "gstlal",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.0,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": true,
"skymap_hash": "319e0f57de74007d7187d5822fa629be",
"classification": {
"BBH": 0.9998056109287473,
"BNS": 2.6521932956095014e-24,
"NSBH": 5.421817374918003e-19,
"Terrestrial": 0.00019438907125268745
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "INITIAL",
"sequence_num": 2,
"time_created": "2023-06-08T21:32:28Z",
"superevent_id": "S230608as",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-08T21:32:28.944894Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-08T21:32:28.944923Z",
"modified": "2023-06-08T21:32:28.951965Z"
}
},
{
"id": 73,
"sequence_number": 3,
"sequence_type": "UPDATE",
"message": {
"id": 236,
"topic": "igwn.gwalert",
"uuid": "171023ce-34e6-4739-8cd9-28ad25992082",
"title": "S230608as - UPDATE",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230608as/files/bayestar.multiorder.fits,1",
"gracedb": "https://gracedb.ligo.org/superevents/S230608as/view/"
},
"event": {
"far": 1.369213707937339e-10,
"time": "2023-06-08T20:50:47.157Z",
"group": "CBC",
"search": "AllSky",
"area_50": 468.74550085043677,
"area_90": 1693.6945760361352,
"duration": null,
"pipeline": "gstlal",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.0,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": true,
"skymap_hash": "c8072132e31270a22cb4c67f405ee18b",
"classification": {
"BBH": 0.9998056109287473,
"BNS": 2.6521932956095014e-24,
"NSBH": 5.421817374918003e-19,
"Terrestrial": 0.00019438907125268745
},
"skymap_version": 1,
"central_frequency": null
},
"alert_type": "UPDATE",
"sequence_num": 3,
"time_created": "2023-06-12T17:40:20Z",
"superevent_id": "S230608as",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-12T17:40:21.911575Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-12T17:40:21.911603Z",
"modified": "2023-06-12T17:40:21.917972Z"
}
}
],
"references": []
},
{
"event_id": "S230608a",
"sequences": [],
"references": [
{
"id": 237,
"topic": "gcn.circular",
"uuid": "f9ccc941-719c-4c9f-b16c-1be215265b27",
"title": "LIGO/Virgo/KAGRA S230608as: Updated Sky localization",
"submitter": "Hop gcn.circular",
"authors": "Aditya Vijaykumar <aditya.vijaykumar@ligo.org>",
"data": {
"date": "23/06/12 17:47:27 GMT",
"from": "Aditya Vijaykumar <aditya.vijaykumar@ligo.org>",
"title": "GCN CIRCULAR",
"number": "33954",
"subject": "LIGO/Virgo/KAGRA S230608as: Updated Sky localization"
},
"message_text": "The LIGO Scientific Collaboration, the Virgo Collaboration, and the KAGRA Collaboration report:\n\nWe have conducted further analysis of the LIGO Hanford Observatory (H1) and LIGO Livingston Observatory (L1) data around the time of the compact binary merger (CBC) candidate S230608as (GCN Circular 33938). Parameter estimation has been performed using Bilby [1] and a new sky map, Bilby.offline0.multiorder.fits,0, distributed via GCN Notice, is available for retrieval from the GraceDB event page:\n\nhttps://gracedb.ligo.org/superevents/S230608as\n\nFor the Bilby.offline0.multiorder.fits,0 sky map, the 90% credible region is 1694 deg2. Marginalized over the whole sky, the a posteriori luminosity distance estimate is 3447 +/- 1079 Mpc (a posteriori mean +/- standard deviation).\n\nFor further information about analysis methodology and the contents of this alert, refer to the LIGO/Virgo/KAGRA Public Alerts User Guide <https://emfollow.docs.ligo.org/userguide/>.\n\n\n [1] Ashton et al. ApJS 241, 27 (2019)\n\n",
"published": "2023-06-12T17:47:36.749501Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-12T17:47:36.749526Z",
"modified": "2023-06-12T17:47:36.756175Z",
"targets": []
},
{
"id": 217,
"topic": "gcn.circular",
"uuid": "d44d977d-8e37-40c4-8182-bf1856dbb960",
"title": "LIGO/Virgo S230608aw: Global MASTER-Net observations report",
"submitter": "Hop gcn.circular",
"authors": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"data": {
"date": "23/06/09 08:52:29 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "33945",
"subject": "LIGO/Virgo S230608aw: Global MASTER-Net observations report"
},
"message_text": "V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko,\nG.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin\n(Lomonosov Moscow State University, SAI, Physics Department),\n\nR. Podesta, C.Lopez, F. Podesta, C.Francile\n(Observatorio Astronomico Felix Aguilar OAFA),\n\nR. Rebolo, M. Serra\n(The Instituto de Astrofisica de Canarias),\n\nD. Buckley\n(South African Astronomical Observatory),\n\nO.A. Gres, N.M. Budnev\n(Irkutsk State University, API),\n\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez\n(INAOE, Guillermo Haro Astrophysics Observatory),\n\nA. Tlatov, D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nA. Gabovich, V.Yurkov\n(Blagoveschensk Educational State University)\n\n\nMASTER-OAFA robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Argentina (OAFA observatory of San Juan National University) started inspect of the LIGO/Virgo S230608aw errorbox 25858 sec after notice time and 25951 sec after trigger time at 2023-06-09 06:59:58 UT, with upper limit up to 18.2 mag. The observations began at zenith distance = 73 deg. The sun altitude is -56.6 deg.\n\nThe galactic latitude b = -86 deg., longitude l = 137 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/ligo_1.php?id\u0011972\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 26041 | 2023-06-09 06:59:58 | MASTER-OAFA | (01h 19m 56.47s , -27d 55m 26.0s) | C | 180 | 17.8 |\n 26252 | 2023-06-09 07:03:29 | MASTER-OAFA | (01h 29m 03.55s , -27d 56m 18.9s) | C | 180 | 17.8 |\n 26464 | 2023-06-09 07:07:00 | MASTER-OAFA | (01h 02m 55.32s , -27d 57m 03.9s) | C | 180 | 18.2 |\n 26675 | 2023-06-09 07:10:31 | MASTER-OAFA | (01h 11m 53.05s , -27d 55m 38.2s) | C | 180 | 17.9 |\n 26886 | 2023-06-09 07:14:02 | MASTER-OAFA | (01h 19m 59.93s , -27d 57m 03.7s) | C | 180 | 17.5 |\n 27097 | 2023-06-09 07:17:34 | MASTER-OAFA | (01h 29m 03.27s , -27d 55m 22.0s) | C | 180 | 16.5 |\n 27308 | 2023-06-09 07:21:05 | MASTER-OAFA | (01h 02m 48.51s , -27d 56m 12.7s) | C | 180 | 17.8 |\n 27857 | 2023-06-09 07:30:14 | MASTER-OAFA | (01h 27m 35.81s , -26d 03m 02.0s) | C | 180 | 16.2 |\n 28068 | 2023-06-09 07:33:45 | MASTER-OAFA | (01h 01m 49.27s , -26d 02m 42.2s) | C | 180 | 15.7 |\n 28280 | 2023-06-09 07:37:16 | MASTER-OAFA | (01h 10m 43.97s , -26d 01m 26.8s) | C | 180 | 15.5 |\n 29314 | 2023-06-09 07:54:30 | MASTER-OAFA | (00h 44m 58.58s , -26d 01m 03.7s) | C | 180 | 17.8 |\n 29525 | 2023-06-09 07:58:02 | MASTER-OAFA | (00h 53m 50.54s , -26d 02m 43.5s) | C | 180 | 16.6 |\n 29737 | 2023-06-09 08:01:33 | MASTER-OAFA | (00h 44m 14.20s , -24d 07m 59.0s) | C | 180 | 17.5 |\n 30388 | 2023-06-09 08:12:24 | MASTER-OAFA | (00h 45m 00.84s , -26d 02m 54.2s) | C | 180 | 17.9 |\n 30920 | 2023-06-09 08:21:17 | MASTER-OAFA | (00h 44m 20.51s , -24d 07m 17.5s) | C | 180 | 17.3 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n",
"published": "2023-06-09T08:52:38.106256Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-09T08:52:38.106290Z",
"modified": "2023-06-09T08:52:38.115182Z",
"targets": []
},
{
"id": 212,
"topic": "gcn.circular",
"uuid": "83ce68b4-fddc-41a6-8e70-7483a5bf8c8a",
"title": "LIGO/Virgo S230608as: Global MASTER-Net observations report",
"submitter": "Hop gcn.circular",
"authors": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"data": {
"date": "23/06/09 06:50:34 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "33943",
"subject": "LIGO/Virgo S230608as: Global MASTER-Net observations report"
},
"message_text": "V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko,\nG.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin\n(Lomonosov Moscow State University, SAI, Physics Department),\n\nR. Podesta, C.Lopez, F. Podesta, C.Francile\n(Observatorio Astronomico Felix Aguilar OAFA),\n\nR. Rebolo, M. Serra\n(The Instituto de Astrofisica de Canarias),\n\nD. Buckley\n(South African Astronomical Observatory),\n\nO.A. Gres, N.M. Budnev\n(Irkutsk State University, API),\n\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez\n(INAOE, Guillermo Haro Astrophysics Observatory),\n\nA. Tlatov, D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nA. Gabovich, V.Yurkov\n(Blagoveschensk Educational State University)\n\n\nMASTER-Kislovodsk robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Russia (Lomonosov MSU, Kislovodsk Solar Station of Pulkovo observatory) started inspect of the LIGO/Virgo S230608as errorbox 4 sec after notice time and 53 sec after trigger time at 2023-06-08 20:51:40 UT, with upper limit up to 17.6 mag. The observations began at zenith distance = 85 deg. The sun altitude is -24.0 deg.\n\nThe galactic latitude b = -1 deg., longitude l = 150 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/ligo_1.php?id\u0011968\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 59 | 2023-06-08 20:51:40 | MASTER-Kislovodsk | (04h 00m 18.64s , +51d 11m 35.3s) | C | 10 | 15.8 |\n 84 | 2023-06-08 20:51:40 | MASTER-Kislovodsk | (04h 00m 18.64s , +51d 11m 35.3s) | C | 60 | 16.9 | Coadd\n 314 | 2023-06-08 20:51:40 | MASTER-Kislovodsk | (04h 00m 18.64s , +51d 11m 35.7s) | C | 520 | 17.6 | Coadd\n 98 | 2023-06-08 20:52:14 | MASTER-Kislovodsk | (04h 00m 24.55s , +51d 10m 32.3s) | C | 20 | 16.1 |\n 146 | 2023-06-08 20:52:58 | MASTER-Kislovodsk | (04h 00m 19.41s , +51d 09m 28.1s) | C | 30 | 16.5 |\n 206 | 2023-06-08 20:53:52 | MASTER-Kislovodsk | (04h 00m 24.45s , +51d 09m 48.3s) | C | 40 | 16.5 |\n 261 | 2023-06-08 20:53:52 | MASTER-Kislovodsk | (04h 00m 24.46s , +51d 09m 47.9s) | C | 150 | 17.3 | Coadd\n 274 | 2023-06-08 20:54:56 | MASTER-Kislovodsk | (04h 00m 22.65s , +51d 10m 56.9s) | C | 50 | 16.6 |\n 353 | 2023-06-08 20:56:09 | MASTER-Kislovodsk | (04h 00m 22.41s , +51d 09m 37.0s) | C | 60 | 16.5 |\n 447 | 2023-06-08 20:57:33 | MASTER-Kislovodsk | (04h 00m 25.68s , +51d 11m 09.4s) | C | 80 | 15.5 |\n 562 | 2023-06-08 20:57:33 | MASTER-Kislovodsk | (04h 00m 25.68s , +51d 11m 09.8s) | C | 310 | 17.3 | Coadd\n 561 | 2023-06-08 20:59:17 | MASTER-Kislovodsk | (04h 00m 19.58s , +51d 10m 12.5s) | C | 100 | 16.5 |\n 700 | 2023-06-08 21:01:21 | MASTER-Kislovodsk | (04h 00m 18.72s , +51d 11m 13.5s) | C | 130 | 17.3 |\n 2639 | 2023-06-08 21:33:16 | MASTER-Kislovodsk | (04h 00m 33.02s , +51d 10m 45.1s) | C | 180 | 17.0 |\n 2819 | 2023-06-08 21:33:16 | MASTER-Kislovodsk | (04h 00m 33.03s , +51d 10m 44.7s) | C | 540 | 17.6 | Coadd\n 2844 | 2023-06-08 21:36:40 | MASTER-Kislovodsk | (04h 00m 26.26s , +51d 09m 39.2s) | C | 180 | 17.1 |\n 3048 | 2023-06-08 21:40:04 | MASTER-Kislovodsk | (04h 00m 33.94s , +51d 09m 56.9s) | C | 180 | 17.3 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n",
"published": "2023-06-09T06:50:43.172780Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-09T06:50:43.172811Z",
"modified": "2023-06-09T06:50:43.179321Z",
"targets": []
},
{
"id": 209,
"topic": "gcn.circular",
"uuid": "3af0fce3-f9cc-4f44-b301-cd4bb8aea3d9",
"title": "LIGO/Virgo S230608ah: Global MASTER-Net observations report",
"submitter": "Hop gcn.circular",
"authors": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"data": {
"date": "23/06/09 06:40:59 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "33941",
"subject": "LIGO/Virgo S230608ah: Global MASTER-Net observations report"
},
"message_text": "V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko,\nG.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin\n(Lomonosov Moscow State University, SAI, Physics Department),\n\nR. Podesta, C.Lopez, F. Podesta, C.Francile\n(Observatorio Astronomico Felix Aguilar OAFA),\n\nR. Rebolo, M. Serra\n(The Instituto de Astrofisica de Canarias),\n\nD. Buckley\n(South African Astronomical Observatory),\n\nO.A. Gres, N.M. Budnev\n(Irkutsk State University, API),\n\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez\n(INAOE, Guillermo Haro Astrophysics Observatory),\n\nA. Tlatov, D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nA. Gabovich, V.Yurkov\n(Blagoveschensk Educational State University)\n\n\nMASTER-OAFA robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Argentina (OAFA observatory of San Juan National University) started inspect of the LIGO/Virgo S230608ah errorbox 12425 sec after notice time and 12487 sec after trigger time at 2023-06-08 22:34:29 UT, with upper limit up to 19.1 mag. Observations started at twilight. The observations began at zenith distance = 49 deg. The sun altitude is -11.7 deg.\n\nThe galactic latitude b = -49 deg., longitude l = 355 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/ligo_1.php?id\u0011966\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 12577 | 2023-06-08 22:34:29 | MASTER-OAFA | (09h 19m 45.04s , +10d 16m 10.7s) | C | 180 | 16.9 |\n 12788 | 2023-06-08 22:38:00 | MASTER-OAFA | (08h 40m 42.61s , +10d 16m 17.1s) | C | 180 | 17.0 |\n 13000 | 2023-06-08 22:41:31 | MASTER-OAFA | (08h 48m 45.49s , +10d 15m 35.1s) | C | 180 | 17.5 |\n 13469 | 2023-06-08 22:49:20 | MASTER-OAFA | (09h 19m 47.35s , +10d 16m 35.2s) | C | 180 | 18.5 |\n 13680 | 2023-06-08 22:52:52 | MASTER-OAFA | (08h 44m 18.11s , +12d 08m 44.5s) | C | 180 | 18.3 |\n 13891 | 2023-06-08 22:56:23 | MASTER-OAFA | (08h 52m 26.08s , +12d 10m 26.2s) | C | 180 | 18.4 |\n 14257 | 2023-06-08 23:02:28 | MASTER-OAFA | (09h 07m 57.66s , +12d 10m 02.0s) | C | 180 | 18.4 |\n 14468 | 2023-06-08 23:05:59 | MASTER-OAFA | (08h 44m 11.83s , +12d 10m 08.8s) | C | 180 | 18.5 |\n 14679 | 2023-06-08 23:09:31 | MASTER-OAFA | (08h 52m 29.57s , +12d 09m 23.8s) | C | 180 | 18.3 |\n 14891 | 2023-06-08 23:13:02 | MASTER-OAFA | (08h 59m 46.53s , +12d 08m 37.0s) | C | 180 | 18.3 |\n 15206 | 2023-06-08 23:18:17 | MASTER-OAFA | (08h 56m 08.80s , +10d 14m 26.6s) | C | 180 | 18.3 |\n 15417 | 2023-06-08 23:21:48 | MASTER-OAFA | (09h 04m 19.58s , +10d 16m 34.0s) | C | 180 | 18.3 |\n 15628 | 2023-06-08 23:25:20 | MASTER-OAFA | (09h 04m 05.84s , +14d 04m 36.7s) | C | 180 | 18.2 |\n 16396 | 2023-06-08 23:38:08 | MASTER-OAFA | (09h 04m 09.12s , +14d 04m 21.0s) | C | 180 | 18.3 |\n 16608 | 2023-06-08 23:41:39 | MASTER-OAFA | (09h 12m 25.13s , +14d 02m 50.7s) | C | 180 | 18.2 |\n 16819 | 2023-06-08 23:45:10 | MASTER-OAFA | (16h 30m 03.55s , +06d 27m 03.3s) | C | 180 | 17.8 |\n 17306 | 2023-06-08 23:53:17 | MASTER-OAFA | (16h 34m 37.94s , +08d 19m 53.2s) | C | 180 | 17.9 |\n 17517 | 2023-06-08 23:56:49 | MASTER-OAFA | (16h 42m 49.11s , +08d 19m 39.6s) | C | 180 | 17.8 |\n 17728 | 2023-06-09 00:00:20 | MASTER-OAFA | (16h 30m 06.68s , +06d 27m 57.5s) | C | 180 | 18.0 |\n 17939 | 2023-06-09 00:03:51 | MASTER-OAFA | (16h 38m 09.93s , +06d 26m 06.5s) | C | 180 | 17.8 |\n 18150 | 2023-06-09 00:07:22 | MASTER-OAFA | (16h 34m 43.29s , +08d 21m 49.1s) | C | 180 | 17.9 |\n 18750 | 2023-06-09 00:17:22 | MASTER-OAFA | (16h 32m 12.03s , +14d 02m 05.9s) | C | 180 | 17.2 |\n 18962 | 2023-06-09 00:20:53 | MASTER-OAFA | (16h 31m 42.03s , +12d 09m 50.3s) | C | 180 | 17.8 |\n 19467 | 2023-06-09 00:29:19 | MASTER-OAFA | (16h 32m 11.60s , +14d 03m 10.8s) | C | 180 | 17.9 |\n 20178 | 2023-06-09 00:41:10 | MASTER-OAFA | (16h 24m 58.34s , +10d 14m 43.5s) | C | 180 | 12.8 |\n 20737 | 2023-06-09 00:50:28 | MASTER-OAFA | (16h 24m 50.96s , +10d 16m 28.1s) | C | 180 | 18.4 |\n 20948 | 2023-06-09 00:54:00 | MASTER-OAFA | (16h 24m 50.99s , +10d 16m 28.3s) | C | 180 | 13.5 |\n 21159 | 2023-06-09 00:57:30 | MASTER-OAFA | (16h 40m 20.28s , +10d 13m 56.4s) | C | 180 | 17.7 |\n 21581 | 2023-06-09 01:04:32 | MASTER-OAFA | (16h 41m 55.07s , +04d 32m 14.2s) | C | 180 | 18.5 |\n 21792 | 2023-06-09 01:08:04 | MASTER-OAFA | (16h 50m 01.18s , +04d 33m 29.8s) | C | 180 | 18.1 |\n 22696 | 2023-06-09 01:23:08 | MASTER-OAFA | (16h 41m 54.58s , +04d 32m 15.4s) | C | 180 | 18.6 |\n 22908 | 2023-06-09 01:26:39 | MASTER-OAFA | (16h 49m 59.51s , +04d 33m 16.7s) | C | 180 | 18.6 |\n 23785 | 2023-06-09 01:41:16 | MASTER-OAFA | (16h 41m 23.91s , +15d 57m 46.8s) | C | 180 | 18.0 |\n 23996 | 2023-06-09 01:44:48 | MASTER-OAFA | (16h 45m 24.91s , +06d 26m 12.7s) | C | 180 | 18.8 |\n 24449 | 2023-06-09 01:52:21 | MASTER-OAFA | (16h 41m 21.52s , +15d 57m 59.8s) | C | 180 | 18.3 |\n 25044 | 2023-06-09 02:02:16 | MASTER-OAFA | (16h 50m 02.38s , +08d 19m 55.8s) | C | 180 | 18.6 |\n 25256 | 2023-06-09 02:05:48 | MASTER-OAFA | (16h 58m 11.42s , +08d 21m 09.1s) | C | 180 | 18.7 |\n 25468 | 2023-06-09 02:09:19 | MASTER-OAFA | (16h 39m 37.04s , +14d 03m 02.8s) | C | 180 | 18.6 |\n 25679 | 2023-06-09 02:12:50 | MASTER-OAFA | (16h 47m 51.86s , +14d 03m 49.8s) | C | 180 | 18.6 |\n 25890 | 2023-06-09 02:16:21 | MASTER-OAFA | (16h 50m 05.92s , +08d 20m 47.3s) | C | 180 | 18.6 |\n 26100 | 2023-06-09 02:19:52 | MASTER-OAFA | (16h 58m 05.50s , +08d 19m 30.2s) | C | 180 | 18.8 |\n 26312 | 2023-06-09 02:23:23 | MASTER-OAFA | (16h 39m 32.75s , +02d 39m 54.3s) | C | 180 | 18.9 |\n 26844 | 2023-06-09 02:32:16 | MASTER-OAFA | (16h 25m 28.81s , +15d 58m 24.4s) | C | 180 | 18.7 |\n 27206 | 2023-06-09 02:38:17 | MASTER-OAFA | (16h 47m 29.68s , +02d 37m 43.2s) | C | 180 | 18.8 |\n 27418 | 2023-06-09 02:41:50 | MASTER-OAFA | (16h 17m 14.77s , +15d 56m 35.6s) | C | 180 | 18.8 |\n 27629 | 2023-06-09 02:45:21 | MASTER-OAFA | (16h 25m 31.84s , +15d 58m 01.7s) | C | 180 | 18.7 |\n 27842 | 2023-06-09 02:48:53 | MASTER-OAFA | (16h 16m 08.41s , +12d 10m 33.0s) | C | 180 | 18.8 |\n 28053 | 2023-06-09 02:52:24 | MASTER-OAFA | (16h 24m 14.54s , +12d 09m 22.5s) | C | 180 | 18.8 |\n 28264 | 2023-06-09 02:55:56 | MASTER-OAFA | (16h 11m 25.11s , +17d 51m 42.3s) | C | 180 | 19.1 |\n 28697 | 2023-06-09 03:03:09 | MASTER-OAFA | (16h 16m 08.48s , +12d 08m 43.0s) | C | 180 | 18.8 |\n 28909 | 2023-06-09 03:06:40 | MASTER-OAFA | (16h 24m 16.91s , +12d 09m 52.5s) | C | 180 | 18.8 |\n 29119 | 2023-06-09 03:10:11 | MASTER-OAFA | (16h 11m 22.37s , +17d 51m 05.9s) | C | 180 | 18.9 |\n 29331 | 2023-06-09 03:13:42 | MASTER-OAFA | (16h 19m 51.02s , +17d 52m 10.5s) | C | 180 | 18.7 |\n 29541 | 2023-06-09 03:17:13 | MASTER-OAFA | (16h 27m 21.26s , +17d 52m 17.2s) | C | 180 | 18.6 |\n 29752 | 2023-06-09 03:20:44 | MASTER-OAFA | (16h 35m 52.73s , +17d 51m 03.9s) | C | 180 | 18.4 |\n 29964 | 2023-06-09 03:24:15 | MASTER-OAFA | (15h 57m 48.76s , +25d 27m 10.4s) | C | 180 | 18.5 |\n 30174 | 2023-06-09 03:27:46 | MASTER-OAFA | (16h 06m 39.41s , +25d 28m 17.1s) | C | 180 | 18.4 |\n 30386 | 2023-06-09 03:31:17 | MASTER-OAFA | (16h 27m 23.14s , +17d 50m 22.6s) | C | 180 | 18.5 |\n 30597 | 2023-06-09 03:34:48 | MASTER-OAFA | (16h 35m 51.35s , +17d 51m 29.1s) | C | 180 | 18.5 |\n 31051 | 2023-06-09 03:42:23 | MASTER-OAFA | (16h 06m 37.05s , +25d 28m 35.5s) | C | 180 | 18.4 |\n 31263 | 2023-06-09 03:45:54 | MASTER-OAFA | (15h 56m 46.50s , +27d 20m 45.9s) | C | 180 | 18.4 |\n 31504 | 2023-06-09 03:49:55 | MASTER-OAFA | (16h 05m 55.62s , +27d 20m 40.7s) | C | 180 | 18.4 |\n 32139 | 2023-06-09 04:00:30 | MASTER-OAFA | (15h 56m 46.30s , +27d 21m 32.2s) | C | 180 | 18.4 |\n 33144 | 2023-06-09 04:17:16 | MASTER-OAFA | (22h 30m 08.47s , -48d 51m 09.1s) | C | 180 | 17.8 |\n 33356 | 2023-06-09 04:20:48 | MASTER-OAFA | (22h 40m 55.72s , -48d 50m 33.9s) | C | 180 | 17.9 |\n 33990 | 2023-06-09 04:31:22 | MASTER-OAFA | (22h 30m 05.37s , -48d 51m 14.3s) | C | 180 | 17.8 |\n 34202 | 2023-06-09 04:34:54 | MASTER-OAFA | (22h 41m 01.83s , -48d 51m 14.2s) | C | 180 | 18.1 |\n 34624 | 2023-06-09 04:41:56 | MASTER-OAFA | (22h 59m 03.30s , -46d 56m 02.6s) | C | 180 | 18.0 |\n 34835 | 2023-06-09 04:45:27 | MASTER-OAFA | (23h 10m 33.70s , -46d 56m 54.8s) | C | 180 | 18.1 |\n 35432 | 2023-06-09 04:55:24 | MASTER-OAFA | (22h 59m 04.16s , -46d 57m 34.5s) | C | 180 | 18.1 |\n 36640 | 2023-06-09 05:15:32 | MASTER-OAFA | (22h 37m 01.29s , -46d 56m 51.1s) | C | 180 | 18.1 |\n 36852 | 2023-06-09 05:19:03 | MASTER-OAFA | (22h 48m 34.40s , -46d 55m 28.0s) | C | 180 | 18.0 |\n 37590 | 2023-06-09 05:31:21 | MASTER-OAFA | (22h 48m 32.01s , -46d 55m 10.5s) | C | 180 | 18.2 |\n 37802 | 2023-06-09 05:34:53 | MASTER-OAFA | (22h 34m 42.25s , -41d 14m 52.3s) | C | 180 | 17.6 |\n 38013 | 2023-06-09 05:38:24 | MASTER-OAFA | (22h 45m 22.09s , -41d 14m 55.5s) | C | 180 | 17.6 |\n 38224 | 2023-06-09 05:41:56 | MASTER-OAFA | (22h 02m 28.59s , -37d 25m 54.6s) | C | 180 | 17.7 |\n 38664 | 2023-06-09 05:49:15 | MASTER-OAFA | (22h 34m 43.28s , -41d 13m 46.4s) | C | 180 | 17.5 |\n 38875 | 2023-06-09 05:52:47 | MASTER-OAFA | (22h 45m 15.79s , -41d 12m 56.2s) | C | 180 | 17.6 |\n 39086 | 2023-06-09 05:56:18 | MASTER-OAFA | (22h 02m 32.07s , -37d 25m 06.0s) | C | 180 | 17.5 |\n 39297 | 2023-06-09 05:59:49 | MASTER-OAFA | (22h 12m 26.75s , -37d 26m 18.4s) | C | 180 | 17.5 |\n 39509 | 2023-06-09 06:03:20 | MASTER-OAFA | (21h 49m 39.75s , -35d 30m 14.7s) | C | 180 | 17.6 |\n 39719 | 2023-06-09 06:06:51 | MASTER-OAFA | (21h 59m 25.79s , -35d 31m 49.2s) | C | 180 | 17.5 |\n 39931 | 2023-06-09 06:10:22 | MASTER-OAFA | (21h 43m 26.57s , -37d 24m 40.9s) | C | 180 | 17.7 |\n 40344 | 2023-06-09 06:17:16 | MASTER-OAFA | (21h 49m 42.37s , -35d 30m 45.7s) | C | 180 | 17.6 |\n 40556 | 2023-06-09 06:20:47 | MASTER-OAFA | (21h 59m 22.80s , -35d 31m 56.5s) | C | 180 | 17.6 |\n 41187 | 2023-06-09 06:31:18 | MASTER-OAFA | (21h 58m 01.03s , -39d 17m 57.1s) | C | 180 | 17.7 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n",
"published": "2023-06-09T06:41:03.286835Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-09T06:41:03.286855Z",
"modified": "2023-06-09T06:41:03.292939Z",
"targets": []
},
{
"id": 200,
"topic": "gcn.circular",
"uuid": "6fda7440-1b2f-4dcd-b4ef-ccdbd2ffc396",
"title": "LIGO/Virgo/KAGRA S230608as: Identification of a GW compact binary merger candidate",
"submitter": "Hop gcn.circular",
"authors": "Jessica Irwin at University of Glasgow <jessica.irwin@ligo.org>",
"data": {
"date": "23/06/08 21:39:20 GMT",
"from": "Jessica Irwin at University of Glasgow <jessica.irwin@ligo.org>",
"title": "GCN CIRCULAR",
"number": "33938",
"subject": "LIGO/Virgo/KAGRA S230608as: Identification of a GW compact binary merger candidate"
},
"message_text": "The LIGO Scientific Collaboration, the Virgo Collaboration, and the\nKAGRA Collaboration report:\n\nWe identified the compact binary merger candidate S230608as during\nreal-time processing of data from LIGO Hanford Observatory (H1) and\nLIGO Livingston Observatory (L1) at 2023-06-08 20:50:47.161 UTC (GPS\ntime: 1370292665.161). The candidate was found by the CWB [1], MBTA\n[2], GstLAL [3], and SPIIR [4] analysis pipelines.\n\nS230608as is an event of interest because its false alarm rate, as\nestimated by the online analysis, is 1.4e-10 Hz, or about one in 1e2\nyears. The event's properties can be found at this URL:\n\nhttps://gracedb.ligo.org/superevents/S230608as\n\nThe classification of the GW signal, in order of descending\nprobability, is BBH (>99%), Terrestrial (<1%), NSBH (<1%), or BNS\n(<1%).\n\nAssuming the candidate is astrophysical in origin, the probability\nthat the lighter compact object is consistent with a neutron star mass\n(HasNS) is <1%. [5] Using the masses and spins inferred from the\nsignal, the probability of matter outside the final compact object\n(HasRemnant) is <1%. [5] Both HasNS and HasRemnant consider the\nsupport of several neutron star equations of state. The probability\nthat any one of the binary components lie between 3 to 5 solar mass\n(HasMassgap) is <1%.\n\nTwo sky maps are available at this time and can be retrieved from the\nGraceDB event page:\n * bayestar.multiorder.fits,1, an initial localization generated by\nBAYESTAR [6], distributed via GCN notice about 24 seconds after the\ncandidate event time.\n * bayestar.multiorder.fits,2, an initial localization generated by\nBAYESTAR [6], distributed via GCN notice about 41 minutes after the\ncandidate event time.\n\nThe preferred sky map at this time is bayestar.multiorder.fits,2. For\nthe bayestar.multiorder.fits,2 sky map, the 90% credible region is\n2217 deg2. Marginalized over the whole sky, the a posteriori\nluminosity distance estimate is 3193 +/- 956 Mpc (a posteriori mean\n+/- standard deviation).\n\nFor further information about analysis methodology and the contents of\nthis alert, refer to the LIGO/Virgo/KAGRA Public Alerts User Guide\n<https://emfollow.docs.ligo.org/userguide/>.\n\n [1] Klimenko et al. PRD 93, 042004 (2016)\n [2] Aubin et al. CQG 38, 095004 (2021)\n [3] Tsukada et al. arXiv:2305.06286 (2023) and Ewing et al.\narXiv:2305.05625 (2023)\n [4] Chu et al. PRD 105, 024023 (2022)\n [5] Chatterjee et al. ApJ 896, 54 (2020)\n [6] Singer & Price PRD 93, 024013 (2016)\n\n",
"published": "2023-06-08T21:39:34.648344Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-08T21:39:34.648368Z",
"modified": "2023-06-08T21:39:34.654672Z",
"targets": []
}
]
},
{
"event_id": "S230608aw",
"sequences": [
{
"id": 57,
"sequence_number": 1,
"sequence_type": "PRELIMINARY",
"message": {
"id": 201,
"topic": "igwn.gwalert",
"uuid": "0d9b194a-7363-4cbf-87c1-0337af5ed0ee",
"title": "S230608aw - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230608aw/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230608aw/view/"
},
"event": {
"far": 2.44363e-06,
"time": "2023-06-08T23:47:27.292Z",
"group": "Burst",
"search": "BBH",
"area_50": 293.75277582390845,
"area_90": 1001.2773187369219,
"duration": 0.044154,
"pipeline": "CWB",
"properties": {},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "cd4a40fef4bdc8c4bd4d1e6257189bc1",
"classification": {},
"skymap_version": 0,
"central_frequency": 117.343483
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-06-08T23:48:31Z",
"superevent_id": "S230608aw",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-08T23:48:32.079801Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-08T23:48:32.079823Z",
"modified": "2023-06-08T23:48:32.087837Z"
}
},
{
"id": 58,
"sequence_number": 2,
"sequence_type": "PRELIMINARY",
"message": {
"id": 202,
"topic": "igwn.gwalert",
"uuid": "c9d09b3e-3995-4016-a2b1-dcf5da3e7e13",
"title": "S230608aw - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230608aw/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230608aw/view/"
},
"event": {
"far": 2.44363e-06,
"time": "2023-06-08T23:47:27.292Z",
"group": "Burst",
"search": "BBH",
"area_50": 293.75277582390845,
"area_90": 1001.2773187369219,
"duration": 0.044154,
"pipeline": "CWB",
"properties": {},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "cd4a40fef4bdc8c4bd4d1e6257189bc1",
"classification": {},
"skymap_version": 0,
"central_frequency": 117.343483
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-06-08T23:53:07Z",
"superevent_id": "S230608aw",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-08T23:53:08.785942Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-08T23:53:08.785963Z",
"modified": "2023-06-08T23:53:08.792676Z"
}
}
],
"references": []
},
{
"event_id": "S230609a",
"sequences": [
{
"id": 59,
"sequence_number": 1,
"sequence_type": "PRELIMINARY",
"message": {
"id": 204,
"topic": "igwn.gwalert",
"uuid": "e5a28eb1-af3b-40ff-89fa-6c9d8243b543",
"title": "S230609a - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230609a/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230609a/view/"
},
"event": {
"far": 1.234089791613435e-07,
"time": "2023-06-09T01:08:24.419Z",
"group": "CBC",
"search": "AllSky",
"area_50": 980.7146244292487,
"area_90": 3588.8196269229497,
"duration": null,
"pipeline": "gstlal",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.04264138160689884,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "76e11fa3cae1fc5ddbfcdb4b0de207c5",
"classification": {
"BBH": 0.9287134220712912,
"BNS": 3.3995738270146023e-15,
"NSBH": 2.449586729888665e-13,
"Terrestrial": 0.07128657792846049
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-06-09T01:08:46Z",
"superevent_id": "S230609a",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-09T01:08:47.820752Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-09T01:08:47.820774Z",
"modified": "2023-06-09T01:08:47.828414Z"
}
},
{
"id": 60,
"sequence_number": 2,
"sequence_type": "PRELIMINARY",
"message": {
"id": 205,
"topic": "igwn.gwalert",
"uuid": "4923bf7d-6c58-4e3a-b207-3168067efb00",
"title": "S230609a - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230609a/files/bayestar.multiorder.fits,1",
"gracedb": "https://gracedb.ligo.org/superevents/S230609a/view/"
},
"event": {
"far": 7.991229142413145e-08,
"time": "2023-06-09T01:08:24.419Z",
"group": "CBC",
"search": "AllSky",
"area_50": 963.5091047024198,
"area_90": 3506.568849692256,
"duration": null,
"pipeline": "gstlal",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.04264138160689884,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "6522eb77fda3ff91eb12012530e43eba",
"classification": {
"BBH": 0.9555122708185579,
"BNS": 2.5712075474648447e-15,
"NSBH": 1.863059407079187e-13,
"Terrestrial": 0.04448772918125321
},
"skymap_version": 1,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-06-09T01:13:24Z",
"superevent_id": "S230609a",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-09T01:13:25.624197Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-09T01:13:25.624220Z",
"modified": "2023-06-09T01:13:25.630335Z"
}
}
],
"references": [
{
"id": 210,
"topic": "gcn.circular",
"uuid": "dd4234b2-e2c1-4c2f-be66-b92d6b8c7868",
"title": "LIGO/Virgo S230609a: Global MASTER-Net observations report",
"submitter": "Hop gcn.circular",
"authors": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"data": {
"date": "23/06/09 06:42:00 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "33942",
"subject": "LIGO/Virgo S230609a: Global MASTER-Net observations report"
},
"message_text": "V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko,\nG.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin\n(Lomonosov Moscow State University, SAI, Physics Department),\n\nR. Podesta, C.Lopez, F. Podesta, C.Francile\n(Observatorio Astronomico Felix Aguilar OAFA),\n\nR. Rebolo, M. Serra\n(The Instituto de Astrofisica de Canarias),\n\nD. Buckley\n(South African Astronomical Observatory),\n\nO.A. Gres, N.M. Budnev\n(Irkutsk State University, API),\n\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez\n(INAOE, Guillermo Haro Astrophysics Observatory),\n\nA. Tlatov, D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nA. Gabovich, V.Yurkov\n(Blagoveschensk Educational State University)\n\n\nMASTER-OAFA robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Argentina (OAFA observatory of San Juan National University) started inspect of the LIGO/Virgo S230609a errorbox 151 sec after notice time and 195 sec after trigger time at 2023-06-09 01:11:39 UT, with upper limit up to 18.4 mag. The observations began at zenith distance = 68 deg. The sun altitude is -44.6 deg.\n\nThe galactic latitude b = 78 deg., longitude l = 183 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/ligo_1.php?id\u0011978\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 215 | 2023-06-09 01:11:39 | MASTER-OAFA | (11h 58m 05.57s , +32d 24m 15.6s) | C | 40 | 16.6 |\n 292 | 2023-06-09 01:12:50 | MASTER-OAFA | (11h 58m 04.99s , +32d 25m 15.2s) | C | 50 | 16.8 |\n 383 | 2023-06-09 01:14:11 | MASTER-OAFA | (11h 58m 10.26s , +32d 24m 16.8s) | C | 70 | 17.3 |\n 494 | 2023-06-09 01:15:53 | MASTER-OAFA | (11h 58m 05.45s , +32d 23m 17.9s) | C | 90 | 17.3 |\n 626 | 2023-06-09 01:17:55 | MASTER-OAFA | (11h 58m 10.81s , +32d 23m 41.5s) | C | 110 | 17.3 |\n 783 | 2023-06-09 01:20:16 | MASTER-OAFA | (11h 58m 08.17s , +32d 24m 52.4s) | C | 140 | 17.3 |\n 9994 | 2023-06-09 03:53:27 | MASTER-OAFA | (22h 23m 05.32s , -50d 44m 59.6s) | C | 180 | 17.8 |\n 10205 | 2023-06-09 03:56:58 | MASTER-OAFA | (22h 35m 39.84s , -50d 43m 47.4s) | C | 180 | 17.8 |\n 10844 | 2023-06-09 04:07:38 | MASTER-OAFA | (22h 23m 08.57s , -50d 44m 10.4s) | C | 180 | 17.9 |\n 11422 | 2023-06-09 04:17:16 | MASTER-OAFA | (22h 30m 08.47s , -48d 51m 09.1s) | C | 180 | 17.8 |\n 11634 | 2023-06-09 04:20:48 | MASTER-OAFA | (22h 40m 55.72s , -48d 50m 33.9s) | C | 180 | 17.9 |\n 11845 | 2023-06-09 04:24:19 | MASTER-OAFA | (22h 52m 56.76s , -48d 49m 46.3s) | C | 180 | 18.2 |\n 12268 | 2023-06-09 04:31:22 | MASTER-OAFA | (22h 30m 05.37s , -48d 51m 14.3s) | C | 180 | 17.8 |\n 12480 | 2023-06-09 04:34:54 | MASTER-OAFA | (22h 41m 01.83s , -48d 51m 14.2s) | C | 180 | 18.1 |\n 12691 | 2023-06-09 04:38:24 | MASTER-OAFA | (22h 53m 00.37s , -48d 49m 53.3s) | C | 180 | 18.1 |\n 12902 | 2023-06-09 04:41:56 | MASTER-OAFA | (22h 59m 03.30s , -46d 56m 02.6s) | C | 180 | 18.0 |\n 13113 | 2023-06-09 04:45:27 | MASTER-OAFA | (23h 10m 33.70s , -46d 56m 54.8s) | C | 180 | 18.1 |\n 13324 | 2023-06-09 04:48:58 | MASTER-OAFA | (23h 03m 52.30s , -48d 50m 46.0s) | C | 180 | 18.3 |\n 13710 | 2023-06-09 04:55:24 | MASTER-OAFA | (22h 59m 04.16s , -46d 57m 34.5s) | C | 180 | 18.1 |\n 14072 | 2023-06-09 05:01:26 | MASTER-OAFA | (23h 03m 50.57s , -48d 51m 28.4s) | C | 180 | 18.4 |\n 14284 | 2023-06-09 05:04:57 | MASTER-OAFA | (23h 15m 56.06s , -48d 49m 51.2s) | C | 180 | 18.1 |\n 14495 | 2023-06-09 05:08:29 | MASTER-OAFA | (22h 46m 48.83s , -50d 43m 18.7s) | C | 180 | 18.3 |\n 14707 | 2023-06-09 05:12:00 | MASTER-OAFA | (22h 59m 25.32s , -50d 44m 30.6s) | C | 180 | 18.3 |\n 14918 | 2023-06-09 05:15:32 | MASTER-OAFA | (22h 37m 01.29s , -46d 56m 51.1s) | C | 180 | 18.1 |\n 15130 | 2023-06-09 05:19:03 | MASTER-OAFA | (22h 48m 34.40s , -46d 55m 28.0s) | C | 180 | 18.0 |\n 15341 | 2023-06-09 05:22:34 | MASTER-OAFA | (22h 46m 52.36s , -50d 44m 46.2s) | C | 180 | 18.3 |\n 15552 | 2023-06-09 05:26:06 | MASTER-OAFA | (22h 59m 26.25s , -50d 43m 53.7s) | C | 180 | 18.4 |\n 15868 | 2023-06-09 05:31:21 | MASTER-OAFA | (22h 48m 32.01s , -46d 55m 10.5s) | C | 180 | 18.2 |\n 16080 | 2023-06-09 05:34:53 | MASTER-OAFA | (22h 34m 42.25s , -41d 14m 52.3s) | C | 180 | 17.6 |\n 16291 | 2023-06-09 05:38:24 | MASTER-OAFA | (22h 45m 22.09s , -41d 14m 55.5s) | C | 180 | 17.6 |\n 16502 | 2023-06-09 05:41:56 | MASTER-OAFA | (22h 02m 28.59s , -37d 25m 54.6s) | C | 180 | 17.7 |\n 16942 | 2023-06-09 05:49:15 | MASTER-OAFA | (22h 34m 43.28s , -41d 13m 46.4s) | C | 180 | 17.5 |\n 17153 | 2023-06-09 05:52:47 | MASTER-OAFA | (22h 45m 15.79s , -41d 12m 56.2s) | C | 180 | 17.6 |\n 17364 | 2023-06-09 05:56:18 | MASTER-OAFA | (22h 02m 32.07s , -37d 25m 06.0s) | C | 180 | 17.5 |\n 17575 | 2023-06-09 05:59:49 | MASTER-OAFA | (22h 12m 26.75s , -37d 26m 18.4s) | C | 180 | 17.5 |\n 17787 | 2023-06-09 06:03:20 | MASTER-OAFA | (21h 49m 39.75s , -35d 30m 14.7s) | C | 180 | 17.6 |\n 17997 | 2023-06-09 06:06:51 | MASTER-OAFA | (21h 59m 25.79s , -35d 31m 49.2s) | C | 180 | 17.5 |\n 18209 | 2023-06-09 06:10:22 | MASTER-OAFA | (21h 43m 26.57s , -37d 24m 40.9s) | C | 180 | 17.7 |\n 18622 | 2023-06-09 06:17:16 | MASTER-OAFA | (21h 49m 42.37s , -35d 30m 45.7s) | C | 180 | 17.6 |\n 18834 | 2023-06-09 06:20:47 | MASTER-OAFA | (21h 59m 22.80s , -35d 31m 56.5s) | C | 180 | 17.6 |\n 19465 | 2023-06-09 06:31:18 | MASTER-OAFA | (21h 58m 01.03s , -39d 17m 57.1s) | C | 180 | 17.7 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n",
"published": "2023-06-09T06:42:05.406914Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-09T06:42:05.406933Z",
"modified": "2023-06-09T06:42:05.413025Z",
"targets": []
}
]
},
{
"event_id": "S230609u",
"sequences": [
{
"id": 61,
"sequence_number": 1,
"sequence_type": "PRELIMINARY",
"message": {
"id": 211,
"topic": "igwn.gwalert",
"uuid": "0171d28e-6aff-4c6c-9cb9-7faac9cc59c3",
"title": "S230609u - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230609u/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230609u/view/"
},
"event": {
"far": 2.599150680025193e-08,
"time": "2023-06-09T06:49:58.279Z",
"group": "CBC",
"search": "AllSky",
"area_50": 517.4245322726845,
"area_90": 2438.14803933844,
"duration": null,
"pipeline": "gstlal",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.0,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": true,
"skymap_hash": "88abb40155bd16704aae8b41b15ab0e0",
"classification": {
"BBH": 0.9854179898562037,
"BNS": 5.7180833786362945e-21,
"NSBH": 4.29703807774404e-19,
"Terrestrial": 0.014582010143796342
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-06-09T06:50:25Z",
"superevent_id": "S230609u",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-09T06:50:27.030601Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-09T06:50:27.030641Z",
"modified": "2023-06-09T06:50:27.049920Z"
}
},
{
"id": 62,
"sequence_number": 2,
"sequence_type": "PRELIMINARY",
"message": {
"id": 213,
"topic": "igwn.gwalert",
"uuid": "9d04a7e2-caf9-4147-8ce1-9526be9e68e3",
"title": "S230609u - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230609u/files/bayestar.multiorder.fits,1",
"gracedb": "https://gracedb.ligo.org/superevents/S230609u/view/"
},
"event": {
"far": 1.004153e-08,
"time": "2023-06-09T06:49:58.279Z",
"group": "CBC",
"search": "AllSky",
"area_50": 382.0884319823838,
"area_90": 1916.9466856623053,
"duration": null,
"pipeline": "MBTA",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.0,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": true,
"skymap_hash": "088860d78497c568dc77dbe9d08b6594",
"classification": {
"BBH": 0.961466981,
"BNS": 0.0,
"NSBH": 0.0,
"Terrestrial": 0.038533019
},
"skymap_version": 1,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-06-09T06:55:06Z",
"superevent_id": "S230609u",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-09T06:55:06.912807Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-09T06:55:06.912847Z",
"modified": "2023-06-09T06:55:06.919277Z"
}
},
{
"id": 63,
"sequence_number": 3,
"sequence_type": "INITIAL",
"message": {
"id": 215,
"topic": "igwn.gwalert",
"uuid": "371ba6a1-b000-4949-b27b-a465169fc936",
"title": "S230609u - INITIAL",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230609u/files/bayestar.multiorder.fits,1",
"gracedb": "https://gracedb.ligo.org/superevents/S230609u/view/"
},
"event": {
"far": 1.004153e-08,
"time": "2023-06-09T06:49:58.279Z",
"group": "CBC",
"search": "AllSky",
"area_50": 382.0884319823838,
"area_90": 1916.9466856623053,
"duration": null,
"pipeline": "MBTA",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.0,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": true,
"skymap_hash": "088860d78497c568dc77dbe9d08b6594",
"classification": {
"BBH": 0.961466981,
"BNS": 0.0,
"NSBH": 0.0,
"Terrestrial": 0.038533019
},
"skymap_version": 1,
"central_frequency": null
},
"alert_type": "INITIAL",
"sequence_num": 3,
"time_created": "2023-06-09T07:32:55Z",
"superevent_id": "S230609u",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-09T07:32:55.823061Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-09T07:32:55.823098Z",
"modified": "2023-06-09T07:32:55.834421Z"
}
},
{
"id": 66,
"sequence_number": 4,
"sequence_type": "UPDATE",
"message": {
"id": 225,
"topic": "igwn.gwalert",
"uuid": "61a85329-13a5-4572-8744-9594cf05f710",
"title": "S230609u - UPDATE",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230609u/files/bayestar.multiorder.fits,2",
"gracedb": "https://gracedb.ligo.org/superevents/S230609u/view/"
},
"event": {
"far": 1.004153e-08,
"time": "2023-06-09T06:49:58.279Z",
"group": "CBC",
"search": "AllSky",
"area_50": 344.6874089176612,
"area_90": 1286.427334697416,
"duration": null,
"pipeline": "MBTA",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.0,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": true,
"skymap_hash": "28fd944d8310f0f51076b3379e069d2f",
"classification": {
"BBH": 0.961466981,
"BNS": 0.0,
"NSBH": 0.0,
"Terrestrial": 0.038533019
},
"skymap_version": 2,
"central_frequency": null
},
"alert_type": "UPDATE",
"sequence_num": 4,
"time_created": "2023-06-11T08:31:25Z",
"superevent_id": "S230609u",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-11T08:31:26.992135Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-11T08:31:26.992157Z",
"modified": "2023-06-11T08:31:26.999967Z"
}
},
{
"id": 67,
"sequence_number": 5,
"sequence_type": "UPDATE",
"message": {
"id": 226,
"topic": "igwn.gwalert",
"uuid": "500ddcf3-0102-4297-afdd-9487be60b508",
"title": "S230609u - UPDATE",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230609u/files/bayestar.multiorder.fits,2",
"gracedb": "https://gracedb.ligo.org/superevents/S230609u/view/"
},
"event": {
"far": 1.004153e-08,
"time": "2023-06-09T06:49:58.279Z",
"group": "CBC",
"search": "AllSky",
"area_50": 344.6874089176612,
"area_90": 1286.427334697416,
"duration": null,
"pipeline": "MBTA",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.0,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": true,
"skymap_hash": "28fd944d8310f0f51076b3379e069d2f",
"classification": {
"BBH": 0.961466981,
"BNS": 0.0,
"NSBH": 0.0,
"Terrestrial": 0.038533019
},
"skymap_version": 2,
"central_frequency": null
},
"alert_type": "UPDATE",
"sequence_num": 5,
"time_created": "2023-06-11T08:32:36Z",
"superevent_id": "S230609u",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-11T08:32:37.160644Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-11T08:32:37.160665Z",
"modified": "2023-06-11T08:32:37.166390Z"
}
}
],
"references": [
{
"id": 227,
"topic": "gcn.circular",
"uuid": "51423243-9b8b-4ec3-a699-2b4a98207097",
"title": "LIGO/Virgo/KAGRA S230609u: Updated Sky localization",
"submitter": "Hop gcn.circular",
"authors": "Aditya Vijaykumar <aditya.vijaykumar@ligo.org>",
"data": {
"date": "23/06/11 08:36:08 GMT",
"from": "Aditya Vijaykumar <aditya.vijaykumar@ligo.org>",
"title": "GCN CIRCULAR",
"number": "33950",
"subject": "LIGO/Virgo/KAGRA S230609u: Updated Sky localization"
},
"message_text": "The LIGO Scientific Collaboration, the Virgo Collaboration, and the KAGRA Collaboration report:\n\nWe have conducted further analysis of the LIGO Hanford Observatory (H1) and LIGO Livingston Observatory (L1) data around the time of the compact binary merger (CBC) candidate S230609u (GCN Circular 33944). Parameter estimation has been performed using Bilby [1] and a new sky map, Bilby.multiorder.fits,0, distributed via GCN Notice, is available for retrieval from the GraceDB event page:\n\nhttps://gracedb.ligo.org/superevents/S230609u\n\nFor the Bilby.multiorder.fits,0 sky map, the 90% credible region is 1287 deg2. Marginalized over the whole sky, the a posteriori luminosity distance estimate is 3390 +/- 1125 Mpc (a posteriori mean +/- standard deviation).\n\nFor further information about analysis methodology and the contents of this alert, refer to the LIGO/Virgo/KAGRA Public Alerts User Guide <https://emfollow.docs.ligo.org/userguide/>.\n\n\n [1] Ashton et al. ApJS 241, 27 (2019)\n\n",
"published": "2023-06-11T08:36:20.609699Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-11T08:36:20.609716Z",
"modified": "2023-06-11T08:36:20.616779Z",
"targets": []
},
{
"id": 221,
"topic": "gcn.circular",
"uuid": "050c8015-4b4c-41f1-9ccd-2f0024866e50",
"title": "LIGO/Virgo S230609u: Global MASTER-Net observations report",
"submitter": "Hop gcn.circular",
"authors": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"data": {
"date": "23/06/10 06:34:32 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "33949",
"subject": "LIGO/Virgo S230609u: Global MASTER-Net observations report"
},
"message_text": "V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko,\nG.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin\n(Lomonosov Moscow State University, SAI, Physics Department),\n\nR. Podesta, C.Lopez, F. Podesta, C.Francile\n(Observatorio Astronomico Felix Aguilar OAFA),\n\nR. Rebolo, M. Serra\n(The Instituto de Astrofisica de Canarias),\n\nD. Buckley\n(South African Astronomical Observatory),\n\nO.A. Gres, N.M. Budnev\n(Irkutsk State University, API),\n\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez\n(INAOE, Guillermo Haro Astrophysics Observatory),\n\nA. Tlatov, D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nA. Gabovich, V.Yurkov\n(Blagoveschensk Educational State University)\n\n\nMASTER-SAAO robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in South Africa (South African Astronomical Observatory) started inspect of the LIGO/Virgo S230609u errorbox 39392 sec after notice time and 39462 sec after trigger time at 2023-06-09 17:47:40 UT, with upper limit up to 18.5 mag. The observations began at zenith distance = 74 deg. The sun altitude is -26.1 deg.\n\nMASTER-OAFA robotic telescope located in Argentina (OAFA observatory of San Juan National University) started inspect of the LIGO/Virgo S230609u errorbox 58099 sec after notice time and 58169 sec after trigger time at 2023-06-09 22:59:27 UT, with upper limit up to 18.2 mag. Observations started at twilight. The observations began at zenith distance = 70 deg. The sun altitude is -16.8 deg.\n\nThe galactic latitude b = -17 deg., longitude l = 234 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/ligo_1.php?id\u0011982\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 39553 | 2023-06-09 17:47:40 | MASTER-SAAO | (06h 31m 28.35s , -25d 17m 39.4s) | C | 180 | 18.5 |\n 39553 | 2023-06-09 17:47:40 | MASTER-SAAO | (06h 30m 41.01s , -25d 17m 37.0s) | C | 180 | 17.0 |\n 58259 | 2023-06-09 22:59:27 | MASTER-OAFA | (06h 10m 29.24s , -26d 46m 58.7s) | C | 180 | 17.6 |\n 58744 | 2023-06-09 23:07:31 | MASTER-OAFA | (06h 21m 14.48s , -24d 53m 39.3s) | C | 180 | 18.1 |\n 59325 | 2023-06-09 23:17:12 | MASTER-OAFA | (06h 34m 31.72s , -28d 40m 07.1s) | C | 180 | 18.2 |\n 59537 | 2023-06-09 23:20:44 | MASTER-OAFA | (06h 43m 40.53s , -28d 38m 44.4s) | C | 180 | 17.6 |\n 59755 | 2023-06-09 23:24:23 | MASTER-OAFA | (06h 32m 35.82s , -32d 29m 12.1s) | C | 180 | 17.8 |\n 60125 | 2023-06-09 23:30:33 | MASTER-OAFA | (06h 34m 33.29s , -28d 39m 18.4s) | C | 180 | 17.8 |\n 60337 | 2023-06-09 23:34:04 | MASTER-OAFA | (06h 43m 43.48s , -28d 40m 52.6s) | C | 180 | 17.8 |\n 60568 | 2023-06-09 23:37:55 | MASTER-OAFA | (06h 32m 42.22s , -32d 27m 43.6s) | C | 180 | 17.5 |\n 61559 | 2023-06-09 23:54:26 | MASTER-OAFA | (07h 00m 19.02s , -32d 26m 13.0s) | C | 180 | 17.8 |\n 62024 | 2023-06-10 00:02:11 | MASTER-OAFA | (06h 50m 49.87s , -32d 26m 25.3s) | C | 180 | 17.7 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n",
"published": "2023-06-10T06:34:40.813431Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-10T06:34:40.813449Z",
"modified": "2023-06-10T06:34:40.822298Z",
"targets": []
},
{
"id": 216,
"topic": "gcn.circular",
"uuid": "4a771ba4-8006-4399-a4fd-b959df61113f",
"title": "LIGO/Virgo/KAGRA S230609u: Identification of a GW compact binary merger candidate",
"submitter": "Hop gcn.circular",
"authors": "Kouji Nakamura <dr.kouji.nakamura@gmail.com>",
"data": {
"date": "23/06/09 07:45:34 GMT",
"from": "Kouji Nakamura <dr.kouji.nakamura@gmail.com>",
"title": "GCN CIRCULAR",
"number": "33944",
"subject": "LIGO/Virgo/KAGRA S230609u: Identification of a GW compact binary merger candidate"
},
"message_text": "The LIGO Scientific Collaboration, the Virgo Collaboration, and the\nKAGRA Collaboration report:\n\nWe identified the compact binary merger candidate S230609u during\nreal-time processing of data from LIGO Hanford Observatory (H1) and\nLIGO Livingston Observatory (L1) at 2023-06-09 06:49:58.273 UTC (GPS\ntime: 1370328616.273). The candidate was found by the CWB [1], MBTA\n[2], GstLAL [3], PyCBC Live [4], and SPIIR [5] analysis pipelines.\n\nS230609u is an event of interest because its false alarm rate, as\nestimated by the online analysis, is 1e-08 Hz, or about one in 3\nyears. The event's properties can be found at this URL:\n\nhttps://gracedb.ligo.org/superevents/S230609u\n\nThe classification of the GW signal, in order of descending\nprobability, is BBH (96%), Terrestrial (4%), BNS (<1%), or NSBH (<1%).\n\nAssuming the candidate is astrophysical in origin, the probability\nthat the lighter compact object is consistent with a neutron star mass\n(HasNS) is <1%. [6] Using the masses and spins inferred from the\nsignal, the probability of matter outside the final compact object\n(HasRemnant) is <1%. [6] Both HasNS and HasRemnant consider the\nsupport of several neutron star equations of state. The probability\nthat any one of the binary components lie between 3 to 5 solar mass\n(HasMassgap) is <1%.\n\nTwo sky maps are available at this time and can be retrieved from the\nGraceDB event page:\n * bayestar.multiorder.fits,0, an initial localization generated by\nBAYESTAR [7], distributed via GCN notice about 26 seconds after the\ncandidate event time.\n * bayestar.multiorder.fits,1, an initial localization generated by\nBAYESTAR [7], distributed via GCN notice about 5 minutes after the\ncandidate event time.\n\nThe preferred sky map at this time is bayestar.multiorder.fits,1. For\nthe bayestar.multiorder.fits,1 sky map, the 90% credible region is\n1918 deg2. Marginalized over the whole sky, the a posteriori\nluminosity distance estimate is 2799 +/- 842 Mpc (a posteriori mean\n+/- standard deviation).\n\nFor further information about analysis methodology and the contents of\nthis alert, refer to the LIGO/Virgo/KAGRA Public Alerts User Guide\n<https://emfollow.docs.ligo.org/userguide/>.\n\n [1] Klimenko et al. PRD 93, 042004 (2016)\n [2] Aubin et al. CQG 38, 095004 (2021)\n [3] Tsukada et al. arXiv:2305.06286 (2023) and Ewing et al.\narXiv:2305.05625 (2023)\n [4] Dal Canton et al. ApJ 923, 254 (2021)\n [5] Chu et al. PRD 105, 024023 (2022)\n [6] Chatterjee et al. ApJ 896, 54 (2020)\n [7] Singer & Price PRD 93, 024013 (2016)\n\n",
"published": "2023-06-09T07:45:43.542023Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-09T07:45:43.542052Z",
"modified": "2023-06-09T07:45:43.551175Z",
"targets": []
}
]
},
{
"event_id": "S230611l",
"sequences": [
{
"id": 64,
"sequence_number": 1,
"sequence_type": "PRELIMINARY",
"message": {
"id": 222,
"topic": "igwn.gwalert",
"uuid": "7b07c760-dc7a-4935-bc08-7794f19a41f3",
"title": "S230611l - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230611l/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230611l/view/"
},
"event": {
"far": 2.157098718568062e-06,
"time": "2023-06-11T06:21:13.821Z",
"group": "CBC",
"search": "AllSky",
"area_50": 485.16418278488015,
"area_90": 2244.27120729466,
"duration": null,
"pipeline": "pycbc",
"properties": {
"HasNS": 0.7023604955786689,
"HasMassGap": 0.8448921449422366,
"HasRemnant": 0.004462838607591777
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "700db08503944a73bfed207b64c7e7e3",
"classification": {
"BBH": 0.005287020271306031,
"BNS": 0.0,
"NSBH": 0.012413100657983624,
"Terrestrial": 0.9822998790707104
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-06-11T06:31:38Z",
"superevent_id": "S230611l",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-11T06:31:40.072650Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-11T06:31:40.072671Z",
"modified": "2023-06-11T06:31:40.081863Z"
}
},
{
"id": 65,
"sequence_number": 2,
"sequence_type": "PRELIMINARY",
"message": {
"id": 224,
"topic": "igwn.gwalert",
"uuid": "8842be5e-4249-46ad-8d92-3e9166778d4b",
"title": "S230611l - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230611l/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230611l/view/"
},
"event": {
"far": 2.157098718568062e-06,
"time": "2023-06-11T06:21:13.821Z",
"group": "CBC",
"search": "AllSky",
"area_50": 485.16418278488015,
"area_90": 2244.27120729466,
"duration": null,
"pipeline": "pycbc",
"properties": {
"HasNS": 0.7023604955786689,
"HasMassGap": 0.8448921449422366,
"HasRemnant": 0.004462838607591777
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "700db08503944a73bfed207b64c7e7e3",
"classification": {
"BBH": 0.005287020271306031,
"BNS": 0.0,
"NSBH": 0.012413100657983624,
"Terrestrial": 0.9822998790707104
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-06-11T06:36:14Z",
"superevent_id": "S230611l",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-11T06:36:15.804344Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-11T06:36:15.804366Z",
"modified": "2023-06-11T06:36:15.810140Z"
}
}
],
"references": [
{
"id": 228,
"topic": "gcn.circular",
"uuid": "d057cbe0-b004-4757-8341-2771fe48be1a",
"title": "LIGO/Virgo S230611l: Global MASTER-Net observations report",
"submitter": "Hop gcn.circular",
"authors": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"data": {
"date": "23/06/11 13:26:32 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "33951",
"subject": "LIGO/Virgo S230611l: Global MASTER-Net observations report"
},
"message_text": "V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko,\nG.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin\n(Lomonosov Moscow State University, SAI, Physics Department),\n\nR. Podesta, C.Lopez, F. Podesta, C.Francile\n(Observatorio Astronomico Felix Aguilar OAFA),\n\nR. Rebolo, M. Serra\n(The Instituto de Astrofisica de Canarias),\n\nD. Buckley\n(South African Astronomical Observatory),\n\nO.A. Gres, N.M. Budnev\n(Irkutsk State University, API),\n\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez\n(INAOE, Guillermo Haro Astrophysics Observatory),\n\nA. Tlatov, D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nA. Gabovich, V.Yurkov\n(Blagoveschensk Educational State University)\n\n\nMASTER-Amur robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Russia (Blagoveshchensk State Pedagogical University) started inspect of the LIGO/Virgo S230611l errorbox 23783 sec after notice time and 24454 sec after trigger time at 2023-06-11 13:08:47 UT, with upper limit up to 16.3 mag. Observations started at twilight. The observations began at zenith distance = 67 deg. The sun altitude is -10.5 deg.\n\nThe galactic latitude b = 60 deg., longitude l = 105 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/ligo_1.php?id\u0011988\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 24545 | 2023-06-11 13:08:47 | MASTER-Amur | (04h 17m 31.84s , +62d 13m 55.0s) | C | 180 | 15.7 |\n 24744 | 2023-06-11 13:12:07 | MASTER-Amur | (04h 34m 29.03s , +62d 12m 17.2s) | C | 180 | 16.2 |\n 24944 | 2023-06-11 13:15:27 | MASTER-Amur | (03h 45m 00.64s , +62d 16m 31.6s) | C | 180 | 16.2 |\n 25144 | 2023-06-11 13:18:46 | MASTER-Amur | (04h 02m 11.81s , +62d 14m 41.2s) | C | 180 | 16.3 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n",
"published": "2023-06-11T13:26:40.692894Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-11T13:26:40.692910Z",
"modified": "2023-06-11T13:26:40.700037Z",
"targets": []
}
]
},
{
"event_id": "S230611be",
"sequences": [
{
"id": 68,
"sequence_number": 1,
"sequence_type": "PRELIMINARY",
"message": {
"id": 229,
"topic": "igwn.gwalert",
"uuid": "4bdb3c63-7d91-405c-924f-9b21bb9cd2cd",
"title": "S230611be - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230611be/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230611be/view/"
},
"event": {
"far": 2.768554021731251e-06,
"time": "2023-06-11T20:54:23.801Z",
"group": "CBC",
"search": "AllSky",
"area_50": 722.8416519381175,
"area_90": 3344.585176166501,
"duration": null,
"pipeline": "gstlal",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.004106583072100313,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "8a9f7a46934e1da8e235a1f015eb7682",
"classification": {
"BBH": 0.4304394508098063,
"BNS": 1.9868101038097803e-14,
"NSBH": 2.665938479115782e-08,
"Terrestrial": 0.569560522530789
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-06-11T20:54:50Z",
"superevent_id": "S230611be",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-11T20:54:51.342332Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-11T20:54:51.342353Z",
"modified": "2023-06-11T20:54:51.350174Z"
}
},
{
"id": 69,
"sequence_number": 2,
"sequence_type": "PRELIMINARY",
"message": {
"id": 230,
"topic": "igwn.gwalert",
"uuid": "db228d12-62e4-486a-82e0-7a1f23f84b94",
"title": "S230611be - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230611be/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230611be/view/"
},
"event": {
"far": 2.768554021731251e-06,
"time": "2023-06-11T20:54:23.801Z",
"group": "CBC",
"search": "AllSky",
"area_50": 722.8416519381175,
"area_90": 3344.585176166501,
"duration": null,
"pipeline": "gstlal",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.004106583072100313,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "8a9f7a46934e1da8e235a1f015eb7682",
"classification": {
"BBH": 0.4304394508098063,
"BNS": 1.9868101038097803e-14,
"NSBH": 2.665938479115782e-08,
"Terrestrial": 0.569560522530789
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-06-11T20:59:24Z",
"superevent_id": "S230611be",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-11T20:59:25.804615Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-11T20:59:25.804648Z",
"modified": "2023-06-11T20:59:25.811319Z"
}
}
],
"references": []
},
{
"event_id": "S230611b",
"sequences": [],
"references": [
{
"id": 231,
"topic": "gcn.circular",
"uuid": "9bacfaeb-c913-467a-a03f-fb1bf05e47a7",
"title": "LIGO/Virgo S230611be: Global MASTER-Net observations report",
"submitter": "Hop gcn.circular",
"authors": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"data": {
"date": "23/06/12 03:02:31 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "33952",
"subject": "LIGO/Virgo S230611be: Global MASTER-Net observations report"
},
"message_text": "V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko,\nG.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin\n(Lomonosov Moscow State University, SAI, Physics Department),\n\nR. Podesta, C.Lopez, F. Podesta, C.Francile\n(Observatorio Astronomico Felix Aguilar OAFA),\n\nR. Rebolo, M. Serra\n(The Instituto de Astrofisica de Canarias),\n\nD. Buckley\n(South African Astronomical Observatory),\n\nO.A. Gres, N.M. Budnev\n(Irkutsk State University, API),\n\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez\n(INAOE, Guillermo Haro Astrophysics Observatory),\n\nA. Tlatov, D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nA. Gabovich, V.Yurkov\n(Blagoveschensk Educational State University)\n\n\nMASTER-OAFA robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Argentina (OAFA observatory of San Juan National University) started inspect of the LIGO/Virgo S230611be errorbox 21324 sec after notice time and 21387 sec after trigger time at 2023-06-12 02:50:50 UT, with upper limit up to 18.2 mag. The observations began at zenith distance = 72 deg. The sun altitude is -65.7 deg.\n\nThe galactic latitude b = -38 deg., longitude l = 34 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/ligo_1.php?id\u0011996\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 21477 | 2023-06-12 02:50:50 | MASTER-OAFA | (20h 55m 38.59s , -18d 24m 45.8s) | C | 180 | 18.2 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n",
"published": "2023-06-12T03:02:43.171734Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-12T03:02:43.171753Z",
"modified": "2023-06-12T03:02:43.180795Z",
"targets": []
}
]
},
{
"event_id": "S230612m",
"sequences": [
{
"id": 70,
"sequence_number": 1,
"sequence_type": "PRELIMINARY",
"message": {
"id": 232,
"topic": "igwn.gwalert",
"uuid": "9051ecb2-569b-46a5-88cf-1d456970283e",
"title": "S230612m - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230612m/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230612m/view/"
},
"event": {
"far": 1.96502e-06,
"time": "2023-06-12T08:52:11.460Z",
"group": "Burst",
"search": "BBH",
"area_50": 778.0252091107519,
"area_90": 2447.380269435763,
"duration": 0.005385,
"pipeline": "CWB",
"properties": {},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "69d695194f99e332f1dc78f8689fd395",
"classification": {},
"skymap_version": 0,
"central_frequency": 173.741104
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-06-12T09:00:51Z",
"superevent_id": "S230612m",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-12T09:00:51.751409Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-12T09:00:51.751441Z",
"modified": "2023-06-12T09:00:51.759212Z"
}
},
{
"id": 71,
"sequence_number": 2,
"sequence_type": "PRELIMINARY",
"message": {
"id": 233,
"topic": "igwn.gwalert",
"uuid": "c8a1cb3d-2c09-44f5-978c-9d6efd9a5240",
"title": "S230612m - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230612m/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230612m/view/"
},
"event": {
"far": 1.96502e-06,
"time": "2023-06-12T08:52:11.460Z",
"group": "Burst",
"search": "BBH",
"area_50": 778.0252091107519,
"area_90": 2447.380269435763,
"duration": 0.005385,
"pipeline": "CWB",
"properties": {},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "69d695194f99e332f1dc78f8689fd395",
"classification": {},
"skymap_version": 0,
"central_frequency": 173.741104
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-06-12T09:05:26Z",
"superevent_id": "S230612m",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-12T09:05:26.989351Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-12T09:05:26.989372Z",
"modified": "2023-06-12T09:05:26.995554Z"
}
}
],
"references": []
},
{
"event_id": "S230613at",
"sequences": [
{
"id": 74,
"sequence_number": 1,
"sequence_type": "PRELIMINARY",
"message": {
"id": 240,
"topic": "igwn.gwalert",
"uuid": "fbf52e9c-82dc-4b79-bfb5-7b563f56f8d6",
"title": "S230613at - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230613at/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230613at/view/"
},
"event": {
"far": 5.32948e-06,
"time": "2023-06-13T21:53:38.715Z",
"group": "Burst",
"search": "BBH",
"area_50": 333.1995771488333,
"area_90": 1143.9572384228206,
"duration": 0.017969,
"pipeline": "CWB",
"properties": {},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "f4bf53f2cfd653ff10bff9091b9eed5e",
"classification": {},
"skymap_version": 0,
"central_frequency": 52.21003
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-06-13T21:54:41Z",
"superevent_id": "S230613at",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-13T21:54:42.817259Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-13T21:54:42.817302Z",
"modified": "2023-06-13T21:54:42.825379Z"
}
},
{
"id": 75,
"sequence_number": 2,
"sequence_type": "PRELIMINARY",
"message": {
"id": 241,
"topic": "igwn.gwalert",
"uuid": "48fc574f-306c-4572-a58b-10f9b54ccc95",
"title": "S230613at - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230613at/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230613at/view/"
},
"event": {
"far": 5.32948e-06,
"time": "2023-06-13T21:53:38.715Z",
"group": "Burst",
"search": "BBH",
"area_50": 333.1995771488333,
"area_90": 1143.9572384228206,
"duration": 0.017969,
"pipeline": "CWB",
"properties": {},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "f4bf53f2cfd653ff10bff9091b9eed5e",
"classification": {},
"skymap_version": 0,
"central_frequency": 52.21003
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-06-13T21:59:15Z",
"superevent_id": "S230613at",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-13T21:59:16.432669Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-13T21:59:16.432693Z",
"modified": "2023-06-13T21:59:16.437838Z"
}
}
],
"references": []
},
{
"event_id": "S230613aw",
"sequences": [
{
"id": 76,
"sequence_number": 1,
"sequence_type": "PRELIMINARY",
"message": {
"id": 242,
"topic": "igwn.gwalert",
"uuid": "a17d575a-682c-4d2b-8c32-69963dfefdd8",
"title": "S230613aw - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230613aw/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230613aw/view/"
},
"event": {
"far": 4.82163e-06,
"time": "2023-06-13T22:16:19.831Z",
"group": "Burst",
"search": "AllSky",
"area_50": 336.55675172967796,
"area_90": 1182.5647461025342,
"duration": 0.008671,
"pipeline": "CWB",
"properties": {},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "b9680a9c565161d66aea7b9f2bf540cf",
"classification": {},
"skymap_version": 0,
"central_frequency": 45.103546
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-06-13T22:17:17Z",
"superevent_id": "S230613aw",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-13T22:17:18.714931Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-13T22:17:18.714959Z",
"modified": "2023-06-13T22:17:18.722677Z"
}
},
{
"id": 77,
"sequence_number": 2,
"sequence_type": "PRELIMINARY",
"message": {
"id": 243,
"topic": "igwn.gwalert",
"uuid": "702649ed-866a-4646-99e9-c67bd0c59882",
"title": "S230613aw - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230613aw/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230613aw/view/"
},
"event": {
"far": 4.82163e-06,
"time": "2023-06-13T22:16:19.831Z",
"group": "Burst",
"search": "AllSky",
"area_50": 336.55675172967796,
"area_90": 1182.5647461025342,
"duration": 0.008671,
"pipeline": "CWB",
"properties": {},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "b9680a9c565161d66aea7b9f2bf540cf",
"classification": {},
"skymap_version": 0,
"central_frequency": 45.103546
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-06-13T22:21:51Z",
"superevent_id": "S230613aw",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-13T22:21:51.495900Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-13T22:21:51.495926Z",
"modified": "2023-06-13T22:21:51.501280Z"
}
}
],
"references": []
},
{
"event_id": "S230614o",
"sequences": [
{
"id": 78,
"sequence_number": 1,
"sequence_type": "PRELIMINARY",
"message": {
"id": 247,
"topic": "igwn.gwalert",
"uuid": "1cd540f3-50f2-4c4d-8849-6ab60c32f9b0",
"title": "S230614o - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230614o/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230614o/view/"
},
"event": {
"far": 2.30067e-05,
"time": "2023-06-14T13:36:25.337Z",
"group": "Burst",
"search": "BBH",
"area_50": 3522.5154289512675,
"area_90": 11963.291618839974,
"duration": 0.06911,
"pipeline": "CWB",
"properties": {},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "15af103143f74f65a942091bd9432dd9",
"classification": {},
"skymap_version": 0,
"central_frequency": 21.783993
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-06-14T13:39:10Z",
"superevent_id": "S230614o",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-14T13:39:11.667397Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-14T13:39:11.667424Z",
"modified": "2023-06-14T13:39:11.676277Z"
}
},
{
"id": 79,
"sequence_number": 2,
"sequence_type": "PRELIMINARY",
"message": {
"id": 248,
"topic": "igwn.gwalert",
"uuid": "78183184-765a-414e-9b57-cc57dc62ecd1",
"title": "S230614o - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230614o/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230614o/view/"
},
"event": {
"far": 2.30067e-05,
"time": "2023-06-14T13:36:25.337Z",
"group": "Burst",
"search": "BBH",
"area_50": 3522.5154289512675,
"area_90": 11963.291618839974,
"duration": 0.06911,
"pipeline": "CWB",
"properties": {},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "15af103143f74f65a942091bd9432dd9",
"classification": {},
"skymap_version": 0,
"central_frequency": 21.783993
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-06-14T13:43:44Z",
"superevent_id": "S230614o",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-14T13:43:45.472317Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-14T13:43:45.472344Z",
"modified": "2023-06-14T13:43:45.478029Z"
}
}
],
"references": [
{
"id": 254,
"topic": "gcn.circular",
"uuid": "f84520e1-d769-40ae-b9d3-eee70087c878",
"title": "LIGO/Virgo S230614o: Global MASTER-Net observations report",
"submitter": "Hop gcn.circular",
"authors": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"data": {
"date": "23/06/14 22:52:58 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "33961",
"subject": "LIGO/Virgo S230614o: Global MASTER-Net observations report"
},
"message_text": "V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko,\nG.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin\n(Lomonosov Moscow State University, SAI, Physics Department),\n\nR. Podesta, C.Lopez, F. Podesta, C.Francile\n(Observatorio Astronomico Felix Aguilar OAFA),\n\nR. Rebolo, M. Serra\n(The Instituto de Astrofisica de Canarias),\n\nD. Buckley\n(South African Astronomical Observatory),\n\nO.A. Gres, N.M. Budnev\n(Irkutsk State University, API),\n\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez\n(INAOE, Guillermo Haro Astrophysics Observatory),\n\nA. Tlatov, D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nA. Gabovich, V.Yurkov\n(Blagoveschensk Educational State University)\n\n\nMASTER-OAFA robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Argentina (OAFA observatory of San Juan National University) started inspect of the LIGO/Virgo S230614o errorbox 32493 sec after notice time and 32683 sec after trigger time at 2023-06-14 22:41:08 UT, with upper limit up to 14.6 mag. Observations started at twilight. The observations began at zenith distance = 68 deg. The sun altitude is -13.0 deg.\n\nThe galactic latitude b = -2 deg., longitude l = 278 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/ligo_1.php?id\u0012008\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 32773 | 2023-06-14 22:41:08 | MASTER-OAFA | (06h 49m 48.49s , -13d 27m 33.2s) | C | 180 | 14.6 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n",
"published": "2023-06-14T22:53:06.391397Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-14T22:53:06.391417Z",
"modified": "2023-06-14T22:53:06.397366Z",
"targets": []
}
]
},
{
"event_id": "S230614t",
"sequences": [
{
"id": 80,
"sequence_number": 1,
"sequence_type": "PRELIMINARY",
"message": {
"id": 249,
"topic": "igwn.gwalert",
"uuid": "efb1c7e3-7761-4f99-944f-80a67d6b4823",
"title": "S230614t - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230614t/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230614t/view/"
},
"event": {
"far": 1.769086338754278e-05,
"time": "2023-06-14T14:16:22.793Z",
"group": "CBC",
"search": "AllSky",
"area_50": 2482.6306025346316,
"area_90": 16023.794274371601,
"duration": null,
"pipeline": "spiir",
"properties": {
"HasNS": 0.03668560717362242,
"HasMassGap": 0.2727879936542534,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "6759cd1200e61678e4af8ada9422b01d",
"classification": {
"BBH": 0.03633594772433838,
"BNS": 0.0,
"NSBH": 0.05550745113600972,
"Terrestrial": 0.9081566011396519
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-06-14T14:16:45Z",
"superevent_id": "S230614t",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-14T14:16:47.097523Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-14T14:16:47.097548Z",
"modified": "2023-06-14T14:16:47.102764Z"
}
},
{
"id": 81,
"sequence_number": 2,
"sequence_type": "PRELIMINARY",
"message": {
"id": 250,
"topic": "igwn.gwalert",
"uuid": "cb8117a0-62cb-4258-8ead-07ac73b2a545",
"title": "S230614t - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230614t/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230614t/view/"
},
"event": {
"far": 1.769086338754278e-05,
"time": "2023-06-14T14:16:22.793Z",
"group": "CBC",
"search": "AllSky",
"area_50": 2482.6306025346316,
"area_90": 16023.794274371601,
"duration": null,
"pipeline": "spiir",
"properties": {
"HasNS": 0.03668560717362242,
"HasMassGap": 0.2727879936542534,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "6759cd1200e61678e4af8ada9422b01d",
"classification": {
"BBH": 0.03633594772433838,
"BNS": 0.0,
"NSBH": 0.05550745113600972,
"Terrestrial": 0.9081566011396519
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-06-14T14:21:19Z",
"superevent_id": "S230614t",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-14T14:21:20.660600Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-14T14:21:20.660626Z",
"modified": "2023-06-14T14:21:20.665794Z"
}
}
],
"references": [
{
"id": 255,
"topic": "gcn.circular",
"uuid": "3e76f257-c998-42c3-9a61-593df56adc19",
"title": "LIGO/Virgo S230614t: Global MASTER-Net observations report",
"submitter": "Hop gcn.circular",
"authors": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"data": {
"date": "23/06/14 22:53:05 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "33962",
"subject": "LIGO/Virgo S230614t: Global MASTER-Net observations report"
},
"message_text": "V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko,\nG.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin\n(Lomonosov Moscow State University, SAI, Physics Department),\n\nR. Podesta, C.Lopez, F. Podesta, C.Francile\n(Observatorio Astronomico Felix Aguilar OAFA),\n\nR. Rebolo, M. Serra\n(The Instituto de Astrofisica de Canarias),\n\nD. Buckley\n(South African Astronomical Observatory),\n\nO.A. Gres, N.M. Budnev\n(Irkutsk State University, API),\n\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez\n(INAOE, Guillermo Haro Astrophysics Observatory),\n\nA. Tlatov, D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nA. Gabovich, V.Yurkov\n(Blagoveschensk Educational State University)\n\n\nMASTER-OAFA robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Argentina (OAFA observatory of San Juan National University) started inspect of the LIGO/Virgo S230614t errorbox 30018 sec after notice time and 30070 sec after trigger time at 2023-06-14 22:37:32 UT, with upper limit up to 14.6 mag. Observations started at twilight. The observations began at zenith distance = 69 deg. The sun altitude is -12.3 deg.\n\nThe galactic latitude b = -1 deg., longitude l = 224 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/ligo_1.php?id\u0012012\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 30160 | 2023-06-14 22:37:32 | MASTER-OAFA | (06h 41m 40.85s , -13d 27m 22.8s) | C | 180 | 12.5 |\n 30376 | 2023-06-14 22:41:08 | MASTER-OAFA | (06h 49m 48.49s , -13d 27m 33.2s) | C | 180 | 14.6 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n",
"published": "2023-06-14T22:53:09.420470Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-14T22:53:09.420493Z",
"modified": "2023-06-14T22:53:09.425401Z",
"targets": []
}
]
},
{
"event_id": "S230614ac",
"sequences": [
{
"id": 82,
"sequence_number": 1,
"sequence_type": "PRELIMINARY",
"message": {
"id": 251,
"topic": "igwn.gwalert",
"uuid": "0dc13626-8a1f-4fb9-9936-7446092b0c94",
"title": "S230614ac - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230614ac/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230614ac/view/"
},
"event": {
"far": 2.234978819615208e-05,
"time": "2023-06-14T15:57:51.691Z",
"group": "CBC",
"search": "AllSky",
"area_50": 3012.224892662878,
"area_90": 12492.046615323008,
"duration": null,
"pipeline": "spiir",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.1466759133539319,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "a97eb9e446c8f568773801d3d127465d",
"classification": {
"BBH": 0.060440225877710585,
"BNS": 0.0,
"NSBH": 0.005288810587871609,
"Terrestrial": 0.9342709635344179
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-06-14T15:58:16Z",
"superevent_id": "S230614ac",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-14T15:58:17.062569Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-14T15:58:17.062595Z",
"modified": "2023-06-14T15:58:17.069352Z"
}
},
{
"id": 83,
"sequence_number": 2,
"sequence_type": "PRELIMINARY",
"message": {
"id": 252,
"topic": "igwn.gwalert",
"uuid": "40b95408-893d-41f5-9080-404d96727e19",
"title": "S230614ac - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230614ac/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230614ac/view/"
},
"event": {
"far": 2.234978819615208e-05,
"time": "2023-06-14T15:57:51.691Z",
"group": "CBC",
"search": "AllSky",
"area_50": 3012.224892662878,
"area_90": 12492.046615323008,
"duration": null,
"pipeline": "spiir",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.1466759133539319,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "a97eb9e446c8f568773801d3d127465d",
"classification": {
"BBH": 0.060440225877710585,
"BNS": 0.0,
"NSBH": 0.005288810587871609,
"Terrestrial": 0.9342709635344179
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-06-14T16:02:50Z",
"superevent_id": "S230614ac",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-14T16:02:51.774056Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-14T16:02:51.774081Z",
"modified": "2023-06-14T16:02:51.779187Z"
}
}
],
"references": []
},
{
"event_id": "S230614a",
"sequences": [],
"references": [
{
"id": 256,
"topic": "gcn.circular",
"uuid": "62678815-04f5-474f-8dba-b59b0331fc47",
"title": "LIGO/Virgo S230614ac: Global MASTER-Net observations report",
"submitter": "Hop gcn.circular",
"authors": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"data": {
"date": "23/06/15 00:06:37 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "33963",
"subject": "LIGO/Virgo S230614ac: Global MASTER-Net observations report"
},
"message_text": "V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko,\nG.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin\n(Lomonosov Moscow State University, SAI, Physics Department),\n\nR. Podesta, C.Lopez, F. Podesta, C.Francile\n(Observatorio Astronomico Felix Aguilar OAFA),\n\nR. Rebolo, M. Serra\n(The Instituto de Astrofisica de Canarias),\n\nD. Buckley\n(South African Astronomical Observatory),\n\nO.A. Gres, N.M. Budnev\n(Irkutsk State University, API),\n\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez\n(INAOE, Guillermo Haro Astrophysics Observatory),\n\nA. Tlatov, D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nA. Gabovich, V.Yurkov\n(Blagoveschensk Educational State University)\n\n\nMASTER-OAFA robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Argentina (OAFA observatory of San Juan National University) started inspect of the LIGO/Virgo S230614ac errorbox 28630 sec after notice time and 28683 sec after trigger time at 2023-06-14 23:55:54 UT, with upper limit up to 16.6 mag. The observations began at zenith distance = 68 deg. The sun altitude is -28.4 deg.\n\nThe galactic latitude b = 20 deg., longitude l = 303 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/ligo_1.php?id\u0012018\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 28774 | 2023-06-14 23:55:54 | MASTER-OAFA | (16h 23m 52.39s , +14d 02m 19.7s) | C | 180 | 16.6 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n",
"published": "2023-06-15T00:06:46.758271Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-15T00:06:46.758294Z",
"modified": "2023-06-15T00:06:46.765297Z",
"targets": []
}
]
},
{
"event_id": "S230613a",
"sequences": [],
"references": [
{
"id": 257,
"topic": "gcn.circular",
"uuid": "af5b840c-ad5a-47ba-a9e4-81b2db78c72c",
"title": "LIGO/Virgo S230613at: Global MASTER-Net observations report",
"submitter": "Hop gcn.circular",
"authors": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"data": {
"date": "23/06/15 00:24:44 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "33964",
"subject": "LIGO/Virgo S230613at: Global MASTER-Net observations report"
},
"message_text": "V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko,\nG.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin\n(Lomonosov Moscow State University, SAI, Physics Department),\n\nR. Podesta, C.Lopez, F. Podesta, C.Francile\n(Observatorio Astronomico Felix Aguilar OAFA),\n\nR. Rebolo, M. Serra\n(The Instituto de Astrofisica de Canarias),\n\nD. Buckley\n(South African Astronomical Observatory),\n\nO.A. Gres, N.M. Budnev\n(Irkutsk State University, API),\n\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez\n(INAOE, Guillermo Haro Astrophysics Observatory),\n\nA. Tlatov, D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nA. Gabovich, V.Yurkov\n(Blagoveschensk Educational State University)\n\n\nMASTER-OAFA robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Argentina (OAFA observatory of San Juan National University) started inspect of the LIGO/Virgo S230613at errorbox 1 days 7468 sec after notice time and 1 days 7549 sec after trigger time at 2023-06-14 23:59:27 UT, with upper limit up to 17.0 mag. The observations began at zenith distance = 41 deg. The sun altitude is -29.2 deg.\n\nThe galactic latitude b = 41 deg., longitude l = 278 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/ligo_1.php?id\u0011998\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 94039 | 2023-06-14 23:59:27 | MASTER-OAFA | (10h 43m 20.54s , -04d 55m 21.8s) | C | 180 | 16.4 |\n 94468 | 2023-06-15 00:06:35 | MASTER-OAFA | (10h 35m 15.29s , -04d 55m 16.1s) | C | 180 | 17.0 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n",
"published": "2023-06-15T00:24:53.174849Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-15T00:24:53.174870Z",
"modified": "2023-06-15T00:24:53.181802Z",
"targets": []
}
]
},
{
"event_id": "S230615i",
"sequences": [
{
"id": 84,
"sequence_number": 1,
"sequence_type": "PRELIMINARY",
"message": {
"id": 258,
"topic": "igwn.gwalert",
"uuid": "2df52de0-7558-43f0-b310-4a4d5c10a839",
"title": "S230615i - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230615i/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230615i/view/"
},
"event": {
"far": 1.306295871472685e-05,
"time": "2023-06-15T07:26:52.510Z",
"group": "CBC",
"search": "AllSky",
"area_50": 1657.1853024694492,
"area_90": 6345.899251441634,
"duration": null,
"pipeline": "spiir",
"properties": {
"HasNS": 1.0,
"HasMassGap": 0.06477411477411478,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "ca3836f47e6c9629275478ce93e5c80d",
"classification": {
"BBH": 4.522145410214619e-05,
"BNS": 0.020452799698621103,
"NSBH": 0.2011889559134725,
"Terrestrial": 0.7783130229338042
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-06-15T07:27:18Z",
"superevent_id": "S230615i",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-15T07:27:19.715738Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-15T07:27:19.715785Z",
"modified": "2023-06-15T07:27:19.723943Z"
}
},
{
"id": 85,
"sequence_number": 2,
"sequence_type": "PRELIMINARY",
"message": {
"id": 259,
"topic": "igwn.gwalert",
"uuid": "f10aedda-ffe2-4536-b169-80bcc34d071e",
"title": "S230615i - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230615i/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230615i/view/"
},
"event": {
"far": 1.306295871472685e-05,
"time": "2023-06-15T07:26:52.510Z",
"group": "CBC",
"search": "AllSky",
"area_50": 1657.1853024694492,
"area_90": 6345.899251441634,
"duration": null,
"pipeline": "spiir",
"properties": {
"HasNS": 1.0,
"HasMassGap": 0.06477411477411478,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "ca3836f47e6c9629275478ce93e5c80d",
"classification": {
"BBH": 4.522145410214619e-05,
"BNS": 0.020452799698621103,
"NSBH": 0.2011889559134725,
"Terrestrial": 0.7783130229338042
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-06-15T07:31:55Z",
"superevent_id": "S230615i",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-15T07:31:56.301244Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-15T07:31:56.301270Z",
"modified": "2023-06-15T07:31:56.306578Z"
}
}
],
"references": [
{
"id": 262,
"topic": "gcn.circular",
"uuid": "c5291978-06f2-4467-ac93-53ae7ac427d7",
"title": "LIGO/Virgo S230615i: Global MASTER-Net observations report",
"submitter": "Hop gcn.circular",
"authors": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"data": {
"date": "23/06/15 07:44:53 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "33965",
"subject": "LIGO/Virgo S230615i: Global MASTER-Net observations report"
},
"message_text": "V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko,\nG.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin\n(Lomonosov Moscow State University, SAI, Physics Department),\n\nR. Podesta, C.Lopez, F. Podesta, C.Francile\n(Observatorio Astronomico Felix Aguilar OAFA),\n\nR. Rebolo, M. Serra\n(The Instituto de Astrofisica de Canarias),\n\nD. Buckley\n(South African Astronomical Observatory),\n\nO.A. Gres, N.M. Budnev\n(Irkutsk State University, API),\n\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez\n(INAOE, Guillermo Haro Astrophysics Observatory),\n\nA. Tlatov, D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nA. Gabovich, V.Yurkov\n(Blagoveschensk Educational State University)\n\n\nMASTER-OAFA robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Argentina (OAFA observatory of San Juan National University) started inspect of the LIGO/Virgo S230615i errorbox 204 sec after notice time and 260 sec after trigger time at 2023-06-15 07:31:12 UT, with upper limit up to 16.3 mag. The observations began at zenith distance = 78 deg. The sun altitude is -50.3 deg.\n\nThe galactic latitude b = 24 deg., longitude l = 67 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/ligo_1.php?id\u0012020\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 285 | 2023-06-15 07:31:12 | MASTER-OAFA | (18h 11m 09.70s , +40d 46m 37.6s) | C | 50 | 15.6 |\n 377 | 2023-06-15 07:32:33 | MASTER-OAFA | (18h 11m 09.55s , +40d 44m 43.5s) | C | 70 | 16.0 |\n 485 | 2023-06-15 07:34:16 | MASTER-OAFA | (18h 11m 11.92s , +40d 46m 20.9s) | C | 80 | 16.3 |\n 611 | 2023-06-15 07:36:08 | MASTER-OAFA | (18h 11m 05.25s , +40d 45m 43.9s) | C | 110 | 16.2 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n",
"published": "2023-06-15T07:45:02.738839Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-15T07:45:02.738860Z",
"modified": "2023-06-15T07:45:02.743824Z",
"targets": []
}
]
},
{
"event_id": "S230615k",
"sequences": [
{
"id": 86,
"sequence_number": 1,
"sequence_type": "PRELIMINARY",
"message": {
"id": 260,
"topic": "igwn.gwalert",
"uuid": "29ab75c3-287b-4c8c-9d7e-47957e88ff17",
"title": "S230615k - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230615k/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230615k/view/"
},
"event": {
"far": 6.593862963200081e-06,
"time": "2023-06-15T07:37:11.070Z",
"group": "CBC",
"search": "AllSky",
"area_50": 119.80916785389408,
"area_90": 603.4521309068292,
"duration": null,
"pipeline": "spiir",
"properties": {
"HasNS": 0.5169510748368371,
"HasMassGap": 0.9126794709301841,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "20ed8ec7e514cf6481eb5faceba75438",
"classification": {
"BBH": 0.029058197554836712,
"BNS": 0.0,
"NSBH": 0.064138007774089,
"Terrestrial": 0.9068037946710743
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-06-15T07:37:35Z",
"superevent_id": "S230615k",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-15T07:37:36.858194Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-15T07:37:36.858233Z",
"modified": "2023-06-15T07:37:36.863873Z"
}
},
{
"id": 87,
"sequence_number": 2,
"sequence_type": "PRELIMINARY",
"message": {
"id": 261,
"topic": "igwn.gwalert",
"uuid": "461a3ed1-6af7-4c63-a4f3-084922bce375",
"title": "S230615k - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230615k/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230615k/view/"
},
"event": {
"far": 6.593862963200081e-06,
"time": "2023-06-15T07:37:11.070Z",
"group": "CBC",
"search": "AllSky",
"area_50": 119.80916785389408,
"area_90": 603.4521309068292,
"duration": null,
"pipeline": "spiir",
"properties": {
"HasNS": 0.5169510748368371,
"HasMassGap": 0.9126794709301841,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "20ed8ec7e514cf6481eb5faceba75438",
"classification": {
"BBH": 0.029058197554836712,
"BNS": 0.0,
"NSBH": 0.064138007774089,
"Terrestrial": 0.9068037946710743
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-06-15T07:42:10Z",
"superevent_id": "S230615k",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-15T07:42:11.360434Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-15T07:42:11.360477Z",
"modified": "2023-06-15T07:42:11.365939Z"
}
}
],
"references": [
{
"id": 289,
"topic": "gcn.circular",
"uuid": "53c6405e-0dce-45e9-9a21-0788ce8e1118",
"title": "LIGO/Virgo S230615k: Global MASTER-Net observations report",
"submitter": "Hop gcn.circular",
"authors": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"data": {
"date": "23/06/15 22:47:02 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "33970",
"subject": "LIGO/Virgo S230615k: Global MASTER-Net observations report"
},
"message_text": "V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko,\nG.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin\n(Lomonosov Moscow State University, SAI, Physics Department),\n\nR. Podesta, C.Lopez, F. Podesta, C.Francile\n(Observatorio Astronomico Felix Aguilar OAFA),\n\nR. Rebolo, M. Serra\n(The Instituto de Astrofisica de Canarias),\n\nD. Buckley\n(South African Astronomical Observatory),\n\nO.A. Gres, N.M. Budnev\n(Irkutsk State University, API),\n\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez\n(INAOE, Guillermo Haro Astrophysics Observatory),\n\nA. Tlatov, D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nA. Gabovich, V.Yurkov\n(Blagoveschensk Educational State University)\n\n\nMASTER-OAFA robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Argentina (OAFA observatory of San Juan National University) started inspect of the LIGO/Virgo S230615k errorbox 53729 sec after notice time and 53782 sec after trigger time at 2023-06-15 22:33:33 UT, with upper limit up to 17.7 mag. Observations started at twilight. The observations began at zenith distance = 48 deg. The sun altitude is -11.4 deg.\n\nThe galactic latitude b = 71 deg., longitude l = 192 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/ligo_1.php?id\u0012026\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 53873 | 2023-06-15 22:33:33 | MASTER-OAFA | (13h 03m 20.61s , +11d 23m 55.0s) | C | 180 | 17.7 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n",
"published": "2023-06-15T22:47:11.555947Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-15T22:47:11.555968Z",
"modified": "2023-06-15T22:47:11.562257Z",
"targets": []
}
]
},
{
"event_id": "S230615t",
"sequences": [
{
"id": 88,
"sequence_number": 1,
"sequence_type": "PRELIMINARY",
"message": {
"id": 264,
"topic": "igwn.gwalert",
"uuid": "b0f184c1-0da4-4d5b-b65f-3ef2ed8112fb",
"title": "S230615t - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230615t/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230615t/view/"
},
"event": {
"far": 8.506926596092112e-06,
"time": "2023-06-15T10:21:29.176Z",
"group": "CBC",
"search": "AllSky",
"area_50": 1469.6031727647537,
"area_90": 5641.731883109464,
"duration": null,
"pipeline": "gstlal",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.04264138160689884,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "010028df4f5801a856d13f22b44a4417",
"classification": {
"BBH": 0.19856046960863308,
"BNS": 9.471967327206443e-14,
"NSBH": 6.476169645600013e-12,
"Terrestrial": 0.801439530384796
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-06-15T10:21:56Z",
"superevent_id": "S230615t",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-15T10:21:58.155015Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-15T10:21:58.155038Z",
"modified": "2023-06-15T10:21:58.161865Z"
}
},
{
"id": 89,
"sequence_number": 2,
"sequence_type": "PRELIMINARY",
"message": {
"id": 265,
"topic": "igwn.gwalert",
"uuid": "987ac4f9-1321-435e-b9d8-06dcbbfb3a03",
"title": "S230615t - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230615t/files/bayestar.multiorder.fits,1",
"gracedb": "https://gracedb.ligo.org/superevents/S230615t/view/"
},
"event": {
"far": 9.236524224923552e-06,
"time": "2023-06-15T10:21:29.176Z",
"group": "CBC",
"search": "AllSky",
"area_50": 1497.0900396454192,
"area_90": 5749.161469696493,
"duration": null,
"pipeline": "gstlal",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.04264138160689884,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "fe213f844a61d1b07a41aa7e58d9c98d",
"classification": {
"BBH": 0.1817007657636039,
"BNS": 8.80612776857151e-14,
"NSBH": 6.2126157288599525e-12,
"Terrestrial": 0.8182992342300954
},
"skymap_version": 1,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-06-15T10:26:32Z",
"superevent_id": "S230615t",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-15T10:26:33.762414Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-15T10:26:33.762453Z",
"modified": "2023-06-15T10:26:33.767817Z"
}
}
],
"references": [
{
"id": 273,
"topic": "gcn.circular",
"uuid": "9c2ed987-729a-4dd8-9c96-98bf65000076",
"title": "LIGO/Virgo S230615t: Global MASTER-Net observations report",
"submitter": "Hop gcn.circular",
"authors": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"data": {
"date": "23/06/15 15:58:41 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "33968",
"subject": "LIGO/Virgo S230615t: Global MASTER-Net observations report"
},
"message_text": "V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko,\nG.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin\n(Lomonosov Moscow State University, SAI, Physics Department),\n\nR. Podesta, C.Lopez, F. Podesta, C.Francile\n(Observatorio Astronomico Felix Aguilar OAFA),\n\nR. Rebolo, M. Serra\n(The Instituto de Astrofisica de Canarias),\n\nD. Buckley\n(South African Astronomical Observatory),\n\nO.A. Gres, N.M. Budnev\n(Irkutsk State University, API),\n\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez\n(INAOE, Guillermo Haro Astrophysics Observatory),\n\nA. Tlatov, D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nA. Gabovich, V.Yurkov\n(Blagoveschensk Educational State University)\n\n\nMASTER-Tunka robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Russia (Applied Physics Institute, Irkutsk State University) started inspect of the LIGO/Virgo S230615t errorbox 19512 sec after notice time and 19556 sec after trigger time at 2023-06-15 15:47:25 UT, with upper limit up to 15.3 mag. Observations started at twilight. The observations began at zenith distance = 23 deg. The sun altitude is -13.6 deg.\n\nThe galactic latitude b = 31 deg., longitude l = 264 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/ligo_1.php?id\u0012030\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 19647 | 2023-06-15 15:47:25 | MASTER-Tunka | (15h 18m 33.21s , +72d 53m 34.3s) | C | 180 | 15.3 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n",
"published": "2023-06-15T15:58:55.302172Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-15T15:58:55.302194Z",
"modified": "2023-06-15T15:58:55.308801Z",
"targets": []
}
]
},
{
"event_id": "S230615af",
"sequences": [
{
"id": 90,
"sequence_number": 1,
"sequence_type": "PRELIMINARY",
"message": {
"id": 266,
"topic": "igwn.gwalert",
"uuid": "6c09287b-9632-4d83-93f1-eba7dbd813e1",
"title": "S230615af - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230615af/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230615af/view/"
},
"event": {
"far": 5.371207484692898e-06,
"time": "2023-06-15T12:54:10.403Z",
"group": "CBC",
"search": "AllSky",
"area_50": 343.84811527245,
"area_90": 1371.8254630976523,
"duration": null,
"pipeline": "pycbc",
"properties": {
"HasNS": 1.0,
"HasMassGap": 0.5646669535507133,
"HasRemnant": 1.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "480eeb20e797c5d3db072b2c5c52bf03",
"classification": {
"BBH": 0.0,
"BNS": 0.0066922197049985276,
"NSBH": 0.0,
"Terrestrial": 0.9933077802950014
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-06-15T12:54:45Z",
"superevent_id": "S230615af",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-15T12:54:46.625175Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-15T12:54:46.625198Z",
"modified": "2023-06-15T12:54:46.632434Z"
}
},
{
"id": 91,
"sequence_number": 2,
"sequence_type": "PRELIMINARY",
"message": {
"id": 267,
"topic": "igwn.gwalert",
"uuid": "a151c4de-c9d5-452c-a451-0ae01a55e7f9",
"title": "S230615af - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230615af/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230615af/view/"
},
"event": {
"far": 5.371207484692898e-06,
"time": "2023-06-15T12:54:10.403Z",
"group": "CBC",
"search": "AllSky",
"area_50": 343.84811527245,
"area_90": 1371.8254630976523,
"duration": null,
"pipeline": "pycbc",
"properties": {
"HasNS": 1.0,
"HasMassGap": 0.5646669535507133,
"HasRemnant": 1.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "480eeb20e797c5d3db072b2c5c52bf03",
"classification": {
"BBH": 0.0,
"BNS": 0.0066922197049985276,
"NSBH": 0.0,
"Terrestrial": 0.9933077802950014
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-06-15T12:59:17Z",
"superevent_id": "S230615af",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-15T12:59:18.222090Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-15T12:59:18.222130Z",
"modified": "2023-06-15T12:59:18.227670Z"
}
}
],
"references": []
},
{
"event_id": "S230615ak",
"sequences": [
{
"id": 92,
"sequence_number": 1,
"sequence_type": "PRELIMINARY",
"message": {
"id": 268,
"topic": "igwn.gwalert",
"uuid": "bb244ae0-45ed-41d6-9eb6-37854e7501b1",
"title": "S230615ak - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230615ak/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230615ak/view/"
},
"event": {
"far": 4.850146193643785e-06,
"time": "2023-06-15T13:25:23.737Z",
"group": "CBC",
"search": "AllSky",
"area_50": 366.08939687054595,
"area_90": 1145.8456491245456,
"duration": null,
"pipeline": "pycbc",
"properties": {
"HasNS": 0.016255871799180432,
"HasMassGap": 0.16491996380957147,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "f801e7f3ec3ceee6aff90d129a04240c",
"classification": {
"BBH": 0.04798087261846553,
"BNS": 0.0,
"NSBH": 0.027120800370849456,
"Terrestrial": 0.924898327010685
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-06-15T13:25:54Z",
"superevent_id": "S230615ak",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-15T13:25:56.381921Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-15T13:25:56.381946Z",
"modified": "2023-06-15T13:25:56.387186Z"
}
},
{
"id": 93,
"sequence_number": 2,
"sequence_type": "PRELIMINARY",
"message": {
"id": 269,
"topic": "igwn.gwalert",
"uuid": "2fa10c16-5d51-4c2c-b2ef-4232cf1dc568",
"title": "S230615ak - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230615ak/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230615ak/view/"
},
"event": {
"far": 4.850146193643785e-06,
"time": "2023-06-15T13:25:23.737Z",
"group": "CBC",
"search": "AllSky",
"area_50": 366.08939687054595,
"area_90": 1145.8456491245456,
"duration": null,
"pipeline": "pycbc",
"properties": {
"HasNS": 0.016255871799180432,
"HasMassGap": 0.16491996380957147,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "f801e7f3ec3ceee6aff90d129a04240c",
"classification": {
"BBH": 0.04798087261846553,
"BNS": 0.0,
"NSBH": 0.027120800370849456,
"Terrestrial": 0.924898327010685
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-06-15T13:30:29Z",
"superevent_id": "S230615ak",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-15T13:30:29.952477Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-15T13:30:29.952503Z",
"modified": "2023-06-15T13:30:29.957854Z"
}
}
],
"references": []
},
{
"event_id": "S230615an",
"sequences": [
{
"id": 94,
"sequence_number": 1,
"sequence_type": "PRELIMINARY",
"message": {
"id": 270,
"topic": "igwn.gwalert",
"uuid": "ab2d57c4-e05b-4ec9-ab4a-921289c232d1",
"title": "S230615an - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230615an/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230615an/view/"
},
"event": {
"far": 1.772685355153349e-05,
"time": "2023-06-15T13:35:22.236Z",
"group": "CBC",
"search": "AllSky",
"area_50": 467.5914720882714,
"area_90": 1867.4283605948465,
"duration": null,
"pipeline": "pycbc",
"properties": {
"HasNS": 1.0,
"HasMassGap": 0.7912308150004013,
"HasRemnant": 0.5065700937261416
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "5b19c42b7cb86ee6eaf388b6619b3b2d",
"classification": {
"BBH": 0.0,
"BNS": 0.0003402609742035236,
"NSBH": 0.0008740773059472018,
"Terrestrial": 0.9987856617198493
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-06-15T13:35:55Z",
"superevent_id": "S230615an",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-15T13:35:56.751850Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-15T13:35:56.751875Z",
"modified": "2023-06-15T13:35:56.756997Z"
}
},
{
"id": 95,
"sequence_number": 2,
"sequence_type": "PRELIMINARY",
"message": {
"id": 271,
"topic": "igwn.gwalert",
"uuid": "bd3623f9-fedf-4d4d-85b9-790d318ad589",
"title": "S230615an - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230615an/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230615an/view/"
},
"event": {
"far": 1.772685355153349e-05,
"time": "2023-06-15T13:35:22.236Z",
"group": "CBC",
"search": "AllSky",
"area_50": 467.5914720882714,
"area_90": 1867.4283605948465,
"duration": null,
"pipeline": "pycbc",
"properties": {
"HasNS": 1.0,
"HasMassGap": 0.7912308150004013,
"HasRemnant": 0.5065700937261416
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "5b19c42b7cb86ee6eaf388b6619b3b2d",
"classification": {
"BBH": 0.0,
"BNS": 0.0003402609742035236,
"NSBH": 0.0008740773059472018,
"Terrestrial": 0.9987856617198493
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-06-15T13:40:32Z",
"superevent_id": "S230615an",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-15T13:40:33.465702Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-15T13:40:33.465726Z",
"modified": "2023-06-15T13:40:33.470906Z"
}
}
],
"references": []
},
{
"event_id": "S230615av",
"sequences": [
{
"id": 96,
"sequence_number": 1,
"sequence_type": "PRELIMINARY",
"message": {
"id": 274,
"topic": "igwn.gwalert",
"uuid": "6f07c557-c432-4d02-a6aa-24ce04bc0346",
"title": "S230615av - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230615av/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230615av/view/"
},
"event": {
"far": 1.447109934644966e-07,
"time": "2023-06-15T16:08:26.002Z",
"group": "CBC",
"search": "AllSky",
"area_50": 1486.8086924915824,
"area_90": 7016.494873965356,
"duration": null,
"pipeline": "gstlal",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.026260429225946468,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "f2288f71fc52dfccefe9c8288b8e676c",
"classification": {
"BBH": 0.9119131515882601,
"BNS": 1.0152313890691222e-14,
"NSBH": 7.837786672841223e-13,
"Terrestrial": 0.08808684841094594
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-06-15T16:08:47Z",
"superevent_id": "S230615av",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-15T16:08:48.471911Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-15T16:08:48.471936Z",
"modified": "2023-06-15T16:08:48.476961Z"
}
},
{
"id": 97,
"sequence_number": 2,
"sequence_type": "PRELIMINARY",
"message": {
"id": 275,
"topic": "igwn.gwalert",
"uuid": "b2768481-971d-4505-b83e-97eb1fbfdc28",
"title": "S230615av - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230615av/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230615av/view/"
},
"event": {
"far": 1.447109934644966e-07,
"time": "2023-06-15T16:08:26.002Z",
"group": "CBC",
"search": "AllSky",
"area_50": 1486.8086924915824,
"area_90": 7016.494873965356,
"duration": null,
"pipeline": "gstlal",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.026260429225946468,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "f2288f71fc52dfccefe9c8288b8e676c",
"classification": {
"BBH": 0.9119131515882601,
"BNS": 1.0152313890691222e-14,
"NSBH": 7.837786672841223e-13,
"Terrestrial": 0.08808684841094594
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-06-15T16:13:21Z",
"superevent_id": "S230615av",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-15T16:13:22.941051Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-15T16:13:22.941076Z",
"modified": "2023-06-15T16:13:22.946328Z"
}
}
],
"references": []
},
{
"event_id": "S230615ax",
"sequences": [
{
"id": 98,
"sequence_number": 1,
"sequence_type": "PRELIMINARY",
"message": {
"id": 277,
"topic": "igwn.gwalert",
"uuid": "6684a9ef-07df-4656-9226-5aa1f10e72e6",
"title": "S230615ax - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230615ax/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230615ax/view/"
},
"event": {
"far": 5.0898e-07,
"time": "2023-06-15T16:30:04.266Z",
"group": "Burst",
"search": "AllSky",
"area_50": 436.6425189211096,
"area_90": 1569.2692931335798,
"duration": 0.005846,
"pipeline": "CWB",
"properties": {},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "3b393d67157c7ee1abc7735482aff104",
"classification": {},
"skymap_version": 0,
"central_frequency": 249.436127
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-06-15T16:32:11Z",
"superevent_id": "S230615ax",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-15T16:32:12.374593Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-15T16:32:12.374616Z",
"modified": "2023-06-15T16:32:12.379752Z"
}
},
{
"id": 99,
"sequence_number": 2,
"sequence_type": "PRELIMINARY",
"message": {
"id": 279,
"topic": "igwn.gwalert",
"uuid": "c6ab4692-d354-4dfd-85e1-5f68703ec308",
"title": "S230615ax - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230615ax/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230615ax/view/"
},
"event": {
"far": 5.0898e-07,
"time": "2023-06-15T16:30:04.266Z",
"group": "Burst",
"search": "AllSky",
"area_50": 436.6425189211096,
"area_90": 1569.2692931335798,
"duration": 0.005846,
"pipeline": "CWB",
"properties": {},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "3b393d67157c7ee1abc7735482aff104",
"classification": {},
"skymap_version": 0,
"central_frequency": 249.436127
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-06-15T16:36:45Z",
"superevent_id": "S230615ax",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-15T16:36:45.931407Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-15T16:36:45.931432Z",
"modified": "2023-06-15T16:36:45.936556Z"
}
}
],
"references": []
},
{
"event_id": "S230615az",
"sequences": [
{
"id": 100,
"sequence_number": 1,
"sequence_type": "PRELIMINARY",
"message": {
"id": 280,
"topic": "igwn.gwalert",
"uuid": "4b221b52-f4ad-4ed7-ab72-2ef67d63c137",
"title": "S230615az - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230615az/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230615az/view/"
},
"event": {
"far": 1.491799679342876e-07,
"time": "2023-06-15T17:50:08.699Z",
"group": "CBC",
"search": "AllSky",
"area_50": 1205.8551447571442,
"area_90": 4415.52386745595,
"duration": null,
"pipeline": "spiir",
"properties": {
"HasNS": 1.0,
"HasMassGap": 0.00690551948051948,
"HasRemnant": 1.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "3620521824df4f97a501871355edbea8",
"classification": {
"BBH": 0.0,
"BNS": 0.8468281302522763,
"NSBH": 0.0,
"Terrestrial": 0.15317186974772368
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-06-15T17:50:33Z",
"superevent_id": "S230615az",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-15T17:50:35.869593Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-15T17:50:35.869617Z",
"modified": "2023-06-15T17:50:35.876738Z"
}
},
{
"id": 101,
"sequence_number": 2,
"sequence_type": "PRELIMINARY",
"message": {
"id": 281,
"topic": "igwn.gwalert",
"uuid": "11dea7f3-6c41-42eb-9ec7-57123fc204f4",
"title": "S230615az - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230615az/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230615az/view/"
},
"event": {
"far": 1.491799679342876e-07,
"time": "2023-06-15T17:50:08.699Z",
"group": "CBC",
"search": "AllSky",
"area_50": 1205.8551447571442,
"area_90": 4415.52386745595,
"duration": null,
"pipeline": "spiir",
"properties": {
"HasNS": 1.0,
"HasMassGap": 0.00690551948051948,
"HasRemnant": 1.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "3620521824df4f97a501871355edbea8",
"classification": {
"BBH": 0.0,
"BNS": 0.8468281302522763,
"NSBH": 0.0,
"Terrestrial": 0.15317186974772368
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-06-15T17:55:18Z",
"superevent_id": "S230615az",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-15T17:55:19.464921Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-15T17:55:19.464946Z",
"modified": "2023-06-15T17:55:19.470107Z"
}
}
],
"references": []
},
{
"event_id": "S230615be",
"sequences": [
{
"id": 102,
"sequence_number": 1,
"sequence_type": "PRELIMINARY",
"message": {
"id": 282,
"topic": "igwn.gwalert",
"uuid": "aa5fbac1-fccf-4e22-8164-ba2a7fedaeb6",
"title": "S230615be - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230615be/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230615be/view/"
},
"event": {
"far": 1.17012e-05,
"time": "2023-06-15T18:00:26.042Z",
"group": "Burst",
"search": "AllSky",
"area_50": 312.2172360185541,
"area_90": 1112.064079904796,
"duration": 0.004358,
"pipeline": "CWB",
"properties": {},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "9f884f92e25a3f39e3320bbb4e2c6b2c",
"classification": {},
"skymap_version": 0,
"central_frequency": 180.522827
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-06-15T18:01:30Z",
"superevent_id": "S230615be",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-15T18:01:31.142238Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-15T18:01:31.142262Z",
"modified": "2023-06-15T18:01:31.147226Z"
}
},
{
"id": 103,
"sequence_number": 2,
"sequence_type": "PRELIMINARY",
"message": {
"id": 283,
"topic": "igwn.gwalert",
"uuid": "44e8b8ec-1b82-4694-a17c-360cf3b038c5",
"title": "S230615be - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230615be/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230615be/view/"
},
"event": {
"far": 1.17012e-05,
"time": "2023-06-15T18:00:26.042Z",
"group": "Burst",
"search": "AllSky",
"area_50": 312.2172360185541,
"area_90": 1112.064079904796,
"duration": 0.004358,
"pipeline": "CWB",
"properties": {},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "9f884f92e25a3f39e3320bbb4e2c6b2c",
"classification": {},
"skymap_version": 0,
"central_frequency": 180.522827
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-06-15T18:06:04Z",
"superevent_id": "S230615be",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-15T18:06:05.729574Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-15T18:06:05.729599Z",
"modified": "2023-06-15T18:06:05.734920Z"
}
}
],
"references": []
},
{
"event_id": "S230615a",
"sequences": [],
"references": [
{
"id": 508,
"topic": "gcn.circular",
"uuid": "a6b3e40e-a739-4b50-9407-6b32225cf324",
"title": "LIGO/Virgo/KAGRA S230615az: LBT spectroscopic classification of GOTO23hn",
"submitter": "Hop gcn.circular",
"authors": "Andrea Rossi at INAF <andrea.rossi@inaf.it>",
"data": {
"date": "23/06/22 16:34:20 GMT",
"from": "Andrea Rossi at INAF <andrea.rossi@inaf.it>",
"title": "GCN CIRCULAR",
"number": "34066",
"subject": "LIGO/Virgo/KAGRA S230615az: LBT spectroscopic classification of GOTO23hn"
},
"message_text": "E. Maiorano, A. Rossi, E. Palazzi, F. Cusano (INAF-OAS Bologna), L. Izzo (INAF-OAC, DARK/NBI), S.Benetti (INAF OAPd), A. Melandri (INAF-OAR), P. DâAvanzo (INAF-OAB), and V. DâElia (SSDC and INAF-OAR) report on behalf of GRAvitational Wave Inaf TeAm (GRAWITA):\n\nWe report the classification of spectroscopic observations of GOTO23hn (Gompertz et al., GCN #33979; Strausbaugh et al., GCN 34020), one of the GOTO candidate counterparts of the LIGO/Virgo event S230615az. The LBT/MODS spectrum has been obtained at the mid-time 04:33 UT on 2023-06-21, 5.7 days after the GW trigger, for a total on-source time of 1200 s, covering the wavelength range 3200-10000 AA as described in Rossi et al. (GCN #34061), where we measure a spectroscopic redshift of z=0.0929 for the host galaxy. \n\nThe spectra display a strong SII line, indicative of a SN Ia. Using the SNID software (Blondin & Tonry 2007), the best match is found with SN 1993ac at about 7 days after maximum. Multiband photometry was also collected and a preliminary analysis gives r=19.015 +-0.014 and g=18.856+- 0.008, AB mag.\n\nWe acknowledge the excellent support from the LBTO and LBT-INAF staff, particularly D. Thompson, D. G. Huerta , and D. Paris, in obtaining these observations.\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg3NDUxNjY1LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.Gq0KjuSnraipef7pUoOiz-rzI0tx1Ure3YkKVPA8VvI\n\n",
"published": "2023-06-22T16:34:31.300458Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-22T16:34:31.300479Z",
"modified": "2023-06-22T16:34:31.308045Z",
"targets": []
},
{
"id": 494,
"topic": "gcn.circular",
"uuid": "8549c7d3-924c-44c2-946b-ea04187a6dfb",
"title": "LIGO/Virgo/KAGRA S230615az: LBT spectroscopic redshift of the host galaxy of GOTO23hn",
"submitter": "Hop gcn.circular",
"authors": "Andrea Rossi at INAF <andrea.rossi@inaf.it>",
"data": {
"date": "23/06/22 14:28:29 GMT",
"from": "Andrea Rossi at INAF <andrea.rossi@inaf.it>",
"title": "GCN CIRCULAR",
"number": "34061",
"subject": "LIGO/Virgo/KAGRA S230615az: LBT spectroscopic redshift of the host galaxy of GOTO23hn"
},
"message_text": "A. Rossi, E. Maiorano, E. Palazzi, F. Cusano (INAF-OAS Bologna), A. Melandri (INAF-OAR), P. DâAvanzo (INAF-OAB), V. DâElia (SSDC and INAF-OAR), and L. Izzo (INAF-OAC, DARK/NBI) on behalf of the on behalf of GRAvitational Wave Inaf TeAm (GRAWITA) collaboration report:\n\nWe report the results of spectroscopic observations of GOTO23hn (Gompertz et al., GCN #33979; Strausbaugh et al., GCN 34020), one of the GOTO candidate counterparts of the LIGO/Virgo event S230615az. \n\nThe spectra were obtained with the Multi-Object Double Spectrographs (MODS) instrument mounted on the 2x8.4-m LBT telescope (Mt. Graham, AZ, USA) at the mid-time 04:33 UT on 2023-06-21, 5.7 days after the GW trigger, for a total on-source time of 1200 s, covering the wavelength range 3200-10000 AA.\n\nThe MODS slit of 1.2 arcsec and its inclination was adjusted to a parallactic angle of 4.8 degrees to cover the positions of the transient and its host, which is very elongated as visible also in Pan-STARRS and SDSS archival images. Preliminary analysis of the red part (>5800 AA) of the host spectrum shows several well detected emission lines which we interpret as H-alpha, [NII] 6548,6583AA, and [SII] 6716,6731AA, at a common redshift of z=0.0929, suggesting that this is a star-forming galaxy.\n\nAnalysis of the spectrum of the GOTO candidate is ongoing.\n\nWe acknowledge the excellent support from the LBTO and LBT-INAF staff, particularly D. Thompson, D. G. Huerta , and D. Paris, in obtaining these observations.\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg3NDQ0MTE0LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.lJUJil_YlD5DZ7JN8MnnVN7l9mOUZimejoZusZarRKc\n\n",
"published": "2023-06-22T14:28:40.694091Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-22T14:28:40.694111Z",
"modified": "2023-06-22T14:28:40.701179Z",
"targets": []
},
{
"id": 454,
"topic": "gcn.circular",
"uuid": "5fcf3ec0-e7c3-4639-be7f-610f579ffdb0",
"title": "LIGO/Virgo/KAGRA S230615az: Wendelstein observations of DESI galaxies and GIT candidates",
"submitter": "Hop gcn.circular",
"authors": "Antonella Palmese at Carnegie Mellon University <apalmese@andrew.cmu.edu>",
"data": {
"date": "23/06/20 14:55:35 GMT",
"from": "Antonella Palmese at Carnegie Mellon University <apalmese@andrew.cmu.edu>",
"title": "GCN CIRCULAR",
"number": "34039",
"subject": "LIGO/Virgo/KAGRA S230615az: Wendelstein observations of DESI galaxies and GIT candidates"
},
"message_text": "Anisha Anisha (LMU/University of Hamburg), Julius Gassert (LMU), Daniel Gruen (LMU), Lei Hu (Purple Mountain Observatory/Carnegie Mellon U.), Antonella Palmese (Carnegie Mellon U.), Arno Riffeser (LMU/MPE), Ananya Shankar (LMU)\n\nWith the 3kk imager at the 2m Fraunhofer telescope at Wendelstein Observatory, Germany, we have observed the highest probability candidate host galaxies based on their sky position and DESI spectroscopic redshift with respect to the 3D localization of event S230615az. Observations took place between MJD 60110.8 and MJD 60110.9, 3-4 hours after the gravitational wave candidate event. Using Legacy Survey DR10 imaging as a template where available, we perform difference imaging and do not detect any viable candidate counterparts. We report the following upper limits within a ~7âx7â field around the given coordinates:\n\nRA(J2000) [deg] | dec(J2000) [deg] | date_obs [UTC] | filters | lim_mag(AB, 5sigma) \n167.3605 | 29.5734 | 2023-06-15T21:27:32.858393 | r,i | 22.9, 22.7\n167.6634 | 28.3207 | 2023-06-15T21:48:52.763590 | r,i | 22.6, 22.6\n167.7216 | 30.1690 | 2023-06-15T21:38:13.808422 | r,i | 22.8, 22.6\n168.0171 | 27.5943 | 2023-06-15T21:16:55.039852 | r,i | 22.7, 22.5\n169.5725, 28.2641 | 2023-06-15T23:10:35.119420 | r,i | 22.6, 22.3\n174.2707 | 24.1003 | 2023-06-15T21:59:32.521545 | r,i | 22.3, 22.3\n175.6390 | 26.4931 | 2023-06-15T20:48:24.528448 | r,i | 22.6, 22.3\n149.4729| 36.3526 | 2023-06-15T21:06:05.721774 | r,i | 22.3, 22.3\n\nWe have also followed up the GROWTH-India candidate counterparts reported by GCN 33974 consistent with the gravitational wave event S230615az. We report the following upper limits:\n\nName | date_obs [UTC] | filters | lim_mag(AB, 5sigma) \nGIT230615aa | 2023-06-15T22:29:56.229398 | r | 22.7\nGIT230615ab | 2023-06-15T22:38:41.867278 | g | 21.9\nGIT230615ab |2023-06-15T22:47:20.897141| r | 22.7\n\nMagnitudes are not corrected for Milky Way extinction.\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg3MjcyOTQwLCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.jFZ6aB9eqIVS1Dr0Y-CqHXVEoDzAa_EcFuW9YcvxUoM\n\n",
"published": "2023-06-20T14:55:51.295159Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-20T14:55:51.295179Z",
"modified": "2023-06-20T14:55:51.301994Z",
"targets": []
},
{
"id": 397,
"topic": "gcn.circular",
"uuid": "05fd3e1a-1d24-475d-8a12-3220a85ff993",
"title": "LIGO/Virgo/KAGRA S230615az: GRANDMA observations of GOTO and GIT candidates",
"submitter": "Hop gcn.circular",
"authors": "Aleksandra Pyshna at Astronomical Observatory of Taras Shevchenko National University of Kyiv, Kyiv, Ukraine <pyshnaya.sasha@gmail.com>",
"data": {
"date": "23/06/19 10:22:54 GMT",
"from": "Aleksandra Pyshna at Astronomical Observatory of Taras Shevchenko National University of Kyiv, Kyiv, Ukraine <pyshnaya.sasha@gmail.com>",
"title": "GCN CIRCULAR",
"number": "34020",
"subject": "LIGO/Virgo/KAGRA S230615az: GRANDMA observations of GOTO and GIT candidates"
},
"message_text": "R. Strausbaugh (UMN), O. Pyshna (AO TSNU of Kyiv), T. du Laz (CIT),\nS. Pormente (OCA), A. Takey, A. Shokry, A. Fouad, M. Molham, A. Tawfeek\n(NRIAG), S. Antier (OCA), M. Coughlin (UMN), P. Hello (IJCLAB),\nS. Karpov, M. Prouza, M. MaÅ¡ek, M. Blazek (FZU), A. Klotz (IRAP),\nT. Pradier (Univ. Strasbourg), I. Tosta e Melo (UNICT), D. Turpin (CEA),\nO.Burkhonov (UBAI), S.Ehgamberdiev (UBAI, NUUz), Y.Rajabov (UBAI),\nT.Sadibekova (UBAI-CEA), Y.Tillayev (UBAI, NUUz), Xinglong ,\nF. Guo (THU), X. F. Wang (THU), Y. Zhu (NAOC), J. Zhang (NAOC),\nR. Inasaridze, R. Natsvlishvili, N. Kochiashvili, S. Beradze,\nV.Aivazyan (AbAO), report on behalf of the GRANDMA collaboration:\n\nThe GRANDMA telescope network responded to the GOTO and GIT triggers\nfrom LIGO/Virgo/KAGRA S230615az (Gompertz et al., GCN 33979, Kumar et al.,\nGCN 33974, TNS 2023kvr).\n\nThe first observations started 20 hours after the reported detection\ntime from the sources candidates.\n\nAs time reference (T0), we choose:\nfor GOTO23hn 2023-06-15T21:27:14.688 UT (60110.89392 MJD)\nfor GOTO23hu 2023-06-15T21:35:15.936 UT (60110.89949 MJD)\nfor GIT230615aa 2023-06-15T18:30:26.928 UT (60110.77114 MJD)\nfor GIT230615ab 2023-06-15T18:53:10.838 UT (60110.78693 MJD)\n\nIn the following table we report a subset of the preliminary photometry\nof our observations. Upper limits are reported as the faintest\nsource detected in frame; magnitudes and upper limits are reported\nin the AB system.\n\nGOTO23hn:\nT-T0 (day) |MJD | Obser. |Exposure| Filter | Mag +/- err |Upp.Lim. (AB)\n________________________________________________________________________\n0.847|60111.74163|AbAO-T70|14x60s|R| - | > 20.6\n0.956|60111.84993|KAO|7x120s|sdssr| 18.9 +/- 0.05 | -\n1.038|60111.93207|FRAM-CTA-N|28x120s|R| - | > 18.7\n\n\nGOTO23hu:\nT-T0 (day) |MJD | Obser. |Exposure| Filter | Mag +/- err |Upp.Lim. (AB)\n________________________________________________________________________\n0.862|60111.76180|AbAO-T70|15Ã60s|R| - | > 20.9\n0.984|60111.88393|FRAM-CTA-N|29x120s|R| - | > 18.6\n\n\nGIT230615aa:\nT-T0 (day) |MJD | Obser. |Exposure| Filter | Mag +/- err |Upp.Lim. (AB)\n________________________________________________________________________\n0.939|60111.71026|UBAI-NT60|10x180s|R| - | > 20.3\n0.942|60111.72810|SNOVA|2x180s|C| - | > 19.2\n1.099|60111.87106|KAO|7x120s|sdssr| - | > 20.3\n\n\nGIT230615ab:\nT-T0 (day) |MJD | Obser. |Exposure| Filter | Mag +/- err |Upp.Lim. (AB)\n________________________________________________________________________\n0.954|60111.72906|SNOVA|1x180s|C| - | > 18.5\n0.997|60111.78488|AbAO-T70|12Ã60s|R| - | > 21\n1.037|60111.82444|KAO| 7x120s |sdssr| - | > 21.3\n\nKAO data has been calibrated with respect to the PS1 catalog.\nFRAM-CTA-N data has been calibrated with respect to the APASS catalog.\nAbastumani-T70 data has been calibrated with respect to the PS1 catalog.\n\nThis single detection of GOTO23hn indicates that the source is either flat\nor increasing in brightness, but we note the difficulty of comparing\nthis narrow-band value to the original wide-band detection by GOTO.\n\nGRANDMA is a worldwide coordinated telescope network\n(grandma.ijclab.in2p3.fr) devoted to the observation of transients\nin the context of multi-messenger astrophysics (Antier et al. 2020 MNRAS\n497, 5518). Kilonova-Catcher (KNC) is the citizen science program of\nGRANDMA (http://kilonovacatcher.in2p3.fr/).\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg3MTcwMTc5LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.weVR6f-gQ965yiJtjSeQ6n2g2UF3tDJasBoOxAvN59E\n\n",
"published": "2023-06-19T10:23:04.814157Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-19T10:23:04.814176Z",
"modified": "2023-06-19T10:23:04.821178Z",
"targets": []
},
{
"id": 348,
"topic": "gcn.circular",
"uuid": "95fe2314-968a-4a82-9668-7bf71dd72586",
"title": "LIGO/Virgo S230615an: Global MASTER-Net observations report",
"submitter": "Hop gcn.circular",
"authors": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"data": {
"date": "23/06/18 09:28:50 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "34003",
"subject": "LIGO/Virgo S230615an: Global MASTER-Net observations report"
},
"message_text": "V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko,\nG.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin\n(Lomonosov Moscow State University, SAI, Physics Department),\n\nR. Podesta, C.Lopez, F. Podesta, C.Francile\n(Observatorio Astronomico Felix Aguilar OAFA),\n\nR. Rebolo, M. Serra\n(The Instituto de Astrofisica de Canarias),\n\nD. Buckley\n(South African Astronomical Observatory),\n\nO.A. Gres, N.M. Budnev\n(Irkutsk State University, API),\n\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez\n(INAOE, Guillermo Haro Astrophysics Observatory),\n\nA. Tlatov, D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nA. Gabovich, V.Yurkov\n(Blagoveschensk Educational State University)\n\n\nMASTER-OAFA robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Argentina (OAFA observatory of San Juan National University) started inspect of the LIGO/Virgo S230615an errorbox 1 days 54971 sec after notice time and 1 days 55025 sec after trigger time at 2023-06-17 04:52:27 UT, with upper limit up to 17.1 mag. The observations began at zenith distance = 47 deg. The sun altitude is -81.5 deg.\n\nThe galactic latitude b = 13 deg., longitude l = 288 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/ligo_1.php?id\u0012040\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 141515 | 2023-06-17 04:52:27 | MASTER-OAFA | (14h 21m 06.69s , -64d 38m 49.5s) | C | 180 | 17.1 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg3MDgwNTMyLCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.92asU_SryKSKpFlMpEPJbPnMAGEPbCjTJHfsUX0BjcU\n\n",
"published": "2023-06-18T09:28:56.039901Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-18T09:28:56.039922Z",
"modified": "2023-06-18T09:28:56.045817Z",
"targets": []
},
{
"id": 347,
"topic": "gcn.circular",
"uuid": "847d7b99-8eb8-49d0-9aa5-68f96ee98de2",
"title": "LIGO/Virgo S230615ak: Global MASTER-Net observations report",
"submitter": "Hop gcn.circular",
"authors": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"data": {
"date": "23/06/18 09:28:41 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "34002",
"subject": "LIGO/Virgo S230615ak: Global MASTER-Net observations report"
},
"message_text": "V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko,\nG.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin\n(Lomonosov Moscow State University, SAI, Physics Department),\n\nR. Podesta, C.Lopez, F. Podesta, C.Francile\n(Observatorio Astronomico Felix Aguilar OAFA),\n\nR. Rebolo, M. Serra\n(The Instituto de Astrofisica de Canarias),\n\nD. Buckley\n(South African Astronomical Observatory),\n\nO.A. Gres, N.M. Budnev\n(Irkutsk State University, API),\n\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez\n(INAOE, Guillermo Haro Astrophysics Observatory),\n\nA. Tlatov, D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nA. Gabovich, V.Yurkov\n(Blagoveschensk Educational State University)\n\n\nMASTER-OAFA robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Argentina (OAFA observatory of San Juan National University) started inspect of the LIGO/Virgo S230615ak errorbox 2 days 63328 sec after notice time and 2 days 63395 sec after trigger time at 2023-06-18 07:01:58 UT, with upper limit up to 18.7 mag. The observations began at zenith distance = 52 deg. The sun altitude is -56.7 deg.\n\nThe galactic latitude b = 10 deg., longitude l = 31 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/ligo_1.php?id\u0012038\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 163630 | 2023-06-17 10:52:23 | MASTER- | (18h 05m 49.44s , +45d 11m 01.8s) | C | 20 | 17.9 |\n 163670 | 2023-06-17 10:53:03 | MASTER- | (18h 05m 46.44s , +45d 12m 38.1s) | C | 20 | 17.7 |\n 163715 | 2023-06-17 10:53:43 | MASTER- | (18h 05m 46.90s , +45d 11m 05.5s) | C | 30 | 16.4 |\n 163770 | 2023-06-17 10:54:32 | MASTER- | (18h 05m 49.69s , +45d 12m 07.4s) | C | 40 | 18.6 |\n 163835 | 2023-06-17 10:55:32 | MASTER- | (18h 05m 44.00s , +45d 11m 24.5s) | C | 50 | 18.7 |\n 163915 | 2023-06-17 10:56:42 | MASTER- | (18h 05m 43.98s , +45d 12m 16.4s) | C | 70 | 18.6 |\n 164015 | 2023-06-17 10:58:13 | MASTER- | (18h 05m 49.76s , +45d 11m 09.7s) | C | 90 | 18.0 |\n 164135 | 2023-06-17 11:00:02 | MASTER- | (18h 05m 43.17s , +45d 09m 54.8s) | C | 110 | 18.3 |\n 236286 | 2023-06-18 07:01:58 | MASTER-OAFA | (17h 50m 54.68s , +09d 20m 18.5s) | C | 180 | 18.5 |\n 236708 | 2023-06-18 07:09:00 | MASTER-OAFA | (17h 59m 07.21s , +09d 20m 04.0s) | C | 180 | 18.7 |\n 237130 | 2023-06-18 07:16:02 | MASTER-OAFA | (17h 50m 59.97s , +09d 19m 17.5s) | C | 180 | 18.6 |\n 237551 | 2023-06-18 07:23:04 | MASTER-OAFA | (17h 59m 03.08s , +09d 18m 57.4s) | C | 180 | 18.6 |\n 238141 | 2023-06-18 07:32:54 | MASTER-OAFA | (17h 46m 00.23s , +07d 25m 15.1s) | C | 180 | 18.4 |\n 238353 | 2023-06-18 07:36:25 | MASTER-OAFA | (17h 54m 09.26s , +07d 25m 10.8s) | C | 180 | 18.5 |\n 238564 | 2023-06-18 07:39:57 | MASTER-OAFA | (17h 57m 05.16s , +11d 14m 27.7s) | C | 180 | 18.7 |\n 238777 | 2023-06-18 07:43:29 | MASTER-OAFA | (18h 05m 13.87s , +11d 12m 45.6s) | C | 180 | 18.5 |\n 239247 | 2023-06-18 07:51:20 | MASTER-OAFA | (17h 54m 01.64s , +07d 25m 54.2s) | C | 180 | 18.5 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg3MDgwNTI2LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.oZOJWFcMYfDTFi-0MRn2MCby0aXaQCB9y0ykD0nhaws\n\n",
"published": "2023-06-18T09:28:52.012422Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-18T09:28:52.012442Z",
"modified": "2023-06-18T09:28:52.017897Z",
"targets": []
},
{
"id": 318,
"topic": "gcn.circular",
"uuid": "d8fc8147-99ae-4e93-b634-e43a7bc14f52",
"title": "LIGO/Virgo/KAGRA S230615az: T80S Search and Candidate Counterpart Identification",
"submitter": "Hop gcn.circular",
"authors": "André Santos <andsouzasanttos@gmail.com>",
"data": {
"date": "23/06/17 22:15:01 GMT",
"from": "André Santos <andsouzasanttos@gmail.com>",
"title": "GCN CIRCULAR",
"number": "33986",
"subject": "LIGO/Virgo/KAGRA S230615az: T80S Search and Candidate Counterpart Identification"
},
"message_text": "A. Santos (CBPF/Fermilab), C. D. Kilpatrick (Northwestern), C. R. Bom (CBPF), Eduardo Lacerda (IAG-USP) report on behalf of the STEP-GW collaboration:\n\nWe conducted an optical search for candidate counterparts in the localization region of LVK gravitational wave event S230615az with the T80S 0.8-m robotic telescope using the 1.4 x 1.4 field-of-view camera. The tiling was optimally determined using the latest localization map from the LVK and galaxy catalogs in Teglon (Coulter et al., in prep.). In total, T80S observed 24 fields (68 individual exposures at total) within the 90th percentile localization region of S230615az. All of our completed pointings have been uploaded to the GW Treasure Map (Wyatt et al., 2020) at https://treasuremap.space/alerts?graceids=S230615az.\n\nSubtracting DECam and SkyMapper template images from the T80S images using photpipe (Rest et al., 2005), we identified the following candidate counterpart in our imaging:\n\nName MJD RA(deg) Dec(deg) Filter Mag Magerr \nSTEP23a 60111.4340 40.79975 -46.65150667 g 19.806 0.09\n\nWe have checked the Minor Planet Center and Transient Name Server, finding no previously reported solar system object or transient. We encourage follow-up observations of this source.\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg3MDQwMTA2LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.9WByuMPLSJHA4jlT3Q5b4MJnQu14ukeUKkgnjKeYh1I\n\n",
"published": "2023-06-17T22:15:15.291745Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-17T22:15:15.291766Z",
"modified": "2023-06-17T22:15:15.300124Z",
"targets": []
},
{
"id": 315,
"topic": "gcn.circular",
"uuid": "102a1947-1bf5-4197-8531-80a010a6078c",
"title": "LIGO/Virgo/KAGRA S230615az: Non-Detections of GROWTH-India Candidates from GECKO Optical Observations",
"submitter": "Hop gcn.circular",
"authors": "Gregory Paek at Seoul National University <gregorypaek94@gmail.com>",
"data": {
"date": "23/06/17 13:54:22 GMT",
"from": "Gregory Paek at Seoul National University <gregorypaek94@gmail.com>",
"title": "GCN CIRCULAR",
"number": "33985",
"subject": "LIGO/Virgo/KAGRA S230615az: Non-Detections of GROWTH-India Candidates from GECKO Optical Observations"
},
"message_text": "Gregory S.-H. Paek (SNU ARC/SNU), Myungshin Im (SNU ARC/SNU), and Hyun-Il Sung (KASI), on behalf of the GECKO Team\n\nWe report the optical observations conducted with the LOAO telescopes of two optical counterpart candidates, GIT230615aa, and GIT230615ab (H. Kumar, GCN 33974) of the LIGO/Virgo/KAGRA gravitational-wave event, S230615az. The LOAO is a 1.0-meter class telescope in the USA. The LOAO observation started at 2023-06-16 05:03 (UT) or about 0.46 days after the GW alert in R-band. We calibrated flux with the PANSTARRS catalog and used an AB magnitude system. As a result, we could not detect any significant signals from the candidates. Furthermore, observations taken approximately 0.8 days after the GW alert also reported the non-detection of both candidates (Z.P. Zhu, GCN 33981). The preliminary 5 sigma depths of these images are below:\n\nOBJECT DATE-OBS[UTC] t-t0[days] FILTER EXPTIME DEPTH\nGIT230615aa 2023-06-16T05:03:20 0.46 R 180s*10 21.0\nGIT230615ab 2023-06-16T05:23:51 0.48 R 180s*10 20.8\n\nGravitational-wave EM Counterpart Korean Observatory (GECKO) is a network of 10+ 0.5m to 1m class telescopes worldwide. The Korea Astronomy and Space Science Institute operates LOAO. We thank the LOAO operators for their support for the observations.\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg3MDEwMDY4LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.TATr9FrPKZSt1II4nscsLbqi908zwFL3w9AYk8znPtU\n\n",
"published": "2023-06-17T13:54:33.291619Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-17T13:54:33.291655Z",
"modified": "2023-06-17T13:54:33.301597Z",
"targets": []
},
{
"id": 307,
"topic": "gcn.circular",
"uuid": "6ff1ca72-fa3a-4d54-b398-57219dc1ba2d",
"title": "LIGO/Virgo/KAGRA S230615az: Xinglong-2.16m photometric observations of GIT candidates",
"submitter": "Hop gcn.circular",
"authors": "Dong Xu at NAOC/CAS <dxu@nao.cas.cn>",
"data": {
"date": "23/06/17 03:35:17 GMT",
"from": "Dong Xu at NAOC/CAS <dxu@nao.cas.cn>",
"title": "GCN CIRCULAR",
"number": "33981",
"subject": "LIGO/Virgo/KAGRA S230615az: Xinglong-2.16m photometric observations of GIT candidates"
},
"message_text": "Z.P. Zhu (NAOC, HUST), D. Xu, S.Y. Fu, X. Liu, S.Q. Jiang, T.H. Lu (NAOC) report:\n\nWe observed the field of the GW trigger S230615z candidates reported by GIT (Kumar et al., GCN 33974) with the 2.16m telescope located at Xinglong, Hebei, China, equipped with the BFOSC camera. Observations started at 12:47:19 UT on 2023-06-16 (i.e., 0.8 day after the GW trigger time), and 5x300 s frames were obtained in the R-band for either candidate.\n\nNo source is detected in our stacked images at either candidate's position (Kumar et al., GCN 33974), down to an upper limit of R~22.1 mag for both, calibrated with the nearby Pan-STARRS field.\n\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg2OTcyOTIyLCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.FUZPpHJorngEeL1sjln0cTbPsffIeRK81QJvKtMktcU\n\n",
"published": "2023-06-17T03:35:28.422195Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-17T03:35:28.422215Z",
"modified": "2023-06-17T03:35:28.428487Z",
"targets": []
},
{
"id": 305,
"topic": "gcn.circular",
"uuid": "fb381915-c571-4fed-ad6b-b24164cc4138",
"title": "LIGO/Virgo/KAGRA S230615az: GOTO candidate counterparts",
"submitter": "Hop gcn.circular",
"authors": "Ben Gompertz at U of Birmingham <b.gompertz@bham.ac.uk>",
"data": {
"date": "23/06/16 15:47:29 GMT",
"from": "Ben Gompertz at U of Birmingham <b.gompertz@bham.ac.uk>",
"title": "GCN CIRCULAR",
"number": "33979",
"subject": "LIGO/Virgo/KAGRA S230615az: GOTO candidate counterparts"
},
"message_text": "B. Gompertz, R. Kotak, J. Lyman, D. O'Neill, B. Godson, A. Kumar, P. Clark, K. Wiersema, L. Kelsey, M. Kennedy, G. Ramsay, K. Ackley, K. Ulaczyk, M. Dyer, T. Killestein, D. Steeghs, D. K. Galloway, V. Dhillon, P. O'Brien, D. Pollacco, K. Noysena, L. Nuttall, E. Pallé, report on behalf of the GOTO collaboration:\n\n\nWe report on optical observations with the Gravitational-wave Optical Transient Observer (GOTO; Steeghs et al. 2021) in response to the LIGO/Virgo candidate BNS event S230615az. Targeted observations covering 686 sqr. degrees or 24.1% of the localisation probability of the BAYESTAR skymap were performed between 21:16 UT June 15 and 00:35 UT June 16 2023 (3.43 to 6.75 hours after trigger).\n\n\nExposures were taken in L-band (400-700 nm passband) and the median 5 sigma depth was 20.3 AB magnitudes.\n\n\nImages were processed immediately after acquisition using the GOTO pipeline. Difference imaging was performed using recent survey observations of the same pointings. Source candidates were initially filtered using a classifier (Killestein et al. 2021) and cross-matched against a variety of contextual and minor planet catalogues. Human vetting was carried out in real time on any candidates that passed the above checks.\n\n\nWithin the 90% localisation region of the LVK skymap, we identify two priority candidate counterparts. Both are associated with catalogued galaxies that have photometric redshifts consistent with the GW distance posterior. We find no evidence of these sources prior to the GW alert in previous GOTO observations or the ZTF observations provided by the Lasair broker (Smith et al. 2019). We note possible low significance pre-GW flux in the ATLAS forced photometry server (Shingles et al. 2021) for GOTO23hn.\n\n\nName | RA(J2000) | Dec(J2000) | Filter | Mag(AB) | D_L(Mpc) | Catalog\n\nGOTO23hn | 12:40:35.55 | +17:02:15.27 | L | 19.49 +/- 0.10 | 278.0 | WISExSuperCOSMOS\n\nGOTO23hu | 13:22:55.23 | +08:09:49.57 | L | 19.43 +/- 0.08 | 245.6 | GLADE+\n\n\nMagnitudes were calibrated using ATLAS-REFCAT2 (Tonry et al. 2018) and not corrected for Galactic extinction.\n\n\nObservations are ongoing.\n\nGOTO (https://goto-observatory.org) is a network of telescopes operated at the Roque de los Muchachos Observatory on La Palma, Spain and Siding Spring Observatory in NSW, Australia; on behalf of a consortium including the University of Warwick, Monash University, Armagh Observatory & Planetarium, the University of Leicester, the University of Sheffield, the National Astronomical Research Institute of Thailand (NARIT), University of Turku, University of Portsmouth, University of Manchester and the Instituto de Astrofisica de Canarias (IAC)\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\n[object Promise]\n\n",
"published": "2023-06-16T15:47:43.063296Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-16T15:47:43.063318Z",
"modified": "2023-06-16T15:47:43.070851Z",
"targets": []
},
{
"id": 297,
"topic": "gcn.circular",
"uuid": "98783133-b521-4994-9d7a-d5d36ad75d82",
"title": "LIGO/Virgo S230615af: Global MASTER-Net observations report",
"submitter": "Hop gcn.circular",
"authors": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"data": {
"date": "23/06/16 06:55:04 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "33976",
"subject": "LIGO/Virgo S230615af: Global MASTER-Net observations report"
},
"message_text": "V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko,\nG.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin\n(Lomonosov Moscow State University, SAI, Physics Department),\n\nR. Podesta, C.Lopez, F. Podesta, C.Francile\n(Observatorio Astronomico Felix Aguilar OAFA),\n\nR. Rebolo, M. Serra\n(The Instituto de Astrofisica de Canarias),\n\nD. Buckley\n(South African Astronomical Observatory),\n\nO.A. Gres, N.M. Budnev\n(Irkutsk State University, API),\n\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez\n(INAOE, Guillermo Haro Astrophysics Observatory),\n\nA. Tlatov, D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nA. Gabovich, V.Yurkov\n(Blagoveschensk Educational State University)\n\n\nMASTER-OAFA robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Argentina (OAFA observatory of San Juan National University) started inspect of the LIGO/Virgo S230615af errorbox 57882 sec after notice time and 57927 sec after trigger time at 2023-06-16 04:59:37 UT, with upper limit up to 19.1 mag. The observations began at zenith distance = 68 deg. The sun altitude is -80.6 deg.\n\nThe galactic latitude b = 3 deg., longitude l = 94 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/ligo_1.php?id\u0012032\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 58017 | 2023-06-16 04:59:37 | MASTER-OAFA | (13h 13m 03.13s , -13d 22m 17.5s) | C | 180 | 19.1 |\n 59033 | 2023-06-16 05:16:33 | MASTER-OAFA | (13h 13m 02.95s , -13d 21m 33.4s) | C | 180 | 19.0 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n",
"published": "2023-06-16T06:55:09.059760Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-16T06:55:09.059780Z",
"modified": "2023-06-16T06:55:09.064970Z",
"targets": []
},
{
"id": 293,
"topic": "gcn.circular",
"uuid": "53ab81a3-1b79-4ffa-9aa6-3c9cfe1498d5",
"title": "LIGO/Virgo/KAGRA S230615az: GROWTH-India candidates",
"submitter": "Hop gcn.circular",
"authors": "Vishwajeet Swain at IIT Bombay <vishwajeet.s@iitb.ac.in>",
"data": {
"date": "23/06/15 23:47:06 GMT",
"from": "Vishwajeet Swain at IIT Bombay <vishwajeet.s@iitb.ac.in>",
"title": "GCN CIRCULAR",
"number": "33974",
"subject": "LIGO/Virgo/KAGRA S230615az: GROWTH-India candidates"
},
"message_text": "H. Kumar (IITB), V. Swain (IITB), A. Salgundi (IITB), K. Angail (IAO), V. Bhalerao (IITB), G. C. Anupama (IIA), S. Barway (IIA) report on behalf of the GIT team:\n\nWe followed up the sky localisation of the gravitational wave trigger S230615az with the 0.7m GROWTH-India telescope. We obtained multiple 300-sec exposures in the r' filter starting at 2023-06-15T17:56:40 UT, 6.55 minutes after the trigger. By targeting galaxies in the region, we covered 0.4% of the source probability on the sky, based on the \"bayestar.multiorder.fits,1\" map. After performing image subtraction, vetting, and a cross-check with minor planet centre, we obtained the following two transient candidates within the 90% localisation region of the event:\n\n|--------------|----------------|-------------|-------------|--------|----------------|\n| Name | JD | RA(J2000) | Dec(J2000) | Filter | Mag (AB) |\n|--------------|----------------|-------------|-------------|--------|----------------|\n| GIT230615aa | 2460111.271145 | 12:50:03.64 | 20:53:21.77 | r' | 20.05 +/- 0.06 |\n| GIT230615ab | 2460111.286931 | 12:42:11.65 | 22:03:25.08 | r' | 19.81 +/- 0.05 |\n|--------------|----------------|-------------|-------------|--------|----------------|\n\nGIT230615aa was detected in two images separated by 17 minutes. There is no significant fading between the two images. We could not get a second confirmation image for GIT230615ab as the source was set soon after the first image.\n\nThe magnitudes are calibrated against PanSTARRS DR1 (Chambers et al., 2016) and not corrected for Galactic extinction.\n\nThe GROWTH India Telescope (GIT) is a 70-cm telescope with a 0.7-degree field of view, set up by the Indian Institute of Astrophysics (IIA) and the Indian Institute of Technology Bombay (IITB) with funding from DST-SERB and IUSSTF. It is located at the Indian Astronomical Observatory (Hanle), operated by IIA. We acknowledge funding by the IITB alumni batch of 1994, which partially supports the operations of the telescope. Telescope technical details are available at https://sites.google.com/view/growthindia/.\n\n",
"published": "2023-06-15T23:47:15.979576Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-15T23:47:15.979595Z",
"modified": "2023-06-15T23:47:15.987203Z",
"targets": []
},
{
"id": 292,
"topic": "gcn.circular",
"uuid": "b726335d-d94c-4fa7-bde9-83d92e4470b4",
"title": "LIGO/Virgo S230615av: Global MASTER-Net observations report",
"submitter": "Hop gcn.circular",
"authors": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"data": {
"date": "23/06/15 23:12:41 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "33973",
"subject": "LIGO/Virgo S230615av: Global MASTER-Net observations report"
},
"message_text": "V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko,\nG.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin\n(Lomonosov Moscow State University, SAI, Physics Department),\n\nR. Podesta, C.Lopez, F. Podesta, C.Francile\n(Observatorio Astronomico Felix Aguilar OAFA),\n\nR. Rebolo, M. Serra\n(The Instituto de Astrofisica de Canarias),\n\nD. Buckley\n(South African Astronomical Observatory),\n\nO.A. Gres, N.M. Budnev\n(Irkutsk State University, API),\n\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez\n(INAOE, Guillermo Haro Astrophysics Observatory),\n\nA. Tlatov, D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nA. Gabovich, V.Yurkov\n(Blagoveschensk Educational State University)\n\n\nMASTER-OAFA robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Argentina (OAFA observatory of San Juan National University) started inspect of the LIGO/Virgo S230615av errorbox 23484 sec after notice time and 23534 sec after trigger time at 2023-06-15 22:40:40 UT, with upper limit up to 18.6 mag. Observations started at twilight. The observations began at zenith distance = 48 deg. The sun altitude is -12.9 deg.\n\nThe galactic latitude b = 19 deg., longitude l = 356 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/ligo_1.php?id\u0012046\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 23624 | 2023-06-15 22:40:40 | MASTER-OAFA | (13h 11m 22.48s , +11d 23m 59.1s) | C | 180 | 18.6 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n",
"published": "2023-06-15T23:12:50.199165Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-15T23:12:50.199186Z",
"modified": "2023-06-15T23:12:50.205448Z",
"targets": []
},
{
"id": 291,
"topic": "gcn.circular",
"uuid": "1dec8693-73c0-443c-a81f-9be1245c1a8b",
"title": "LIGO/Virgo S230615az: Global MASTER-Net observations report",
"submitter": "Hop gcn.circular",
"authors": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"data": {
"date": "23/06/15 22:48:27 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "33972",
"subject": "LIGO/Virgo S230615az: Global MASTER-Net observations report"
},
"message_text": "V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko,\nG.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin\n(Lomonosov Moscow State University, SAI, Physics Department),\n\nR. Podesta, C.Lopez, F. Podesta, C.Francile\n(Observatorio Astronomico Felix Aguilar OAFA),\n\nR. Rebolo, M. Serra\n(The Instituto de Astrofisica de Canarias),\n\nD. Buckley\n(South African Astronomical Observatory),\n\nO.A. Gres, N.M. Budnev\n(Irkutsk State University, API),\n\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez\n(INAOE, Guillermo Haro Astrophysics Observatory),\n\nA. Tlatov, D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nA. Gabovich, V.Yurkov\n(Blagoveschensk Educational State University)\n\n\nMASTER-OAFA robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Argentina (OAFA observatory of San Juan National University) started inspect of the LIGO/Virgo S230615az errorbox 16917 sec after notice time and 17005 sec after trigger time at 2023-06-15 22:33:33 UT, with upper limit up to 17.7 mag. Observations started at twilight. The observations began at zenith distance = 48 deg. The sun altitude is -11.4 deg.\n\nThe galactic latitude b = -65 deg., longitude l = 264 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/ligo_1.php?id\u0012054\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 17096 | 2023-06-15 22:33:33 | MASTER-OAFA | (13h 03m 20.61s , +11d 23m 55.0s) | C | 180 | 17.7 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n",
"published": "2023-06-15T22:48:29.715137Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-15T22:48:29.715157Z",
"modified": "2023-06-15T22:48:29.719967Z",
"targets": []
},
{
"id": 290,
"topic": "gcn.circular",
"uuid": "05102034-1900-4e5a-8aa9-46ecfdb1f2ab",
"title": "LIGO/Virgo S230615ax: Global MASTER-Net observations report",
"submitter": "Hop gcn.circular",
"authors": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"data": {
"date": "23/06/15 22:48:05 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "33971",
"subject": "LIGO/Virgo S230615ax: Global MASTER-Net observations report"
},
"message_text": "V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko,\nG.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin\n(Lomonosov Moscow State University, SAI, Physics Department),\n\nR. Podesta, C.Lopez, F. Podesta, C.Francile\n(Observatorio Astronomico Felix Aguilar OAFA),\n\nR. Rebolo, M. Serra\n(The Instituto de Astrofisica de Canarias),\n\nD. Buckley\n(South African Astronomical Observatory),\n\nO.A. Gres, N.M. Budnev\n(Irkutsk State University, API),\n\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez\n(INAOE, Guillermo Haro Astrophysics Observatory),\n\nA. Tlatov, D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nA. Gabovich, V.Yurkov\n(Blagoveschensk Educational State University)\n\n\nMASTER-OAFA robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Argentina (OAFA observatory of San Juan National University) started inspect of the LIGO/Virgo S230615ax errorbox 21647 sec after notice time and 21809 sec after trigger time at 2023-06-15 22:33:33 UT, with upper limit up to 17.7 mag. Observations started at twilight. The observations began at zenith distance = 48 deg. The sun altitude is -11.4 deg.\n\nThe galactic latitude b = -16 deg., longitude l = 151 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/ligo_1.php?id\u0012048\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 21900 | 2023-06-15 22:33:33 | MASTER-OAFA | (13h 03m 20.61s , +11d 23m 55.0s) | C | 180 | 17.7 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n",
"published": "2023-06-15T22:48:10.661331Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-15T22:48:10.661351Z",
"modified": "2023-06-15T22:48:10.666246Z",
"targets": []
}
]
},
{
"event_id": "S230616j",
"sequences": [
{
"id": 104,
"sequence_number": 1,
"sequence_type": "PRELIMINARY",
"message": {
"id": 294,
"topic": "igwn.gwalert",
"uuid": "c7b8204f-26ee-4feb-b918-bfc0372294b1",
"title": "S230616j - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230616j/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230616j/view/"
},
"event": {
"far": 7.29826e-06,
"time": "2023-06-16T04:24:14.371Z",
"group": "Burst",
"search": "BBH",
"area_50": 882.9369147621477,
"area_90": 3273.245216323551,
"duration": 0.006485,
"pipeline": "CWB",
"properties": {},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "376da6a8cdc019db6e699166aa75a467",
"classification": {},
"skymap_version": 0,
"central_frequency": 131.619812
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-06-16T04:25:22Z",
"superevent_id": "S230616j",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-16T04:25:24.022002Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-16T04:25:24.022027Z",
"modified": "2023-06-16T04:25:24.028898Z"
}
},
{
"id": 105,
"sequence_number": 2,
"sequence_type": "PRELIMINARY",
"message": {
"id": 295,
"topic": "igwn.gwalert",
"uuid": "adf2db69-5cba-41a7-8c44-763283d5d8d9",
"title": "S230616j - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230616j/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230616j/view/"
},
"event": {
"far": 7.29826e-06,
"time": "2023-06-16T04:24:14.371Z",
"group": "Burst",
"search": "BBH",
"area_50": 882.9369147621477,
"area_90": 3273.245216323551,
"duration": 0.006485,
"pipeline": "CWB",
"properties": {},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "376da6a8cdc019db6e699166aa75a467",
"classification": {},
"skymap_version": 0,
"central_frequency": 131.619812
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-06-16T04:29:57Z",
"superevent_id": "S230616j",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-16T04:29:58.521568Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-16T04:29:58.521593Z",
"modified": "2023-06-16T04:29:58.526340Z"
}
}
],
"references": [
{
"id": 296,
"topic": "gcn.circular",
"uuid": "3992fcdf-3f83-4ace-a1a3-4447a0863d02",
"title": "LIGO/Virgo S230616j: Global MASTER-Net observations report",
"submitter": "Hop gcn.circular",
"authors": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"data": {
"date": "23/06/16 06:53:34 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "33975",
"subject": "LIGO/Virgo S230616j: Global MASTER-Net observations report"
},
"message_text": "V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko,\nG.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin\n(Lomonosov Moscow State University, SAI, Physics Department),\n\nR. Podesta, C.Lopez, F. Podesta, C.Francile\n(Observatorio Astronomico Felix Aguilar OAFA),\n\nR. Rebolo, M. Serra\n(The Instituto de Astrofisica de Canarias),\n\nD. Buckley\n(South African Astronomical Observatory),\n\nO.A. Gres, N.M. Budnev\n(Irkutsk State University, API),\n\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez\n(INAOE, Guillermo Haro Astrophysics Observatory),\n\nA. Tlatov, D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nA. Gabovich, V.Yurkov\n(Blagoveschensk Educational State University)\n\n\nMASTER-OAFA robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Argentina (OAFA observatory of San Juan National University) started inspect of the LIGO/Virgo S230616j errorbox 10 sec after notice time and 139 sec after trigger time at 2023-06-16 04:26:33 UT, with upper limit up to 19.2 mag. The observations began at zenith distance = 71 deg. The sun altitude is -82.1 deg.\n\nThe galactic latitude b = -56 deg., longitude l = 240 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/ligo_1.php?id\u0012062\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 229 | 2023-06-16 04:26:33 | MASTER-OAFA | (13h 22m 12.19s , +09d 26m 42.0s) | C | 180 | 19.1 |\n 647 | 2023-06-16 04:33:31 | MASTER-OAFA | (13h 01m 51.41s , -09d 34m 12.2s) | C | 180 | 19.2 |\n 1052 | 2023-06-16 04:40:16 | MASTER-OAFA | (13h 10m 01.51s , -09d 32m 40.2s) | C | 180 | 19.3 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n",
"published": "2023-06-16T06:53:43.905225Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-16T06:53:43.905252Z",
"modified": "2023-06-16T06:53:43.912305Z",
"targets": []
}
]
},
{
"event_id": "S230615b",
"sequences": [],
"references": [
{
"id": 298,
"topic": "gcn.circular",
"uuid": "26c3bae1-81f9-451d-9dd7-2665e1f87f3b",
"title": "LIGO/Virgo S230615be: Global MASTER-Net observations report",
"submitter": "Hop gcn.circular",
"authors": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"data": {
"date": "23/06/16 06:55:36 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "33977",
"subject": "LIGO/Virgo S230615be: Global MASTER-Net observations report"
},
"message_text": "V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko,\nG.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin\n(Lomonosov Moscow State University, SAI, Physics Department),\n\nR. Podesta, C.Lopez, F. Podesta, C.Francile\n(Observatorio Astronomico Felix Aguilar OAFA),\n\nR. Rebolo, M. Serra\n(The Instituto de Astrofisica de Canarias),\n\nD. Buckley\n(South African Astronomical Observatory),\n\nO.A. Gres, N.M. Budnev\n(Irkutsk State University, API),\n\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez\n(INAOE, Guillermo Haro Astrophysics Observatory),\n\nA. Tlatov, D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nA. Gabovich, V.Yurkov\n(Blagoveschensk Educational State University)\n\n\nMASTER-OAFA robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Argentina (OAFA observatory of San Juan National University) started inspect of the LIGO/Virgo S230615be errorbox 40028 sec after notice time and 40102 sec after trigger time at 2023-06-16 05:08:48 UT, with upper limit up to 18.7 mag. The observations began at zenith distance = 58 deg. The sun altitude is -79.3 deg.\n\nThe galactic latitude b = 61 deg., longitude l = 124 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/ligo_1.php?id\u0012056\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 40192 | 2023-06-16 05:08:48 | MASTER-OAFA | (13h 10m 19.93s , -47d 33m 23.2s) | C | 180 | 18.7 |\n 40425 | 2023-06-16 05:12:41 | MASTER-OAFA | (13h 22m 21.51s , -47d 31m 52.1s) | C | 180 | 18.5 |\n 41121 | 2023-06-16 05:24:16 | MASTER-OAFA | (13h 10m 22.94s , -47d 32m 54.0s) | C | 180 | 18.7 |\n 41584 | 2023-06-16 05:31:59 | MASTER-OAFA | (13h 22m 17.37s , -47d 32m 19.2s) | C | 180 | 18.4 |\n 43011 | 2023-06-16 05:55:47 | MASTER-OAFA | (13h 36m 49.46s , -53d 15m 59.2s) | C | 180 | 18.1 |\n 43492 | 2023-06-16 06:03:48 | MASTER-OAFA | (13h 26m 15.43s , -51d 22m 26.9s) | C | 180 | 18.4 |\n 43755 | 2023-06-16 06:08:10 | MASTER-OAFA | (13h 17m 31.84s , -49d 28m 13.6s) | C | 180 | 18.3 |\n 44082 | 2023-06-16 06:13:37 | MASTER-OAFA | (13h 29m 55.36s , -49d 26m 35.1s) | C | 180 | 18.3 |\n 44313 | 2023-06-16 06:17:29 | MASTER-OAFA | (13h 26m 20.02s , -51d 21m 33.4s) | C | 180 | 18.2 |\n 44757 | 2023-06-16 06:24:52 | MASTER-OAFA | (13h 17m 33.10s , -49d 28m 35.4s) | C | 180 | 18.0 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n",
"published": "2023-06-16T06:55:40.309668Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-16T06:55:40.309702Z",
"modified": "2023-06-16T06:55:40.315268Z",
"targets": []
}
]
},
{
"event_id": "S230616s",
"sequences": [
{
"id": 106,
"sequence_number": 1,
"sequence_type": "PRELIMINARY",
"message": {
"id": 299,
"topic": "igwn.gwalert",
"uuid": "37174887-3ff3-4f9c-93b2-74a7e83b9918",
"title": "S230616s - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230616s/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230616s/view/"
},
"event": {
"far": 1.45995e-05,
"time": "2023-06-16T07:17:29.796Z",
"group": "Burst",
"search": "BBH",
"area_50": 454.89715570445253,
"area_90": 1295.0300945608308,
"duration": 0.017167,
"pipeline": "CWB",
"properties": {},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "029f0bd194062a84562b5cca47bc1dcb",
"classification": {},
"skymap_version": 0,
"central_frequency": 101.023613
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-06-16T07:18:47Z",
"superevent_id": "S230616s",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-16T07:18:47.501494Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-16T07:18:47.501517Z",
"modified": "2023-06-16T07:18:47.506385Z"
}
},
{
"id": 107,
"sequence_number": 2,
"sequence_type": "PRELIMINARY",
"message": {
"id": 300,
"topic": "igwn.gwalert",
"uuid": "321b0813-9607-4816-a2c4-cd9336cc9560",
"title": "S230616s - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230616s/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230616s/view/"
},
"event": {
"far": 1.45995e-05,
"time": "2023-06-16T07:17:29.796Z",
"group": "Burst",
"search": "BBH",
"area_50": 454.89715570445253,
"area_90": 1295.0300945608308,
"duration": 0.017167,
"pipeline": "CWB",
"properties": {},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "029f0bd194062a84562b5cca47bc1dcb",
"classification": {},
"skymap_version": 0,
"central_frequency": 101.023613
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-06-16T07:23:21Z",
"superevent_id": "S230616s",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-16T07:23:22.220775Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-16T07:23:22.220799Z",
"modified": "2023-06-16T07:23:22.225723Z"
}
}
],
"references": [
{
"id": 301,
"topic": "gcn.circular",
"uuid": "b15f60d8-dd72-4c4e-a4f1-8a9a36ffc515",
"title": "LIGO/Virgo S230616s: Global MASTER-Net observations report",
"submitter": "Hop gcn.circular",
"authors": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"data": {
"date": "23/06/16 07:35:04 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "33978",
"subject": "LIGO/Virgo S230616s: Global MASTER-Net observations report"
},
"message_text": "V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko,\nG.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin\n(Lomonosov Moscow State University, SAI, Physics Department),\n\nR. Podesta, C.Lopez, F. Podesta, C.Francile\n(Observatorio Astronomico Felix Aguilar OAFA),\n\nR. Rebolo, M. Serra\n(The Instituto de Astrofisica de Canarias),\n\nD. Buckley\n(South African Astronomical Observatory),\n\nO.A. Gres, N.M. Budnev\n(Irkutsk State University, API),\n\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez\n(INAOE, Guillermo Haro Astrophysics Observatory),\n\nA. Tlatov, D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nA. Gabovich, V.Yurkov\n(Blagoveschensk Educational State University)\n\n\nMASTER-OAFA robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Argentina (OAFA observatory of San Juan National University) started inspect of the LIGO/Virgo S230616s errorbox 103 sec after notice time and 201 sec after trigger time at 2023-06-16 07:20:50 UT, with upper limit up to 16.9 mag. The observations began at zenith distance = 35 deg. The sun altitude is -52.6 deg.\n\nThe galactic latitude b = -5 deg., longitude l = 36 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/ligo_1.php?id\u0012064\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 164 | 2023-06-16 07:19:57 | MASTER- | (19h 13m 58.68s , +01d 13m 41.9s) | C | 30 | 15.4 |\n 218 | 2023-06-16 07:20:47 | MASTER- | (19h 13m 58.59s , +01d 14m 51.4s) | C | 40 | 15.3 |\n 221 | 2023-06-16 07:20:50 | MASTER-OAFA | (19h 11m 54.62s , +00d 03m 31.0s) | C | 40 | 16.9 |\n 283 | 2023-06-16 07:21:47 | MASTER- | (19h 14m 04.32s , +01d 13m 09.4s) | C | 50 | 15.1 |\n 358 | 2023-06-16 07:22:57 | MASTER- | (19h 13m 57.48s , +01d 12m 27.8s) | C | 60 | 14.8 |\n 448 | 2023-06-16 07:24:16 | MASTER- | (19h 14m 04.35s , +01d 12m 20.5s) | C | 80 | 15.4 |\n 558 | 2023-06-16 07:25:56 | MASTER- | (19h 14m 01.44s , +01d 13m 48.1s) | C | 100 | 15.4 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n",
"published": "2023-06-16T07:35:12.968274Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-16T07:35:12.968316Z",
"modified": "2023-06-16T07:35:12.974678Z",
"targets": []
}
]
},
{
"event_id": "S230616aa",
"sequences": [
{
"id": 108,
"sequence_number": 1,
"sequence_type": "PRELIMINARY",
"message": {
"id": 302,
"topic": "igwn.gwalert",
"uuid": "b3129eb8-2335-4c42-bd57-5f6683ad76f1",
"title": "S230616aa - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230616aa/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230616aa/view/"
},
"event": {
"far": 2.295928e-05,
"time": "2023-06-16T13:37:33.233Z",
"group": "CBC",
"search": "AllSky",
"area_50": 1008.2014913099144,
"area_90": 8198.22032642268,
"duration": null,
"pipeline": "MBTA",
"properties": {
"HasNS": 1.0,
"HasMassGap": 0.0,
"HasRemnant": 0.0
},
"instruments": [
"MbtaL-Hon-clustered"
],
"significant": false,
"skymap_hash": "e70241410dc093f682492f0edd0a4355",
"classification": {
"BBH": 0.0,
"BNS": 0.0,
"NSBH": 0.000866174,
"Terrestrial": 0.999133826
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-06-16T13:38:08Z",
"superevent_id": "S230616aa",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-16T13:38:10.165095Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-16T13:38:10.165121Z",
"modified": "2023-06-16T13:38:10.172536Z"
}
},
{
"id": 109,
"sequence_number": 2,
"sequence_type": "PRELIMINARY",
"message": {
"id": 303,
"topic": "igwn.gwalert",
"uuid": "3e2cd480-89e2-4ecd-b4a3-fb407cd5daf0",
"title": "S230616aa - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230616aa/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230616aa/view/"
},
"event": {
"far": 2.295928e-05,
"time": "2023-06-16T13:37:33.233Z",
"group": "CBC",
"search": "AllSky",
"area_50": 1008.2014913099144,
"area_90": 8198.22032642268,
"duration": null,
"pipeline": "MBTA",
"properties": {
"HasNS": 1.0,
"HasMassGap": 0.0,
"HasRemnant": 0.0
},
"instruments": [
"MbtaL-Hon-clustered"
],
"significant": false,
"skymap_hash": "e70241410dc093f682492f0edd0a4355",
"classification": {
"BBH": 0.0,
"BNS": 0.0,
"NSBH": 0.000866174,
"Terrestrial": 0.999133826
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-06-16T13:42:45Z",
"superevent_id": "S230616aa",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-16T13:42:46.945653Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-16T13:42:46.945679Z",
"modified": "2023-06-16T13:42:46.950682Z"
}
}
],
"references": []
},
{
"event_id": "S230617ab",
"sequences": [
{
"id": 110,
"sequence_number": 1,
"sequence_type": "PRELIMINARY",
"message": {
"id": 311,
"topic": "igwn.gwalert",
"uuid": "15cc4b39-12b6-4675-97fe-bf4b61ec801c",
"title": "S230617ab - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230617ab/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230617ab/view/"
},
"event": {
"far": 1.15938e-05,
"time": "2023-06-17T10:50:50.554Z",
"group": "CBC",
"search": "AllSky",
"area_50": 281.2158269985666,
"area_90": 1334.2670724744523,
"duration": null,
"pipeline": "MBTA",
"properties": {
"HasNS": 1.0,
"HasMassGap": 0.3311659451659451,
"HasRemnant": 1.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "ca1d3c0a963283cab9e95507af063309",
"classification": {
"BBH": 0.0,
"BNS": 0.001068501,
"NSBH": 0.000334578,
"Terrestrial": 0.998596921
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-06-17T10:51:17Z",
"superevent_id": "S230617ab",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-17T10:51:18.823194Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-17T10:51:18.823240Z",
"modified": "2023-06-17T10:51:18.830790Z"
}
},
{
"id": 111,
"sequence_number": 2,
"sequence_type": "PRELIMINARY",
"message": {
"id": 312,
"topic": "igwn.gwalert",
"uuid": "20e34333-dbc2-498a-a5c2-5d3267875332",
"title": "S230617ab - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230617ab/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230617ab/view/"
},
"event": {
"far": 1.15938e-05,
"time": "2023-06-17T10:50:50.554Z",
"group": "CBC",
"search": "AllSky",
"area_50": 281.2158269985666,
"area_90": 1334.2670724744523,
"duration": null,
"pipeline": "MBTA",
"properties": {
"HasNS": 1.0,
"HasMassGap": 0.3311659451659451,
"HasRemnant": 1.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "ca1d3c0a963283cab9e95507af063309",
"classification": {
"BBH": 0.0,
"BNS": 0.001068501,
"NSBH": 0.000334578,
"Terrestrial": 0.998596921
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-06-17T10:55:51Z",
"superevent_id": "S230617ab",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-17T10:55:52.819021Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-17T10:55:52.819060Z",
"modified": "2023-06-17T10:55:52.824300Z"
}
}
],
"references": []
},
{
"event_id": "S230617aj",
"sequences": [
{
"id": 112,
"sequence_number": 1,
"sequence_type": "PRELIMINARY",
"message": {
"id": 313,
"topic": "igwn.gwalert",
"uuid": "f41a8948-095b-4b9b-9944-66bf4fbd4ef8",
"title": "S230617aj - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230617aj/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230617aj/view/"
},
"event": {
"far": 1.380620354918294e-05,
"time": "2023-06-17T12:23:09.568Z",
"group": "CBC",
"search": "AllSky",
"area_50": 1752.6549546122196,
"area_90": 6404.649806606416,
"duration": null,
"pipeline": "gstlal",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.04264138160689884,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "e5b1dbb8da80d6448d66074f0eb290ab",
"classification": {
"BBH": 0.10741545402387997,
"BNS": 1.4724735065309731e-15,
"NSBH": 2.1589643629864397e-11,
"Terrestrial": 0.892584545954529
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-06-17T12:23:31Z",
"superevent_id": "S230617aj",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-17T12:23:32.348602Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-17T12:23:32.348639Z",
"modified": "2023-06-17T12:23:32.354168Z"
}
},
{
"id": 113,
"sequence_number": 2,
"sequence_type": "PRELIMINARY",
"message": {
"id": 314,
"topic": "igwn.gwalert",
"uuid": "979e8139-eac1-424e-95b9-fe7ddeafc41e",
"title": "S230617aj - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230617aj/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230617aj/view/"
},
"event": {
"far": 1.380620354918294e-05,
"time": "2023-06-17T12:23:09.568Z",
"group": "CBC",
"search": "AllSky",
"area_50": 1752.6549546122196,
"area_90": 6404.649806606416,
"duration": null,
"pipeline": "gstlal",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.04264138160689884,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "e5b1dbb8da80d6448d66074f0eb290ab",
"classification": {
"BBH": 0.10741545402387997,
"BNS": 1.4724735065309731e-15,
"NSBH": 2.1589643629864397e-11,
"Terrestrial": 0.892584545954529
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-06-17T12:28:09Z",
"superevent_id": "S230617aj",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-17T12:28:10.597027Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-17T12:28:10.597073Z",
"modified": "2023-06-17T12:28:10.610307Z"
}
}
],
"references": []
},
{
"event_id": "S230617aq",
"sequences": [
{
"id": 114,
"sequence_number": 1,
"sequence_type": "PRELIMINARY",
"message": {
"id": 316,
"topic": "igwn.gwalert",
"uuid": "e034e83b-3fd6-4e27-9947-64d1e7620738",
"title": "S230617aq - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230617aq/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230617aq/view/"
},
"event": {
"far": 6.061732478302057e-06,
"time": "2023-06-17T16:17:51.129Z",
"group": "CBC",
"search": "AllSky",
"area_50": 437.9014593889264,
"area_90": 1587.733753328225,
"duration": null,
"pipeline": "pycbc",
"properties": {
"HasNS": 0.9243376600138051,
"HasMassGap": 0.053453679653679656,
"HasRemnant": 6.490087246793859e-05
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "6bed0c34871942fb08e67f35b78c7d76",
"classification": {
"BBH": 0.0018476849016268934,
"BNS": 0.0,
"NSBH": 0.004819276910944048,
"Terrestrial": 0.993333038187429
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-06-17T16:18:17Z",
"superevent_id": "S230617aq",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-17T16:18:18.463998Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-17T16:18:18.464022Z",
"modified": "2023-06-17T16:18:18.470986Z"
}
},
{
"id": 115,
"sequence_number": 2,
"sequence_type": "PRELIMINARY",
"message": {
"id": 317,
"topic": "igwn.gwalert",
"uuid": "eb898402-2762-4fd4-8aa0-17e40dfc5e15",
"title": "S230617aq - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230617aq/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230617aq/view/"
},
"event": {
"far": 6.061732478302057e-06,
"time": "2023-06-17T16:17:51.129Z",
"group": "CBC",
"search": "AllSky",
"area_50": 437.9014593889264,
"area_90": 1587.733753328225,
"duration": null,
"pipeline": "pycbc",
"properties": {
"HasNS": 0.9243376600138051,
"HasMassGap": 0.053453679653679656,
"HasRemnant": 6.490087246793859e-05
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "6bed0c34871942fb08e67f35b78c7d76",
"classification": {
"BBH": 0.0018476849016268934,
"BNS": 0.0,
"NSBH": 0.004819276910944048,
"Terrestrial": 0.993333038187429
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-06-17T16:22:52Z",
"superevent_id": "S230617aq",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-17T16:22:54.042222Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-17T16:22:54.042250Z",
"modified": "2023-06-17T16:22:54.047772Z"
}
}
],
"references": []
},
{
"event_id": "S230617ba",
"sequences": [
{
"id": 116,
"sequence_number": 1,
"sequence_type": "PRELIMINARY",
"message": {
"id": 319,
"topic": "igwn.gwalert",
"uuid": "3e6354ff-adb6-4dee-9bfd-8dcc3d28f891",
"title": "S230617ba - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230617ba/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230617ba/view/"
},
"event": {
"far": 5.853517905052286e-06,
"time": "2023-06-17T22:15:49.959Z",
"group": "CBC",
"search": "AllSky",
"area_50": 1909.6028662667077,
"area_90": 6609.437456037942,
"duration": null,
"pipeline": "spiir",
"properties": {
"HasNS": 0.26434153099912416,
"HasMassGap": 0.022389478337754197,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "2ac30776527783053e004b5950a1ad29",
"classification": {
"BBH": 0.11178376644699468,
"BNS": 0.0,
"NSBH": 0.01958735286155828,
"Terrestrial": 0.8686288806914471
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-06-17T22:16:13Z",
"superevent_id": "S230617ba",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-17T22:16:14.422764Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-17T22:16:14.422795Z",
"modified": "2023-06-17T22:16:14.428441Z"
}
},
{
"id": 118,
"sequence_number": 2,
"sequence_type": "PRELIMINARY",
"message": {
"id": 321,
"topic": "igwn.gwalert",
"uuid": "8c76b061-d685-4ff5-939c-526c11c79806",
"title": "S230617ba - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230617ba/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230617ba/view/"
},
"event": {
"far": 5.853517905052286e-06,
"time": "2023-06-17T22:15:49.959Z",
"group": "CBC",
"search": "AllSky",
"area_50": 1909.6028662667077,
"area_90": 6609.437456037942,
"duration": null,
"pipeline": "spiir",
"properties": {
"HasNS": 0.26434153099912416,
"HasMassGap": 0.022389478337754197,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "2ac30776527783053e004b5950a1ad29",
"classification": {
"BBH": 0.11178376644699468,
"BNS": 0.0,
"NSBH": 0.01958735286155828,
"Terrestrial": 0.8686288806914471
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-06-17T22:20:48Z",
"superevent_id": "S230617ba",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-17T22:20:50.107300Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-17T22:20:50.107329Z",
"modified": "2023-06-17T22:20:50.112550Z"
}
}
],
"references": []
},
{
"event_id": "S230617bc",
"sequences": [
{
"id": 117,
"sequence_number": 1,
"sequence_type": "PRELIMINARY",
"message": {
"id": 320,
"topic": "igwn.gwalert",
"uuid": "3df2f802-f506-48bf-9897-347426e84d65",
"title": "S230617bc - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230617bc/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230617bc/view/"
},
"event": {
"far": 1.757660470502742e-06,
"time": "2023-06-17T22:16:07.081Z",
"group": "CBC",
"search": "AllSky",
"area_50": 545.7506927985613,
"area_90": 2094.0376448018615,
"duration": null,
"pipeline": "spiir",
"properties": {
"HasNS": 1.0,
"HasMassGap": 0.022579365079365078,
"HasRemnant": 1.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "0a99d595ce67cb111a87015c9f28db3d",
"classification": {
"BBH": 0.0,
"BNS": 0.2683332837284786,
"NSBH": 0.0734203065051879,
"Terrestrial": 0.6582464097663335
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-06-17T22:16:38Z",
"superevent_id": "S230617bc",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-17T22:16:39.507738Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-17T22:16:39.507766Z",
"modified": "2023-06-17T22:16:39.512714Z"
}
},
{
"id": 119,
"sequence_number": 2,
"sequence_type": "PRELIMINARY",
"message": {
"id": 322,
"topic": "igwn.gwalert",
"uuid": "f71c4d21-c717-479f-b85e-bf4a3cb6b5bb",
"title": "S230617bc - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230617bc/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230617bc/view/"
},
"event": {
"far": 1.757660470502742e-06,
"time": "2023-06-17T22:16:07.081Z",
"group": "CBC",
"search": "AllSky",
"area_50": 545.7506927985613,
"area_90": 2094.0376448018615,
"duration": null,
"pipeline": "spiir",
"properties": {
"HasNS": 1.0,
"HasMassGap": 0.022579365079365078,
"HasRemnant": 1.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "0a99d595ce67cb111a87015c9f28db3d",
"classification": {
"BBH": 0.0,
"BNS": 0.2683332837284786,
"NSBH": 0.0734203065051879,
"Terrestrial": 0.6582464097663335
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-06-17T22:21:13Z",
"superevent_id": "S230617bc",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-17T22:21:14.196806Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-17T22:21:14.196834Z",
"modified": "2023-06-17T22:21:14.201876Z"
}
}
],
"references": []
},
{
"event_id": "S230618d",
"sequences": [
{
"id": 120,
"sequence_number": 1,
"sequence_type": "PRELIMINARY",
"message": {
"id": 324,
"topic": "igwn.gwalert",
"uuid": "e3684e53-b2ef-49e2-bbf9-57ca5a893aeb",
"title": "S230618d - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230618d/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230618d/view/"
},
"event": {
"far": 1.874154e-05,
"time": "2023-06-18T02:42:29.432Z",
"group": "CBC",
"search": "AllSky",
"area_50": 481.1775379701272,
"area_90": 1589.4123406186472,
"duration": null,
"pipeline": "MBTA",
"properties": {
"HasNS": 1.0,
"HasMassGap": 0.0,
"HasRemnant": 1.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "737c261a598c2c32b8e351a0611de631",
"classification": {
"BBH": 0.0,
"BNS": 0.000689026,
"NSBH": 2.2347e-05,
"Terrestrial": 0.999288627
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-06-18T02:42:57Z",
"superevent_id": "S230618d",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-18T02:42:59.389135Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-18T02:42:59.389169Z",
"modified": "2023-06-18T02:42:59.395253Z"
}
},
{
"id": 121,
"sequence_number": 2,
"sequence_type": "PRELIMINARY",
"message": {
"id": 325,
"topic": "igwn.gwalert",
"uuid": "b102ac11-2dfc-47d4-b559-a0bbec490462",
"title": "S230618d - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230618d/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230618d/view/"
},
"event": {
"far": 1.874154e-05,
"time": "2023-06-18T02:42:29.432Z",
"group": "CBC",
"search": "AllSky",
"area_50": 481.1775379701272,
"area_90": 1589.4123406186472,
"duration": null,
"pipeline": "MBTA",
"properties": {
"HasNS": 1.0,
"HasMassGap": 0.0,
"HasRemnant": 1.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "737c261a598c2c32b8e351a0611de631",
"classification": {
"BBH": 0.0,
"BNS": 0.000689026,
"NSBH": 2.2347e-05,
"Terrestrial": 0.999288627
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-06-18T02:47:32Z",
"superevent_id": "S230618d",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-18T02:47:33.931393Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-18T02:47:33.931420Z",
"modified": "2023-06-18T02:47:33.936546Z"
}
}
],
"references": [
{
"id": 340,
"topic": "gcn.circular",
"uuid": "921e89e0-1453-4ecf-8c81-4e56dbc5e735",
"title": "LIGO/Virgo S230618d: Global MASTER-Net observations report",
"submitter": "Hop gcn.circular",
"authors": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"data": {
"date": "23/06/18 07:07:11 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "33998",
"subject": "LIGO/Virgo S230618d: Global MASTER-Net observations report"
},
"message_text": "V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko,\nG.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin\n(Lomonosov Moscow State University, SAI, Physics Department),\n\nR. Podesta, C.Lopez, F. Podesta, C.Francile\n(Observatorio Astronomico Felix Aguilar OAFA),\n\nR. Rebolo, M. Serra\n(The Instituto de Astrofisica de Canarias),\n\nD. Buckley\n(South African Astronomical Observatory),\n\nO.A. Gres, N.M. Budnev\n(Irkutsk State University, API),\n\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez\n(INAOE, Guillermo Haro Astrophysics Observatory),\n\nA. Tlatov, D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nA. Gabovich, V.Yurkov\n(Blagoveschensk Educational State University)\n\n\nMASTER-OAFA robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Argentina (OAFA observatory of San Juan National University) started inspect of the LIGO/Virgo S230618d errorbox 65 sec after trigger time at 2023-06-18 02:43:34 UT, with upper limit up to 19.4 mag. The observations began at zenith distance = 65 deg. The sun altitude is -64.0 deg.\n\nThe galactic latitude b = -75 deg., longitude l = 290 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/ligo_1.php?id\u0012095\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 156 | 2023-06-18 02:43:34 | MASTER-OAFA | (12h 58m 33.14s , +18d 57m 04.9s) | C | 180 | 19.1 |\n 367 | 2023-06-18 02:47:06 | MASTER-OAFA | (13h 06m 58.32s , +18d 58m 03.3s) | C | 180 | 19.1 |\n 803 | 2023-06-18 02:54:21 | MASTER-OAFA | (13h 10m 08.61s , +22d 44m 03.9s) | C | 180 | 19.4 |\n 1015 | 2023-06-18 02:57:54 | MASTER-OAFA | (13h 07m 40.24s , +20d 49m 58.3s) | C | 180 | 19.1 |\n 1226 | 2023-06-18 03:01:25 | MASTER-OAFA | (12h 43m 26.12s , +15d 08m 54.7s) | C | 180 | 19.2 |\n 1698 | 2023-06-18 03:09:16 | MASTER-OAFA | (13h 01m 28.90s , +22d 44m 46.3s) | C | 180 | 19.1 |\n 1909 | 2023-06-18 03:12:48 | MASTER-OAFA | (12h 51m 41.58s , +15d 07m 53.6s) | C | 180 | 18.8 |\n 2121 | 2023-06-18 03:16:19 | MASTER-OAFA | (13h 10m 07.81s , +22d 44m 06.4s) | C | 180 | 19.4 |\n 2332 | 2023-06-18 03:19:50 | MASTER-OAFA | (13h 07m 39.93s , +20d 51m 19.6s) | C | 180 | 18.8 |\n 2713 | 2023-06-18 03:26:11 | MASTER-OAFA | (13h 16m 15.17s , +20d 51m 36.8s) | C | 180 | 18.7 |\n 3206 | 2023-06-18 03:34:24 | MASTER-OAFA | (13h 14m 52.07s , +15d 08m 42.1s) | C | 180 | 18.9 |\n 3417 | 2023-06-18 03:37:56 | MASTER-OAFA | (13h 23m 02.05s , +15d 07m 39.5s) | C | 180 | 18.9 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg3MDcyMDMzLCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.NnED5JBOc-kbUTkJB2Fmpp8YR3v2LgiWd5vZg6DAm-8\n\n",
"published": "2023-06-18T07:07:17.760095Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-18T07:07:17.760115Z",
"modified": "2023-06-18T07:07:17.764924Z",
"targets": []
}
]
},
{
"event_id": "S230618k",
"sequences": [
{
"id": 122,
"sequence_number": 1,
"sequence_type": "PRELIMINARY",
"message": {
"id": 330,
"topic": "igwn.gwalert",
"uuid": "10d7d418-e057-435a-8ff0-414b0437a0b2",
"title": "S230618k - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230618k/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230618k/view/"
},
"event": {
"far": 7.453410034941044e-06,
"time": "2023-06-18T04:57:47.820Z",
"group": "CBC",
"search": "AllSky",
"area_50": 1601.1624516516038,
"area_90": 6683.295296816523,
"duration": null,
"pipeline": "spiir",
"properties": {
"HasNS": 0.1340912485374929,
"HasMassGap": 0.5461715309844218,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "bc38831524e7abd579fa786869d43c95",
"classification": {
"BBH": 0.21602835834690795,
"BNS": 0.0,
"NSBH": 0.0,
"Terrestrial": 0.7839716416530921
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-06-18T04:58:10Z",
"superevent_id": "S230618k",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-18T04:58:11.687685Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-18T04:58:11.687725Z",
"modified": "2023-06-18T04:58:11.695092Z"
}
},
{
"id": 123,
"sequence_number": 2,
"sequence_type": "PRELIMINARY",
"message": {
"id": 331,
"topic": "igwn.gwalert",
"uuid": "8e0d4e00-14c9-400a-8395-59a4d5d6fe4f",
"title": "S230618k - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230618k/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230618k/view/"
},
"event": {
"far": 7.453410034941044e-06,
"time": "2023-06-18T04:57:47.820Z",
"group": "CBC",
"search": "AllSky",
"area_50": 1601.1624516516038,
"area_90": 6683.295296816523,
"duration": null,
"pipeline": "spiir",
"properties": {
"HasNS": 0.1340912485374929,
"HasMassGap": 0.5461715309844218,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "bc38831524e7abd579fa786869d43c95",
"classification": {
"BBH": 0.21602835834690795,
"BNS": 0.0,
"NSBH": 0.0,
"Terrestrial": 0.7839716416530921
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-06-18T05:02:46Z",
"superevent_id": "S230618k",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-18T05:02:48.323032Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-18T05:02:48.323061Z",
"modified": "2023-06-18T05:02:48.327678Z"
}
}
],
"references": [
{
"id": 341,
"topic": "gcn.circular",
"uuid": "17776b9f-4f4e-4823-8767-9c9b8a29f993",
"title": "LIGO/Virgo S230618k: Global MASTER-Net observations report",
"submitter": "Hop gcn.circular",
"authors": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"data": {
"date": "23/06/18 07:07:32 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "33999",
"subject": "LIGO/Virgo S230618k: Global MASTER-Net observations report"
},
"message_text": "V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko,\nG.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin\n(Lomonosov Moscow State University, SAI, Physics Department),\n\nR. Podesta, C.Lopez, F. Podesta, C.Francile\n(Observatorio Astronomico Felix Aguilar OAFA),\n\nR. Rebolo, M. Serra\n(The Instituto de Astrofisica de Canarias),\n\nD. Buckley\n(South African Astronomical Observatory),\n\nO.A. Gres, N.M. Budnev\n(Irkutsk State University, API),\n\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez\n(INAOE, Guillermo Haro Astrophysics Observatory),\n\nA. Tlatov, D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nA. Gabovich, V.Yurkov\n(Blagoveschensk Educational State University)\n\n\nMASTER-OAFA robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Argentina (OAFA observatory of San Juan National University) started inspect of the LIGO/Virgo S230618k errorbox 155 sec after notice time and 201 sec after trigger time at 2023-06-18 05:01:08 UT, with upper limit up to 17.7 mag. The observations began at zenith distance = 80 deg. The sun altitude is -80.5 deg.\n\nThe galactic latitude b = 66 deg., longitude l = 151 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/ligo_1.php?id\u0012099\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 272 | 2023-06-18 05:00:48 | MASTER- | (13h 05m 47.06s , +03d 01m 21.0s) | C | 180 | 17.5 |\n 292 | 2023-06-18 05:01:08 | MASTER-OAFA | (13h 04m 39.22s , +03d 56m 00.1s) | C | 180 | 17.7 |\n 611 | 2023-06-18 05:06:27 | MASTER- | (13h 05m 45.21s , +03d 02m 35.5s) | C | 180 | 17.5 |\n 685 | 2023-06-18 05:07:41 | MASTER-OAFA | (13h 04m 38.75s , +03d 56m 55.5s) | C | 180 | 17.4 |\n 896 | 2023-06-18 05:11:13 | MASTER-OAFA | (13h 04m 33.53s , +03d 55m 56.0s) | C | 180 | 17.3 |\n 950 | 2023-06-18 05:12:07 | MASTER- | (13h 05m 45.48s , +03d 00m 24.9s) | C | 180 | 17.4 |\n 1144 | 2023-06-18 05:15:21 | MASTER-OAFA | (13h 04m 39.29s , +03d 55m 56.5s) | C | 180 | 17.0 |\n 1292 | 2023-06-18 05:17:48 | MASTER- | (13h 05m 48.00s , +03d 01m 29.2s) | C | 180 | 17.5 |\n 1356 | 2023-06-18 05:18:52 | MASTER-OAFA | (13h 04m 32.18s , +03d 54m 57.5s) | C | 180 | 16.9 |\n 1632 | 2023-06-18 05:23:29 | MASTER- | (13h 05m 42.33s , +03d 00m 21.8s) | C | 180 | 17.4 |\n 1928 | 2023-06-18 05:28:25 | MASTER-OAFA | (13h 04m 30.92s , +03d 55m 01.5s) | C | 180 | 16.5 |\n 1970 | 2023-06-18 05:29:07 | MASTER- | (13h 05m 43.64s , +03d 00m 56.9s) | C | 180 | 17.5 |\n 2310 | 2023-06-18 05:34:47 | MASTER- | (13h 05m 50.20s , +02d 59m 33.6s) | C | 180 | 17.5 |\n 2650 | 2023-06-18 05:40:26 | MASTER- | (13h 05m 43.38s , +02d 58m 07.1s) | C | 180 | 17.5 |\n 2989 | 2023-06-18 05:46:06 | MASTER- | (13h 05m 51.08s , +02d 57m 49.5s) | C | 180 | 17.5 |\n 3330 | 2023-06-18 05:51:47 | MASTER- | (13h 05m 48.14s , +02d 59m 05.5s) | C | 180 | 17.5 |\n 3670 | 2023-06-18 05:57:27 | MASTER- | (13h 05m 48.59s , +02d 57m 10.3s) | C | 180 | 17.5 |\n 4011 | 2023-06-18 06:03:08 | MASTER- | (13h 05m 51.22s , +02d 58m 24.1s) | C | 180 | 17.5 |\n 4351 | 2023-06-18 06:08:48 | MASTER- | (13h 05m 45.56s , +02d 57m 00.2s) | C | 180 | 17.5 |\n 4692 | 2023-06-18 06:14:29 | MASTER- | (13h 05m 46.01s , +02d 57m 32.2s) | C | 180 | 17.5 |\n 5032 | 2023-06-18 06:20:09 | MASTER- | (13h 05m 52.68s , +02d 56m 09.9s) | C | 180 | 17.5 |\n 5373 | 2023-06-18 06:25:50 | MASTER- | (13h 05m 47.05s , +02d 54m 44.4s) | C | 180 | 17.5 |\n 5715 | 2023-06-18 06:31:31 | MASTER- | (13h 05m 53.66s , +02d 54m 48.1s) | C | 180 | 17.5 |\n 6055 | 2023-06-18 06:37:11 | MASTER- | (13h 05m 52.01s , +02d 55m 24.4s) | C | 180 | 17.5 |\n 6396 | 2023-06-18 06:42:52 | MASTER- | (13h 05m 52.52s , +02d 53m 41.9s) | C | 180 | 17.5 |\n 6736 | 2023-06-18 06:48:32 | MASTER- | (13h 05m 55.13s , +02d 54m 46.8s) | C | 180 | 17.5 |\n 7076 | 2023-06-18 06:54:13 | MASTER- | (13h 05m 49.41s , +02d 53m 36.3s) | C | 180 | 17.4 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg3MDcyMDUzLCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.j9PX5rjDqteLohQOx6RJP68e2rUW7FsTQDPHns5e_Ho\n\n",
"published": "2023-06-18T07:07:35.809144Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-18T07:07:35.809181Z",
"modified": "2023-06-18T07:07:35.814229Z",
"targets": []
}
]
},
{
"event_id": "S230617a",
"sequences": [],
"references": [
{
"id": 338,
"topic": "gcn.circular",
"uuid": "f1dd8750-e571-4ba4-9374-33150f2c04b7",
"title": "LIGO/Virgo S230617aq: Global MASTER-Net observations report",
"submitter": "Hop gcn.circular",
"authors": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"data": {
"date": "23/06/18 07:06:07 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "33996",
"subject": "LIGO/Virgo S230617aq: Global MASTER-Net observations report"
},
"message_text": "V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko,\nG.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin\n(Lomonosov Moscow State University, SAI, Physics Department),\n\nR. Podesta, C.Lopez, F. Podesta, C.Francile\n(Observatorio Astronomico Felix Aguilar OAFA),\n\nR. Rebolo, M. Serra\n(The Instituto de Astrofisica de Canarias),\n\nD. Buckley\n(South African Astronomical Observatory),\n\nO.A. Gres, N.M. Budnev\n(Irkutsk State University, API),\n\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez\n(INAOE, Guillermo Haro Astrophysics Observatory),\n\nA. Tlatov, D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nA. Gabovich, V.Yurkov\n(Blagoveschensk Educational State University)\n\n\nMASTER-OAFA robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Argentina (OAFA observatory of San Juan National University) started inspect of the LIGO/Virgo S230617aq errorbox 32815 sec after notice time and 32883 sec after trigger time at 2023-06-18 01:25:54 UT, with upper limit up to 19.5 mag. The observations began at zenith distance = 48 deg. The sun altitude is -47.5 deg.\n\nThe galactic latitude b = -15 deg., longitude l = 144 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/ligo_1.php?id\u0012082\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 32973 | 2023-06-18 01:25:54 | MASTER-OAFA | (13h 03m 14.12s , +11d 22m 47.0s) | C | 180 | 19.3 |\n 33396 | 2023-06-18 01:32:57 | MASTER-OAFA | (13h 11m 25.83s , +11d 22m 28.9s) | C | 180 | 19.4 |\n 34168 | 2023-06-18 01:45:49 | MASTER-OAFA | (13h 03m 10.62s , +11d 20m 48.7s) | C | 180 | 19.4 |\n 34558 | 2023-06-18 01:52:19 | MASTER-OAFA | (13h 11m 22.31s , +11d 22m 24.7s) | C | 180 | 19.5 |\n 35192 | 2023-06-18 02:02:53 | MASTER-OAFA | (12h 59m 16.56s , +15d 09m 34.5s) | C | 180 | 19.5 |\n 35403 | 2023-06-18 02:06:24 | MASTER-OAFA | (13h 07m 26.61s , +15d 08m 32.8s) | C | 180 | 19.5 |\n 36037 | 2023-06-18 02:16:58 | MASTER-OAFA | (12h 59m 13.24s , +15d 08m 45.1s) | C | 180 | 19.3 |\n 36248 | 2023-06-18 02:20:29 | MASTER-OAFA | (13h 07m 33.35s , +15d 10m 00.0s) | C | 180 | 19.4 |\n 36459 | 2023-06-18 02:24:00 | MASTER-OAFA | (13h 06m 21.26s , +17d 04m 21.2s) | C | 180 | 19.4 |\n 36670 | 2023-06-18 02:27:31 | MASTER-OAFA | (13h 14m 47.91s , +17d 03m 19.4s) | C | 180 | 19.1 |\n 36881 | 2023-06-18 02:31:02 | MASTER-OAFA | (12h 58m 38.67s , +18d 56m 27.2s) | C | 180 | 19.1 |\n 37092 | 2023-06-18 02:34:33 | MASTER-OAFA | (13h 07m 01.73s , +18d 58m 05.5s) | C | 180 | 19.1 |\n 37303 | 2023-06-18 02:38:04 | MASTER-OAFA | (13h 06m 24.35s , +17d 02m 30.9s) | C | 180 | 19.2 |\n 37634 | 2023-06-18 02:43:34 | MASTER-OAFA | (12h 58m 33.14s , +18d 57m 04.9s) | C | 180 | 19.1 |\n 37845 | 2023-06-18 02:47:06 | MASTER-OAFA | (13h 06m 58.32s , +18d 58m 03.3s) | C | 180 | 19.1 |\n 38281 | 2023-06-18 02:54:21 | MASTER-OAFA | (13h 10m 08.61s , +22d 44m 03.9s) | C | 180 | 19.4 |\n 38493 | 2023-06-18 02:57:54 | MASTER-OAFA | (13h 07m 40.24s , +20d 49m 58.3s) | C | 180 | 19.1 |\n 39176 | 2023-06-18 03:09:16 | MASTER-OAFA | (13h 01m 28.90s , +22d 44m 46.3s) | C | 180 | 19.1 |\n 39599 | 2023-06-18 03:16:19 | MASTER-OAFA | (13h 10m 07.81s , +22d 44m 06.4s) | C | 180 | 19.4 |\n 39810 | 2023-06-18 03:19:50 | MASTER-OAFA | (13h 07m 39.93s , +20d 51m 19.6s) | C | 180 | 18.8 |\n 40191 | 2023-06-18 03:26:11 | MASTER-OAFA | (13h 16m 15.17s , +20d 51m 36.8s) | C | 180 | 18.7 |\n 40684 | 2023-06-18 03:34:24 | MASTER-OAFA | (13h 14m 52.07s , +15d 08m 42.1s) | C | 180 | 18.9 |\n 40895 | 2023-06-18 03:37:56 | MASTER-OAFA | (13h 23m 02.05s , +15d 07m 39.5s) | C | 180 | 18.9 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg3MDcxOTczLCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.esh1lw0tYS4ZrsPG5nuUil-FrhwIag-GwKFwCcQjaLQ\n\n",
"published": "2023-06-18T07:06:18.618261Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-18T07:06:18.618295Z",
"modified": "2023-06-18T07:06:18.624139Z",
"targets": []
},
{
"id": 337,
"topic": "gcn.circular",
"uuid": "c7e71b69-502d-4d4d-94e4-d1bb6e7cc10b",
"title": "LIGO/Virgo S230617ab: Global MASTER-Net observations report",
"submitter": "Hop gcn.circular",
"authors": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"data": {
"date": "23/06/18 07:05:59 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "33995",
"subject": "LIGO/Virgo S230617ab: Global MASTER-Net observations report"
},
"message_text": "V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko,\nG.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin\n(Lomonosov Moscow State University, SAI, Physics Department),\n\nR. Podesta, C.Lopez, F. Podesta, C.Francile\n(Observatorio Astronomico Felix Aguilar OAFA),\n\nR. Rebolo, M. Serra\n(The Instituto de Astrofisica de Canarias),\n\nD. Buckley\n(South African Astronomical Observatory),\n\nO.A. Gres, N.M. Budnev\n(Irkutsk State University, API),\n\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez\n(INAOE, Guillermo Haro Astrophysics Observatory),\n\nA. Tlatov, D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nA. Gabovich, V.Yurkov\n(Blagoveschensk Educational State University)\n\n\nMASTER-OAFA robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Argentina (OAFA observatory of San Juan National University) started inspect of the LIGO/Virgo S230617ab errorbox 42792 sec after notice time and 42885 sec after trigger time at 2023-06-17 22:45:35 UT, with upper limit up to 18.8 mag. Observations started at twilight. The observations began at zenith distance = 66 deg. The sun altitude is -13.8 deg.\n\nThe galactic latitude b = 26 deg., longitude l = 73 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/ligo_1.php?id\u0012074\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 103 | 2023-06-17 10:52:23 | MASTER- | (18h 05m 49.44s , +45d 11m 01.8s) | C | 20 | 17.9 |\n 143 | 2023-06-17 10:53:03 | MASTER- | (18h 05m 46.44s , +45d 12m 38.1s) | C | 20 | 17.7 |\n 188 | 2023-06-17 10:53:43 | MASTER- | (18h 05m 46.90s , +45d 11m 05.5s) | C | 30 | 16.4 |\n 243 | 2023-06-17 10:54:32 | MASTER- | (18h 05m 49.69s , +45d 12m 07.4s) | C | 40 | 18.6 |\n 308 | 2023-06-17 10:55:32 | MASTER- | (18h 05m 44.00s , +45d 11m 24.5s) | C | 50 | 18.7 |\n 388 | 2023-06-17 10:56:42 | MASTER- | (18h 05m 43.98s , +45d 12m 16.4s) | C | 70 | 18.6 |\n 488 | 2023-06-17 10:58:13 | MASTER- | (18h 05m 49.76s , +45d 11m 09.7s) | C | 90 | 18.0 |\n 608 | 2023-06-17 11:00:02 | MASTER- | (18h 05m 43.17s , +45d 09m 54.8s) | C | 110 | 18.3 |\n 1339 | 2023-06-17 11:11:39 | MASTER- | (14h 37m 06.90s , +74d 41m 47.3s) | C | 180 | 17.4 |\n 1540 | 2023-06-17 11:14:59 | MASTER- | (15h 08m 10.68s , +74d 45m 01.2s) | C | 180 | 16.3 |\n 1740 | 2023-06-17 11:18:20 | MASTER- | (13h 38m 47.20s , +82d 15m 47.4s) | C | 180 | 15.7 |\n 1941 | 2023-06-17 11:21:41 | MASTER- | (14h 41m 26.44s , +82d 18m 27.7s) | C | 180 | 17.0 |\n 2142 | 2023-06-17 11:25:01 | MASTER- | (14h 37m 10.66s , +74d 42m 43.7s) | C | 180 | 14.8 |\n 42976 | 2023-06-17 22:45:35 | MASTER-OAFA | (09h 47m 30.89s , +27d 23m 52.5s) | C | 180 | 17.9 |\n 43609 | 2023-06-17 22:56:08 | MASTER-OAFA | (09h 48m 58.77s , +29d 16m 00.9s) | C | 180 | 18.5 |\n 43821 | 2023-06-17 22:59:40 | MASTER-OAFA | (09h 58m 18.13s , +29d 16m 46.7s) | C | 180 | 18.8 |\n 44410 | 2023-06-17 23:09:30 | MASTER-OAFA | (09h 48m 22.99s , +30d 20m 02.2s) | C | 180 | 18.3 |\n 44621 | 2023-06-17 23:13:01 | MASTER-OAFA | (09h 57m 36.61s , +30d 21m 20.4s) | C | 180 | 18.7 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg3MDcxOTY0LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.h6bGFNAb2k4DaM2_Mm8lPkHxsjgNKaG1Rum3PuMhKNM\n\n",
"published": "2023-06-18T07:06:10.351184Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-18T07:06:10.351220Z",
"modified": "2023-06-18T07:06:10.358579Z",
"targets": []
},
{
"id": 335,
"topic": "gcn.circular",
"uuid": "e1204b41-594e-4d1b-b53d-31d8d9b1292c",
"title": "LIGO/Virgo S230617aj: Global MASTER-Net observations report",
"submitter": "Hop gcn.circular",
"authors": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"data": {
"date": "23/06/18 06:37:40 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "33993",
"subject": "LIGO/Virgo S230617aj: Global MASTER-Net observations report"
},
"message_text": "V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko,\nG.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin\n(Lomonosov Moscow State University, SAI, Physics Department),\n\nR. Podesta, C.Lopez, F. Podesta, C.Francile\n(Observatorio Astronomico Felix Aguilar OAFA),\n\nR. Rebolo, M. Serra\n(The Instituto de Astrofisica de Canarias),\n\nD. Buckley\n(South African Astronomical Observatory),\n\nO.A. Gres, N.M. Budnev\n(Irkutsk State University, API),\n\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez\n(INAOE, Guillermo Haro Astrophysics Observatory),\n\nA. Tlatov, D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nA. Gabovich, V.Yurkov\n(Blagoveschensk Educational State University)\n\n\nMASTER-Tunka robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Russia (Applied Physics Institute, Irkutsk State University) started inspect of the LIGO/Virgo S230617aj errorbox 12776 sec after notice time and 12827 sec after trigger time at 2023-06-17 15:56:56 UT, with upper limit up to 14.6 mag. Observations started at twilight. The observations began at zenith distance = 64 deg. The sun altitude is -14.0 deg.\n\nThe galactic latitude b = 60 deg., longitude l = 316 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/ligo_1.php?id\u0012076\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 12917 | 2023-06-17 15:56:56 | MASTER-Tunka | (12h 22m 10.58s , +11d 36m 39.9s) | C | 180 | 14.6 |\n 18909 | 2023-06-17 17:36:48 | MASTER-Tunka | (11h 04m 56.55s , +39d 59m 34.2s) | C | 180 | 14.4 |\n 19507 | 2023-06-17 17:46:46 | MASTER-Tunka | (11h 44m 29.74s , +32d 26m 57.5s) | C | 180 | 14.4 |\n 20105 | 2023-06-17 17:56:44 | MASTER-Tunka | (10h 41m 37.50s , +43d 45m 39.7s) | C | 180 | 14.5 |\n 21698 | 2023-06-17 18:23:16 | MASTER-Tunka | (11h 03m 02.49s , +41d 52m 32.0s) | C | 180 | 14.0 |\n 53450 | 2023-06-18 03:12:29 | MASTER- | (11h 08m 29.72s , +42d 44m 32.7s) | C | 180 | 12.5 |\n 54332 | 2023-06-18 03:27:11 | MASTER- | (10h 57m 37.91s , +42d 43m 58.0s) | C | 180 | 17.9 |\n 54532 | 2023-06-18 03:30:31 | MASTER- | (11h 08m 28.59s , +42d 44m 08.5s) | C | 180 | 17.9 |\n 55890 | 2023-06-18 03:54:34 | MASTER- | (13h 05m 46.28s , +03d 07m 00.1s) | C | 10 | 15.6 |\n 55925 | 2023-06-18 03:55:03 | MASTER- | (13h 05m 39.10s , +03d 06m 26.2s) | C | 20 | 16.1 |\n 55970 | 2023-06-18 03:55:43 | MASTER- | (13h 05m 39.18s , +03d 07m 22.9s) | C | 30 | 16.5 |\n 56025 | 2023-06-18 03:56:33 | MASTER- | (13h 05m 46.50s , +03d 06m 21.0s) | C | 40 | 16.6 |\n 56090 | 2023-06-18 03:57:33 | MASTER- | (13h 05m 39.38s , +03d 05m 15.2s) | C | 50 | 16.7 |\n 56165 | 2023-06-18 03:58:43 | MASTER- | (13h 05m 45.56s , +03d 05m 28.0s) | C | 60 | 17.1 |\n 56255 | 2023-06-18 04:00:03 | MASTER- | (13h 05m 43.45s , +03d 06m 46.1s) | C | 80 | 17.1 |\n 56364 | 2023-06-18 04:01:43 | MASTER- | (13h 05m 43.55s , +03d 05m 19.1s) | C | 100 | 17.1 |\n 56495 | 2023-06-18 04:03:43 | MASTER- | (13h 05m 45.80s , +03d 06m 22.1s) | C | 120 | 17.1 |\n 56649 | 2023-06-18 04:06:03 | MASTER- | (13h 05m 39.76s , +03d 05m 40.1s) | C | 150 | 17.2 |\n 56834 | 2023-06-18 04:08:53 | MASTER- | (13h 05m 41.02s , +03d 06m 28.9s) | C | 180 | 17.5 |\n 57034 | 2023-06-18 04:12:12 | MASTER- | (13h 05m 46.13s , +03d 05m 19.2s) | C | 180 | 17.1 |\n 57234 | 2023-06-18 04:15:32 | MASTER- | (13h 05m 41.10s , +03d 04m 04.8s) | C | 180 | 17.1 |\n 57434 | 2023-06-18 04:18:52 | MASTER- | (13h 05m 47.15s , +03d 04m 20.9s) | C | 180 | 17.1 |\n 57633 | 2023-06-18 04:22:12 | MASTER- | (13h 05m 43.91s , +03d 05m 17.5s) | C | 180 | 17.1 |\n 57908 | 2023-06-18 04:26:47 | MASTER- | (13h 05m 44.00s , +03d 03m 28.8s) | C | 180 | 17.0 |\n 58249 | 2023-06-18 04:32:28 | MASTER- | (13h 05m 46.27s , +03d 04m 44.6s) | C | 180 | 17.5 |\n 58590 | 2023-06-18 04:38:08 | MASTER- | (13h 05m 41.53s , +03d 03m 36.1s) | C | 180 | 17.4 |\n 58930 | 2023-06-18 04:43:48 | MASTER- | (13h 05m 41.51s , +03d 04m 11.9s) | C | 180 | 17.4 |\n 59270 | 2023-06-18 04:49:29 | MASTER- | (13h 05m 47.82s , +03d 02m 50.2s) | C | 180 | 17.4 |\n 59610 | 2023-06-18 04:55:09 | MASTER- | (13h 05m 41.79s , +03d 01m 24.4s) | C | 180 | 17.5 |\n 59950 | 2023-06-18 05:00:48 | MASTER- | (13h 05m 47.06s , +03d 01m 21.0s) | C | 180 | 17.5 |\n 60289 | 2023-06-18 05:06:27 | MASTER- | (13h 05m 45.21s , +03d 02m 35.5s) | C | 180 | 17.5 |\n 60628 | 2023-06-18 05:12:07 | MASTER- | (13h 05m 45.48s , +03d 00m 24.9s) | C | 180 | 17.4 |\n 60970 | 2023-06-18 05:17:48 | MASTER- | (13h 05m 48.00s , +03d 01m 29.2s) | C | 180 | 17.5 |\n 61310 | 2023-06-18 05:23:29 | MASTER- | (13h 05m 42.33s , +03d 00m 21.8s) | C | 180 | 17.4 |\n 61648 | 2023-06-18 05:29:07 | MASTER- | (13h 05m 43.64s , +03d 00m 56.9s) | C | 180 | 17.5 |\n 61988 | 2023-06-18 05:34:47 | MASTER- | (13h 05m 50.20s , +02d 59m 33.6s) | C | 180 | 17.5 |\n 62328 | 2023-06-18 05:40:26 | MASTER- | (13h 05m 43.38s , +02d 58m 07.1s) | C | 180 | 17.5 |\n 62667 | 2023-06-18 05:46:06 | MASTER- | (13h 05m 51.08s , +02d 57m 49.5s) | C | 180 | 17.5 |\n 63008 | 2023-06-18 05:51:47 | MASTER- | (13h 05m 48.14s , +02d 59m 05.5s) | C | 180 | 17.5 |\n 63348 | 2023-06-18 05:57:27 | MASTER- | (13h 05m 48.59s , +02d 57m 10.3s) | C | 180 | 17.5 |\n 63689 | 2023-06-18 06:03:08 | MASTER- | (13h 05m 51.22s , +02d 58m 24.1s) | C | 180 | 17.5 |\n 64029 | 2023-06-18 06:08:48 | MASTER- | (13h 05m 45.56s , +02d 57m 00.2s) | C | 180 | 17.5 |\n 64370 | 2023-06-18 06:14:29 | MASTER- | (13h 05m 46.01s , +02d 57m 32.2s) | C | 180 | 17.5 |\n 64710 | 2023-06-18 06:20:09 | MASTER- | (13h 05m 52.68s , +02d 56m 09.9s) | C | 180 | 17.5 |\n 65051 | 2023-06-18 06:25:50 | MASTER- | (13h 05m 47.05s , +02d 54m 44.4s) | C | 180 | 17.5 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg3MDcwMjY1LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.Tb1Hsh-_UyDAB1WP5lSYwWRl5auIK-hQqiiPacAUmeo\n\n",
"published": "2023-06-18T06:37:50.772945Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-18T06:37:50.772967Z",
"modified": "2023-06-18T06:37:50.779959Z",
"targets": []
}
]
},
{
"event_id": "S230617b",
"sequences": [],
"references": [
{
"id": 342,
"topic": "gcn.circular",
"uuid": "b84dcc59-29a5-47fb-bb9e-a7d66bd2d624",
"title": "LIGO/Virgo S230617ba: Global MASTER-Net observations report",
"submitter": "Hop gcn.circular",
"authors": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"data": {
"date": "23/06/18 08:55:45 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "34000",
"subject": "LIGO/Virgo S230617ba: Global MASTER-Net observations report"
},
"message_text": "V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko,\nG.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin\n(Lomonosov Moscow State University, SAI, Physics Department),\n\nR. Podesta, C.Lopez, F. Podesta, C.Francile\n(Observatorio Astronomico Felix Aguilar OAFA),\n\nR. Rebolo, M. Serra\n(The Instituto de Astrofisica de Canarias),\n\nD. Buckley\n(South African Astronomical Observatory),\n\nO.A. Gres, N.M. Budnev\n(Irkutsk State University, API),\n\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez\n(INAOE, Guillermo Haro Astrophysics Observatory),\n\nA. Tlatov, D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nA. Gabovich, V.Yurkov\n(Blagoveschensk Educational State University)\n\n\nMASTER-OAFA robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Argentina (OAFA observatory of San Juan National University) started inspect of the LIGO/Virgo S230617ba errorbox 35322 sec after notice time and 35382 sec after trigger time at 2023-06-18 08:05:31 UT, with upper limit up to 19.1 mag. The observations began at zenith distance = 57 deg. The sun altitude is -43.1 deg.\n\nThe galactic latitude b = -54 deg., longitude l = 19 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/ligo_1.php?id\u0012084\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 35472 | 2023-06-18 08:05:31 | MASTER-OAFA | (02h 05m 23.25s , -46d 54m 49.1s) | C | 180 | 19.1 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg3MDc4NTUwLCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.YkKPGnPB-4J6souqkYxKuY98Bp-uzTzbvSJUv67Srp0\n\n",
"published": "2023-06-18T08:55:55.517066Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-18T08:55:55.517102Z",
"modified": "2023-06-18T08:55:55.524489Z",
"targets": []
},
{
"id": 339,
"topic": "gcn.circular",
"uuid": "60f28fdd-0153-4b5b-80aa-0a41b687f1dd",
"title": "LIGO/Virgo S230617bc: Global MASTER-Net observations report",
"submitter": "Hop gcn.circular",
"authors": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"data": {
"date": "23/06/18 07:06:21 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "33997",
"subject": "LIGO/Virgo S230617bc: Global MASTER-Net observations report"
},
"message_text": "V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko,\nG.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin\n(Lomonosov Moscow State University, SAI, Physics Department),\n\nR. Podesta, C.Lopez, F. Podesta, C.Francile\n(Observatorio Astronomico Felix Aguilar OAFA),\n\nR. Rebolo, M. Serra\n(The Instituto de Astrofisica de Canarias),\n\nD. Buckley\n(South African Astronomical Observatory),\n\nO.A. Gres, N.M. Budnev\n(Irkutsk State University, API),\n\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez\n(INAOE, Guillermo Haro Astrophysics Observatory),\n\nA. Tlatov, D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nA. Gabovich, V.Yurkov\n(Blagoveschensk Educational State University)\n\n\nMASTER-OAFA robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Argentina (OAFA observatory of San Juan National University) started inspect of the LIGO/Virgo S230617bc errorbox 1260 sec after notice time and 1344 sec after trigger time at 2023-06-17 22:38:31 UT, with upper limit up to 18.8 mag. Observations started at twilight. The observations began at zenith distance = 67 deg. The sun altitude is -12.4 deg.\n\nThe galactic latitude b = 69 deg., longitude l = 128 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/ligo_1.php?id\u0012086\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 1434 | 2023-06-17 22:38:31 | MASTER-OAFA | (09h 40m 44.63s , +29d 17m 30.6s) | C | 180 | 16.5 |\n 1647 | 2023-06-17 22:42:04 | MASTER-OAFA | (09h 38m 24.12s , +27d 22m 04.5s) | C | 180 | 17.3 |\n 1859 | 2023-06-17 22:45:35 | MASTER-OAFA | (09h 47m 30.89s , +27d 23m 52.5s) | C | 180 | 17.9 |\n 2070 | 2023-06-17 22:49:06 | MASTER-OAFA | (09h 31m 28.86s , +29d 16m 32.7s) | C | 180 | 17.8 |\n 2281 | 2023-06-17 22:52:38 | MASTER-OAFA | (09h 40m 42.07s , +29d 17m 47.3s) | C | 180 | 18.1 |\n 2492 | 2023-06-17 22:56:08 | MASTER-OAFA | (09h 48m 58.77s , +29d 16m 00.9s) | C | 180 | 18.5 |\n 2704 | 2023-06-17 22:59:40 | MASTER-OAFA | (09h 58m 18.13s , +29d 16m 46.7s) | C | 180 | 18.8 |\n 2935 | 2023-06-17 23:03:32 | MASTER-OAFA | (07h 32m 42.28s , -15d 20m 46.5s) | C | 180 | 17.6 |\n 3293 | 2023-06-17 23:09:30 | MASTER-OAFA | (09h 48m 22.99s , +30d 20m 02.2s) | C | 180 | 18.3 |\n 3504 | 2023-06-17 23:13:01 | MASTER-OAFA | (09h 57m 36.61s , +30d 21m 20.4s) | C | 180 | 18.7 |\n 3885 | 2023-06-17 23:19:21 | MASTER-OAFA | (07h 40m 56.59s , -15d 21m 01.3s) | C | 180 | 18.3 |\n 4096 | 2023-06-17 23:22:53 | MASTER-OAFA | (07h 42m 28.65s , -19d 07m 22.9s) | C | 180 | 18.4 |\n 4307 | 2023-06-17 23:26:24 | MASTER-OAFA | (07h 50m 58.57s , -19d 08m 19.7s) | C | 180 | 18.4 |\n 4778 | 2023-06-17 23:34:15 | MASTER-OAFA | (07h 59m 55.45s , -13d 26m 26.6s) | C | 180 | 18.4 |\n 5154 | 2023-06-17 23:40:30 | MASTER-OAFA | (07h 42m 27.95s , -19d 07m 24.1s) | C | 180 | 18.2 |\n 5365 | 2023-06-17 23:44:02 | MASTER-OAFA | (08h 08m 12.21s , -13d 25m 58.3s) | C | 180 | 18.6 |\n 5682 | 2023-06-17 23:49:19 | MASTER-OAFA | (08h 08m 30.61s , -09d 37m 20.7s) | C | 180 | 18.6 |\n 6164 | 2023-06-17 23:57:20 | MASTER-OAFA | (08h 16m 43.79s , -09d 37m 00.7s) | C | 180 | 18.5 |\n 6375 | 2023-06-18 00:00:52 | MASTER-OAFA | (07h 59m 53.43s , -13d 26m 39.4s) | C | 180 | 18.3 |\n 6586 | 2023-06-18 00:04:23 | MASTER-OAFA | (08h 08m 14.68s , -13d 25m 58.9s) | C | 180 | 18.4 |\n 17872 | 2023-06-18 03:12:29 | MASTER- | (11h 08m 29.72s , +42d 44m 32.7s) | C | 180 | 12.5 |\n 18214 | 2023-06-18 03:18:11 | MASTER- | (10h 20m 42.13s , +38d 53m 10.8s) | C | 180 | 12.4 |\n 18554 | 2023-06-18 03:23:50 | MASTER- | (10h 31m 00.99s , +38d 52m 32.6s) | C | 180 | 14.8 |\n 18754 | 2023-06-18 03:27:11 | MASTER- | (10h 57m 37.91s , +42d 43m 58.0s) | C | 180 | 17.9 |\n 18954 | 2023-06-18 03:30:31 | MASTER- | (11h 08m 28.59s , +42d 44m 08.5s) | C | 180 | 17.9 |\n 19293 | 2023-06-18 03:36:10 | MASTER- | (10h 20m 38.75s , +38d 52m 00.3s) | C | 180 | 17.0 |\n 19635 | 2023-06-18 03:41:51 | MASTER- | (10h 31m 05.15s , +38d 51m 42.0s) | C | 180 | 15.5 |\n 19975 | 2023-06-18 03:47:32 | MASTER- | (09h 38m 33.30s , +27d 21m 32.4s) | C | 180 | 17.9 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg3MDcxOTgzLCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.dzuk2SCwAsJN07t-qOhMiW9isNr6ghMlUH5hQyyCJMY\n\n",
"published": "2023-06-18T07:06:27.661480Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-18T07:06:27.661501Z",
"modified": "2023-06-18T07:06:27.666487Z",
"targets": []
}
]
},
{
"event_id": "S230618r",
"sequences": [
{
"id": 124,
"sequence_number": 1,
"sequence_type": "PRELIMINARY",
"message": {
"id": 343,
"topic": "igwn.gwalert",
"uuid": "774f99e3-6286-4226-93ed-070d54c3bc14",
"title": "S230618r - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230618r/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230618r/view/"
},
"event": {
"far": 1.55478e-05,
"time": "2023-06-18T09:07:27.898Z",
"group": "CBC",
"search": "AllSky",
"area_50": 534.6300519995133,
"area_90": 2063.8230735742595,
"duration": null,
"pipeline": "MBTA",
"properties": {
"HasNS": 0.0002100074768664958,
"HasMassGap": 0.18430250914662683,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "78afbdafa672791a96968502644185c4",
"classification": {
"BBH": 0.032511734,
"BNS": 0.0,
"NSBH": 2.071e-06,
"Terrestrial": 0.967486195
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-06-18T09:07:53Z",
"superevent_id": "S230618r",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-18T09:07:54.164281Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-18T09:07:54.164309Z",
"modified": "2023-06-18T09:07:54.169514Z"
}
},
{
"id": 125,
"sequence_number": 2,
"sequence_type": "PRELIMINARY",
"message": {
"id": 345,
"topic": "igwn.gwalert",
"uuid": "32111ebd-d8e6-4515-aa9e-eb75bc489002",
"title": "S230618r - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230618r/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230618r/view/"
},
"event": {
"far": 1.55478e-05,
"time": "2023-06-18T09:07:27.898Z",
"group": "CBC",
"search": "AllSky",
"area_50": 534.6300519995133,
"area_90": 2063.8230735742595,
"duration": null,
"pipeline": "MBTA",
"properties": {
"HasNS": 0.0002100074768664958,
"HasMassGap": 0.18430250914662683,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "78afbdafa672791a96968502644185c4",
"classification": {
"BBH": 0.032511734,
"BNS": 0.0,
"NSBH": 2.071e-06,
"Terrestrial": 0.967486195
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-06-18T09:12:27Z",
"superevent_id": "S230618r",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-18T09:12:28.965120Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-18T09:12:28.965160Z",
"modified": "2023-06-18T09:12:28.970547Z"
}
}
],
"references": [
{
"id": 350,
"topic": "gcn.circular",
"uuid": "c6ddd75c-f604-4c07-b7e7-94ccbbf3e3d5",
"title": "LIGO/Virgo S230618r: Global MASTER-Net observations report",
"submitter": "Hop gcn.circular",
"authors": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"data": {
"date": "23/06/18 09:30:00 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "34005",
"subject": "LIGO/Virgo S230618r: Global MASTER-Net observations report"
},
"message_text": "V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko,\nG.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin\n(Lomonosov Moscow State University, SAI, Physics Department),\n\nR. Podesta, C.Lopez, F. Podesta, C.Francile\n(Observatorio Astronomico Felix Aguilar OAFA),\n\nR. Rebolo, M. Serra\n(The Instituto de Astrofisica de Canarias),\n\nD. Buckley\n(South African Astronomical Observatory),\n\nO.A. Gres, N.M. Budnev\n(Irkutsk State University, API),\n\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez\n(INAOE, Guillermo Haro Astrophysics Observatory),\n\nA. Tlatov, D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nA. Gabovich, V.Yurkov\n(Blagoveschensk Educational State University)\n\n\nMASTER-OAFA robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Argentina (OAFA observatory of San Juan National University) started inspect of the LIGO/Virgo S230618r errorbox 91 sec after notice time and 149 sec after trigger time at 2023-06-18 09:09:56 UT, with upper limit up to 17.5 mag. The observations began at zenith distance = 81 deg. The sun altitude is -29.5 deg.\n\nThe galactic latitude b = -28 deg., longitude l = 258 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/ligo_1.php?id\u0012104\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 159 | 2023-06-18 09:09:56 | MASTER-OAFA | (06h 03m 46.35s , -50d 36m 58.8s) | C | 20 | 16.7 |\n 220 | 2023-06-18 09:10:47 | MASTER-OAFA | (06h 03m 41.23s , -50d 37m 39.3s) | C | 40 | 17.0 |\n 503 | 2023-06-18 09:15:04 | MASTER-OAFA | (06h 03m 40.85s , -50d 38m 32.5s) | C | 90 | 17.5 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg3MDgwNjAyLCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.Ox-urVh4x12CpB2HHh5s3v3ZJ0zR9z3abVSc3dALilc\n\n",
"published": "2023-06-18T09:30:05.273907Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-18T09:30:05.273928Z",
"modified": "2023-06-18T09:30:05.278392Z",
"targets": []
}
]
},
{
"event_id": "S230616a",
"sequences": [],
"references": [
{
"id": 349,
"topic": "gcn.circular",
"uuid": "e8f848f2-4ec5-42e3-8f70-4be99183738a",
"title": "LIGO/Virgo S230616aa: Global MASTER-Net observations report",
"submitter": "Hop gcn.circular",
"authors": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"data": {
"date": "23/06/18 09:29:34 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "34004",
"subject": "LIGO/Virgo S230616aa: Global MASTER-Net observations report"
},
"message_text": "V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko,\nG.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin\n(Lomonosov Moscow State University, SAI, Physics Department),\n\nR. Podesta, C.Lopez, F. Podesta, C.Francile\n(Observatorio Astronomico Felix Aguilar OAFA),\n\nR. Rebolo, M. Serra\n(The Instituto de Astrofisica de Canarias),\n\nD. Buckley\n(South African Astronomical Observatory),\n\nO.A. Gres, N.M. Budnev\n(Irkutsk State University, API),\n\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez\n(INAOE, Guillermo Haro Astrophysics Observatory),\n\nA. Tlatov, D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nA. Gabovich, V.Yurkov\n(Blagoveschensk Educational State University)\n\n\nMASTER-OAFA robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Argentina (OAFA observatory of San Juan National University) started inspect of the LIGO/Virgo S230616aa errorbox 32511 sec after notice time and 32588 sec after trigger time at 2023-06-16 22:40:41 UT, with upper limit up to 20.5 mag. Observations started at twilight. The observations began at zenith distance = 46 deg. The sun altitude is -12.9 deg.\n\nMASTER-Tunka robotic telescope located in Russia (Applied Physics Institute, Irkutsk State University) started inspect of the LIGO/Virgo S230616aa errorbox 1 days 8285 sec after notice time and 1 days 8363 sec after trigger time at 2023-06-17 15:56:56 UT, with upper limit up to 14.8 mag. Observations started at twilight. The observations began at zenith distance = 64 deg. The sun altitude is -14.0 deg.\n\nThe galactic latitude b = 27 deg., longitude l = 28 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/ligo_1.php?id\u0012070\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 32679 | 2023-06-16 22:40:41 | MASTER-OAFA | (13h 03m 19.42s , +11d 22m 28.4s) | C | 180 | 18.6 |\n 33774 | 2023-06-16 22:58:57 | MASTER-OAFA | (11h 39m 24.10s , +22d 45m 41.5s) | C | 180 | 19.0 |\n 33986 | 2023-06-16 23:02:28 | MASTER-OAFA | (11h 48m 07.64s , +22d 46m 11.6s) | C | 180 | 19.1 |\n 34335 | 2023-06-16 23:08:17 | MASTER-OAFA | (12h 53m 08.58s , +13d 17m 57.4s) | C | 180 | 19.5 |\n 34763 | 2023-06-16 23:15:25 | MASTER-OAFA | (11h 39m 23.55s , +22d 47m 47.7s) | C | 180 | 19.2 |\n 35180 | 2023-06-16 23:22:22 | MASTER-OAFA | (12h 53m 02.90s , +13d 16m 15.1s) | C | 180 | 19.5 |\n 35837 | 2023-06-16 23:33:20 | MASTER-OAFA | (13h 07m 38.70s , +15d 11m 56.0s) | C | 180 | 19.6 |\n 36048 | 2023-06-16 23:36:51 | MASTER-OAFA | (13h 06m 26.88s , +17d 06m 05.1s) | C | 180 | 19.6 |\n 36259 | 2023-06-16 23:40:22 | MASTER-OAFA | (13h 14m 53.53s , +17d 05m 01.0s) | C | 180 | 19.6 |\n 36670 | 2023-06-16 23:47:13 | MASTER-OAFA | (13h 07m 36.47s , +15d 10m 23.3s) | C | 180 | 19.7 |\n 36881 | 2023-06-16 23:50:44 | MASTER-OAFA | (13h 06m 30.05s , +17d 05m 55.7s) | C | 180 | 19.6 |\n 37092 | 2023-06-16 23:54:15 | MASTER-OAFA | (12h 38m 59.56s , +17d 42m 24.8s) | C | 180 | 19.5 |\n 37272 | 2023-06-16 23:54:15 | MASTER-OAFA | (12h 38m 59.56s , +17d 42m 24.8s) | C | 540 | 19.8 | Coadd\n 39972 | 2023-06-16 23:54:15 | MASTER-OAFA | (12h 38m 59.56s , +17d 42m 24.8s) | C | 5940 | 20.2 | Coadd\n 37303 | 2023-06-16 23:57:46 | MASTER-OAFA | (12h 39m 01.88s , +17d 43m 47.9s) | C | 180 | 19.4 |\n 37633 | 2023-06-17 00:03:15 | MASTER-OAFA | (12h 38m 56.60s , +17d 44m 12.6s) | C | 180 | 19.5 |\n 38054 | 2023-06-17 00:10:17 | MASTER-OAFA | (12h 38m 55.28s , +17d 42m 08.5s) | C | 180 | 19.4 |\n 38234 | 2023-06-17 00:10:17 | MASTER-OAFA | (12h 38m 55.28s , +17d 42m 08.5s) | C | 540 | 19.8 | Coadd\n 38266 | 2023-06-17 00:13:49 | MASTER-OAFA | (12h 39m 01.27s , +17d 42m 10.8s) | C | 180 | 19.4 |\n 38477 | 2023-06-17 00:17:20 | MASTER-OAFA | (12h 38m 58.57s , +17d 43m 57.1s) | C | 180 | 19.4 |\n 38688 | 2023-06-17 00:20:51 | MASTER-OAFA | (12h 38m 58.40s , +17d 42m 03.2s) | C | 180 | 19.4 |\n 38868 | 2023-06-17 00:20:51 | MASTER-OAFA | (12h 38m 58.41s , +17d 42m 03.2s) | C | 540 | 19.8 | Coadd\n 38899 | 2023-06-17 00:24:22 | MASTER-OAFA | (12h 39m 01.19s , +17d 43m 55.3s) | C | 180 | 19.5 |\n 39320 | 2023-06-17 00:31:22 | MASTER-OAFA | (12h 38m 54.81s , +17d 43m 53.0s) | C | 180 | 19.4 |\n 39532 | 2023-06-17 00:34:54 | MASTER-OAFA | (12h 39m 01.89s , +17d 42m 51.3s) | C | 180 | 19.4 |\n 39712 | 2023-06-17 00:34:54 | MASTER-OAFA | (12h 39m 01.89s , +17d 42m 51.3s) | C | 540 | 19.8 | Coadd\n 39742 | 2023-06-17 00:38:25 | MASTER-OAFA | (12h 38m 55.64s , +17d 41m 48.4s) | C | 180 | 19.4 |\n 39953 | 2023-06-17 00:41:56 | MASTER-OAFA | (12h 38m 59.87s , +17d 42m 02.1s) | C | 180 | 19.4 |\n 40164 | 2023-06-17 00:45:27 | MASTER-OAFA | (13h 21m 20.40s , +08d 51m 14.9s) | C | 180 | 19.7 |\n 40344 | 2023-06-17 00:45:27 | MASTER-OAFA | (13h 21m 20.40s , +08d 51m 15.0s) | C | 540 | 20.1 | Coadd\n 40884 | 2023-06-17 00:45:27 | MASTER-OAFA | (13h 21m 20.39s , +08d 51m 15.0s) | C | 1620 | 20.5 | Coadd\n 40375 | 2023-06-17 00:48:58 | MASTER-OAFA | (13h 21m 20.33s , +08d 49m 31.4s) | C | 180 | 19.7 |\n 40996 | 2023-06-17 00:59:18 | MASTER-OAFA | (13h 21m 17.52s , +08d 51m 17.9s) | C | 180 | 19.7 |\n 41471 | 2023-06-17 01:07:13 | MASTER-OAFA | (13h 21m 17.23s , +08d 49m 13.8s) | C | 180 | 19.7 |\n 41651 | 2023-06-17 01:07:13 | MASTER-OAFA | (13h 21m 17.22s , +08d 49m 13.7s) | C | 540 | 20.1 | Coadd\n 41834 | 2023-06-17 01:13:17 | MASTER-OAFA | (13h 21m 19.54s , +08d 50m 55.4s) | C | 180 | 19.6 |\n 42371 | 2023-06-17 01:22:14 | MASTER-OAFA | (13h 21m 17.09s , +08d 50m 04.9s) | C | 180 | 19.6 |\n 42583 | 2023-06-17 01:25:45 | MASTER-OAFA | (13h 21m 15.89s , +08d 51m 02.3s) | C | 180 | 19.6 |\n 42763 | 2023-06-17 01:25:45 | MASTER-OAFA | (13h 21m 15.88s , +08d 51m 02.3s) | C | 540 | 20.0 | Coadd\n 42794 | 2023-06-17 01:29:16 | MASTER-OAFA | (13h 21m 22.61s , +08d 50m 01.1s) | C | 180 | 19.6 |\n 43004 | 2023-06-17 01:32:47 | MASTER-OAFA | (13h 21m 15.30s , +08d 48m 58.8s) | C | 180 | 19.6 |\n 43331 | 2023-06-17 01:38:14 | MASTER-OAFA | (12h 02m 50.74s , +20d 50m 57.0s) | C | 180 | 19.3 |\n 43543 | 2023-06-17 01:41:45 | MASTER-OAFA | (12h 11m 26.41s , +20d 52m 23.1s) | C | 180 | 19.4 |\n 43872 | 2023-06-17 01:47:14 | MASTER-OAFA | (12h 14m 46.76s , +24d 39m 32.1s) | C | 180 | 19.1 |\n 44083 | 2023-06-17 01:50:46 | MASTER-OAFA | (12h 02m 47.54s , +20d 50m 25.1s) | C | 180 | 19.3 |\n 44294 | 2023-06-17 01:54:17 | MASTER-OAFA | (12h 38m 57.19s , +17d 40m 59.0s) | C | 180 | 19.3 |\n 44474 | 2023-06-17 01:54:17 | MASTER-OAFA | (12h 38m 57.19s , +17d 40m 59.1s) | C | 540 | 19.7 | Coadd\n 44506 | 2023-06-17 01:57:48 | MASTER-OAFA | (12h 38m 54.87s , +17d 42m 35.6s) | C | 180 | 19.3 |\n 45377 | 2023-06-17 02:12:19 | MASTER-OAFA | (12h 38m 52.17s , +17d 42m 46.0s) | C | 180 | 19.3 |\n 45731 | 2023-06-17 02:18:14 | MASTER-OAFA | (12h 38m 50.55s , +17d 40m 42.6s) | C | 180 | 19.3 |\n 45911 | 2023-06-17 02:18:14 | MASTER-OAFA | (12h 38m 50.56s , +17d 40m 42.6s) | C | 540 | 19.7 | Coadd\n 45943 | 2023-06-17 02:21:45 | MASTER-OAFA | (12h 38m 57.28s , +17d 40m 56.9s) | C | 180 | 19.2 |\n 46154 | 2023-06-17 02:25:16 | MASTER-OAFA | (12h 38m 53.90s , +17d 42m 28.9s) | C | 180 | 19.2 |\n 46365 | 2023-06-17 02:28:48 | MASTER-OAFA | (12h 38m 53.77s , +17d 40m 46.5s) | C | 180 | 19.3 |\n 46545 | 2023-06-17 02:28:48 | MASTER-OAFA | (12h 38m 53.77s , +17d 40m 46.5s) | C | 540 | 19.6 | Coadd\n 46819 | 2023-06-17 02:36:22 | MASTER-OAFA | (12h 38m 50.24s , +17d 41m 30.1s) | C | 180 | 19.3 |\n 47031 | 2023-06-17 02:39:53 | MASTER-OAFA | (12h 38m 51.17s , +17d 42m 28.0s) | C | 180 | 19.2 |\n 47242 | 2023-06-17 02:43:24 | MASTER-OAFA | (12h 38m 56.11s , +17d 41m 27.0s) | C | 180 | 19.1 |\n 47422 | 2023-06-17 02:43:24 | MASTER-OAFA | (12h 38m 56.11s , +17d 41m 27.0s) | C | 540 | 19.6 | Coadd\n 47453 | 2023-06-17 02:46:55 | MASTER-OAFA | (12h 38m 50.95s , +17d 40m 23.7s) | C | 180 | 19.2 |\n 47664 | 2023-06-17 02:50:26 | MASTER-OAFA | (12h 38m 55.51s , +17d 40m 24.9s) | C | 180 | 19.1 |\n 48135 | 2023-06-17 02:58:17 | MASTER-OAFA | (12h 38m 52.90s , +17d 40m 19.4s) | C | 180 | 19.0 |\n 48315 | 2023-06-17 02:58:17 | MASTER-OAFA | (12h 38m 52.90s , +17d 40m 19.3s) | C | 540 | 19.6 | Coadd\n 48346 | 2023-06-17 03:01:48 | MASTER-OAFA | (12h 38m 56.25s , +17d 41m 57.7s) | C | 180 | 19.0 |\n 48557 | 2023-06-17 03:05:20 | MASTER-OAFA | (12h 38m 49.66s , +17d 41m 15.0s) | C | 180 | 19.1 |\n 48769 | 2023-06-17 03:08:51 | MASTER-OAFA | (12h 38m 49.92s , +17d 42m 11.8s) | C | 180 | 19.0 |\n 48949 | 2023-06-17 03:08:51 | MASTER-OAFA | (12h 38m 49.92s , +17d 42m 11.8s) | C | 540 | 19.4 | Coadd\n 48954 | 2023-06-17 03:11:57 | MASTER- | (12h 53m 47.45s , +12d 27m 13.1s) | C | 180 | 16.6 |\n 49150 | 2023-06-17 03:15:12 | MASTER-OAFA | (12h 38m 49.69s , +17d 40m 08.2s) | C | 180 | 19.0 |\n 49154 | 2023-06-17 03:15:17 | MASTER- | (13h 01m 59.83s , +12d 25m 59.7s) | C | 180 | 17.0 |\n 49493 | 2023-06-17 03:20:56 | MASTER- | (10h 40m 23.72s , +38d 54m 48.9s) | C | 180 | 17.3 |\n 49643 | 2023-06-17 03:23:25 | MASTER-OAFA | (12h 38m 52.27s , +17d 41m 46.0s) | C | 180 | 18.8 |\n 49693 | 2023-06-17 03:24:16 | MASTER- | (10h 50m 36.68s , +38d 54m 38.8s) | C | 180 | 17.8 |\n 49854 | 2023-06-17 03:26:57 | MASTER-OAFA | (12h 38m 52.12s , +17d 40m 20.3s) | C | 180 | 18.8 |\n 50034 | 2023-06-17 03:26:57 | MASTER-OAFA | (12h 38m 52.11s , +17d 40m 20.3s) | C | 540 | 19.4 | Coadd\n 49893 | 2023-06-17 03:27:36 | MASTER- | (12h 53m 43.89s , +12d 26m 39.3s) | C | 180 | 18.1 |\n 50065 | 2023-06-17 03:30:28 | MASTER-OAFA | (12h 38m 55.13s , +17d 41m 48.1s) | C | 180 | 18.8 |\n 50093 | 2023-06-17 03:30:56 | MASTER- | (13h 02m 01.16s , +12d 25m 51.8s) | C | 180 | 18.0 |\n 50277 | 2023-06-17 03:33:59 | MASTER-OAFA | (12h 38m 49.99s , +17d 40m 57.0s) | C | 180 | 18.7 |\n 50293 | 2023-06-17 03:34:16 | MASTER- | (13h 00m 01.50s , +14d 18m 38.9s) | C | 180 | 18.7 |\n 50555 | 2023-06-17 03:38:38 | MASTER- | (13h 04m 02.14s , +10d 32m 07.6s) | C | 180 | 15.6 |\n 50575 | 2023-06-17 03:38:58 | MASTER- | (13h 12m 05.29s , +10d 31m 51.3s) | C | 180 | 18.6 |\n 51032 | 2023-06-17 03:46:35 | MASTER-OAFA | (13h 18m 35.29s , +11d 21m 18.5s) | C | 180 | 19.1 |\n 51162 | 2023-06-17 03:48:44 | MASTER- | (11h 48m 33.56s , +21d 49m 56.4s) | C | 180 | 15.7 |\n 51243 | 2023-06-17 03:50:06 | MASTER-OAFA | (13h 26m 50.90s , +11d 20m 21.6s) | C | 180 | 19.3 |\n 51362 | 2023-06-17 03:52:04 | MASTER- | (12h 59m 58.71s , +14d 17m 38.5s) | C | 180 | 18.7 |\n 51562 | 2023-06-17 03:55:24 | MASTER- | (13h 08m 12.60s , +14d 19m 43.9s) | C | 180 | 18.1 |\n 51762 | 2023-06-17 03:58:44 | MASTER- | (13h 04m 00.10s , +10d 29m 29.5s) | C | 180 | 18.1 |\n 51962 | 2023-06-17 04:02:05 | MASTER- | (13h 12m 10.66s , +10d 31m 22.8s) | C | 180 | 18.4 |\n 52517 | 2023-06-17 04:11:20 | MASTER- | (11h 48m 33.57s , +21d 50m 31.0s) | C | 180 | 14.3 |\n 52593 | 2023-06-17 04:12:35 | MASTER-OAFA | (13h 26m 43.51s , +11d 18m 54.9s) | C | 180 | 18.9 |\n 52857 | 2023-06-17 04:16:59 | MASTER- | (12h 06m 26.82s , +23d 43m 07.2s) | C | 180 | 16.4 |\n 53195 | 2023-06-17 04:22:38 | MASTER- | (12h 15m 17.88s , +23d 43m 23.6s) | C | 180 | 17.8 |\n 53535 | 2023-06-17 04:28:17 | MASTER- | (12h 06m 29.92s , +23d 43m 22.6s) | C | 180 | 17.5 |\n 53873 | 2023-06-17 04:33:56 | MASTER- | (12h 15m 15.82s , +23d 42m 24.5s) | C | 180 | 18.2 |\n 54211 | 2023-06-17 04:39:33 | MASTER- | (12h 03m 24.55s , +19d 53m 41.8s) | C | 180 | 17.0 |\n 54549 | 2023-06-17 04:45:11 | MASTER- | (12h 11m 57.30s , +19d 54m 55.6s) | C | 180 | 18.7 |\n 54888 | 2023-06-17 04:50:50 | MASTER- | (12h 03m 32.12s , +19d 52m 49.6s) | C | 180 | 18.2 |\n 55198 | 2023-06-17 04:56:00 | MASTER-OAFA | (13h 12m 59.86s , -07d 40m 31.5s) | C | 180 | 18.7 |\n 55226 | 2023-06-17 04:56:29 | MASTER- | (12h 11m 57.70s , +19d 52m 03.1s) | C | 180 | 18.2 |\n 55621 | 2023-06-17 05:03:03 | MASTER-OAFA | (13h 21m 07.03s , -07d 38m 39.7s) | C | 180 | 19.0 |\n 55909 | 2023-06-17 05:07:52 | MASTER- | (12h 43m 32.71s , +25d 36m 13.3s) | C | 180 | 19.0 |\n 56586 | 2023-06-17 05:19:09 | MASTER- | (12h 43m 29.93s , +25d 35m 53.8s) | C | 180 | 18.9 |\n 56926 | 2023-06-17 05:24:48 | MASTER- | (11h 44m 05.25s , +25d 30m 45.7s) | C | 180 | 17.9 |\n 57264 | 2023-06-17 05:30:27 | MASTER- | (11h 52m 51.92s , +25d 30m 00.4s) | C | 180 | 17.8 |\n 57603 | 2023-06-17 05:36:05 | MASTER- | (11h 44m 05.98s , +25d 29m 18.3s) | C | 180 | 17.5 |\n 57941 | 2023-06-17 05:41:44 | MASTER- | (11h 52m 55.51s , +25d 30m 59.6s) | C | 180 | 18.0 |\n 58280 | 2023-06-17 05:47:22 | MASTER- | (11h 50m 01.32s , +23d 36m 09.1s) | C | 180 | 18.0 |\n 58618 | 2023-06-17 05:53:00 | MASTER- | (11h 58m 40.06s , +23d 35m 38.2s) | C | 180 | 18.3 |\n 58956 | 2023-06-17 05:58:39 | MASTER- | (11h 49m 55.78s , +23d 35m 29.1s) | C | 180 | 17.8 |\n 59301 | 2023-06-17 06:04:24 | MASTER- | (11h 58m 47.50s , +23d 34m 43.7s) | C | 180 | 18.4 |\n 59640 | 2023-06-17 06:10:03 | MASTER- | (11h 56m 32.86s , +21d 39m 31.1s) | C | 180 | 17.5 |\n 59979 | 2023-06-17 06:15:41 | MASTER- | (12h 05m 07.71s , +21d 41m 05.0s) | C | 180 | 18.3 |\n 60317 | 2023-06-17 06:21:19 | MASTER- | (11h 56m 31.24s , +21d 38m 26.9s) | C | 180 | 18.1 |\n 60655 | 2023-06-17 06:26:58 | MASTER- | (12h 05m 11.15s , +21d 40m 20.9s) | C | 180 | 18.2 |\n 60971 | 2023-06-17 06:32:14 | MASTER-OAFA | (13h 39m 13.01s , -51d 22m 58.0s) | C | 180 | 18.1 |\n 60993 | 2023-06-17 06:32:36 | MASTER- | (12h 17m 50.56s , +25d 29m 03.8s) | C | 180 | 18.7 |\n 61331 | 2023-06-17 06:38:13 | MASTER- | (12h 26m 49.22s , +25d 28m 19.3s) | C | 180 | 18.6 |\n 61670 | 2023-06-17 06:43:53 | MASTER- | (12h 17m 50.69s , +25d 26m 10.4s) | C | 180 | 18.8 |\n 62190 | 2023-06-17 06:52:33 | MASTER- | (11h 51m 39.54s , +29d 11m 38.5s) | C | 180 | 17.7 |\n 62529 | 2023-06-17 06:58:12 | MASTER- | (12h 00m 54.66s , +29d 13m 17.6s) | C | 180 | 18.2 |\n 62873 | 2023-06-17 07:03:56 | MASTER- | (11h 51m 38.28s , +29d 11m 35.6s) | C | 180 | 18.1 |\n 63211 | 2023-06-17 07:09:33 | MASTER- | (12h 00m 49.96s , +29d 12m 49.7s) | C | 180 | 18.0 |\n 63550 | 2023-06-17 07:15:12 | MASTER- | (12h 01m 03.72s , +25d 22m 25.9s) | C | 180 | 18.1 |\n 63888 | 2023-06-17 07:20:51 | MASTER- | (12h 10m 04.38s , +25d 23m 09.2s) | C | 180 | 18.2 |\n 64227 | 2023-06-17 07:26:29 | MASTER- | (12h 01m 08.91s , +25d 23m 12.1s) | C | 180 | 18.1 |\n 64565 | 2023-06-17 07:32:08 | MASTER- | (12h 10m 02.33s , +25d 22m 18.2s) | C | 180 | 18.5 |\n 64905 | 2023-06-17 07:37:47 | MASTER- | (11h 27m 26.57s , +25d 19m 57.9s) | C | 180 | 16.6 |\n 65244 | 2023-06-17 07:43:26 | MASTER- | (13h 07m 13.57s , +15d 55m 50.2s) | C | 180 | 18.7 |\n 65582 | 2023-06-17 07:49:05 | MASTER- | (13h 15m 40.60s , +15d 56m 28.8s) | C | 180 | 18.5 |\n 65921 | 2023-06-17 07:54:44 | MASTER- | (13h 07m 22.01s , +15d 56m 52.4s) | C | 180 | 18.3 |\n 66260 | 2023-06-17 08:00:23 | MASTER- | (13h 15m 35.59s , +15d 56m 11.5s) | C | 180 | 18.4 |\n 66551 | 2023-06-17 08:05:14 | MASTER- | (21h 16m 50.77s , +03d 35m 23.2s) | C | 180 | 18.9 |\n 66890 | 2023-06-17 08:10:52 | MASTER- | (10h 59m 07.62s , +40d 27m 35.6s) | C | 180 | 16.1 |\n 67228 | 2023-06-17 08:16:31 | MASTER- | (11h 56m 18.41s , +27d 12m 44.8s) | C | 180 | 16.5 |\n 67549 | 2023-06-17 08:21:51 | MASTER- | (21h 16m 57.02s , +03d 35m 19.0s) | C | 180 | 19.1 |\n 67891 | 2023-06-17 08:27:33 | MASTER- | (11h 19m 20.17s , +40d 29m 37.4s) | C | 180 | 16.3 |\n 68434 | 2023-06-17 08:36:36 | MASTER- | (21h 16m 50.36s , +03d 35m 49.2s) | C | 180 | 18.9 |\n 69113 | 2023-06-17 08:47:55 | MASTER- | (12h 36m 13.78s , +19d 38m 00.6s) | C | 180 | 16.1 |\n 69456 | 2023-06-17 08:53:38 | MASTER- | (12h 43m 40.12s , +17d 43m 19.9s) | C | 180 | 15.5 |\n 69795 | 2023-06-17 08:59:18 | MASTER- | (12h 40m 10.79s , +23d 25m 34.2s) | C | 180 | 16.3 |\n 70487 | 2023-06-17 09:10:49 | MASTER- | (12h 56m 52.77s , +23d 25m 59.4s) | C | 180 | 16.7 |\n 70830 | 2023-06-17 09:16:32 | MASTER- | (13h 02m 26.78s , +21d 32m 42.1s) | C | 180 | 16.4 |\n 71172 | 2023-06-17 09:22:15 | MASTER- | (13h 08m 41.35s , +19d 37m 08.1s) | C | 180 | 15.6 |\n 71377 | 2023-06-17 09:25:39 | MASTER- | (23h 28m 31.23s , +51d 15m 20.0s) | C | 180 | 16.4 |\n 71577 | 2023-06-17 09:29:00 | MASTER- | (23h 41m 14.84s , +51d 14m 11.9s) | C | 180 | 14.7 |\n 72179 | 2023-06-17 09:39:01 | MASTER- | (23h 28m 25.13s , +51d 15m 39.2s) | C | 180 | 18.4 |\n 72379 | 2023-06-17 09:42:22 | MASTER- | (23h 41m 10.21s , +51d 14m 21.0s) | C | 180 | 18.0 |\n 73372 | 2023-06-17 09:58:55 | MASTER- | (23h 20m 23.66s , +49d 22m 43.1s) | C | 180 | 18.1 |\n 73573 | 2023-06-17 10:02:15 | MASTER- | (23h 32m 39.78s , +49d 21m 28.2s) | C | 180 | 18.4 |\n 74174 | 2023-06-17 10:12:17 | MASTER- | (23h 20m 23.91s , +49d 22m 48.4s) | C | 180 | 18.4 |\n 74375 | 2023-06-17 10:15:37 | MASTER- | (23h 32m 33.82s , +49d 21m 03.5s) | C | 180 | 15.9 |\n 74575 | 2023-06-17 10:18:58 | MASTER- | (23h 08m 18.35s , +43d 39m 25.8s) | C | 180 | 14.6 |\n 74776 | 2023-06-17 10:22:19 | MASTER- | (23h 19m 18.11s , +43d 41m 54.3s) | C | 180 | 14.4 |\n 74977 | 2023-06-17 10:25:39 | MASTER- | (23h 10m 29.75s , +45d 33m 48.8s) | C | 180 | 15.5 |\n 75177 | 2023-06-17 10:29:00 | MASTER- | (23h 21m 56.84s , +45d 34m 03.4s) | C | 180 | 14.4 |\n 75378 | 2023-06-17 10:32:20 | MASTER- | (23h 08m 19.32s , +43d 41m 51.6s) | C | 180 | 15.4 |\n 75578 | 2023-06-17 10:35:40 | MASTER- | (23h 19m 16.90s , +43d 38m 53.8s) | C | 180 | 14.8 |\n 75777 | 2023-06-17 10:39:00 | MASTER- | (23h 10m 31.31s , +45d 35m 02.3s) | C | 180 | 18.3 |\n 75978 | 2023-06-17 10:42:20 | MASTER- | (23h 21m 45.65s , +45d 34m 21.6s) | C | 180 | 18.4 |\n 76178 | 2023-06-17 10:45:40 | MASTER- | (23h 14m 25.18s , +47d 28m 30.6s) | C | 180 | 18.7 |\n 76379 | 2023-06-17 10:49:01 | MASTER- | (23h 26m 02.43s , +47d 27m 28.0s) | C | 180 | 17.5 |\n 77335 | 2023-06-17 11:04:58 | MASTER- | (23h 14m 12.75s , +47d 29m 31.8s) | C | 180 | 18.1 |\n 77536 | 2023-06-17 11:08:18 | MASTER- | (23h 26m 04.48s , +47d 28m 33.1s) | C | 180 | 18.0 |\n 94853 | 2023-06-17 15:56:56 | MASTER-Tunka | (12h 22m 10.58s , +11d 36m 39.9s) | C | 180 | 14.6 |\n 97659 | 2023-06-17 16:43:41 | MASTER-Tunka | (10h 43m 12.44s , +41d 57m 00.7s) | C | 180 | 14.8 |\n 100845 | 2023-06-17 17:36:48 | MASTER-Tunka | (11h 04m 56.55s , +39d 59m 34.2s) | C | 180 | 14.4 |\n 101045 | 2023-06-17 17:40:07 | MASTER-Tunka | (10h 30m 52.71s , +43d 45m 52.2s) | C | 180 | 14.6 |\n 101443 | 2023-06-17 17:46:46 | MASTER-Tunka | (11h 44m 29.74s , +32d 26m 57.5s) | C | 180 | 14.4 |\n 101842 | 2023-06-17 17:53:24 | MASTER-Tunka | (10h 30m 51.37s , +43d 45m 08.8s) | C | 180 | 14.3 |\n 102041 | 2023-06-17 17:56:44 | MASTER-Tunka | (10h 41m 37.50s , +43d 45m 39.7s) | C | 180 | 14.5 |\n 103634 | 2023-06-17 18:23:16 | MASTER-Tunka | (11h 03m 02.49s , +41d 52m 32.0s) | C | 180 | 14.0 |\n 124639 | 2023-06-18 00:13:21 | MASTER-OAFA | (12h 55m 53.74s , +11d 22m 35.5s) | C | 180 | 19.2 |\n 124850 | 2023-06-18 00:16:53 | MASTER-OAFA | (12h 43m 27.15s , +09d 28m 40.1s) | C | 180 | 19.4 |\n 125308 | 2023-06-18 00:24:31 | MASTER-OAFA | (12h 47m 50.63s , +11d 22m 03.2s) | C | 180 | 19.3 |\n 125713 | 2023-06-18 00:31:16 | MASTER-OAFA | (12h 43m 24.23s , +09d 27m 59.0s) | C | 180 | 19.4 |\n 126197 | 2023-06-18 00:39:19 | MASTER-OAFA | (12h 27m 57.29s , +09d 29m 27.7s) | C | 180 | 19.5 |\n 126504 | 2023-06-18 00:44:27 | MASTER-OAFA | (12h 24m 37.74s , +07d 33m 45.6s) | C | 180 | 19.6 |\n 126794 | 2023-06-18 00:49:17 | MASTER-OAFA | (12h 32m 20.12s , +11d 23m 15.1s) | C | 180 | 19.3 |\n 127006 | 2023-06-18 00:52:48 | MASTER-OAFA | (12h 40m 23.58s , +11d 22m 17.1s) | C | 180 | 19.4 |\n 127217 | 2023-06-18 00:56:19 | MASTER-OAFA | (12h 27m 55.94s , +09d 29m 14.8s) | C | 180 | 19.5 |\n 127428 | 2023-06-18 00:59:51 | MASTER-OAFA | (12h 36m 09.42s , +09d 28m 15.3s) | C | 180 | 19.4 |\n 127813 | 2023-06-18 01:06:15 | MASTER-OAFA | (12h 32m 41.93s , +07d 33m 37.7s) | C | 180 | 19.5 |\n 128024 | 2023-06-18 01:09:47 | MASTER-OAFA | (12h 32m 16.22s , +11d 22m 50.8s) | C | 180 | 19.4 |\n 128236 | 2023-06-18 01:13:18 | MASTER-OAFA | (12h 40m 25.47s , +11d 21m 31.0s) | C | 180 | 19.5 |\n 128447 | 2023-06-18 01:16:50 | MASTER-OAFA | (12h 39m 50.04s , +07d 34m 07.7s) | C | 180 | 19.4 |\n 128780 | 2023-06-18 01:22:22 | MASTER-OAFA | (12h 21m 56.29s , +05d 38m 59.2s) | C | 180 | 19.6 |\n 128991 | 2023-06-18 01:25:54 | MASTER-OAFA | (13h 03m 14.12s , +11d 22m 47.0s) | C | 180 | 19.3 |\n 129203 | 2023-06-18 01:29:25 | MASTER-OAFA | (12h 30m 01.81s , +05d 39m 24.2s) | C | 180 | 19.6 |\n 129414 | 2023-06-18 01:32:57 | MASTER-OAFA | (13h 11m 25.83s , +11d 22m 28.9s) | C | 180 | 19.4 |\n 129625 | 2023-06-18 01:36:28 | MASTER-OAFA | (12h 39m 49.70s , +07d 33m 56.6s) | C | 180 | 19.4 |\n 129975 | 2023-06-18 01:42:17 | MASTER-OAFA | (12h 22m 01.19s , +05d 39m 46.6s) | C | 180 | 19.7 |\n 130186 | 2023-06-18 01:45:49 | MASTER-OAFA | (13h 03m 10.62s , +11d 20m 48.7s) | C | 180 | 19.4 |\n 130576 | 2023-06-18 01:52:19 | MASTER-OAFA | (13h 11m 22.31s , +11d 22m 24.7s) | C | 180 | 19.5 |\n 130788 | 2023-06-18 01:55:50 | MASTER-OAFA | (12h 53m 04.75s , +13d 16m 39.1s) | C | 180 | 19.3 |\n 130999 | 2023-06-18 01:59:21 | MASTER-OAFA | (13h 01m 10.09s , +13d 15m 38.4s) | C | 180 | 19.5 |\n 131210 | 2023-06-18 02:02:53 | MASTER-OAFA | (12h 59m 16.56s , +15d 09m 34.5s) | C | 180 | 19.5 |\n 131421 | 2023-06-18 02:06:24 | MASTER-OAFA | (13h 07m 26.61s , +15d 08m 32.8s) | C | 180 | 19.5 |\n 131633 | 2023-06-18 02:09:55 | MASTER-OAFA | (12h 53m 04.33s , +13d 14m 51.2s) | C | 180 | 19.4 |\n 131844 | 2023-06-18 02:13:26 | MASTER-OAFA | (13h 01m 12.86s , +13d 16m 25.7s) | C | 180 | 19.4 |\n 132055 | 2023-06-18 02:16:58 | MASTER-OAFA | (12h 59m 13.24s , +15d 08m 45.1s) | C | 180 | 19.3 |\n 132266 | 2023-06-18 02:20:29 | MASTER-OAFA | (13h 07m 33.35s , +15d 10m 00.0s) | C | 180 | 19.4 |\n 132477 | 2023-06-18 02:24:00 | MASTER-OAFA | (13h 06m 21.26s , +17d 04m 21.2s) | C | 180 | 19.4 |\n 132688 | 2023-06-18 02:27:31 | MASTER-OAFA | (13h 14m 47.91s , +17d 03m 19.4s) | C | 180 | 19.1 |\n 132899 | 2023-06-18 02:31:02 | MASTER-OAFA | (12h 58m 38.67s , +18d 56m 27.2s) | C | 180 | 19.1 |\n 133110 | 2023-06-18 02:34:33 | MASTER-OAFA | (13h 07m 01.73s , +18d 58m 05.5s) | C | 180 | 19.1 |\n 133321 | 2023-06-18 02:38:04 | MASTER-OAFA | (13h 06m 24.35s , +17d 02m 30.9s) | C | 180 | 19.2 |\n 133652 | 2023-06-18 02:43:34 | MASTER-OAFA | (12h 58m 33.14s , +18d 57m 04.9s) | C | 180 | 19.1 |\n 133863 | 2023-06-18 02:47:06 | MASTER-OAFA | (13h 06m 58.32s , +18d 58m 03.3s) | C | 180 | 19.1 |\n 134511 | 2023-06-18 02:57:54 | MASTER-OAFA | (13h 07m 40.24s , +20d 49m 58.3s) | C | 180 | 19.1 |\n 134722 | 2023-06-18 03:01:25 | MASTER-OAFA | (12h 43m 26.12s , +15d 08m 54.7s) | C | 180 | 19.2 |\n 135194 | 2023-06-18 03:09:16 | MASTER-OAFA | (13h 01m 28.90s , +22d 44m 46.3s) | C | 180 | 19.1 |\n 135386 | 2023-06-18 03:12:29 | MASTER- | (11h 08m 29.72s , +42d 44m 32.7s) | C | 180 | 12.5 |\n 135405 | 2023-06-18 03:12:48 | MASTER-OAFA | (12h 51m 41.58s , +15d 07m 53.6s) | C | 180 | 18.8 |\n 135728 | 2023-06-18 03:18:11 | MASTER- | (10h 20m 42.13s , +38d 53m 10.8s) | C | 180 | 12.4 |\n 135828 | 2023-06-18 03:19:50 | MASTER-OAFA | (13h 07m 39.93s , +20d 51m 19.6s) | C | 180 | 18.8 |\n 136068 | 2023-06-18 03:23:50 | MASTER- | (10h 31m 00.99s , +38d 52m 32.6s) | C | 180 | 14.8 |\n 136209 | 2023-06-18 03:26:11 | MASTER-OAFA | (13h 16m 15.17s , +20d 51m 36.8s) | C | 180 | 18.7 |\n 136268 | 2023-06-18 03:27:11 | MASTER- | (10h 57m 37.91s , +42d 43m 58.0s) | C | 180 | 17.9 |\n 136468 | 2023-06-18 03:30:31 | MASTER- | (11h 08m 28.59s , +42d 44m 08.5s) | C | 180 | 17.9 |\n 136702 | 2023-06-18 03:34:24 | MASTER-OAFA | (13h 14m 52.07s , +15d 08m 42.1s) | C | 180 | 18.9 |\n 136807 | 2023-06-18 03:36:10 | MASTER- | (10h 20m 38.75s , +38d 52m 00.3s) | C | 180 | 17.0 |\n 136913 | 2023-06-18 03:37:56 | MASTER-OAFA | (13h 23m 02.05s , +15d 07m 39.5s) | C | 180 | 18.9 |\n 137149 | 2023-06-18 03:41:51 | MASTER- | (10h 31m 05.15s , +38d 51m 42.0s) | C | 180 | 15.5 |\n 137795 | 2023-06-18 03:54:03 | MASTER-OAFA | (13h 04m 35.76s , +03d 57m 37.8s) | C | 10 | 16.9 |\n 137826 | 2023-06-18 03:54:34 | MASTER- | (13h 05m 46.28s , +03d 07m 00.1s) | C | 10 | 15.6 |\n 137837 | 2023-06-18 03:54:44 | MASTER-OAFA | (13h 04m 41.54s , +03d 56m 37.8s) | C | 10 | 16.9 |\n 137861 | 2023-06-18 03:55:03 | MASTER- | (13h 05m 39.10s , +03d 06m 26.2s) | C | 20 | 16.1 |\n 137883 | 2023-06-18 03:55:25 | MASTER-OAFA | (13h 04m 35.76s , +03d 55m 38.1s) | C | 20 | 17.3 |\n 137906 | 2023-06-18 03:55:43 | MASTER- | (13h 05m 39.18s , +03d 07m 22.9s) | C | 30 | 16.5 |\n 137939 | 2023-06-18 03:56:16 | MASTER-OAFA | (13h 04m 41.86s , +03d 55m 55.6s) | C | 30 | 17.7 |\n 137989 | 2023-06-18 03:56:16 | MASTER-OAFA | (13h 04m 41.86s , +03d 55m 55.6s) | C | 130 | 18.7 | Coadd\n 137961 | 2023-06-18 03:56:33 | MASTER- | (13h 05m 46.50s , +03d 06m 21.0s) | C | 40 | 16.6 |\n 138005 | 2023-06-18 03:57:18 | MASTER-OAFA | (13h 04m 39.28s , +03d 57m 31.2s) | C | 40 | 17.9 |\n 138026 | 2023-06-18 03:57:33 | MASTER- | (13h 05m 39.38s , +03d 05m 15.2s) | C | 50 | 16.7 |\n 138087 | 2023-06-18 03:58:29 | MASTER-OAFA | (13h 04m 39.30s , +03d 55m 36.0s) | C | 60 | 18.2 |\n 138101 | 2023-06-18 03:58:43 | MASTER- | (13h 05m 45.56s , +03d 05m 28.0s) | C | 60 | 17.1 |\n 138188 | 2023-06-18 04:00:00 | MASTER-OAFA | (13h 04m 42.47s , +03d 57m 31.5s) | C | 80 | 18.5 |\n 138303 | 2023-06-18 04:00:00 | MASTER-OAFA | (13h 04m 42.48s , +03d 57m 31.5s) | C | 310 | 19.3 | Coadd\n 138191 | 2023-06-18 04:00:03 | MASTER- | (13h 05m 43.45s , +03d 06m 46.1s) | C | 80 | 17.1 |\n 138300 | 2023-06-18 04:01:43 | MASTER- | (13h 05m 43.55s , +03d 05m 19.1s) | C | 100 | 17.1 |\n 138309 | 2023-06-18 04:01:52 | MASTER-OAFA | (13h 04m 37.09s , +03d 56m 32.8s) | C | 100 | 18.6 |\n 138431 | 2023-06-18 04:03:43 | MASTER- | (13h 05m 45.80s , +03d 06m 22.1s) | C | 120 | 17.1 |\n 138455 | 2023-06-18 04:04:03 | MASTER-OAFA | (13h 04m 36.34s , +03d 57m 30.7s) | C | 130 | 18.7 |\n 138585 | 2023-06-18 04:06:03 | MASTER- | (13h 05m 39.76s , +03d 05m 40.1s) | C | 150 | 17.2 |\n 138632 | 2023-06-18 04:06:44 | MASTER-OAFA | (13h 04m 41.58s , +03d 56m 30.3s) | C | 160 | 18.7 |\n 138812 | 2023-06-18 04:06:44 | MASTER-OAFA | (13h 04m 41.58s , +03d 56m 30.3s) | C | 520 | 19.5 | Coadd\n 138770 | 2023-06-18 04:08:53 | MASTER- | (13h 05m 41.02s , +03d 06m 28.9s) | C | 180 | 17.5 |\n 138833 | 2023-06-18 04:09:55 | MASTER-OAFA | (13h 04m 36.73s , +03d 55m 29.3s) | C | 180 | 18.6 |\n 138970 | 2023-06-18 04:12:12 | MASTER- | (13h 05m 46.13s , +03d 05m 19.2s) | C | 180 | 17.1 |\n 139044 | 2023-06-18 04:13:27 | MASTER-OAFA | (13h 04m 40.92s , +03d 55m 56.5s) | C | 180 | 18.8 |\n 139170 | 2023-06-18 04:15:32 | MASTER- | (13h 05m 41.10s , +03d 04m 04.8s) | C | 180 | 17.1 |\n 139256 | 2023-06-18 04:16:58 | MASTER-OAFA | (13h 04m 38.65s , +03d 57m 19.4s) | C | 180 | 18.6 |\n 139436 | 2023-06-18 04:16:58 | MASTER-OAFA | (13h 04m 38.65s , +03d 57m 19.4s) | C | 540 | 19.3 | Coadd\n 139370 | 2023-06-18 04:18:52 | MASTER- | (13h 05m 47.15s , +03d 04m 20.9s) | C | 180 | 17.1 |\n 139569 | 2023-06-18 04:22:12 | MASTER- | (13h 05m 43.91s , +03d 05m 17.5s) | C | 180 | 17.1 |\n 139650 | 2023-06-18 04:23:32 | MASTER-OAFA | (13h 04m 35.54s , +03d 57m 21.0s) | C | 180 | 18.5 |\n 139844 | 2023-06-18 04:26:47 | MASTER- | (13h 05m 44.00s , +03d 03m 28.8s) | C | 180 | 17.0 |\n 139861 | 2023-06-18 04:27:04 | MASTER-OAFA | (13h 04m 41.82s , +03d 56m 19.1s) | C | 180 | 18.5 |\n 140073 | 2023-06-18 04:30:35 | MASTER-OAFA | (13h 04m 34.53s , +03d 55m 17.3s) | C | 180 | 18.3 |\n 140253 | 2023-06-18 04:30:35 | MASTER-OAFA | (13h 04m 34.53s , +03d 55m 17.3s) | C | 540 | 19.0 | Coadd\n 140185 | 2023-06-18 04:32:28 | MASTER- | (13h 05m 46.27s , +03d 04m 44.6s) | C | 180 | 17.5 |\n 140284 | 2023-06-18 04:34:06 | MASTER-OAFA | (13h 04m 42.09s , +03d 55m 38.6s) | C | 180 | 18.5 |\n 140495 | 2023-06-18 04:37:37 | MASTER-OAFA | (13h 04m 38.02s , +03d 56m 54.9s) | C | 180 | 18.3 |\n 140526 | 2023-06-18 04:38:08 | MASTER- | (13h 05m 41.53s , +03d 03m 36.1s) | C | 180 | 17.4 |\n 140706 | 2023-06-18 04:41:09 | MASTER-OAFA | (13h 04m 37.81s , +03d 55m 31.9s) | C | 180 | 18.1 |\n 140866 | 2023-06-18 04:43:48 | MASTER- | (13h 05m 41.51s , +03d 04m 11.9s) | C | 180 | 17.4 |\n 140917 | 2023-06-18 04:44:40 | MASTER-OAFA | (13h 04m 40.57s , +03d 56m 45.7s) | C | 180 | 17.9 |\n 141128 | 2023-06-18 04:48:11 | MASTER-OAFA | (13h 04m 35.39s , +03d 56m 06.2s) | C | 180 | 17.9 |\n 141206 | 2023-06-18 04:49:29 | MASTER- | (13h 05m 47.82s , +03d 02m 50.2s) | C | 180 | 17.4 |\n 141546 | 2023-06-18 04:55:09 | MASTER- | (13h 05m 41.79s , +03d 01m 24.4s) | C | 180 | 17.5 |\n 141694 | 2023-06-18 04:57:37 | MASTER-OAFA | (13h 04m 33.96s , +03d 57m 01.2s) | C | 180 | 17.7 |\n 141886 | 2023-06-18 05:00:48 | MASTER- | (13h 05m 47.06s , +03d 01m 21.0s) | C | 180 | 17.5 |\n 141906 | 2023-06-18 05:01:08 | MASTER-OAFA | (13h 04m 39.22s , +03d 56m 00.1s) | C | 180 | 17.7 |\n 142225 | 2023-06-18 05:06:27 | MASTER- | (13h 05m 45.21s , +03d 02m 35.5s) | C | 180 | 17.5 |\n 142299 | 2023-06-18 05:07:41 | MASTER-OAFA | (13h 04m 38.75s , +03d 56m 55.5s) | C | 180 | 17.4 |\n 142510 | 2023-06-18 05:11:13 | MASTER-OAFA | (13h 04m 33.53s , +03d 55m 56.0s) | C | 180 | 17.3 |\n 142564 | 2023-06-18 05:12:07 | MASTER- | (13h 05m 45.48s , +03d 00m 24.9s) | C | 180 | 17.4 |\n 142758 | 2023-06-18 05:15:21 | MASTER-OAFA | (13h 04m 39.29s , +03d 55m 56.5s) | C | 180 | 17.0 |\n 142906 | 2023-06-18 05:17:48 | MASTER- | (13h 05m 48.00s , +03d 01m 29.2s) | C | 180 | 17.5 |\n 142970 | 2023-06-18 05:18:52 | MASTER-OAFA | (13h 04m 32.18s , +03d 54m 57.5s) | C | 180 | 16.9 |\n 143246 | 2023-06-18 05:23:29 | MASTER- | (13h 05m 42.33s , +03d 00m 21.8s) | C | 180 | 17.4 |\n 143542 | 2023-06-18 05:28:25 | MASTER-OAFA | (13h 04m 30.92s , +03d 55m 01.5s) | C | 180 | 16.5 |\n 143584 | 2023-06-18 05:29:07 | MASTER- | (13h 05m 43.64s , +03d 00m 56.9s) | C | 180 | 17.5 |\n 143924 | 2023-06-18 05:34:47 | MASTER- | (13h 05m 50.20s , +02d 59m 33.6s) | C | 180 | 17.5 |\n 144264 | 2023-06-18 05:40:26 | MASTER- | (13h 05m 43.38s , +02d 58m 07.1s) | C | 180 | 17.5 |\n 144603 | 2023-06-18 05:46:06 | MASTER- | (13h 05m 51.08s , +02d 57m 49.5s) | C | 180 | 17.5 |\n 144944 | 2023-06-18 05:51:47 | MASTER- | (13h 05m 48.14s , +02d 59m 05.5s) | C | 180 | 17.5 |\n 145284 | 2023-06-18 05:57:27 | MASTER- | (13h 05m 48.59s , +02d 57m 10.3s) | C | 180 | 17.5 |\n 145625 | 2023-06-18 06:03:08 | MASTER- | (13h 05m 51.22s , +02d 58m 24.1s) | C | 180 | 17.5 |\n 145965 | 2023-06-18 06:08:48 | MASTER- | (13h 05m 45.56s , +02d 57m 00.2s) | C | 180 | 17.5 |\n 146306 | 2023-06-18 06:14:29 | MASTER- | (13h 05m 46.01s , +02d 57m 32.2s) | C | 180 | 17.5 |\n 146646 | 2023-06-18 06:20:09 | MASTER- | (13h 05m 52.68s , +02d 56m 09.9s) | C | 180 | 17.5 |\n 146987 | 2023-06-18 06:25:50 | MASTER- | (13h 05m 47.05s , +02d 54m 44.4s) | C | 180 | 17.5 |\n 147329 | 2023-06-18 06:31:31 | MASTER- | (13h 05m 53.66s , +02d 54m 48.1s) | C | 180 | 17.5 |\n 147669 | 2023-06-18 06:37:11 | MASTER- | (13h 05m 52.01s , +02d 55m 24.4s) | C | 180 | 17.5 |\n 148010 | 2023-06-18 06:42:52 | MASTER- | (13h 05m 52.52s , +02d 53m 41.9s) | C | 180 | 17.5 |\n 148350 | 2023-06-18 06:48:32 | MASTER- | (13h 05m 55.13s , +02d 54m 46.8s) | C | 180 | 17.5 |\n 148690 | 2023-06-18 06:54:13 | MASTER- | (13h 05m 49.41s , +02d 53m 36.3s) | C | 180 | 17.4 |\n 149030 | 2023-06-18 06:59:53 | MASTER- | (13h 05m 49.90s , +02d 54m 07.1s) | C | 180 | 17.5 |\n 149156 | 2023-06-18 07:01:58 | MASTER-OAFA | (17h 50m 54.68s , +09d 20m 18.5s) | C | 180 | 18.5 |\n 149370 | 2023-06-18 07:05:32 | MASTER- | (13h 05m 56.65s , +02d 52m 43.3s) | C | 180 | 17.5 |\n 149578 | 2023-06-18 07:09:00 | MASTER-OAFA | (17h 59m 07.21s , +09d 20m 04.0s) | C | 180 | 18.7 |\n 149709 | 2023-06-18 07:11:12 | MASTER- | (13h 05m 51.11s , +02d 51m 14.5s) | C | 180 | 17.4 |\n 150000 | 2023-06-18 07:16:02 | MASTER-OAFA | (17h 50m 59.97s , +09d 19m 17.5s) | C | 180 | 18.6 |\n 150050 | 2023-06-18 07:16:53 | MASTER- | (13h 05m 57.74s , +02d 50m 53.2s) | C | 180 | 17.5 |\n 150390 | 2023-06-18 07:22:33 | MASTER- | (13h 05m 56.09s , +02d 52m 24.1s) | C | 180 | 17.4 |\n 150421 | 2023-06-18 07:23:04 | MASTER-OAFA | (17h 59m 03.08s , +09d 18m 57.4s) | C | 180 | 18.6 |\n 150731 | 2023-06-18 07:28:14 | MASTER- | (13h 05m 56.62s , +02d 50m 23.6s) | C | 180 | 17.5 |\n 151011 | 2023-06-18 07:32:54 | MASTER-OAFA | (17h 46m 00.23s , +07d 25m 15.1s) | C | 180 | 18.4 |\n 151072 | 2023-06-18 07:33:55 | MASTER- | (13h 06m 00.43s , +02d 51m 39.1s) | C | 180 | 17.5 |\n 151223 | 2023-06-18 07:36:25 | MASTER-OAFA | (17h 54m 09.26s , +07d 25m 10.8s) | C | 180 | 18.5 |\n 151413 | 2023-06-18 07:39:35 | MASTER- | (13h 05m 53.80s , +02d 50m 20.4s) | C | 180 | 17.5 |\n 151434 | 2023-06-18 07:39:57 | MASTER-OAFA | (17h 57m 05.16s , +11d 14m 27.7s) | C | 180 | 18.7 |\n 151753 | 2023-06-18 07:45:16 | MASTER- | (13h 05m 55.34s , +02d 50m 53.5s) | C | 180 | 17.2 |\n 152094 | 2023-06-18 07:50:57 | MASTER- | (13h 06m 02.27s , +02d 49m 32.7s) | C | 180 | 16.9 |\n 152117 | 2023-06-18 07:51:20 | MASTER-OAFA | (17h 54m 01.64s , +07d 25m 54.2s) | C | 180 | 18.5 |\n 152434 | 2023-06-18 07:56:36 | MASTER- | (13h 05m 56.73s , +02d 48m 04.8s) | C | 180 | 17.0 |\n 152773 | 2023-06-18 08:02:16 | MASTER- | (13h 06m 02.42s , +02d 48m 09.8s) | C | 180 | 16.6 |\n 153115 | 2023-06-18 08:07:57 | MASTER- | (13h 06m 01.19s , +02d 49m 10.7s) | C | 180 | 16.5 |\n 153454 | 2023-06-18 08:13:37 | MASTER- | (13h 06m 01.70s , +02d 47m 10.0s) | C | 180 | 16.6 |\n 153796 | 2023-06-18 08:19:19 | MASTER- | (13h 06m 04.64s , +02d 48m 23.3s) | C | 180 | 16.3 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg3MDgwNTc1LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.-AKHx7pj4IcRtASncABupHxyBYyc9w7gGyG5NJOb2tA\n\n",
"published": "2023-06-18T09:29:40.138804Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-18T09:29:40.138826Z",
"modified": "2023-06-18T09:29:40.146490Z",
"targets": []
}
]
},
{
"event_id": "S230618s",
"sequences": [
{
"id": 126,
"sequence_number": 1,
"sequence_type": "PRELIMINARY",
"message": {
"id": 351,
"topic": "igwn.gwalert",
"uuid": "4207649e-2d92-4cdd-b8ca-e48f561fd6e8",
"title": "S230618s - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230618s/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230618s/view/"
},
"event": {
"far": 5.37692e-06,
"time": "2023-06-18T09:35:16.859Z",
"group": "Burst",
"search": "BBH",
"area_50": 945.8839381529853,
"area_90": 2996.2783134038664,
"duration": 0.009334,
"pipeline": "CWB",
"properties": {},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "837a67ab90c79edd5536a32934097fab",
"classification": {},
"skymap_version": 0,
"central_frequency": 109.612923
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-06-18T09:36:38Z",
"superevent_id": "S230618s",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-18T09:36:40.112971Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-18T09:36:40.112997Z",
"modified": "2023-06-18T09:36:40.118034Z"
}
},
{
"id": 127,
"sequence_number": 2,
"sequence_type": "PRELIMINARY",
"message": {
"id": 353,
"topic": "igwn.gwalert",
"uuid": "d16a4513-dc79-4084-ba1f-f22c85cb9cf3",
"title": "S230618s - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230618s/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230618s/view/"
},
"event": {
"far": 5.37692e-06,
"time": "2023-06-18T09:35:16.859Z",
"group": "Burst",
"search": "BBH",
"area_50": 945.8839381529853,
"area_90": 2996.2783134038664,
"duration": 0.009334,
"pipeline": "CWB",
"properties": {},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "837a67ab90c79edd5536a32934097fab",
"classification": {},
"skymap_version": 0,
"central_frequency": 109.612923
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-06-18T09:41:14Z",
"superevent_id": "S230618s",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-18T09:41:15.551935Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-18T09:41:15.551963Z",
"modified": "2023-06-18T09:41:15.556997Z"
}
}
],
"references": [
{
"id": 376,
"topic": "gcn.circular",
"uuid": "5976e2ca-aaf6-4f90-bf49-10a78306889c",
"title": "LIGO/Virgo S230618s: Global MASTER-Net observations report",
"submitter": "Hop gcn.circular",
"authors": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"data": {
"date": "23/06/19 00:36:41 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "34010",
"subject": "LIGO/Virgo S230618s: Global MASTER-Net observations report"
},
"message_text": "V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko,\nG.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin\n(Lomonosov Moscow State University, SAI, Physics Department),\n\nR. Podesta, C.Lopez, F. Podesta, C.Francile\n(Observatorio Astronomico Felix Aguilar OAFA),\n\nR. Rebolo, M. Serra\n(The Instituto de Astrofisica de Canarias),\n\nD. Buckley\n(South African Astronomical Observatory),\n\nO.A. Gres, N.M. Budnev\n(Irkutsk State University, API),\n\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez\n(INAOE, Guillermo Haro Astrophysics Observatory),\n\nA. Tlatov, D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nA. Gabovich, V.Yurkov\n(Blagoveschensk Educational State University)\n\n\nMASTER-OAFA robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Argentina (OAFA observatory of San Juan National University) started inspect of the LIGO/Virgo S230618s errorbox 53365 sec after notice time and 53473 sec after trigger time at 2023-06-19 00:26:29 UT, with upper limit up to 12.2 mag. The observations began at zenith distance = 73 deg. The sun altitude is -34.7 deg.\n\nThe galactic latitude b = 9 deg., longitude l = 259 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/ligo_1.php?id\u0012106\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 729 | 2023-06-18 09:45:54 | MASTER- | (17h 51m 49.23s , +08d 33m 20.4s) | C | 180 | 18.5 |\n 1069 | 2023-06-18 09:51:35 | MASTER- | (17h 59m 55.36s , +08d 32m 17.8s) | C | 180 | 18.6 |\n 1411 | 2023-06-18 09:57:17 | MASTER- | (17h 51m 47.13s , +08d 30m 60.0s) | C | 180 | 18.5 |\n 1758 | 2023-06-18 10:03:04 | MASTER- | (17h 59m 59.19s , +08d 31m 10.8s) | C | 180 | 18.5 |\n 2649 | 2023-06-18 10:17:54 | MASTER- | (17h 57m 53.00s , +10d 25m 32.8s) | C | 180 | 18.5 |\n 3330 | 2023-06-18 10:29:16 | MASTER- | (18h 06m 02.32s , +10d 23m 17.9s) | C | 180 | 18.3 |\n 4221 | 2023-06-18 10:44:06 | MASTER- | (17h 57m 57.43s , +10d 21m 56.4s) | C | 180 | 18.3 |\n 4904 | 2023-06-18 10:55:29 | MASTER- | (18h 06m 03.59s , +10d 22m 18.7s) | C | 180 | 18.0 |\n 6681 | 2023-06-18 11:25:06 | MASTER- | (17h 47m 06.59s , +06d 29m 48.5s) | C | 180 | 16.5 |\n 53564 | 2023-06-19 00:26:29 | MASTER-OAFA | (08h 17m 30.62s , -17d 12m 38.4s) | C | 180 | 12.3 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg3MTM1MDA2LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.CAOzrg-jNKCoZsBcEggLN8aRRqdIwlTNTWxfj-QAE5U\n\n",
"published": "2023-06-19T00:36:52.408580Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-19T00:36:52.408600Z",
"modified": "2023-06-19T00:36:52.416396Z",
"targets": []
}
]
},
{
"event_id": "S230618y",
"sequences": [
{
"id": 128,
"sequence_number": 1,
"sequence_type": "PRELIMINARY",
"message": {
"id": 354,
"topic": "igwn.gwalert",
"uuid": "64054ca9-1535-4244-85da-3e7ef459e668",
"title": "S230618y - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230618y/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230618y/view/"
},
"event": {
"far": 3.73921619768127e-06,
"time": "2023-06-18T10:25:50.011Z",
"group": "CBC",
"search": "AllSky",
"area_50": 1375.1826376784973,
"area_90": 5536.820177458068,
"duration": null,
"pipeline": "gstlal",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.04264138160689884,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "7136f7dbd19df3c5319a68fcdc18e282",
"classification": {
"BBH": 0.36622047413353476,
"BNS": 2.3954060160569974e-15,
"NSBH": 1.8899155916159914e-13,
"Terrestrial": 0.6337795258662738
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-06-18T10:26:11Z",
"superevent_id": "S230618y",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-18T10:26:12.072265Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-18T10:26:12.072290Z",
"modified": "2023-06-18T10:26:12.078490Z"
}
},
{
"id": 129,
"sequence_number": 2,
"sequence_type": "PRELIMINARY",
"message": {
"id": 356,
"topic": "igwn.gwalert",
"uuid": "29aa5008-b647-4f23-a631-18d8d4ef8b43",
"title": "S230618y - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230618y/files/bayestar.multiorder.fits,1",
"gracedb": "https://gracedb.ligo.org/superevents/S230618y/view/"
},
"event": {
"far": 1.473581595615358e-05,
"time": "2023-06-18T10:25:50.013Z",
"group": "CBC",
"search": "AllSky",
"area_50": 1258.1011741715395,
"area_90": 5325.318178864855,
"duration": null,
"pipeline": "gstlal",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.04649852446404171,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "680a4ed4d61ed5bd787e669fc9890ca1",
"classification": {
"BBH": 0.1284841098745418,
"BNS": 5.48904419931699e-15,
"NSBH": 1.2944810755842118e-10,
"Terrestrial": 0.8715158899960046
},
"skymap_version": 1,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-06-18T10:30:45Z",
"superevent_id": "S230618y",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-18T10:30:46.782556Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-18T10:30:46.782598Z",
"modified": "2023-06-18T10:30:46.787540Z"
}
}
],
"references": [
{
"id": 377,
"topic": "gcn.circular",
"uuid": "494091c6-2142-495b-be59-f0d0844dae79",
"title": "LIGO/Virgo S230618y: Global MASTER-Net observations report",
"submitter": "Hop gcn.circular",
"authors": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"data": {
"date": "23/06/19 00:36:47 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "34011",
"subject": "LIGO/Virgo S230618y: Global MASTER-Net observations report"
},
"message_text": "V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko,\nG.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin\n(Lomonosov Moscow State University, SAI, Physics Department),\n\nR. Podesta, C.Lopez, F. Podesta, C.Francile\n(Observatorio Astronomico Felix Aguilar OAFA),\n\nR. Rebolo, M. Serra\n(The Instituto de Astrofisica de Canarias),\n\nD. Buckley\n(South African Astronomical Observatory),\n\nO.A. Gres, N.M. Budnev\n(Irkutsk State University, API),\n\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez\n(INAOE, Guillermo Haro Astrophysics Observatory),\n\nA. Tlatov, D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nA. Gabovich, V.Yurkov\n(Blagoveschensk Educational State University)\n\n\nMASTER-OAFA robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Argentina (OAFA observatory of San Juan National University) started inspect of the LIGO/Virgo S230618y errorbox 48813 sec after notice time and 48871 sec after trigger time at 2023-06-19 00:00:21 UT, with upper limit up to 14.4 mag. The observations began at zenith distance = 71 deg. The sun altitude is -29.2 deg.\n\nThe galactic latitude b = 28 deg., longitude l = 268 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/ligo_1.php?id\u0012110\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 296 | 2023-06-18 10:29:16 | MASTER- | (18h 06m 02.32s , +10d 23m 17.9s) | C | 180 | 18.3 |\n 1187 | 2023-06-18 10:44:06 | MASTER- | (17h 57m 57.43s , +10d 21m 56.4s) | C | 180 | 18.3 |\n 1870 | 2023-06-18 10:55:29 | MASTER- | (18h 06m 03.59s , +10d 22m 18.7s) | C | 180 | 18.0 |\n 3647 | 2023-06-18 11:25:06 | MASTER- | (17h 47m 06.59s , +06d 29m 48.5s) | C | 180 | 16.5 |\n 48962 | 2023-06-19 00:00:21 | MASTER-OAFA | (08h 33m 56.94s , -03d 29m 30.0s) | C | 180 | 14.4 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg3MTM1MDEzLCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.pys25C-hWUWH0t0aGuymVLTGqsVuku_Gz8jm6HZ5weA\n\n",
"published": "2023-06-19T00:36:58.449607Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-19T00:36:58.449645Z",
"modified": "2023-06-19T00:36:58.454619Z",
"targets": []
}
]
},
{
"event_id": "S230618ae",
"sequences": [
{
"id": 130,
"sequence_number": 1,
"sequence_type": "PRELIMINARY",
"message": {
"id": 357,
"topic": "igwn.gwalert",
"uuid": "aea5f3e7-4d9b-4841-ae4b-788c46f4d890",
"title": "S230618ae - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230618ae/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230618ae/view/"
},
"event": {
"far": 9.483325e-06,
"time": "2023-06-18T11:23:30.186Z",
"group": "CBC",
"search": "AllSky",
"area_50": 519.5227663857124,
"area_90": 2007.5903993451113,
"duration": null,
"pipeline": "MBTA",
"properties": {
"HasNS": 1.0,
"HasMassGap": 0.5387966965207069,
"HasRemnant": 0.009593694494556836
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "2ba9a75642e537af82b4c1f91653f38f",
"classification": {
"BBH": 0.0,
"BNS": 0.001283943,
"NSBH": 0.000497719,
"Terrestrial": 0.998218338
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-06-18T11:23:57Z",
"superevent_id": "S230618ae",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-18T11:23:58.449150Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-18T11:23:58.449179Z",
"modified": "2023-06-18T11:23:58.454953Z"
}
},
{
"id": 131,
"sequence_number": 2,
"sequence_type": "PRELIMINARY",
"message": {
"id": 359,
"topic": "igwn.gwalert",
"uuid": "cad29983-0006-4ab3-b80c-24b433c02c82",
"title": "S230618ae - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230618ae/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230618ae/view/"
},
"event": {
"far": 9.483325e-06,
"time": "2023-06-18T11:23:30.186Z",
"group": "CBC",
"search": "AllSky",
"area_50": 519.5227663857124,
"area_90": 2007.5903993451113,
"duration": null,
"pipeline": "MBTA",
"properties": {
"HasNS": 1.0,
"HasMassGap": 0.5387966965207069,
"HasRemnant": 0.009593694494556836
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "2ba9a75642e537af82b4c1f91653f38f",
"classification": {
"BBH": 0.0,
"BNS": 0.001283943,
"NSBH": 0.000497719,
"Terrestrial": 0.998218338
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-06-18T11:28:32Z",
"superevent_id": "S230618ae",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-18T11:28:33.083688Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-18T11:28:33.083714Z",
"modified": "2023-06-18T11:28:33.088741Z"
}
}
],
"references": []
},
{
"event_id": "S230618aq",
"sequences": [
{
"id": 132,
"sequence_number": 1,
"sequence_type": "PRELIMINARY",
"message": {
"id": 360,
"topic": "igwn.gwalert",
"uuid": "35e2ba60-9c13-45f9-b2ce-780bbd7abf67",
"title": "S230618aq - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230618aq/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230618aq/view/"
},
"event": {
"far": 1.62559e-05,
"time": "2023-06-18T13:20:48.847Z",
"group": "Burst",
"search": "BBH",
"area_50": 125.89404678167506,
"area_90": 1316.851729336321,
"duration": 0.014874,
"pipeline": "CWB",
"properties": {},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "41ae6ed6b4a9e62c1dc130f86b0abb50",
"classification": {},
"skymap_version": 0,
"central_frequency": 77.354401
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-06-18T13:22:12Z",
"superevent_id": "S230618aq",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-18T13:22:13.525552Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-18T13:22:13.525578Z",
"modified": "2023-06-18T13:22:13.532108Z"
}
},
{
"id": 133,
"sequence_number": 2,
"sequence_type": "PRELIMINARY",
"message": {
"id": 362,
"topic": "igwn.gwalert",
"uuid": "59dd0c29-194e-4f97-928f-8bfb1d2b9b45",
"title": "S230618aq - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230618aq/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230618aq/view/"
},
"event": {
"far": 1.62559e-05,
"time": "2023-06-18T13:20:48.847Z",
"group": "Burst",
"search": "BBH",
"area_50": 125.89404678167506,
"area_90": 1316.851729336321,
"duration": 0.014874,
"pipeline": "CWB",
"properties": {},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "41ae6ed6b4a9e62c1dc130f86b0abb50",
"classification": {},
"skymap_version": 0,
"central_frequency": 77.354401
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-06-18T13:26:46Z",
"superevent_id": "S230618aq",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-18T13:26:46.964412Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-18T13:26:46.964439Z",
"modified": "2023-06-18T13:26:46.969392Z"
}
}
],
"references": []
},
{
"event_id": "S230618at",
"sequences": [
{
"id": 134,
"sequence_number": 1,
"sequence_type": "PRELIMINARY",
"message": {
"id": 366,
"topic": "igwn.gwalert",
"uuid": "8839a0ce-1228-4cd2-b422-324572e048cb",
"title": "S230618at - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230618at/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230618at/view/"
},
"event": {
"far": 8.453863098364614e-06,
"time": "2023-06-18T17:57:42.604Z",
"group": "CBC",
"search": "AllSky",
"area_50": 378.3640664317593,
"area_90": 1398.8926831557126,
"duration": null,
"pipeline": "pycbc",
"properties": {
"HasNS": 0.9185910087815858,
"HasMassGap": 0.00670076726342711,
"HasRemnant": 0.45960135652168127
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "545095ae9d8fa51d33162ce05c653ce9",
"classification": {
"BBH": 8.485231054602197e-05,
"BNS": 0.0,
"NSBH": 0.0022815398331139263,
"Terrestrial": 0.99763360785634
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-06-18T17:58:09Z",
"superevent_id": "S230618at",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-18T17:58:10.738488Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-18T17:58:10.738516Z",
"modified": "2023-06-18T17:58:10.744597Z"
}
},
{
"id": 135,
"sequence_number": 2,
"sequence_type": "PRELIMINARY",
"message": {
"id": 367,
"topic": "igwn.gwalert",
"uuid": "6ec47249-df4d-483d-a209-8b793a10e9d8",
"title": "S230618at - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230618at/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230618at/view/"
},
"event": {
"far": 8.453863098364614e-06,
"time": "2023-06-18T17:57:42.604Z",
"group": "CBC",
"search": "AllSky",
"area_50": 378.3640664317593,
"area_90": 1398.8926831557126,
"duration": null,
"pipeline": "pycbc",
"properties": {
"HasNS": 0.9185910087815858,
"HasMassGap": 0.00670076726342711,
"HasRemnant": 0.45960135652168127
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "545095ae9d8fa51d33162ce05c653ce9",
"classification": {
"BBH": 8.485231054602197e-05,
"BNS": 0.0,
"NSBH": 0.0022815398331139263,
"Terrestrial": 0.99763360785634
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-06-18T18:02:46Z",
"superevent_id": "S230618at",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-18T18:02:47.340192Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-18T18:02:47.340219Z",
"modified": "2023-06-18T18:02:47.345514Z"
}
}
],
"references": []
},
{
"event_id": "S230618az",
"sequences": [
{
"id": 136,
"sequence_number": 1,
"sequence_type": "PRELIMINARY",
"message": {
"id": 369,
"topic": "igwn.gwalert",
"uuid": "e95ce161-91ba-4687-9bf6-626908fd1bd4",
"title": "S230618az - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230618az/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230618az/view/"
},
"event": {
"far": 1.423938557922301e-05,
"time": "2023-06-18T19:08:59.339Z",
"group": "CBC",
"search": "AllSky",
"area_50": 372.06936409267547,
"area_90": 1384.2050443645169,
"duration": null,
"pipeline": "pycbc",
"properties": {
"HasNS": 1.0,
"HasMassGap": 0.022579365079365078,
"HasRemnant": 1.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "0d51a01cf39c6559602fca5f51da8881",
"classification": {
"BBH": 0.0,
"BNS": 0.0021481712895470586,
"NSBH": 0.0,
"Terrestrial": 0.997851828710453
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-06-18T19:09:30Z",
"superevent_id": "S230618az",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-18T19:09:31.977301Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-18T19:09:31.977327Z",
"modified": "2023-06-18T19:09:31.984255Z"
}
},
{
"id": 137,
"sequence_number": 2,
"sequence_type": "PRELIMINARY",
"message": {
"id": 370,
"topic": "igwn.gwalert",
"uuid": "975a1ec4-9ffb-42fe-8785-eca349fb4707",
"title": "S230618az - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230618az/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230618az/view/"
},
"event": {
"far": 1.423938557922301e-05,
"time": "2023-06-18T19:08:59.339Z",
"group": "CBC",
"search": "AllSky",
"area_50": 372.06936409267547,
"area_90": 1384.2050443645169,
"duration": null,
"pipeline": "pycbc",
"properties": {
"HasNS": 1.0,
"HasMassGap": 0.022579365079365078,
"HasRemnant": 1.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "0d51a01cf39c6559602fca5f51da8881",
"classification": {
"BBH": 0.0,
"BNS": 0.0021481712895470586,
"NSBH": 0.0,
"Terrestrial": 0.997851828710453
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-06-18T19:14:05Z",
"superevent_id": "S230618az",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-18T19:14:07.642285Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-18T19:14:07.642326Z",
"modified": "2023-06-18T19:14:07.647722Z"
}
}
],
"references": []
},
{
"event_id": "S230618ba",
"sequences": [
{
"id": 138,
"sequence_number": 1,
"sequence_type": "PRELIMINARY",
"message": {
"id": 372,
"topic": "igwn.gwalert",
"uuid": "0bc44ccd-53c7-4c33-a731-0d584ca4a5f1",
"title": "S230618ba - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230618ba/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230618ba/view/"
},
"event": {
"far": 2.571665618233965e-06,
"time": "2023-06-18T19:30:05.728Z",
"group": "CBC",
"search": "AllSky",
"area_50": 4781.455896768019,
"area_90": 14677.567267452889,
"duration": null,
"pipeline": "spiir",
"properties": {
"HasNS": 0.7284305504633832,
"HasMassGap": 0.5248631591969641,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "0aae6151871e7480fc5c7ede23af709f",
"classification": {
"BBH": 0.14220945248723124,
"BNS": 0.0,
"NSBH": 0.2906198346153164,
"Terrestrial": 0.5671707128974524
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-06-18T19:30:29Z",
"superevent_id": "S230618ba",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-18T19:30:30.635600Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-18T19:30:30.635625Z",
"modified": "2023-06-18T19:30:30.640708Z"
}
},
{
"id": 139,
"sequence_number": 2,
"sequence_type": "PRELIMINARY",
"message": {
"id": 373,
"topic": "igwn.gwalert",
"uuid": "bb97c7d1-824f-4abc-9756-370625ba84ba",
"title": "S230618ba - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230618ba/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230618ba/view/"
},
"event": {
"far": 2.571665618233965e-06,
"time": "2023-06-18T19:30:05.728Z",
"group": "CBC",
"search": "AllSky",
"area_50": 4781.455896768019,
"area_90": 14677.567267452889,
"duration": null,
"pipeline": "spiir",
"properties": {
"HasNS": 0.7284305504633832,
"HasMassGap": 0.5248631591969641,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "0aae6151871e7480fc5c7ede23af709f",
"classification": {
"BBH": 0.14220945248723124,
"BNS": 0.0,
"NSBH": 0.2906198346153164,
"Terrestrial": 0.5671707128974524
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-06-18T19:35:03Z",
"superevent_id": "S230618ba",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-18T19:35:05.321715Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-18T19:35:05.321742Z",
"modified": "2023-06-18T19:35:05.326990Z"
}
}
],
"references": []
},
{
"event_id": "S230618a",
"sequences": [],
"references": [
{
"id": 384,
"topic": "gcn.circular",
"uuid": "fe6345db-2567-4e3f-ba3a-ed080a76ba9e",
"title": "LIGO/Virgo S230618at: Global MASTER-Net observations report",
"submitter": "Hop gcn.circular",
"authors": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"data": {
"date": "23/06/19 02:52:40 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "34016",
"subject": "LIGO/Virgo S230618at: Global MASTER-Net observations report"
},
"message_text": "V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko,\nG.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin\n(Lomonosov Moscow State University, SAI, Physics Department),\n\nR. Podesta, C.Lopez, F. Podesta, C.Francile\n(Observatorio Astronomico Felix Aguilar OAFA),\n\nR. Rebolo, M. Serra\n(The Instituto de Astrofisica de Canarias),\n\nD. Buckley\n(South African Astronomical Observatory),\n\nO.A. Gres, N.M. Budnev\n(Irkutsk State University, API),\n\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez\n(INAOE, Guillermo Haro Astrophysics Observatory),\n\nA. Tlatov, D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nA. Gabovich, V.Yurkov\n(Blagoveschensk Educational State University)\n\n\nMASTER-OAFA robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Argentina (OAFA observatory of San Juan National University) started inspect of the LIGO/Virgo S230618at errorbox 31514 sec after notice time and 31657 sec after trigger time at 2023-06-19 02:45:19 UT, with upper limit up to 12.8 mag. The observations began at zenith distance = 37 deg. The sun altitude is -64.4 deg.\n\nThe galactic latitude b = 3 deg., longitude l = 341 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/ligo_1.php?id\u0012122\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 31668 | 2023-06-19 02:45:19 | MASTER-OAFA | (18h 19m 06.67s , -59d 07m 27.1s) | C | 20 | 12.8 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg3MTQzMTY1LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9._JrW9M_qcIhuzkZR98fTvY2WXp_KjI-m6fVhLM0WBh4\n\n",
"published": "2023-06-19T02:52:50.776565Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-19T02:52:50.776599Z",
"modified": "2023-06-19T02:52:50.787098Z",
"targets": []
},
{
"id": 380,
"topic": "gcn.circular",
"uuid": "cd3911da-8d7d-43fc-96ee-d11abe1cf0e2",
"title": "LIGO/Virgo S230618az: Global MASTER-Net observations report",
"submitter": "Hop gcn.circular",
"authors": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"data": {
"date": "23/06/19 01:02:45 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "34014",
"subject": "LIGO/Virgo S230618az: Global MASTER-Net observations report"
},
"message_text": "V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko,\nG.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin\n(Lomonosov Moscow State University, SAI, Physics Department),\n\nR. Podesta, C.Lopez, F. Podesta, C.Francile\n(Observatorio Astronomico Felix Aguilar OAFA),\n\nR. Rebolo, M. Serra\n(The Instituto de Astrofisica de Canarias),\n\nD. Buckley\n(South African Astronomical Observatory),\n\nO.A. Gres, N.M. Budnev\n(Irkutsk State University, API),\n\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez\n(INAOE, Guillermo Haro Astrophysics Observatory),\n\nA. Tlatov, D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nA. Gabovich, V.Yurkov\n(Blagoveschensk Educational State University)\n\n\nMASTER-OAFA robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Argentina (OAFA observatory of San Juan National University) started inspect of the LIGO/Virgo S230618az errorbox 19624 sec after notice time and 19708 sec after trigger time at 2023-06-19 00:37:27 UT, with upper limit up to 16.1 mag. The observations began at zenith distance = 67 deg. The sun altitude is -37.1 deg.\n\nThe galactic latitude b = 2 deg., longitude l = 159 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/ligo_1.php?id\u0012126\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 19798 | 2023-06-19 00:37:27 | MASTER-OAFA | (18h 26m 31.82s , -10d 43m 09.2s) | C | 180 | 16.1 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg3MTM2NTcwLCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.aimvgctHR6JyQ-BsO8m9tZl9xy4hJ9qBN2VggZ-tV3E\n\n",
"published": "2023-06-19T01:02:56.340311Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-19T01:02:56.340345Z",
"modified": "2023-06-19T01:02:56.345473Z",
"targets": []
},
{
"id": 379,
"topic": "gcn.circular",
"uuid": "8d3a1fd8-20bb-41b0-86af-e9ef238fd773",
"title": "LIGO/Virgo S230618ae: Global MASTER-Net observations report",
"submitter": "Hop gcn.circular",
"authors": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"data": {
"date": "23/06/19 01:02:39 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "34013",
"subject": "LIGO/Virgo S230618ae: Global MASTER-Net observations report"
},
"message_text": "V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko,\nG.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin\n(Lomonosov Moscow State University, SAI, Physics Department),\n\nR. Podesta, C.Lopez, F. Podesta, C.Francile\n(Observatorio Astronomico Felix Aguilar OAFA),\n\nR. Rebolo, M. Serra\n(The Instituto de Astrofisica de Canarias),\n\nD. Buckley\n(South African Astronomical Observatory),\n\nO.A. Gres, N.M. Budnev\n(Irkutsk State University, API),\n\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez\n(INAOE, Guillermo Haro Astrophysics Observatory),\n\nA. Tlatov, D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nA. Gabovich, V.Yurkov\n(Blagoveschensk Educational State University)\n\n\nMASTER-OAFA robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Argentina (OAFA observatory of San Juan National University) started inspect of the LIGO/Virgo S230618ae errorbox 47788 sec after notice time and 47848 sec after trigger time at 2023-06-19 00:40:58 UT, with upper limit up to 14.9 mag. The observations began at zenith distance = 68 deg. The sun altitude is -37.8 deg.\n\nThe galactic latitude b = 27 deg., longitude l = 278 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/ligo_1.php?id\u0012114\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 47939 | 2023-06-19 00:40:58 | MASTER-OAFA | (18h 34m 40.18s , -10d 42m 28.1s) | C | 180 | 14.9 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg3MTM2NTY0LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.9qiVcCKw5N0p8T4Mqe8qTazS7aPbUS8oknrXZge1ios\n\n",
"published": "2023-06-19T01:02:50.301853Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-19T01:02:50.301891Z",
"modified": "2023-06-19T01:02:50.309287Z",
"targets": []
},
{
"id": 378,
"topic": "gcn.circular",
"uuid": "d53943d2-9060-432c-8b3b-0a53895de862",
"title": "LIGO/Virgo S230618aq: Global MASTER-Net observations report",
"submitter": "Hop gcn.circular",
"authors": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"data": {
"date": "23/06/19 00:37:31 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "34012",
"subject": "LIGO/Virgo S230618aq: Global MASTER-Net observations report"
},
"message_text": "V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko,\nG.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin\n(Lomonosov Moscow State University, SAI, Physics Department),\n\nR. Podesta, C.Lopez, F. Podesta, C.Francile\n(Observatorio Astronomico Felix Aguilar OAFA),\n\nR. Rebolo, M. Serra\n(The Instituto de Astrofisica de Canarias),\n\nD. Buckley\n(South African Astronomical Observatory),\n\nO.A. Gres, N.M. Budnev\n(Irkutsk State University, API),\n\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez\n(INAOE, Guillermo Haro Astrophysics Observatory),\n\nA. Tlatov, D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nA. Gabovich, V.Yurkov\n(Blagoveschensk Educational State University)\n\n\nMASTER-OAFA robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Argentina (OAFA observatory of San Juan National University) started inspect of the LIGO/Virgo S230618aq errorbox 39843 sec after notice time and 39941 sec after trigger time at 2023-06-19 00:26:29 UT, with upper limit up to 12.2 mag. The observations began at zenith distance = 73 deg. The sun altitude is -34.7 deg.\n\nThe galactic latitude b = 13 deg., longitude l = 31 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/ligo_1.php?id\u0012120\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 40032 | 2023-06-19 00:26:29 | MASTER-OAFA | (08h 17m 30.62s , -17d 12m 38.4s) | C | 180 | 12.3 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg3MTM1MDU0LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.v3aQkfOQaHPeclKoWumQwu3sqk-P_N2LKE58PI4Mzbg\n\n",
"published": "2023-06-19T00:37:38.530814Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-19T00:37:38.530835Z",
"modified": "2023-06-19T00:37:38.535844Z",
"targets": []
}
]
},
{
"event_id": "S230618b",
"sequences": [],
"references": [
{
"id": 381,
"topic": "gcn.circular",
"uuid": "7c884d75-43ea-402d-91fa-0650b81bf7d6",
"title": "LIGO/Virgo S230618ba: Global MASTER-Net observations report",
"submitter": "Hop gcn.circular",
"authors": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"data": {
"date": "23/06/19 01:02:54 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "34015",
"subject": "LIGO/Virgo S230618ba: Global MASTER-Net observations report"
},
"message_text": "V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko,\nG.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin\n(Lomonosov Moscow State University, SAI, Physics Department),\n\nR. Podesta, C.Lopez, F. Podesta, C.Francile\n(Observatorio Astronomico Felix Aguilar OAFA),\n\nR. Rebolo, M. Serra\n(The Instituto de Astrofisica de Canarias),\n\nD. Buckley\n(South African Astronomical Observatory),\n\nO.A. Gres, N.M. Budnev\n(Irkutsk State University, API),\n\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez\n(INAOE, Guillermo Haro Astrophysics Observatory),\n\nA. Tlatov, D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nA. Gabovich, V.Yurkov\n(Blagoveschensk Educational State University)\n\n\nMASTER-OAFA robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Argentina (OAFA observatory of San Juan National University) started inspect of the LIGO/Virgo S230618ba errorbox 18380 sec after notice time and 18442 sec after trigger time at 2023-06-19 00:37:27 UT, with upper limit up to 16.1 mag. The observations began at zenith distance = 67 deg. The sun altitude is -37.1 deg.\n\nThe galactic latitude b = -24 deg., longitude l = 15 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/ligo_1.php?id\u0012130\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 18532 | 2023-06-19 00:37:27 | MASTER-OAFA | (18h 26m 31.82s , -10d 43m 09.2s) | C | 180 | 16.1 |\n 18744 | 2023-06-19 00:40:58 | MASTER-OAFA | (18h 34m 40.18s , -10d 42m 28.1s) | C | 180 | 14.9 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg3MTM2NTc1LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.YCqm1LRRVq1retlg2NwSsLoLjuEWN9hvqmqQbS_FPI8\n\n",
"published": "2023-06-19T01:02:59.371960Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-19T01:02:59.371977Z",
"modified": "2023-06-19T01:02:59.377010Z",
"targets": []
}
]
},
{
"event_id": "S230619e",
"sequences": [
{
"id": 140,
"sequence_number": 1,
"sequence_type": "PRELIMINARY",
"message": {
"id": 382,
"topic": "igwn.gwalert",
"uuid": "e04aa605-c8b3-4914-878a-dffdca2115ee",
"title": "S230619e - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230619e/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230619e/view/"
},
"event": {
"far": 2.03468e-05,
"time": "2023-06-19T02:43:17.621Z",
"group": "Burst",
"search": "BBH",
"area_50": 1450.2994189248966,
"area_90": 4674.026310180989,
"duration": 0.037724,
"pipeline": "CWB",
"properties": {},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "9075ea62cb7077d165f2d212ba947384",
"classification": {},
"skymap_version": 0,
"central_frequency": 29.614994
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-06-19T02:44:14Z",
"superevent_id": "S230619e",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-19T02:44:15.031192Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-19T02:44:15.031221Z",
"modified": "2023-06-19T02:44:15.040533Z"
}
},
{
"id": 141,
"sequence_number": 2,
"sequence_type": "PRELIMINARY",
"message": {
"id": 383,
"topic": "igwn.gwalert",
"uuid": "f6bb0dda-e581-4394-a69b-ca01c50f3336",
"title": "S230619e - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230619e/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230619e/view/"
},
"event": {
"far": 2.03468e-05,
"time": "2023-06-19T02:43:17.621Z",
"group": "Burst",
"search": "BBH",
"area_50": 1450.2994189248966,
"area_90": 4674.026310180989,
"duration": 0.037724,
"pipeline": "CWB",
"properties": {},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "9075ea62cb7077d165f2d212ba947384",
"classification": {},
"skymap_version": 0,
"central_frequency": 29.614994
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-06-19T02:48:48Z",
"superevent_id": "S230619e",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-19T02:48:49.850129Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-19T02:48:49.850171Z",
"modified": "2023-06-19T02:48:49.855612Z"
}
}
],
"references": [
{
"id": 385,
"topic": "gcn.circular",
"uuid": "184045a3-4cd2-4cf5-92ea-78964a136b90",
"title": "LIGO/Virgo S230619e: Global MASTER-Net observations report",
"submitter": "Hop gcn.circular",
"authors": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"data": {
"date": "23/06/19 02:52:53 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "34017",
"subject": "LIGO/Virgo S230619e: Global MASTER-Net observations report"
},
"message_text": "V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko,\nG.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin\n(Lomonosov Moscow State University, SAI, Physics Department),\n\nR. Podesta, C.Lopez, F. Podesta, C.Francile\n(Observatorio Astronomico Felix Aguilar OAFA),\n\nR. Rebolo, M. Serra\n(The Instituto de Astrofisica de Canarias),\n\nD. Buckley\n(South African Astronomical Observatory),\n\nO.A. Gres, N.M. Budnev\n(Irkutsk State University, API),\n\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez\n(INAOE, Guillermo Haro Astrophysics Observatory),\n\nA. Tlatov, D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nA. Gabovich, V.Yurkov\n(Blagoveschensk Educational State University)\n\n\nMASTER-OAFA robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Argentina (OAFA observatory of San Juan National University) started inspect of the LIGO/Virgo S230619e errorbox 45 sec after notice time and 122 sec after trigger time at 2023-06-19 02:45:19 UT, with upper limit up to 12.8 mag. The observations began at zenith distance = 37 deg. The sun altitude is -64.4 deg.\n\nThe galactic latitude b = -20 deg., longitude l = 335 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/ligo_1.php?id\u0012136\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 133 | 2023-06-19 02:45:19 | MASTER-OAFA | (18h 19m 06.67s , -59d 07m 27.1s) | C | 20 | 12.8 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg3MTQzMTc1LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.luNGnoC7wrs_EozVSOXUnN5b99zTqR68xxBQUjYjL1A\n\n",
"published": "2023-06-19T02:52:58.882160Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-19T02:52:58.882195Z",
"modified": "2023-06-19T02:52:58.887440Z",
"targets": []
}
]
},
{
"event_id": "S230619i",
"sequences": [
{
"id": 142,
"sequence_number": 1,
"sequence_type": "PRELIMINARY",
"message": {
"id": 387,
"topic": "igwn.gwalert",
"uuid": "233c2dd3-273a-4a50-87ea-ebbc6bf42153",
"title": "S230619i - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230619i/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230619i/view/"
},
"event": {
"far": 4.143149961654957e-06,
"time": "2023-06-19T03:33:01.769Z",
"group": "CBC",
"search": "AllSky",
"area_50": 518.6834727405012,
"area_90": 2241.753326359027,
"duration": null,
"pipeline": "pycbc",
"properties": {
"HasNS": 1.0,
"HasMassGap": 0.5319099878187807,
"HasRemnant": 0.005377264275187395
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "aeea58892645358287646ff58f25b25b",
"classification": {
"BBH": 0.0,
"BNS": 0.007216939634928987,
"NSBH": 0.001338963471712247,
"Terrestrial": 0.9914440968933588
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-06-19T03:33:30Z",
"superevent_id": "S230619i",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-19T03:33:31.962332Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-19T03:33:31.962382Z",
"modified": "2023-06-19T03:33:31.969954Z"
}
},
{
"id": 143,
"sequence_number": 2,
"sequence_type": "PRELIMINARY",
"message": {
"id": 388,
"topic": "igwn.gwalert",
"uuid": "cd9ee74d-79d8-4280-874e-854f73a3b9f6",
"title": "S230619i - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230619i/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230619i/view/"
},
"event": {
"far": 4.143149961654957e-06,
"time": "2023-06-19T03:33:01.769Z",
"group": "CBC",
"search": "AllSky",
"area_50": 518.6834727405012,
"area_90": 2241.753326359027,
"duration": null,
"pipeline": "pycbc",
"properties": {
"HasNS": 1.0,
"HasMassGap": 0.5319099878187807,
"HasRemnant": 0.005377264275187395
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "aeea58892645358287646ff58f25b25b",
"classification": {
"BBH": 0.0,
"BNS": 0.007216939634928987,
"NSBH": 0.001338963471712247,
"Terrestrial": 0.9914440968933588
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-06-19T03:38:05Z",
"superevent_id": "S230619i",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-19T03:38:06.669233Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-19T03:38:06.669260Z",
"modified": "2023-06-19T03:38:06.674474Z"
}
}
],
"references": [
{
"id": 398,
"topic": "gcn.circular",
"uuid": "a39514b6-2624-4c69-825b-70f0becae58f",
"title": "LIGO/Virgo S230619i: Global MASTER-Net observations report",
"submitter": "Hop gcn.circular",
"authors": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"data": {
"date": "23/06/19 10:24:35 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "34021",
"subject": "LIGO/Virgo S230619i: Global MASTER-Net observations report"
},
"message_text": "V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko,\nG.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin\n(Lomonosov Moscow State University, SAI, Physics Department),\n\nR. Podesta, C.Lopez, F. Podesta, C.Francile\n(Observatorio Astronomico Felix Aguilar OAFA),\n\nR. Rebolo, M. Serra\n(The Instituto de Astrofisica de Canarias),\n\nD. Buckley\n(South African Astronomical Observatory),\n\nO.A. Gres, N.M. Budnev\n(Irkutsk State University, API),\n\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez\n(INAOE, Guillermo Haro Astrophysics Observatory),\n\nA. Tlatov, D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nA. Gabovich, V.Yurkov\n(Blagoveschensk Educational State University)\n\n\nMASTER-OAFA robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Argentina (OAFA observatory of San Juan National University) started inspect of the LIGO/Virgo S230619i errorbox 23805 sec after notice time and 23848 sec after trigger time at 2023-06-19 10:10:29 UT, with upper limit up to 12.5 mag. Observations started at twilight. The observations began at zenith distance = 67 deg. The sun altitude is -17.0 deg.\n\nThe galactic latitude b = -48 deg., longitude l = 216 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/ligo_1.php?id\u0012138\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 22662 | 2023-06-19 09:49:13 | MASTER- | (23h 42m 22.90s , +81d 39m 09.5s) | C | 180 | 18.7 |\n 22862 | 2023-06-19 09:52:33 | MASTER- | (00h 35m 00.64s , +81d 38m 18.1s) | C | 180 | 16.6 |\n 23062 | 2023-06-19 09:55:53 | MASTER- | (23h 45m 21.09s , +79d 46m 41.0s) | C | 180 | 18.5 |\n 23263 | 2023-06-19 09:59:13 | MASTER- | (00h 28m 33.71s , +79d 44m 16.3s) | C | 180 | 16.1 |\n 23463 | 2023-06-19 10:02:34 | MASTER- | (23h 41m 51.58s , +81d 41m 09.0s) | C | 180 | 18.4 |\n 23664 | 2023-06-19 10:05:55 | MASTER- | (00h 34m 39.01s , +81d 38m 46.3s) | C | 180 | 16.4 |\n 23865 | 2023-06-19 10:09:15 | MASTER- | (23h 44m 51.68s , +79d 45m 15.0s) | C | 180 | 18.5 |\n 23938 | 2023-06-19 10:10:29 | MASTER-OAFA | (04h 21m 32.87s , -20d 16m 47.6s) | C | 180 | 12.5 |\n 24065 | 2023-06-19 10:12:36 | MASTER- | (00h 28m 16.55s , +79d 43m 58.3s) | C | 180 | 16.3 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg3MTcwMjc3LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.lyEz12zZSUHH3FZ9hSlYmPPkcyXRYAbOe-vl7Jvaq-M\n\n",
"published": "2023-06-19T10:24:42.076821Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-19T10:24:42.076840Z",
"modified": "2023-06-19T10:24:42.081898Z",
"targets": []
}
]
},
{
"event_id": "S230619x",
"sequences": [
{
"id": 144,
"sequence_number": 1,
"sequence_type": "PRELIMINARY",
"message": {
"id": 389,
"topic": "igwn.gwalert",
"uuid": "70d5e63d-2a2b-4600-877c-8b78e097689a",
"title": "S230619x - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230619x/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230619x/view/"
},
"event": {
"far": 3.92954e-06,
"time": "2023-06-19T05:39:00.790Z",
"group": "Burst",
"search": "AllSky",
"area_50": 333.1995771488333,
"area_90": 1168.2967541339444,
"duration": 0.062638,
"pipeline": "CWB",
"properties": {},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "564c5abdab189f0175d4a9752968b646",
"classification": {},
"skymap_version": 0,
"central_frequency": 1146.18811
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-06-19T05:41:25Z",
"superevent_id": "S230619x",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-19T05:41:26.322550Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-19T05:41:26.322576Z",
"modified": "2023-06-19T05:41:26.329390Z"
}
},
{
"id": 145,
"sequence_number": 2,
"sequence_type": "PRELIMINARY",
"message": {
"id": 390,
"topic": "igwn.gwalert",
"uuid": "05a68712-320f-4cfa-8d99-a49cd09f1514",
"title": "S230619x - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230619x/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230619x/view/"
},
"event": {
"far": 3.92954e-06,
"time": "2023-06-19T05:39:00.790Z",
"group": "Burst",
"search": "AllSky",
"area_50": 333.1995771488333,
"area_90": 1168.2967541339444,
"duration": 0.062638,
"pipeline": "CWB",
"properties": {},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "564c5abdab189f0175d4a9752968b646",
"classification": {},
"skymap_version": 0,
"central_frequency": 1146.18811
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-06-19T05:45:59Z",
"superevent_id": "S230619x",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-19T05:45:59.911800Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-19T05:45:59.911825Z",
"modified": "2023-06-19T05:45:59.917036Z"
}
}
],
"references": [
{
"id": 392,
"topic": "gcn.circular",
"uuid": "c16955a1-b880-4593-8ba5-191bc9d4699f",
"title": "LIGO/Virgo S230619x: Global MASTER-Net observations report",
"submitter": "Hop gcn.circular",
"authors": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"data": {
"date": "23/06/19 05:58:42 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "34018",
"subject": "LIGO/Virgo S230619x: Global MASTER-Net observations report"
},
"message_text": "V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko,\nG.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin\n(Lomonosov Moscow State University, SAI, Physics Department),\n\nR. Podesta, C.Lopez, F. Podesta, C.Francile\n(Observatorio Astronomico Felix Aguilar OAFA),\n\nR. Rebolo, M. Serra\n(The Instituto de Astrofisica de Canarias),\n\nD. Buckley\n(South African Astronomical Observatory),\n\nO.A. Gres, N.M. Budnev\n(Irkutsk State University, API),\n\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez\n(INAOE, Guillermo Haro Astrophysics Observatory),\n\nA. Tlatov, D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nA. Gabovich, V.Yurkov\n(Blagoveschensk Educational State University)\n\n\nMASTER-OAFA robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Argentina (OAFA observatory of San Juan National University) started inspect of the LIGO/Virgo S230619x errorbox 139 sec after notice time and 299 sec after trigger time at 2023-06-19 05:43:59 UT, with upper limit up to 18.9 mag. The observations began at zenith distance = 52 deg. The sun altitude is -73.1 deg.\n\nThe galactic latitude b = -44 deg., longitude l = 314 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/ligo_1.php?id\u0012144\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 329 | 2023-06-19 05:43:59 | MASTER-OAFA | (23h 08m 22.95s , -72d 18m 00.4s) | C | 60 | 18.5 |\n 426 | 2023-06-19 05:45:30 | MASTER-OAFA | (23h 08m 25.94s , -72d 16m 08.7s) | C | 70 | 18.5 |\n 537 | 2023-06-19 05:47:11 | MASTER-OAFA | (23h 08m 21.02s , -72d 17m 04.5s) | C | 90 | 18.7 |\n 673 | 2023-06-19 05:49:13 | MASTER-OAFA | (23h 08m 21.80s , -72d 16m 04.0s) | C | 120 | 18.9 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg3MTU0MzI4LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.j2kyja0JFtSaZoG-0MJjfaMOexWZJBWy0nDPPJLN8_k\n\n",
"published": "2023-06-19T05:58:54.892977Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-19T05:58:54.892998Z",
"modified": "2023-06-19T05:58:54.901326Z",
"targets": []
}
]
},
{
"event_id": "S230619aa",
"sequences": [
{
"id": 146,
"sequence_number": 1,
"sequence_type": "PRELIMINARY",
"message": {
"id": 393,
"topic": "igwn.gwalert",
"uuid": "183f96d9-9806-4f0c-a416-c86bfe8799e2",
"title": "S230619aa - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230619aa/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230619aa/view/"
},
"event": {
"far": 7.879159966250882e-06,
"time": "2023-06-19T06:10:26.262Z",
"group": "CBC",
"search": "AllSky",
"area_50": 3608.962674408018,
"area_90": 13888.631240954392,
"duration": null,
"pipeline": "spiir",
"properties": {
"HasNS": 1.0,
"HasMassGap": 0.5507450709845924,
"HasRemnant": 0.8215558809536104
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "a939a9e41843b838b5deda8536b7fc5f",
"classification": {
"BBH": 0.0,
"BNS": 0.35608646802602034,
"NSBH": 0.02196672930731868,
"Terrestrial": 0.621946802666661
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-06-19T06:10:49Z",
"superevent_id": "S230619aa",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-19T06:10:51.548866Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-19T06:10:51.548895Z",
"modified": "2023-06-19T06:10:51.555852Z"
}
},
{
"id": 147,
"sequence_number": 2,
"sequence_type": "PRELIMINARY",
"message": {
"id": 394,
"topic": "igwn.gwalert",
"uuid": "d2fe2680-5272-44dd-bbe1-4465b420b6e2",
"title": "S230619aa - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230619aa/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230619aa/view/"
},
"event": {
"far": 7.879159966250882e-06,
"time": "2023-06-19T06:10:26.262Z",
"group": "CBC",
"search": "AllSky",
"area_50": 3608.962674408018,
"area_90": 13888.631240954392,
"duration": null,
"pipeline": "spiir",
"properties": {
"HasNS": 1.0,
"HasMassGap": 0.5507450709845924,
"HasRemnant": 0.8215558809536104
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "a939a9e41843b838b5deda8536b7fc5f",
"classification": {
"BBH": 0.0,
"BNS": 0.35608646802602034,
"NSBH": 0.02196672930731868,
"Terrestrial": 0.621946802666661
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-06-19T06:15:24Z",
"superevent_id": "S230619aa",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-19T06:15:25.608417Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-19T06:15:25.608459Z",
"modified": "2023-06-19T06:15:25.614019Z"
}
}
],
"references": []
},
{
"event_id": "S230619a",
"sequences": [],
"references": [
{
"id": 430,
"topic": "gcn.circular",
"uuid": "d7f7eee9-8f68-45d4-9aa2-9e66eb616890",
"title": "LIGO/Virgo S230619ay: Global MASTER-Net observations report",
"submitter": "Hop gcn.circular",
"authors": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"data": {
"date": "23/06/20 02:28:52 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "34032",
"subject": "LIGO/Virgo S230619ay: Global MASTER-Net observations report"
},
"message_text": "V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko,\nG.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin\n(Lomonosov Moscow State University, SAI, Physics Department),\n\nR. Podesta, C.Lopez, F. Podesta, C.Francile\n(Observatorio Astronomico Felix Aguilar OAFA),\n\nR. Rebolo, M. Serra\n(The Instituto de Astrofisica de Canarias),\n\nD. Buckley\n(South African Astronomical Observatory),\n\nO.A. Gres, N.M. Budnev\n(Irkutsk State University, API),\n\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez\n(INAOE, Guillermo Haro Astrophysics Observatory),\n\nA. Tlatov, D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nA. Gabovich, V.Yurkov\n(Blagoveschensk Educational State University)\n\n\nMASTER-OAFA robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Argentina (OAFA observatory of San Juan National University) started inspect of the LIGO/Virgo S230619ay errorbox 26697 sec after notice time and 26747 sec after trigger time at 2023-06-20 02:20:18 UT, with upper limit up to 18.6 mag. The observations began at zenith distance = 69 deg. The sun altitude is -59.0 deg.\n\nThe galactic latitude b = -14 deg., longitude l = 15 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/ligo_1.php?id\u0012158\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 26838 | 2023-06-20 02:20:18 | MASTER-OAFA | (16h 50m 28.81s , +35d 59m 03.8s) | C | 180 | 18.6 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg3MjI4MTM3LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.rUC-C5JcwzlXKVEy6E7XdElx3P86AtbsEkLCWsPHN-w\n\n",
"published": "2023-06-20T02:29:03.688668Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-20T02:29:03.688688Z",
"modified": "2023-06-20T02:29:03.694290Z",
"targets": []
},
{
"id": 419,
"topic": "gcn.circular",
"uuid": "b9656dcb-5f0e-4528-ad2b-66fc711f8717",
"title": "LIGO/Virgo S230619as: Global MASTER-Net observations report",
"submitter": "Hop gcn.circular",
"authors": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"data": {
"date": "23/06/19 22:56:51 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "34027",
"subject": "LIGO/Virgo S230619as: Global MASTER-Net observations report"
},
"message_text": "V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko,\nG.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin\n(Lomonosov Moscow State University, SAI, Physics Department),\n\nR. Podesta, C.Lopez, F. Podesta, C.Francile\n(Observatorio Astronomico Felix Aguilar OAFA),\n\nR. Rebolo, M. Serra\n(The Instituto de Astrofisica de Canarias),\n\nD. Buckley\n(South African Astronomical Observatory),\n\nO.A. Gres, N.M. Budnev\n(Irkutsk State University, API),\n\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez\n(INAOE, Guillermo Haro Astrophysics Observatory),\n\nA. Tlatov, D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nA. Gabovich, V.Yurkov\n(Blagoveschensk Educational State University)\n\n\nMASTER-OAFA robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Argentina (OAFA observatory of San Juan National University) started inspect of the LIGO/Virgo S230619as errorbox 38538 sec after notice time and 38633 sec after trigger time at 2023-06-19 22:40:12 UT, with upper limit up to 17.2 mag. Observations started at twilight. The observations began at zenith distance = 66 deg. The sun altitude is -12.7 deg.\n\nThe galactic latitude b = 27 deg., longitude l = 285 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/ligo_1.php?id\u0012154\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 38724 | 2023-06-19 22:40:12 | MASTER-OAFA | (09h 47m 21.03s , +27d 22m 11.4s) | C | 180 | 17.2 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg3MjE1NDE3LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.UIM6sqMDlWH8_6UxV-_BN3rbOvsFXFQkLOUybGNRJjM\n\n",
"published": "2023-06-19T22:57:01.792828Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-19T22:57:01.792848Z",
"modified": "2023-06-19T22:57:01.797691Z",
"targets": []
},
{
"id": 418,
"topic": "gcn.circular",
"uuid": "a6024f40-88c8-45d0-a7aa-2efa46ac0e82",
"title": "LIGO/Virgo S230619ap: Global MASTER-Net observations report",
"submitter": "Hop gcn.circular",
"authors": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"data": {
"date": "23/06/19 22:56:46 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "34026",
"subject": "LIGO/Virgo S230619ap: Global MASTER-Net observations report"
},
"message_text": "V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko,\nG.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin\n(Lomonosov Moscow State University, SAI, Physics Department),\n\nR. Podesta, C.Lopez, F. Podesta, C.Francile\n(Observatorio Astronomico Felix Aguilar OAFA),\n\nR. Rebolo, M. Serra\n(The Instituto de Astrofisica de Canarias),\n\nD. Buckley\n(South African Astronomical Observatory),\n\nO.A. Gres, N.M. Budnev\n(Irkutsk State University, API),\n\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez\n(INAOE, Guillermo Haro Astrophysics Observatory),\n\nA. Tlatov, D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nA. Gabovich, V.Yurkov\n(Blagoveschensk Educational State University)\n\n\nMASTER-OAFA robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Argentina (OAFA observatory of San Juan National University) started inspect of the LIGO/Virgo S230619ap errorbox 38999 sec after notice time and 39075 sec after trigger time at 2023-06-19 22:40:12 UT, with upper limit up to 17.2 mag. Observations started at twilight. The observations began at zenith distance = 66 deg. The sun altitude is -12.7 deg.\n\nThe galactic latitude b = 39 deg., longitude l = 290 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/ligo_1.php?id\u0012150\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 39166 | 2023-06-19 22:40:12 | MASTER-OAFA | (09h 47m 21.03s , +27d 22m 11.4s) | C | 180 | 17.2 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg3MjE1NDExLCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.bznEnPeD7efMJ4KfiGtPm1sjxpxsbvHkWI7kObvmLzk\n\n",
"published": "2023-06-19T22:56:57.760876Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-19T22:56:57.760896Z",
"modified": "2023-06-19T22:56:57.769459Z",
"targets": []
},
{
"id": 395,
"topic": "gcn.circular",
"uuid": "5b0305e7-4887-4f5d-b80e-e0350495b1f8",
"title": "LIGO/Virgo S230619aa: Global MASTER-Net observations report",
"submitter": "Hop gcn.circular",
"authors": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"data": {
"date": "23/06/19 06:20:43 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "34019",
"subject": "LIGO/Virgo S230619aa: Global MASTER-Net observations report"
},
"message_text": "V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko,\nG.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin\n(Lomonosov Moscow State University, SAI, Physics Department),\n\nR. Podesta, C.Lopez, F. Podesta, C.Francile\n(Observatorio Astronomico Felix Aguilar OAFA),\n\nR. Rebolo, M. Serra\n(The Instituto de Astrofisica de Canarias),\n\nD. Buckley\n(South African Astronomical Observatory),\n\nO.A. Gres, N.M. Budnev\n(Irkutsk State University, API),\n\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez\n(INAOE, Guillermo Haro Astrophysics Observatory),\n\nA. Tlatov, D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nA. Gabovich, V.Yurkov\n(Blagoveschensk Educational State University)\n\n\nMASTER-OAFA robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Argentina (OAFA observatory of San Juan National University) started inspect of the LIGO/Virgo S230619aa errorbox 6 sec after trigger time at 2023-06-19 06:10:32 UT, with upper limit up to 19.3 mag. The observations began at zenith distance = 36 deg. The sun altitude is -67.7 deg.\n\nThe galactic latitude b = 51 deg., longitude l = 74 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/ligo_1.php?id\u0012146\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 97 | 2023-06-19 06:10:32 | MASTER-OAFA | (20h 25m 26.28s , -65d 51m 27.9s) | C | 180 | 19.3 |\n 168 | 2023-06-19 06:12:58 | MASTER- | (15h 43m 00.57s , +46d 26m 36.1s) | C | 30 | 18.4 |\n 222 | 2023-06-19 06:13:48 | MASTER- | (15h 42m 53.65s , +46d 25m 58.4s) | C | 40 | 18.8 |\n 287 | 2023-06-19 06:14:48 | MASTER- | (15h 42m 53.49s , +46d 26m 57.4s) | C | 50 | 18.9 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg3MTU1NjQ4LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.9NxkT4C9vZGo5v2DH5w0RfVAyHIsg66pOaYFZovez94\n\n",
"published": "2023-06-19T06:20:54.796397Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-19T06:20:54.796416Z",
"modified": "2023-06-19T06:20:54.801801Z",
"targets": []
}
]
},
{
"event_id": "S230619ap",
"sequences": [
{
"id": 148,
"sequence_number": 1,
"sequence_type": "PRELIMINARY",
"message": {
"id": 399,
"topic": "igwn.gwalert",
"uuid": "8d443bb0-03e5-4266-935c-8258582d82c8",
"title": "S230619ap - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230619ap/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230619ap/view/"
},
"event": {
"far": 4.950385e-06,
"time": "2023-06-19T11:48:57.449Z",
"group": "CBC",
"search": "AllSky",
"area_50": 1036.7374752470942,
"area_90": 3788.571514483208,
"duration": null,
"pipeline": "MBTA",
"properties": {
"HasNS": 0.4598938373161195,
"HasMassGap": 0.03355579322638146,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "cb0bb0ce256a626e73736c98f09c0d0e",
"classification": {
"BBH": 0.092377359,
"BNS": 0.0,
"NSBH": 0.000218408,
"Terrestrial": 0.907404235
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-06-19T11:49:25Z",
"superevent_id": "S230619ap",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-19T11:49:26.645369Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-19T11:49:26.645396Z",
"modified": "2023-06-19T11:49:26.652571Z"
}
},
{
"id": 149,
"sequence_number": 2,
"sequence_type": "PRELIMINARY",
"message": {
"id": 400,
"topic": "igwn.gwalert",
"uuid": "14997d4b-5dcc-4f4e-9a86-51942288c9e1",
"title": "S230619ap - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230619ap/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230619ap/view/"
},
"event": {
"far": 4.950385e-06,
"time": "2023-06-19T11:48:57.449Z",
"group": "CBC",
"search": "AllSky",
"area_50": 1036.7374752470942,
"area_90": 3788.571514483208,
"duration": null,
"pipeline": "MBTA",
"properties": {
"HasNS": 0.4598938373161195,
"HasMassGap": 0.03355579322638146,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "cb0bb0ce256a626e73736c98f09c0d0e",
"classification": {
"BBH": 0.092377359,
"BNS": 0.0,
"NSBH": 0.000218408,
"Terrestrial": 0.907404235
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-06-19T11:54:01Z",
"superevent_id": "S230619ap",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-19T11:54:02.409119Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-19T11:54:02.409144Z",
"modified": "2023-06-19T11:54:02.414313Z"
}
}
],
"references": []
},
{
"event_id": "S230619as",
"sequences": [
{
"id": 150,
"sequence_number": 1,
"sequence_type": "PRELIMINARY",
"message": {
"id": 401,
"topic": "igwn.gwalert",
"uuid": "bc1ff2e3-5278-4a1c-97f2-87a5da30b0fd",
"title": "S230619as - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230619as/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230619as/view/"
},
"event": {
"far": 1.86704e-05,
"time": "2023-06-19T11:56:19.120Z",
"group": "Burst",
"search": "BBH",
"area_50": 4036.163139820501,
"area_90": 12910.014850638172,
"duration": 0.054661,
"pipeline": "CWB",
"properties": {},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "c9d92741820e4994fd81c2d6eaaf1cd0",
"classification": {},
"skymap_version": 0,
"central_frequency": 26.900211
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-06-19T11:57:30Z",
"superevent_id": "S230619as",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-19T11:57:31.890627Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-19T11:57:31.890655Z",
"modified": "2023-06-19T11:57:31.895980Z"
}
},
{
"id": 151,
"sequence_number": 2,
"sequence_type": "PRELIMINARY",
"message": {
"id": 403,
"topic": "igwn.gwalert",
"uuid": "42a0b355-643f-400d-972b-5b3c459bc812",
"title": "S230619as - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230619as/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230619as/view/"
},
"event": {
"far": 1.86704e-05,
"time": "2023-06-19T11:56:19.120Z",
"group": "Burst",
"search": "BBH",
"area_50": 4036.163139820501,
"area_90": 12910.014850638172,
"duration": 0.054661,
"pipeline": "CWB",
"properties": {},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "c9d92741820e4994fd81c2d6eaaf1cd0",
"classification": {},
"skymap_version": 0,
"central_frequency": 26.900211
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-06-19T12:02:04Z",
"superevent_id": "S230619as",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-19T12:02:05.454458Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-19T12:02:05.454501Z",
"modified": "2023-06-19T12:02:05.460503Z"
}
}
],
"references": []
},
{
"event_id": "S230619ay",
"sequences": [
{
"id": 152,
"sequence_number": 1,
"sequence_type": "PRELIMINARY",
"message": {
"id": 406,
"topic": "igwn.gwalert",
"uuid": "2ab950b8-8725-4e68-b398-31f462a2adb7",
"title": "S230619ay - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230619ay/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230619ay/view/"
},
"event": {
"far": 1.990416603803169e-05,
"time": "2023-06-19T18:54:31.851Z",
"group": "CBC",
"search": "AllSky",
"area_50": 2820.865941554732,
"area_90": 10591.885802564928,
"duration": null,
"pipeline": "spiir",
"properties": {
"HasNS": 0.8241556303391582,
"HasMassGap": 0.05584942834942835,
"HasRemnant": 0.00024337663163513727
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "fb48a5a434aa574e3478416349c61209",
"classification": {
"BBH": 0.042995160941313365,
"BNS": 0.0,
"NSBH": 0.05810388468943599,
"Terrestrial": 0.8989009543692507
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-06-19T18:54:54Z",
"superevent_id": "S230619ay",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-19T18:54:55.654079Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-19T18:54:55.654107Z",
"modified": "2023-06-19T18:54:55.660917Z"
}
},
{
"id": 153,
"sequence_number": 2,
"sequence_type": "PRELIMINARY",
"message": {
"id": 407,
"topic": "igwn.gwalert",
"uuid": "c2b7fbe5-44c2-430a-93d7-922effa31bc5",
"title": "S230619ay - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230619ay/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230619ay/view/"
},
"event": {
"far": 1.990416603803169e-05,
"time": "2023-06-19T18:54:31.851Z",
"group": "CBC",
"search": "AllSky",
"area_50": 2820.865941554732,
"area_90": 10591.885802564928,
"duration": null,
"pipeline": "spiir",
"properties": {
"HasNS": 0.8241556303391582,
"HasMassGap": 0.05584942834942835,
"HasRemnant": 0.00024337663163513727
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "fb48a5a434aa574e3478416349c61209",
"classification": {
"BBH": 0.042995160941313365,
"BNS": 0.0,
"NSBH": 0.05810388468943599,
"Terrestrial": 0.8989009543692507
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-06-19T18:59:28Z",
"superevent_id": "S230619ay",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-19T18:59:30.208318Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-19T18:59:30.208345Z",
"modified": "2023-06-19T18:59:30.213455Z"
}
}
],
"references": []
},
{
"event_id": "S230619bb",
"sequences": [
{
"id": 154,
"sequence_number": 1,
"sequence_type": "PRELIMINARY",
"message": {
"id": 409,
"topic": "igwn.gwalert",
"uuid": "efbc6624-2b75-4ed6-bfbf-7feed9b405ba",
"title": "S230619bb - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230619bb/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230619bb/view/"
},
"event": {
"far": 8.30024e-06,
"time": "2023-06-19T19:07:24.949Z",
"group": "Burst",
"search": "BBH",
"area_50": 1317.6910229815321,
"area_90": 4212.414805314847,
"duration": 0.011417,
"pipeline": "CWB",
"properties": {},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "ac546e60e9d048a7790ada4399695f97",
"classification": {},
"skymap_version": 0,
"central_frequency": 101.703369
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-06-19T19:08:33Z",
"superevent_id": "S230619bb",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-19T19:08:34.319504Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-19T19:08:34.319529Z",
"modified": "2023-06-19T19:08:34.324495Z"
}
},
{
"id": 155,
"sequence_number": 2,
"sequence_type": "PRELIMINARY",
"message": {
"id": 410,
"topic": "igwn.gwalert",
"uuid": "6b6256d7-74e3-48a2-b6a6-c77484e836e6",
"title": "S230619bb - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230619bb/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230619bb/view/"
},
"event": {
"far": 8.30024e-06,
"time": "2023-06-19T19:07:24.949Z",
"group": "Burst",
"search": "BBH",
"area_50": 1317.6910229815321,
"area_90": 4212.414805314847,
"duration": 0.011417,
"pipeline": "CWB",
"properties": {},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "ac546e60e9d048a7790ada4399695f97",
"classification": {},
"skymap_version": 0,
"central_frequency": 101.703369
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-06-19T19:13:07Z",
"superevent_id": "S230619bb",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-19T19:13:07.895938Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-19T19:13:07.895964Z",
"modified": "2023-06-19T19:13:07.900822Z"
}
}
],
"references": []
},
{
"event_id": "S230619bd",
"sequences": [
{
"id": 156,
"sequence_number": 1,
"sequence_type": "PRELIMINARY",
"message": {
"id": 412,
"topic": "igwn.gwalert",
"uuid": "6e8979a3-9ac9-4861-8091-1c7933ff7b11",
"title": "S230619bd - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230619bd/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230619bd/view/"
},
"event": {
"far": 1.930821417772677e-05,
"time": "2023-06-19T19:25:06.414Z",
"group": "CBC",
"search": "AllSky",
"area_50": 1125.9124250507805,
"area_90": 5847.3588261862005,
"duration": null,
"pipeline": "spiir",
"properties": {
"HasNS": 1.0,
"HasMassGap": 0.45594227994228,
"HasRemnant": 1.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "98633be4549c019fbba9d2dd579da5e3",
"classification": {
"BBH": 0.0,
"BNS": 0.18150985658299149,
"NSBH": 0.003990815144573781,
"Terrestrial": 0.8144993282724348
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-06-19T19:25:31Z",
"superevent_id": "S230619bd",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-19T19:25:32.508256Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-19T19:25:32.508283Z",
"modified": "2023-06-19T19:25:32.514506Z"
}
},
{
"id": 157,
"sequence_number": 2,
"sequence_type": "PRELIMINARY",
"message": {
"id": 413,
"topic": "igwn.gwalert",
"uuid": "60bdcc1f-d310-4451-821d-aaf9002e0c5f",
"title": "S230619bd - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230619bd/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230619bd/view/"
},
"event": {
"far": 1.930821417772677e-05,
"time": "2023-06-19T19:25:06.414Z",
"group": "CBC",
"search": "AllSky",
"area_50": 1125.9124250507805,
"area_90": 5847.3588261862005,
"duration": null,
"pipeline": "spiir",
"properties": {
"HasNS": 1.0,
"HasMassGap": 0.45594227994228,
"HasRemnant": 1.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "98633be4549c019fbba9d2dd579da5e3",
"classification": {
"BBH": 0.0,
"BNS": 0.18150985658299149,
"NSBH": 0.003990815144573781,
"Terrestrial": 0.8144993282724348
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-06-19T19:30:05Z",
"superevent_id": "S230619bd",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-19T19:30:06.940638Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-19T19:30:06.940664Z",
"modified": "2023-06-19T19:30:06.945998Z"
}
}
],
"references": []
},
{
"event_id": "S230619b",
"sequences": [],
"references": [
{
"id": 889,
"topic": "gcn.circular",
"uuid": "c4098794-da7b-4f9c-9cb4-3c3481430109",
"title": "LVK S230619bd/GBM-230619: Upper limits from a two-week IceCube neutrino search",
"submitter": "Hop gcn.circular",
"authors": "Jessie Thwaites at IceCube/U Wisc-Madison <thwaites@wisc.edu>",
"data": {
"date": "23/07/04 16:14:26 GMT",
"from": "Jessie Thwaites at IceCube/U Wisc-Madison <thwaites@wisc.edu>",
"title": "GCN CIRCULAR",
"number": "34142",
"subject": "LVK S230619bd/GBM-230619: Upper limits from a two-week IceCube neutrino search"
},
"message_text": "The IceCube Collaboration (http://icecube.wisc.edu/) reports:\n\nIceCube has performed an additional search for track-like muon neutrino events consistent with the sky localization of the joint skymap for low significance gravitational-wave candidate S230619bd and GBM-230619 (https://gcn.nasa.gov/circulars/34054) in a time range of -0.1 day, +14 days from the GW alert event time (2023-06-19 17:01:06.4 UTC to 2023-07-03 19:25:06.4 UTC). During this time period IceCube was collecting good quality data. This is a maximum likelihood analysis which searches for a generic point-like neutrino source coincident with the given GW skymap [1,2].\n\nIn this case, we report a p-value of 0.31, consistent with no significant excess of track events. IceCube's sensitivity assuming an E^-2 spectrum (E^2 dN/dE) to neutrino point sources within the locations spanned by the 90% spatial containment of the joint skymap ranges from 0.037 to 0.061 GeV cm^-2 in this time window.\n\nA Bayesian search [1,2] was also performed, using the standard time window of 1000 seconds centered on the alert event time (2023-06-19 19:16:46 UTC to 2023-06-19 19:33:26 UTC), and using the the map for S230619bd circulated in the 2-Preliminary notice. This search uses a Bayesian approach to quantify the joint GW + neutrino event significance, which assumes a binary merger scenario and accounts for known astrophysical priors, such as GW source distance, in the significance estimate [3]. For this search we report a p-value of 0.22, consistent with no significant events coincident with the map. IceCube's sensitivity assuming an E^-2 spectrum (E^2 dN/dE) to neutrino point sources within the locations spanned by the 90% spatial containment of the 2-Preliminary map ranges from 0.0277 to 1.0771 GeV cm^-2 in a 1000 second time window.\n\nThe IceCube Neutrino Observatory is a cubic-kilometer neutrino detector operating at the geographic South Pole, Antarctica. The IceCube realtime alert point of contact can be reached at roc@icecube.wisc.edu.\n\n[1] M. G. Aartsen et al 2020 ApJL 898 L10\n[2] Abbasi et al. Astrophys.J. 944 (2023) 1, 80\n[3] I. Bartos et al. 2019 Phys. Rev. D 100, 083017\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg4NDg3MjcyLCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.dN0C-HCQW3twtdnsQcGfZi2tSyEBMJwTgkISo-kTbB8\n\n",
"published": "2023-07-04T16:14:41.089958Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-07-04T16:14:41.089976Z",
"modified": "2023-07-04T16:14:41.095951Z",
"targets": []
},
{
"id": 460,
"topic": "gcn.circular",
"uuid": "e9e5dd3f-324b-4700-aab8-0e165881ebae",
"title": "LIGO/Virgo/KAGRA S230619bg: one counterpart neutrino candidate from IceCube neutrino searches",
"submitter": "Hop gcn.circular",
"authors": "Erik Blaufuss at University of Maryland, College Park <blaufuss@umd.edu>",
"data": {
"date": "23/06/20 21:29:25 GMT",
"from": "Erik Blaufuss at University of Maryland, College Park <blaufuss@umd.edu>",
"title": "GCN CIRCULAR",
"number": "34045",
"subject": "LIGO/Virgo/KAGRA S230619bg: one counterpart neutrino candidate from IceCube neutrino searches"
},
"message_text": "The IceCube Collaboration (http://icecube.wisc.edu/) reports:\n\nA search for track-like muon neutrino events detected by IceCube consistent with the sky\nlocalization of the low-significance gravitational wave candidate S230619bg in a time range of 1000 seconds\ncentered on the alert event time (2023-06-19 23:32:47 UTC to 2023-06-19 23:49:27 UTC)\nhas been performed [1,2]. During this time period IceCube was collecting good quality data.\nOne hypothesis test was conducted for this low-significance gravitational wave event. The\nsearch uses a Bayesian approach to quantify the joint GW + neutrino event significance, which\nassumes a binary merger scenario and accounts for known astrophysical priors, such as GW source\ndistance, in the significance estimate [3].\n\nOne track-like event is found in spatial and temporal coincidence with the gravitational-wave\ncandidate S230619bg calculated from the map circulated by LVK as S230619bg-2-Preliminary. This\nrepresents an overall pre-trial p-value of 0.0028 for the Bayesian search. The most probable multi-messenger source direction based on the neutrinos and GW skymap is RA 109.25, Dec 63.68 degrees.\n\nThe reported p-value here does not account for any trials correction (multiple hypotheses testing). The false alarm rate of these coincidences can be obtained by multiplying the p-values with their corresponding GW trigger rates. Further details are available at https://gcn.nasa.gov/missions/icecube.\n\nProperties of the coincident event(s) are shown below.\n\ndt(s)\tRA(deg)\t\tDec(deg)\tAngular uncertainty(deg) p-value(generic transient) p-value(Bayesian)\n-----------------------------------------------------------------------------------------------------\n-391.66 109.25 \t63.68 \t1.227 \tnull (not applicable) \t0.0028\n...\n\nwhere:\ndt = Time of track event minus time of GW trigger (sec)\nAngular uncertainty = Angular uncertainty of track event: the radius of a circle\n \trepresenting 90% CL containment by area.\np-value = the p-value for this specific track event from each search.\n\nThe IceCube Neutrino Observatory is a cubic-kilometer neutrino detector operating at the\ngeographic South Pole, Antarctica. The IceCube realtime alert point of contact can be\nreached at roc@icecube.wisc.edu\n\n\n[1] M. G. Aartsen et al 2020 ApJL 898 L10\n[2] Abbasi et al. Astrophys.J. 944 (2023) 1, 80\n[3] I. Bartos et al. 2019 Phys. Rev. D 100, 083017\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg3Mjk2NTcxLCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.CzJ4HGW9CHr2MaSnlMmVa61YM5AlMfcVP2eBISUD5KI\n\n",
"published": "2023-06-20T21:29:36.863010Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-20T21:29:36.863029Z",
"modified": "2023-06-20T21:29:36.870882Z",
"targets": []
},
{
"id": 438,
"topic": "gcn.circular",
"uuid": "78be82ce-bc27-4376-ac68-aaf5ea6f98d3",
"title": "LIGO/Virgo S230619bg: Global MASTER-Net observations report",
"submitter": "Hop gcn.circular",
"authors": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"data": {
"date": "23/06/20 03:36:49 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "34034",
"subject": "LIGO/Virgo S230619bg: Global MASTER-Net observations report"
},
"message_text": "V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko,\nG.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin\n(Lomonosov Moscow State University, SAI, Physics Department),\n\nR. Podesta, C.Lopez, F. Podesta, C.Francile\n(Observatorio Astronomico Felix Aguilar OAFA),\n\nR. Rebolo, M. Serra\n(The Instituto de Astrofisica de Canarias),\n\nD. Buckley\n(South African Astronomical Observatory),\n\nO.A. Gres, N.M. Budnev\n(Irkutsk State University, API),\n\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez\n(INAOE, Guillermo Haro Astrophysics Observatory),\n\nA. Tlatov, D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nA. Gabovich, V.Yurkov\n(Blagoveschensk Educational State University)\n\n\nMASTER-OAFA robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Argentina (OAFA observatory of San Juan National University) started inspect of the LIGO/Virgo S230619bg errorbox 12248 sec after notice time and 12323 sec after trigger time at 2023-06-20 03:06:30 UT, with upper limit up to 17.1 mag. The observations began at zenith distance = 35 deg. The sun altitude is -68.8 deg.\n\nThe galactic latitude b = 28 deg., longitude l = 173 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/ligo_1.php?id\u0012172\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 12414 | 2023-06-20 03:06:30 | MASTER-OAFA | (15h 53m 47.82s , -65d 44m 33.5s) | C | 180 | 17.1 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg3MjMyMjE0LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.rpXiVpO4gTagEN_iNRY8dNeDcjDPMTod8gxrGjL4mi4\n\n",
"published": "2023-06-20T03:37:00.368766Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-20T03:37:00.368793Z",
"modified": "2023-06-20T03:37:00.374312Z",
"targets": []
},
{
"id": 421,
"topic": "gcn.circular",
"uuid": "fc96b12b-0628-4a6e-ba66-8fea1de18d6e",
"title": "LIGO/Virgo S230619bd: Global MASTER-Net observations report",
"submitter": "Hop gcn.circular",
"authors": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"data": {
"date": "23/06/19 23:14:52 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "34029",
"subject": "LIGO/Virgo S230619bd: Global MASTER-Net observations report"
},
"message_text": "V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko,\nG.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin\n(Lomonosov Moscow State University, SAI, Physics Department),\n\nR. Podesta, C.Lopez, F. Podesta, C.Francile\n(Observatorio Astronomico Felix Aguilar OAFA),\n\nR. Rebolo, M. Serra\n(The Instituto de Astrofisica de Canarias),\n\nD. Buckley\n(South African Astronomical Observatory),\n\nO.A. Gres, N.M. Budnev\n(Irkutsk State University, API),\n\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez\n(INAOE, Guillermo Haro Astrophysics Observatory),\n\nA. Tlatov, D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nA. Gabovich, V.Yurkov\n(Blagoveschensk Educational State University)\n\n\nMASTER-OAFA robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Argentina (OAFA observatory of San Juan National University) started inspect of the LIGO/Virgo S230619bd errorbox 13113 sec after notice time and 13183 sec after trigger time at 2023-06-19 23:04:49 UT, with upper limit up to 18.5 mag. The observations began at zenith distance = 71 deg. The sun altitude is -17.7 deg.\n\nThe galactic latitude b = 15 deg., longitude l = 180 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/ligo_1.php?id\u0012166\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 13273 | 2023-06-19 23:04:49 | MASTER-OAFA | (09h 48m 26.24s , +30d 19m 24.4s) | C | 180 | 18.5 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg3MjE2NDk3LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.KF8JS4x56Lc8utcAYI8o6Jd3dfGpZcuHiu4VrohsnLg\n\n",
"published": "2023-06-19T23:15:03.658558Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-19T23:15:03.658598Z",
"modified": "2023-06-19T23:15:03.665323Z",
"targets": []
},
{
"id": 420,
"topic": "gcn.circular",
"uuid": "48e2fc1b-9520-46a6-aad9-1d09e7bb5cd8",
"title": "LIGO/Virgo S230619bb: Global MASTER-Net observations report",
"submitter": "Hop gcn.circular",
"authors": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"data": {
"date": "23/06/19 22:57:34 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "34028",
"subject": "LIGO/Virgo S230619bb: Global MASTER-Net observations report"
},
"message_text": "V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko,\nG.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin\n(Lomonosov Moscow State University, SAI, Physics Department),\n\nR. Podesta, C.Lopez, F. Podesta, C.Francile\n(Observatorio Astronomico Felix Aguilar OAFA),\n\nR. Rebolo, M. Serra\n(The Instituto de Astrofisica de Canarias),\n\nD. Buckley\n(South African Astronomical Observatory),\n\nO.A. Gres, N.M. Budnev\n(Irkutsk State University, API),\n\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez\n(INAOE, Guillermo Haro Astrophysics Observatory),\n\nA. Tlatov, D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nA. Gabovich, V.Yurkov\n(Blagoveschensk Educational State University)\n\n\nMASTER-OAFA robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Argentina (OAFA observatory of San Juan National University) started inspect of the LIGO/Virgo S230619bb errorbox 12680 sec after notice time and 12768 sec after trigger time at 2023-06-19 22:40:12 UT, with upper limit up to 17.2 mag. Observations started at twilight. The observations began at zenith distance = 66 deg. The sun altitude is -12.7 deg.\n\nThe galactic latitude b = -3 deg., longitude l = 327 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/ligo_1.php?id\u0012164\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 12859 | 2023-06-19 22:40:12 | MASTER-OAFA | (09h 47m 21.03s , +27d 22m 11.4s) | C | 180 | 17.2 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg3MjE1NDU3LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.YPhSNNIsBjrbrApBtVTU2yjXJrUjh_qKaUybObJv1BI\n\n",
"published": "2023-06-19T22:57:41.877948Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-19T22:57:41.877980Z",
"modified": "2023-06-19T22:57:41.883592Z",
"targets": []
}
]
},
{
"event_id": "S230619bg",
"sequences": [
{
"id": 158,
"sequence_number": 1,
"sequence_type": "PRELIMINARY",
"message": {
"id": 422,
"topic": "igwn.gwalert",
"uuid": "18c34590-9300-4faf-9014-dedf74b388c9",
"title": "S230619bg - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230619bg/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230619bg/view/"
},
"event": {
"far": 1.775175e-05,
"time": "2023-06-19T23:41:07.144Z",
"group": "CBC",
"search": "AllSky",
"area_50": 692.20743388791,
"area_90": 3335.3529460691775,
"duration": null,
"pipeline": "MBTA",
"properties": {
"HasNS": 0.17218742832309253,
"HasMassGap": 0.03938101512014556,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "9b045012977735644f375f9a4e594fb0",
"classification": {
"BBH": 0.028748027,
"BNS": 0.0,
"NSBH": 6.7969e-05,
"Terrestrial": 0.971184005
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-06-19T23:41:33Z",
"superevent_id": "S230619bg",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-19T23:41:34.850564Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-19T23:41:34.850590Z",
"modified": "2023-06-19T23:41:34.858793Z"
}
},
{
"id": 159,
"sequence_number": 2,
"sequence_type": "PRELIMINARY",
"message": {
"id": 423,
"topic": "igwn.gwalert",
"uuid": "b83aac41-9e4d-4689-80d5-e306a8ce1018",
"title": "S230619bg - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230619bg/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230619bg/view/"
},
"event": {
"far": 1.775175e-05,
"time": "2023-06-19T23:41:07.144Z",
"group": "CBC",
"search": "AllSky",
"area_50": 692.20743388791,
"area_90": 3335.3529460691775,
"duration": null,
"pipeline": "MBTA",
"properties": {
"HasNS": 0.17218742832309253,
"HasMassGap": 0.03938101512014556,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "9b045012977735644f375f9a4e594fb0",
"classification": {
"BBH": 0.028748027,
"BNS": 0.0,
"NSBH": 6.7969e-05,
"Terrestrial": 0.971184005
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-06-19T23:46:08Z",
"superevent_id": "S230619bg",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-19T23:46:09.547064Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-19T23:46:09.547091Z",
"modified": "2023-06-19T23:46:09.552289Z"
}
}
],
"references": []
},
{
"event_id": "S230620g",
"sequences": [
{
"id": 160,
"sequence_number": 1,
"sequence_type": "PRELIMINARY",
"message": {
"id": 427,
"topic": "igwn.gwalert",
"uuid": "93b84c3e-e23a-4310-83a9-c701581227ad",
"title": "S230620g - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230620g/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230620g/view/"
},
"event": {
"far": 1.66736e-05,
"time": "2023-06-20T01:12:17.164Z",
"group": "Burst",
"search": "BBH",
"area_50": 2346.6650320104227,
"area_90": 7832.28829711061,
"duration": 0.062632,
"pipeline": "CWB",
"properties": {},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "445774f223d0cd36d486570ea7b30755",
"classification": {},
"skymap_version": 0,
"central_frequency": 21.493717
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-06-20T01:13:37Z",
"superevent_id": "S230620g",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-20T01:13:38.086360Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-20T01:13:38.086399Z",
"modified": "2023-06-20T01:13:38.092141Z"
}
},
{
"id": 161,
"sequence_number": 2,
"sequence_type": "PRELIMINARY",
"message": {
"id": 428,
"topic": "igwn.gwalert",
"uuid": "ebce9035-9d8e-4b6f-9d8e-677ec873e171",
"title": "S230620g - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230620g/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230620g/view/"
},
"event": {
"far": 1.66736e-05,
"time": "2023-06-20T01:12:17.164Z",
"group": "Burst",
"search": "BBH",
"area_50": 2346.6650320104227,
"area_90": 7832.28829711061,
"duration": 0.062632,
"pipeline": "CWB",
"properties": {},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "445774f223d0cd36d486570ea7b30755",
"classification": {},
"skymap_version": 0,
"central_frequency": 21.493717
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-06-20T01:18:11Z",
"superevent_id": "S230620g",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-20T01:18:12.690648Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-20T01:18:12.690674Z",
"modified": "2023-06-20T01:18:12.695794Z"
}
}
],
"references": [
{
"id": 431,
"topic": "gcn.circular",
"uuid": "a1cd4e73-6eff-4f45-8065-6aab27b45f8b",
"title": "LIGO/Virgo S230620g: Global MASTER-Net observations report",
"submitter": "Hop gcn.circular",
"authors": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"data": {
"date": "23/06/20 02:54:59 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "34033",
"subject": "LIGO/Virgo S230620g: Global MASTER-Net observations report"
},
"message_text": "V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko,\nG.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin\n(Lomonosov Moscow State University, SAI, Physics Department),\n\nR. Podesta, C.Lopez, F. Podesta, C.Francile\n(Observatorio Astronomico Felix Aguilar OAFA),\n\nR. Rebolo, M. Serra\n(The Instituto de Astrofisica de Canarias),\n\nD. Buckley\n(South African Astronomical Observatory),\n\nO.A. Gres, N.M. Budnev\n(Irkutsk State University, API),\n\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez\n(INAOE, Guillermo Haro Astrophysics Observatory),\n\nA. Tlatov, D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nA. Gabovich, V.Yurkov\n(Blagoveschensk Educational State University)\n\n\nMASTER-OAFA robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Argentina (OAFA observatory of San Juan National University) started inspect of the LIGO/Virgo S230620g errorbox 4913 sec after notice time and 5024 sec after trigger time at 2023-06-20 02:36:01 UT, with upper limit up to 18.0 mag. The observations began at zenith distance = 62 deg. The sun altitude is -62.4 deg.\n\nThe galactic latitude b = 52 deg., longitude l = 178 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/ligo_1.php?id\u0012176\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 5114 | 2023-06-20 02:36:01 | MASTER-OAFA | (22h 01m 35.97s , -67d 49m 13.4s) | C | 180 | 18.0 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg3MjI5NzA1LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.vvv6UUdJj5Ifg4qaN7kOajBo499a-8VFfmWJvUwD204\n\n",
"published": "2023-06-20T02:55:11.054042Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-20T02:55:11.054061Z",
"modified": "2023-06-20T02:55:11.059173Z",
"targets": []
}
]
},
{
"event_id": "S230620w",
"sequences": [
{
"id": 162,
"sequence_number": 1,
"sequence_type": "PRELIMINARY",
"message": {
"id": 432,
"topic": "igwn.gwalert",
"uuid": "727404a8-df37-4f1e-9258-260479502285",
"title": "S230620w - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230620w/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230620w/view/"
},
"event": {
"far": 9.74398e-06,
"time": "2023-06-20T03:14:44.154Z",
"group": "Burst",
"search": "BBH",
"area_50": 1814.552860946543,
"area_90": 5874.216222832958,
"duration": 0.044334,
"pipeline": "CWB",
"properties": {},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "7475cf84fca90331743a9e47c975c22a",
"classification": {},
"skymap_version": 0,
"central_frequency": 24.910656
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-06-20T03:18:25Z",
"superevent_id": "S230620w",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-20T03:18:26.697733Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-20T03:18:26.697758Z",
"modified": "2023-06-20T03:18:26.704652Z"
}
},
{
"id": 164,
"sequence_number": 2,
"sequence_type": "PRELIMINARY",
"message": {
"id": 434,
"topic": "igwn.gwalert",
"uuid": "2b43d732-5118-487c-8fe3-97ebea454c5a",
"title": "S230620w - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230620w/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230620w/view/"
},
"event": {
"far": 9.74398e-06,
"time": "2023-06-20T03:14:44.154Z",
"group": "Burst",
"search": "BBH",
"area_50": 1814.552860946543,
"area_90": 5874.216222832958,
"duration": 0.044334,
"pipeline": "CWB",
"properties": {},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "7475cf84fca90331743a9e47c975c22a",
"classification": {},
"skymap_version": 0,
"central_frequency": 24.910656
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-06-20T03:23:00Z",
"superevent_id": "S230620w",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-20T03:23:00.402008Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-20T03:23:00.402033Z",
"modified": "2023-06-20T03:23:00.407174Z"
}
}
],
"references": [
{
"id": 439,
"topic": "gcn.circular",
"uuid": "712a1f96-3856-452f-b854-6c40a167bdcb",
"title": "LIGO/Virgo S230620w: Global MASTER-Net observations report",
"submitter": "Hop gcn.circular",
"authors": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"data": {
"date": "23/06/20 03:37:11 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "34035",
"subject": "LIGO/Virgo S230620w: Global MASTER-Net observations report"
},
"message_text": "V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko,\nG.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin\n(Lomonosov Moscow State University, SAI, Physics Department),\n\nR. Podesta, C.Lopez, F. Podesta, C.Francile\n(Observatorio Astronomico Felix Aguilar OAFA),\n\nR. Rebolo, M. Serra\n(The Instituto de Astrofisica de Canarias),\n\nD. Buckley\n(South African Astronomical Observatory),\n\nO.A. Gres, N.M. Budnev\n(Irkutsk State University, API),\n\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez\n(INAOE, Guillermo Haro Astrophysics Observatory),\n\nA. Tlatov, D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nA. Gabovich, V.Yurkov\n(Blagoveschensk Educational State University)\n\n\nMASTER-OAFA robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Argentina (OAFA observatory of San Juan National University) started inspect of the LIGO/Virgo S230620w errorbox 46 sec after notice time and 289 sec after trigger time at 2023-06-20 03:19:33 UT, with upper limit up to 16.8 mag. The observations began at zenith distance = 52 deg. The sun altitude is -71.4 deg.\n\nThe galactic latitude b = -40 deg., longitude l = 335 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/ligo_1.php?id\u0012182\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 320 | 2023-06-20 03:19:33 | MASTER-OAFA | (21h 02m 43.75s , -61d 03m 20.2s) | C | 60 | 16.3 |\n 416 | 2023-06-20 03:21:05 | MASTER-OAFA | (21h 02m 50.10s , -61d 02m 51.3s) | C | 70 | 16.8 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg3MjMyMjMzLCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.zF5-g9T6yvXFJ6MMigCnJiIi_oKrTjwoEvvvfvlftRc\n\n",
"published": "2023-06-20T03:37:16.414328Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-20T03:37:16.414346Z",
"modified": "2023-06-20T03:37:16.419298Z",
"targets": []
}
]
},
{
"event_id": "S230620z",
"sequences": [
{
"id": 163,
"sequence_number": 1,
"sequence_type": "PRELIMINARY",
"message": {
"id": 433,
"topic": "igwn.gwalert",
"uuid": "1aeef6df-abbf-4f7b-a26c-288a9e211915",
"title": "S230620z - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230620z/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230620z/view/"
},
"event": {
"far": 1.22784e-05,
"time": "2023-06-20T03:19:49.185Z",
"group": "Burst",
"search": "AllSky",
"area_50": 934.1338271200287,
"area_90": 4030.2880843040225,
"duration": 0.015122,
"pipeline": "CWB",
"properties": {},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "1a49a66c4872a47ebf2dd767f33de75d",
"classification": {},
"skymap_version": 0,
"central_frequency": 974.893372
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-06-20T03:21:01Z",
"superevent_id": "S230620z",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-20T03:21:01.996990Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-20T03:21:01.997015Z",
"modified": "2023-06-20T03:21:02.004351Z"
}
},
{
"id": 165,
"sequence_number": 2,
"sequence_type": "PRELIMINARY",
"message": {
"id": 435,
"topic": "igwn.gwalert",
"uuid": "f11f2fc6-a75f-4401-8b20-481200f1650a",
"title": "S230620z - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230620z/files/bayestar.multiorder.fits,1",
"gracedb": "https://gracedb.ligo.org/superevents/S230620z/view/"
},
"event": {
"far": 5.42631e-06,
"time": "2023-06-20T03:19:49.193Z",
"group": "Burst",
"search": "AllSky",
"area_50": 903.9192558924267,
"area_90": 5698.384204161219,
"duration": 0.024205,
"pipeline": "CWB",
"properties": {},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "8d958336da16a2a68b301ada1be54c27",
"classification": {},
"skymap_version": 1,
"central_frequency": 879.400696
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-06-20T03:25:36Z",
"superevent_id": "S230620z",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-20T03:25:37.709230Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-20T03:25:37.709257Z",
"modified": "2023-06-20T03:25:37.713981Z"
}
}
],
"references": [
{
"id": 440,
"topic": "gcn.circular",
"uuid": "ad528b39-c75b-417d-9206-4b6505fc99a7",
"title": "LIGO/Virgo S230620z: Global MASTER-Net observations report",
"submitter": "Hop gcn.circular",
"authors": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"data": {
"date": "23/06/20 03:37:22 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "34036",
"subject": "LIGO/Virgo S230620z: Global MASTER-Net observations report"
},
"message_text": "V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko,\nG.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin\n(Lomonosov Moscow State University, SAI, Physics Department),\n\nR. Podesta, C.Lopez, F. Podesta, C.Francile\n(Observatorio Astronomico Felix Aguilar OAFA),\n\nR. Rebolo, M. Serra\n(The Instituto de Astrofisica de Canarias),\n\nD. Buckley\n(South African Astronomical Observatory),\n\nO.A. Gres, N.M. Budnev\n(Irkutsk State University, API),\n\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez\n(INAOE, Guillermo Haro Astrophysics Observatory),\n\nA. Tlatov, D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nA. Gabovich, V.Yurkov\n(Blagoveschensk Educational State University)\n\n\nMASTER-OAFA robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Argentina (OAFA observatory of San Juan National University) started inspect of the LIGO/Virgo S230620z errorbox 76 sec after trigger time at 2023-06-20 03:21:05 UT, with upper limit up to 16.8 mag. The observations began at zenith distance = 52 deg. The sun altitude is -71.7 deg.\n\nThe galactic latitude b = -71 deg., longitude l = 278 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/ligo_1.php?id\u0012184\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 111 | 2023-06-20 03:21:05 | MASTER-OAFA | (21h 02m 50.10s , -61d 02m 51.3s) | C | 70 | 16.8 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg3MjMyMjQ0LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.rHnzOTx-3EXmvSg_Oc_yiX5fQfRLDFYIrDUU5KaS1ZI\n\n",
"published": "2023-06-20T03:37:26.450324Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-20T03:37:26.450342Z",
"modified": "2023-06-20T03:37:26.454786Z",
"targets": []
}
]
},
{
"event_id": "S230620ad",
"sequences": [
{
"id": 166,
"sequence_number": 1,
"sequence_type": "PRELIMINARY",
"message": {
"id": 441,
"topic": "igwn.gwalert",
"uuid": "70a40d17-455d-4805-9675-c35b0e7ffb8c",
"title": "S230620ad - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230620ad/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230620ad/view/"
},
"event": {
"far": 6.255681910261046e-06,
"time": "2023-06-20T03:50:54.196Z",
"group": "CBC",
"search": "AllSky",
"area_50": 926.1605374905226,
"area_90": 2862.8306238152904,
"duration": null,
"pipeline": "spiir",
"properties": {
"HasNS": 0.2597441478691218,
"HasMassGap": 0.5134569502928359,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "2d438b40ea752bb45520b0f7d9d23b78",
"classification": {
"BBH": 0.02119884185381368,
"BNS": 0.0,
"NSBH": 0.12113980541270503,
"Terrestrial": 0.8576613527334813
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-06-20T03:51:21Z",
"superevent_id": "S230620ad",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-20T03:51:22.034542Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-20T03:51:22.034567Z",
"modified": "2023-06-20T03:51:22.039808Z"
}
},
{
"id": 167,
"sequence_number": 2,
"sequence_type": "PRELIMINARY",
"message": {
"id": 442,
"topic": "igwn.gwalert",
"uuid": "749d478b-7779-4174-95d2-8faa0174ff22",
"title": "S230620ad - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230620ad/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230620ad/view/"
},
"event": {
"far": 6.255681910261046e-06,
"time": "2023-06-20T03:50:54.196Z",
"group": "CBC",
"search": "AllSky",
"area_50": 926.1605374905226,
"area_90": 2862.8306238152904,
"duration": null,
"pipeline": "spiir",
"properties": {
"HasNS": 0.2597441478691218,
"HasMassGap": 0.5134569502928359,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "2d438b40ea752bb45520b0f7d9d23b78",
"classification": {
"BBH": 0.02119884185381368,
"BNS": 0.0,
"NSBH": 0.12113980541270503,
"Terrestrial": 0.8576613527334813
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-06-20T03:55:57Z",
"superevent_id": "S230620ad",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-20T03:55:58.771162Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-20T03:55:58.771205Z",
"modified": "2023-06-20T03:55:58.781957Z"
}
}
],
"references": []
},
{
"event_id": "S230620af",
"sequences": [
{
"id": 168,
"sequence_number": 1,
"sequence_type": "PRELIMINARY",
"message": {
"id": 444,
"topic": "igwn.gwalert",
"uuid": "dca36f0f-f7fb-4f01-8e6d-b55b61d011cd",
"title": "S230620af - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230620af/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230620af/view/"
},
"event": {
"far": 1.68553e-05,
"time": "2023-06-20T04:30:42.065Z",
"group": "Burst",
"search": "AllSky",
"area_50": 728.2970606319901,
"area_90": 3849.839950583623,
"duration": 0.036883,
"pipeline": "CWB",
"properties": {},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "a220aefe622c3f14525116e08f9e2001",
"classification": {},
"skymap_version": 0,
"central_frequency": 1086.730103
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-06-20T04:32:33Z",
"superevent_id": "S230620af",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-20T04:32:34.317287Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-20T04:32:34.317313Z",
"modified": "2023-06-20T04:32:34.325694Z"
}
},
{
"id": 169,
"sequence_number": 2,
"sequence_type": "PRELIMINARY",
"message": {
"id": 445,
"topic": "igwn.gwalert",
"uuid": "eb7b13ef-eafb-4e33-a066-9c6004c7fc0a",
"title": "S230620af - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230620af/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230620af/view/"
},
"event": {
"far": 1.68553e-05,
"time": "2023-06-20T04:30:42.065Z",
"group": "Burst",
"search": "AllSky",
"area_50": 728.2970606319901,
"area_90": 3849.839950583623,
"duration": 0.036883,
"pipeline": "CWB",
"properties": {},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "a220aefe622c3f14525116e08f9e2001",
"classification": {},
"skymap_version": 0,
"central_frequency": 1086.730103
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-06-20T04:37:08Z",
"superevent_id": "S230620af",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-20T04:37:09.993577Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-20T04:37:09.993604Z",
"modified": "2023-06-20T04:37:10.012350Z"
}
}
],
"references": []
},
{
"event_id": "S230620a",
"sequences": [],
"references": [
{
"id": 471,
"topic": "gcn.circular",
"uuid": "601d6528-773d-4f8d-ac57-947b89bfd837",
"title": "LIGO/Virgo S230620ad: Global MASTER-Net observations report",
"submitter": "Hop gcn.circular",
"authors": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"data": {
"date": "23/06/21 12:42:45 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "34050",
"subject": "LIGO/Virgo S230620ad: Global MASTER-Net observations report"
},
"message_text": "V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko,\nG.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin\n(Lomonosov Moscow State University, SAI, Physics Department),\n\nR. Podesta, C.Lopez, F. Podesta, C.Francile\n(Observatorio Astronomico Felix Aguilar OAFA),\n\nR. Rebolo, M. Serra\n(The Instituto de Astrofisica de Canarias),\n\nD. Buckley\n(South African Astronomical Observatory),\n\nO.A. Gres, N.M. Budnev\n(Irkutsk State University, API),\n\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez\n(INAOE, Guillermo Haro Astrophysics Observatory),\n\nA. Tlatov, D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nA. Gabovich, V.Yurkov\n(Blagoveschensk Educational State University)\n\n\nMASTER-OAFA robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Argentina (OAFA observatory of San Juan National University) started inspect of the LIGO/Virgo S230620ad errorbox 22840 sec after notice time and 22921 sec after trigger time at 2023-06-20 10:12:55 UT, with upper limit up to 18.4 mag. Observations started at twilight. The observations began at zenith distance = 59 deg. The sun altitude is -16.5 deg.\n\nMASTER-SAAO robotic telescope located in South Africa (South African Astronomical Observatory) started inspect of the LIGO/Virgo S230620ad errorbox 85150 sec after notice time and 85231 sec after trigger time at 2023-06-21 03:31:25 UT, with upper limit up to 18.4 mag. The observations began at zenith distance = 69 deg. The sun altitude is -26.2 deg.\n\nThe galactic latitude b = 67 deg., longitude l = 77 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/ligo_1.php?id\u0012188\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 87 | 2023-06-20 03:52:15 | MASTER- | (14h 15m 26.83s , +41d 17m 28.0s) | C | 10 | 12.1 |\n 122 | 2023-06-20 03:52:45 | MASTER- | (14h 15m 32.58s , +41d 17m 43.1s) | C | 20 | 13.7 |\n 167 | 2023-06-20 03:53:25 | MASTER- | (14h 15m 29.57s , +41d 19m 03.9s) | C | 30 | 14.0 |\n 222 | 2023-06-20 03:54:16 | MASTER- | (14h 15m 29.50s , +41d 17m 45.1s) | C | 40 | 13.5 |\n 287 | 2023-06-20 03:55:16 | MASTER- | (14h 15m 32.17s , +41d 19m 02.2s) | C | 50 | 14.6 |\n 363 | 2023-06-20 03:56:26 | MASTER- | (14h 15m 25.14s , +41d 18m 22.9s) | C | 60 | 15.6 |\n 453 | 2023-06-20 03:57:46 | MASTER- | (14h 15m 24.85s , +41d 19m 19.7s) | C | 80 | 16.6 |\n 563 | 2023-06-20 03:59:26 | MASTER- | (14h 15m 30.65s , +41d 18m 15.6s) | C | 100 | 16.5 |\n 693 | 2023-06-20 04:01:26 | MASTER- | (14h 15m 25.13s , +41d 17m 08.7s) | C | 120 | 16.5 |\n 23012 | 2023-06-20 10:12:55 | MASTER-OAFA | (04h 26m 47.26s , -39d 16m 11.6s) | C | 180 | 18.4 |\n 23775 | 2023-06-20 10:25:38 | MASTER-OAFA | (04h 26m 43.56s , -39d 16m 49.5s) | C | 180 | 17.8 |\n 23986 | 2023-06-20 10:29:10 | MASTER-OAFA | (04h 37m 04.90s , -39d 16m 08.2s) | C | 180 | 16.3 |\n 78462 | 2023-06-21 01:37:05 | MASTER-OAFA | (11h 35m 53.32s , -33d 12m 36.7s) | C | 180 | 12.9 |\n 78776 | 2023-06-21 01:42:19 | MASTER-OAFA | (11h 41m 08.44s , -33d 12m 35.7s) | C | 180 | 12.6 |\n 79723 | 2023-06-21 01:58:06 | MASTER-OAFA | (11h 55m 48.92s , -33d 12m 34.5s) | C | 180 | 12.2 |\n 85322 | 2023-06-21 03:31:25 | MASTER-SAAO | (04h 50m 29.16s , -44d 33m 10.0s) | C | 180 | 18.4 |\n 85322 | 2023-06-21 03:31:25 | MASTER-SAAO | (04h 51m 32.07s , -44d 33m 51.5s) | C | 180 | 18.3 |\n 85533 | 2023-06-21 03:34:57 | MASTER-SAAO | (05h 02m 41.63s , -44d 31m 26.8s) | C | 180 | 18.0 |\n 85533 | 2023-06-21 03:34:57 | MASTER-SAAO | (05h 01m 38.75s , -44d 30m 45.3s) | C | 180 | 18.1 |\n 85744 | 2023-06-21 03:38:28 | MASTER-SAAO | (04h 18m 53.87s , -36d 57m 15.0s) | C | 180 | 17.7 |\n 85744 | 2023-06-21 03:38:28 | MASTER-SAAO | (04h 19m 50.51s , -36d 57m 57.0s) | C | 180 | 17.6 |\n 85956 | 2023-06-21 03:41:59 | MASTER-SAAO | (04h 28m 47.08s , -36d 57m 30.5s) | C | 180 | 13.4 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg3MzUxMzcxLCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.2AIzynQO_E-j-KhTkYAJc27ZJiscOL1aP9mP_vAH5ZA\n\n",
"published": "2023-06-21T12:42:56.906747Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-21T12:42:56.906769Z",
"modified": "2023-06-21T12:42:56.913886Z",
"targets": []
},
{
"id": 469,
"topic": "gcn.circular",
"uuid": "6ace262f-b10d-4a53-9f99-540c8dc3e43d",
"title": "LIGO/Virgo S230620au: Global MASTER-Net observations report",
"submitter": "Hop gcn.circular",
"authors": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"data": {
"date": "23/06/21 09:53:07 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "34048",
"subject": "LIGO/Virgo S230620au: Global MASTER-Net observations report"
},
"message_text": "V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko,\nG.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin\n(Lomonosov Moscow State University, SAI, Physics Department),\n\nR. Podesta, C.Lopez, F. Podesta, C.Francile\n(Observatorio Astronomico Felix Aguilar OAFA),\n\nR. Rebolo, M. Serra\n(The Instituto de Astrofisica de Canarias),\n\nD. Buckley\n(South African Astronomical Observatory),\n\nO.A. Gres, N.M. Budnev\n(Irkutsk State University, API),\n\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez\n(INAOE, Guillermo Haro Astrophysics Observatory),\n\nA. Tlatov, D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nA. Gabovich, V.Yurkov\n(Blagoveschensk Educational State University)\n\n\nMASTER-SAAO robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in South Africa (South African Astronomical Observatory) started inspect of the LIGO/Virgo S230620au errorbox 18081 sec after notice time and 18166 sec after trigger time at 2023-06-20 17:00:36 UT, with upper limit up to 19.7 mag. Observations started at twilight. The observations began at zenith distance = 59 deg. The sun altitude is -16.3 deg.\n\nThe galactic latitude b = 2 deg., longitude l = 273 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/ligo_1.php?id\u0012200\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 18256 | 2023-06-20 17:00:36 | MASTER-SAAO | (08h 34m 25.24s , -03d 56m 38.3s) | C | 180 | 18.6 |\n 18256 | 2023-06-20 17:00:36 | MASTER-SAAO | (08h 35m 08.87s , -03d 56m 45.2s) | B | 180 | 18.7 |\n 18456 | 2023-06-20 17:03:56 | MASTER-SAAO | (08h 34m 29.52s , -03d 57m 26.0s) | C | 180 | 18.8 |\n 18636 | 2023-06-20 17:03:56 | MASTER-SAAO | (08h 34m 29.53s , -03d 57m 26.0s) | C | 540 | 19.2 | Coadd\n 18456 | 2023-06-20 17:03:56 | MASTER-SAAO | (08h 35m 12.59s , -03d 57m 40.0s) | C | 180 | 18.9 |\n 18636 | 2023-06-20 17:03:56 | MASTER-SAAO | (08h 35m 12.59s , -03d 57m 40.0s) | C | 540 | 19.2 | Coadd\n 19301 | 2023-06-20 17:18:00 | MASTER-SAAO | (08h 34m 26.64s , -03d 57m 00.2s) | C | 180 | 18.8 |\n 19301 | 2023-06-20 17:18:00 | MASTER-SAAO | (08h 35m 09.59s , -03d 57m 05.1s) | B | 180 | 18.9 |\n 19500 | 2023-06-20 17:21:20 | MASTER-SAAO | (08h 34m 26.95s , -03d 55m 54.2s) | C | 180 | 18.6 |\n 19500 | 2023-06-20 17:21:20 | MASTER-SAAO | (08h 35m 09.64s , -03d 56m 05.9s) | C | 180 | 18.8 |\n 20981 | 2023-06-20 17:46:01 | MASTER-SAAO | (07h 43m 52.14s , -19d 33m 05.3s) | C | 180 | 17.2 |\n 20981 | 2023-06-20 17:46:01 | MASTER-SAAO | (07h 43m 07.44s , -19d 32m 48.1s) | C | 180 | 16.0 |\n 21406 | 2023-06-20 17:53:05 | MASTER-SAAO | (07h 51m 35.92s , -19d 33m 24.0s) | C | 180 | 16.4 |\n 21406 | 2023-06-20 17:53:05 | MASTER-SAAO | (07h 52m 20.59s , -19d 33m 43.2s) | C | 180 | 17.1 |\n 23259 | 2023-06-20 18:23:59 | MASTER-SAAO | (07h 44m 22.51s , -19d 31m 52.7s) | C | 180 | 16.5 |\n 23731 | 2023-06-20 18:31:51 | MASTER-SAAO | (07h 52m 50.48s , -19d 32m 37.4s) | C | 180 | 16.4 |\n 42394 | 2023-06-20 23:42:54 | MASTER-SAAO | (20h 43m 50.18s , -67d 22m 01.0s) | C | 180 | 19.1 |\n 42394 | 2023-06-20 23:42:54 | MASTER-SAAO | (20h 46m 24.78s , -67d 23m 12.5s) | C | 180 | 19.2 |\n 42605 | 2023-06-20 23:46:25 | MASTER-SAAO | (21h 04m 38.75s , -67d 21m 51.9s) | C | 180 | 19.0 |\n 42605 | 2023-06-20 23:46:25 | MASTER-SAAO | (21h 07m 13.12s , -67d 23m 01.8s) | C | 180 | 19.2 |\n 43239 | 2023-06-20 23:56:58 | MASTER-SAAO | (20h 43m 56.31s , -67d 22m 17.0s) | C | 180 | 18.6 |\n 43239 | 2023-06-20 23:56:58 | MASTER-SAAO | (20h 46m 27.93s , -67d 23m 45.4s) | C | 180 | 18.7 |\n 43450 | 2023-06-21 00:00:30 | MASTER-SAAO | (21h 04m 40.96s , -67d 21m 46.0s) | C | 180 | 18.3 |\n 43450 | 2023-06-21 00:00:30 | MASTER-SAAO | (21h 07m 12.43s , -67d 23m 13.0s) | C | 180 | 18.3 |\n 48734 | 2023-06-21 01:28:34 | MASTER-SAAO | (20h 26m 06.37s , -65d 23m 58.7s) | C | 180 | 19.0 |\n 48734 | 2023-06-21 01:28:34 | MASTER-SAAO | (20h 28m 12.80s , -65d 25m 54.9s) | C | 180 | 19.0 |\n 48946 | 2023-06-21 01:32:05 | MASTER-SAAO | (20h 45m 18.31s , -65d 26m 20.4s) | C | 180 | 19.6 |\n 48946 | 2023-06-21 01:32:05 | MASTER-SAAO | (20h 47m 24.83s , -65d 28m 16.2s) | C | 180 | 19.7 |\n 49574 | 2023-06-21 01:42:33 | MASTER-SAAO | (20h 23m 48.34s , -65d 24m 32.3s) | C | 180 | 19.2 |\n 49574 | 2023-06-21 01:42:33 | MASTER-SAAO | (20h 25m 44.35s , -65d 26m 06.5s) | C | 180 | 19.3 |\n 49785 | 2023-06-21 01:46:04 | MASTER-SAAO | (20h 44m 43.46s , -65d 28m 01.1s) | C | 180 | 19.2 |\n 49785 | 2023-06-21 01:46:04 | MASTER-SAAO | (20h 42m 47.24s , -65d 26m 27.2s) | C | 180 | 19.2 |\n 56291 | 2023-06-21 03:34:31 | MASTER- | (08h 35m 24.83s , -04d 35m 28.9s) | C | 180 | 14.2 |\n 56635 | 2023-06-21 03:40:14 | MASTER- | (08h 35m 25.15s , -04d 34m 54.1s) | V | 180 | 13.5 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg3MzQxMTkzLCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.bU7HrZbJ5UWB-iwlHD6hVgtnIqOoXcg_vxQneLNJUBc\n\n",
"published": "2023-06-21T09:53:18.762527Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-21T09:53:18.762545Z",
"modified": "2023-06-21T09:53:18.767695Z",
"targets": []
},
{
"id": 450,
"topic": "gcn.circular",
"uuid": "4d5d8e6a-c919-4901-a839-e9cd541f2981",
"title": "LIGO/Virgo S230620al: Global MASTER-Net observations report",
"submitter": "Hop gcn.circular",
"authors": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"data": {
"date": "23/06/20 06:04:44 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "34038",
"subject": "LIGO/Virgo S230620al: Global MASTER-Net observations report"
},
"message_text": "V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko,\nG.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin\n(Lomonosov Moscow State University, SAI, Physics Department),\n\nR. Podesta, C.Lopez, F. Podesta, C.Francile\n(Observatorio Astronomico Felix Aguilar OAFA),\n\nR. Rebolo, M. Serra\n(The Instituto de Astrofisica de Canarias),\n\nD. Buckley\n(South African Astronomical Observatory),\n\nO.A. Gres, N.M. Budnev\n(Irkutsk State University, API),\n\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez\n(INAOE, Guillermo Haro Astrophysics Observatory),\n\nA. Tlatov, D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nA. Gabovich, V.Yurkov\n(Blagoveschensk Educational State University)\n\n\nMASTER-OAFA robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Argentina (OAFA observatory of San Juan National University) started inspect of the LIGO/Virgo S230620al errorbox 52 sec after notice time and 151 sec after trigger time at 2023-06-20 05:57:26 UT, with upper limit up to 17.1 mag. The observations began at zenith distance = 73 deg. The sun altitude is -70.4 deg.\n\nThe galactic latitude b = 33 deg., longitude l = 62 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/ligo_1.php?id\u0012194\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 167 | 2023-06-20 05:57:26 | MASTER-OAFA | (17h 19m 49.60s , +37d 25m 48.5s) | C | 30 | 17.1 |\n 233 | 2023-06-20 05:58:28 | MASTER-OAFA | (17h 19m 43.74s , +37d 25m 17.5s) | C | 40 | 17.1 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg3MjQxMDkwLCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.n21pvTDSMclB1zitFSgFbEF78eJn-IEcqm9B4r0XmvI\n\n",
"published": "2023-06-20T06:04:55.829199Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-20T06:04:55.829220Z",
"modified": "2023-06-20T06:04:55.834635Z",
"targets": []
},
{
"id": 447,
"topic": "gcn.circular",
"uuid": "c28d5e9e-5f39-46ed-ad3f-2cb941630fe0",
"title": "LIGO/Virgo S230620af: Global MASTER-Net observations report",
"submitter": "Hop gcn.circular",
"authors": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"data": {
"date": "23/06/20 04:47:06 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "34037",
"subject": "LIGO/Virgo S230620af: Global MASTER-Net observations report"
},
"message_text": "V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko,\nG.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin\n(Lomonosov Moscow State University, SAI, Physics Department),\n\nR. Podesta, C.Lopez, F. Podesta, C.Francile\n(Observatorio Astronomico Felix Aguilar OAFA),\n\nR. Rebolo, M. Serra\n(The Instituto de Astrofisica de Canarias),\n\nD. Buckley\n(South African Astronomical Observatory),\n\nO.A. Gres, N.M. Budnev\n(Irkutsk State University, API),\n\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez\n(INAOE, Guillermo Haro Astrophysics Observatory),\n\nA. Tlatov, D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nA. Gabovich, V.Yurkov\n(Blagoveschensk Educational State University)\n\n\nMASTER-OAFA robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Argentina (OAFA observatory of San Juan National University) started inspect of the LIGO/Virgo S230620af errorbox 32 sec after notice time and 179 sec after trigger time at 2023-06-20 04:33:41 UT, with upper limit up to 18.4 mag. The observations began at zenith distance = 59 deg. The sun altitude is -82.4 deg.\n\nThe galactic latitude b = 60 deg., longitude l = 177 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/ligo_1.php?id\u0012190\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 270 | 2023-06-20 04:33:41 | MASTER-OAFA | (16h 02m 34.91s , +21d 39m 05.3s) | C | 180 | 18.4 |\n 448 | 2023-06-20 04:37:30 | MASTER- | (10h 37m 59.66s , +40d 35m 01.8s) | C | 80 | 16.7 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg3MjM2NDMxLCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.csrhj3CFWfrjVmP1lgj6IvNSwHOco7QLDuoWvwIy9uA\n\n",
"published": "2023-06-20T04:47:17.323843Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-20T04:47:17.323879Z",
"modified": "2023-06-20T04:47:17.329585Z",
"targets": []
}
]
}
]
}