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"uuid": "7540a67e-428a-4edf-8df9-0fb2f28816d8",
"title": "INTEGRAL follow-up of S230619ap",
"submitter": "Volodymyr Savchenko",
"authors": "",
"data": {},
"message_text": "INTEGRAL follow-up of S230619ap at 2023-06-19T11:48:57.000\n\n\nSPI-ACS excesses:\nat T0+-234.66 FAP = 0.092\nat T0+21.16 FAP = 0.461\nat T0+54.96 FAP = 0.542\nat T0+23.74 FAP = 0.584\nat T0+15.39 FAP = 0.795\nat T0+-100.26 FAP = 0.94\n\n\n\n\nnext break in data in 35 hr: 2023-06-20T22:34:13, for 9.3 hr",
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"topic": "igwn.gwalert",
"uuid": "42a0b355-643f-400d-972b-5b3c459bc812",
"title": "S230619as - PRELIMINARY",
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"id": 404,
"topic": "hermes.message",
"uuid": "b6435839-b442-4d09-8dc1-1c44b33f42e9",
"title": "INTEGRAL follow-up of S230619as",
"submitter": "Volodymyr Savchenko",
"authors": "",
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"message_text": "INTEGRAL follow-up of S230619as at 2023-06-19T11:56:19.000\n\n\nSPI-ACS excesses:\nat T0+90.04 FAP = 0.474\nat T0+70.34 FAP = 0.536\nat T0+-18.66 FAP = 0.704\nat T0+-128.14 FAP = 0.724\nat T0+27.24 FAP = 0.82\nat T0+71.91 FAP = 0.981\n\n\n\n\nnext break in data in 35 hr: 2023-06-20T22:34:13, for 9.3 hr",
"published": "2023-06-19T12:11:34.948014Z",
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{
"id": 405,
"topic": "gcn.circular",
"uuid": "1d1a8b79-9e23-4cb1-a26f-ef77f9cf2b71",
"title": "ZTF23aaoohpy/AT2023lcr: Zwicky Transient Facility discovery of a fast fading red transient",
"submitter": "Hop gcn.circular",
"authors": "Igor Andreoni at JSI/UMD/NASA <igor.andreoni@gmail.com>",
"data": {
"date": "23/06/19 17:12:17 GMT",
"from": "Igor Andreoni at JSI/UMD/NASA <igor.andreoni@gmail.com>",
"title": "GCN CIRCULAR",
"number": "34022",
"subject": "ZTF23aaoohpy/AT2023lcr: Zwicky Transient Facility discovery of a fast fading red transient"
},
"message_text": "Vishwajeet Swain (IITB), Igor Andreoni (JSI/UMD/NASA-GSFC), Michael Coughlin (UMN), Harsh Kumar (IITB), Anirudh Salgundi (IITB) on behalf of the ZTF Collaboration\n\n\nWe report the discovery of the fast fading transient candidate ZTF23aaoohpy/AT2023lcr with the Zwicky Transient Facility (ZTF, Bellm et al. 2019, Graham et al. 2019) at coordinates:\n\nRA = 16:31:37.40 (247.9058524d)\nDec = +26:21:58.35 (26.3662079d)\n\nZTF23aaoohpy was first detected on 2023-06-18 06:36:27 UT at g = 19.658 +- 0.141 mag (AB). ZTF23aaoohpy faded by about ~1.0 magnitudes per day in both g- and r-band. The non-detection limiting magnitude of 21.1 was measured in g-band on 2023-06-17 09:39:58 UT, which is about 23 hours before the first detection. There is no pre-detection at the transient location in the last 80 images of the field previously acquired by the ZTF survey. ZTF photometry is reported in the following table:\n\n----------------------------------\n MJD | mag AB\n----------------------------------\n60113.275313 | g = 19.66 +- 0.14\n60114.279398 | g = 20.67 +- 0.27\n60113.337488 | r = 19.37 +- 0.10\n60114.341065 | r = 20.38 +- 0.19\n----------------------------------\n\nExtinction along the line of sight is small, with E(B-V)=0.05 mag. The transient is located at high Galactic latitude bA.25 deg. There is no cataloged source at the transient location in deep Legacy Survey DR10 and Pan-STARRS (Chambers et al., 2016) archival images.\n\n\nFollow-up observations are encouraged.\n\nZTF23aaoohpy was discovered by the ''ZTF Realtime Search and Triggering'' project (ZTFReST; Andreoni & Coughlin et al., 2021) within the ZTF Collaboration.\n\n\nBased on observations obtained with the Samuel Oschin Telescope 48-inch and the 60-inch Telescope at the Palomar Observatory as part of the Zwicky Transient Facility project. ZTF is supported by the National Science Foundation under Grant No. AST-2034437 and a collaboration including Caltech, IPAC, the Weizmann Institute for Science, the Oskar Klein Center at Stockholm University, the University of Maryland, Deutsches Elektronen-Synchrotron and Humboldt University, the TANGO Consortium of Taiwan, the University of Wisconsin at Milwaukee, Trinity College Dublin, Lawrence Livermore National Laboratories, and IN2P3, France. Operations are conducted by COO, IPAC, and UW.\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg3MTk0NzQyLCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.GqlidGFfOdKCIXqIKabmkMf2vXgrZgjZN_2VDaldCsI\n\n",
"published": "2023-06-19T17:12:29.938218Z",
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"retracted": false,
"created": "2023-06-19T17:12:29.938237Z",
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"title": "S230619ay - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
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{
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"topic": "igwn.gwalert",
"uuid": "c2b7fbe5-44c2-430a-93d7-922effa31bc5",
"title": "S230619ay - PRELIMINARY",
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"id": 408,
"topic": "hermes.message",
"uuid": "8ea42a2b-c1af-4a1b-b037-a29f683c7152",
"title": "INTEGRAL follow-up of S230619ay",
"submitter": "Volodymyr Savchenko",
"authors": "",
"data": {},
"message_text": "INTEGRAL follow-up of S230619ay at 2023-06-19T18:54:31.000\n\n\nSPI-ACS excesses:\nat T0+3.01 FAP = 0.018\nat T0+-48.31 FAP = 0.029\nat T0+21.31 FAP = 0.289\nat T0+-30.26 FAP = 0.587\nat T0+43.36 FAP = 0.652\nat T0+-2.74 FAP = 0.942\nat T0+138.09 FAP = 0.947\n\n\n\n\nnext break in data in 28 hr: 2023-06-20T22:34:13, for 9.3 hr",
"published": "2023-06-19T19:07:07.172429Z",
"message_parser": "Hermes Message Parser v2",
"retracted": false,
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"uuid": "efbc6624-2b75-4ed6-bfbf-7feed9b405ba",
"title": "S230619bb - PRELIMINARY",
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"uuid": "6b6256d7-74e3-48a2-b6a6-c77484e836e6",
"title": "S230619bb - PRELIMINARY",
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"retracted": false,
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{
"id": 411,
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"uuid": "8ee56214-0f19-4375-906c-b087209d23bd",
"title": "INTEGRAL follow-up of S230619bb",
"submitter": "Volodymyr Savchenko",
"authors": "",
"data": {},
"message_text": "INTEGRAL follow-up of S230619bb at 2023-06-19T19:07:24.000\n\n\nSPI-ACS excesses:\nat T0+0.96 FAP = 0.008\nat T0+-16.26 FAP = 0.163\nat T0+122.86 FAP = 0.394\nat T0+-38.24 FAP = 0.928\n\n\n\n\nnext break in data in 27 hr: 2023-06-20T22:34:13, for 9.3 hr",
"published": "2023-06-19T19:19:46.619232Z",
"message_parser": "Hermes Message Parser v2",
"retracted": false,
"created": "2023-06-19T19:19:46.619252Z",
"modified": "2023-06-19T19:19:46.625233Z",
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{
"id": 412,
"topic": "igwn.gwalert",
"uuid": "6e8979a3-9ac9-4861-8091-1c7933ff7b11",
"title": "S230619bd - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
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"data": {
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"published": "2023-06-19T19:25:32.508256Z",
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"created": "2023-06-19T19:25:32.508283Z",
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{
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"title": "S230619bd - PRELIMINARY",
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{
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"topic": "hermes.message",
"uuid": "5dc49302-c0ae-4ded-8b37-61f906720637",
"title": "INTEGRAL follow-up of S230619bd",
"submitter": "Volodymyr Savchenko",
"authors": "",
"data": {},
"message_text": "INTEGRAL follow-up of S230619bd at 2023-06-19T19:25:06.000\n\n\nSPI-ACS excesses:\nat T0+27.56 FAP = 0.048\nat T0+135.69 FAP = 0.117\nat T0+17.01 FAP = 0.13\nat T0+-1.21 FAP = 0.181\nat T0+-5.34 FAP = 0.704\nat T0+-38.24 FAP = 0.806\nat T0+-62.76 FAP = 0.847\n\n\n\n\nnext break in data in 27 hr: 2023-06-20T22:34:13, for 9.3 hr",
"published": "2023-06-19T19:37:26.893996Z",
"message_parser": "Hermes Message Parser v2",
"retracted": false,
"created": "2023-06-19T19:37:26.894025Z",
"modified": "2023-06-19T19:37:26.899104Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 415,
"topic": "gcn.circular",
"uuid": "af69a69b-96dd-49dd-a9ca-54ac5f4a4c6d",
"title": "ZTF23aaoohpy/AT2023lcr: GOTO early optical observations and constraint",
"submitter": "Hop gcn.circular",
"authors": "Ben Gompertz at U of Birmingham <b.gompertz@bham.ac.uk>",
"data": {
"date": "23/06/19 19:52:34 GMT",
"from": "Ben Gompertz at U of Birmingham <b.gompertz@bham.ac.uk>",
"title": "GCN CIRCULAR",
"number": "34023",
"subject": "ZTF23aaoohpy/AT2023lcr: GOTO early optical observations and constraint"
},
"message_text": "B. Gompertz, K. Ackley, G. Ramsay, J. Lyman, D. OâNeill, A. Levan, 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 observations of the fast fading transient candidate ZTF23aaoohpy/AT2023lcr (Swain et al, GCN 34022). The field was covered three times by the Gravitational-wave Optical Transient Observer (GOTO; Steeghs et al. 2021) between 2023-06-17 and 2023-06-18. We detect the reported transient in an observation taken at 01:27:41 UT on 2023-06-18 (5.1 hours before the ZTF discovery) with a magnitude of 18.77+/- 0.06 in the GOTO L-band (400 â 700nm). The source was not detected in the previous epoch at 23:50:30 UT on 2023-06-17 to a 5-sigma limiting magnitude of L > 20.3. The measured rise is therefore > 1.5 magnitudes in 1h45m, and constrains the onset to between these two epochs. The GOTO L-band is approximately g+r, and therefore taking the first ZTF epoch of detection to be L ~ 19.5, our detection implies a fading rate of ~0.75 mag over 0.2 days - significantly faster than the 1mag/day between the two ZTF epochs.\n\n\nImages were processed immediately after acquisition using the GOTO pipeline. Difference imaging was performed using recent survey observations of the same pointings. Magnitudes were calibrated using ATLAS-REFCAT2 (Tonry et al. 2018) and not corrected for Galactic extinction.\n\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\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg3MjA0MzU5LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.hafiPA1A2Nl2U4FrIGMH7KInYtvk-oiGdc8-i01qcc8\n\n",
"published": "2023-06-19T19:52:44.911260Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-19T19:52:44.911279Z",
"modified": "2023-06-19T19:52:44.916818Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 416,
"topic": "gcn.circular",
"uuid": "c0d99795-1243-4127-9b8d-89a3657caa42",
"title": "GRB 230618A: Osservatorio Astronomico Nastro verde upper limit",
"submitter": "Hop gcn.circular",
"authors": "Nello Ruocco at Osservatorio Nastro Verde - Sorrento (Naples) - Italy - MPC Code C82 <osservatorionastroverde@gmail.com>",
"data": {
"date": "23/06/19 20:14:40 GMT",
"from": "Nello Ruocco at Osservatorio Nastro Verde - Sorrento (Naples) - Italy - MPC Code C82 <osservatorionastroverde@gmail.com>",
"title": "GCN CIRCULAR",
"number": "34024",
"subject": "GRB 230618A: Osservatorio Astronomico Nastro verde upper limit"
},
"message_text": "Nello Ruocco at Osservatorio Nastro Verde - Sorrento (Naples) - Italy\nin a large collaboration with:\nM.G. Dainotti (National Astronomical Observatory of Japan),\nY. Niino (Tokyo University, Institute of Astronomy),\nK. Kalinowski (Aarhus University, Department of Physics and Astronomy),\nB. De Simone (Universita' degli Studi Di Salerno)\nreport:\n\nWe image the field of GRB 230618A detected by SWIFT (Page et al., GCN 33989)\nwith telescope of Nastro Verde Observatory - Sorrento (Naples), Italy. Member of:\nAAVSO - American Association of Variable Star Observers.\nUAI/SSV - Unione Astrofili Italiani/sezione stelle variabili.\nAstroCampania Associazione\n\nObservations began at 21:02 UT on 2023/06/18, 19 hours after GRB's detection,\nwith principal telescope SC 0.35 f/10 with focal reduced + CCD Sbig ST10 XME\nI took 24 image of 60 sec each. All images are unfiltered, calibrated with masterdark and masterflat,stacked with Tycho Tracker software\nWe have not detected any clearly visible sources, up to 20.3th magnitude with clear sky at\nRA(J2000) = 13h 06m 24.75s\nDec(J2000) = +03d 18' 09.3\"\non a field of view 23.3 x 15.7 arcmin\n Start End Rlim\n21:02:25 UT 21:29:28 UT 20.3\n\n\n\n\n\nMagnitudes were estimated with the Gaia DR2 cat. and\nare not corrected for galactic dust extinction.\n\n\n\nThe message may be cited.\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg3MjA1Njg2LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.cOidaD3ZUaeVri7PgslaHIwwi0Odx_HbX-6xnLosfsI\n\n",
"published": "2023-06-19T20:14:52.473777Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-19T20:14:52.473802Z",
"modified": "2023-06-19T20:14:52.481679Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 417,
"topic": "gcn.circular",
"uuid": "bc0223c9-010b-462e-9cc2-68afb338b4c6",
"title": "ZTF23aaoohpy/AT2023lcr: GROWTH-India Telescope follow-up observations",
"submitter": "Hop gcn.circular",
"authors": "Vishwajeet Swain at IIT Bombay <vishwajeet.s@iitb.ac.in>",
"data": {
"date": "23/06/19 21:18:43 GMT",
"from": "Vishwajeet Swain at IIT Bombay <vishwajeet.s@iitb.ac.in>",
"title": "GCN CIRCULAR",
"number": "34025",
"subject": "ZTF23aaoohpy/AT2023lcr: GROWTH-India Telescope follow-up observations"
},
"message_text": "H. Kumar, V. Swain, A Salgundi, V. Bhalerao (IITB), G.C. Anupama, S. Barway (IIA) and K. Angail (IAO) report on behalf of the GIT team:\n\nWe observed the field of ZTF23aaoohpy/AT2023lcr (Swain et al., GCN 34022) with 0.7m GROWTH-India Telescope (GIT). We obtained multiple frames of 300 sec each in the g', r' and i' band. We detected the source in our stacked images and got the following photometric results:\n\n----------------------------------------------------------------------\n\nJD (mid) | Filter | Exposure (s) | Magnitude (AB) |\n\n----------------------------------------------------------------------\n\n2460115.234132 | r' | 10 x 300 | 20.67 +/- 0.07 |\n2460115.279899 | g' | 7 x 300 | 21.37 +/- 0.15 |\n2460115.306489 | i' | 5 x 300 | 20.70 +/- 0.17 |\n\n----------------------------------------------------------------------\n\nA comparison of GIT photometry with ZTF (Swain et al, GCN 34022) and GOTO (Gompertz et al, GCN 34023) observations, we confirm that the candidate is decying fast and is redder in color.\n\nThe 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 the operations of the telescope. Telescope technical details are available at https://sites.google.com/view/growthindia/.\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg3MjA5NTI5LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.wy1zebISlk-81i_7Gtwz-GmGdfRq53FkuIuAO9x6kbs\n\n",
"published": "2023-06-19T21:18:54.401056Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-19T21:18:54.401088Z",
"modified": "2023-06-19T21:18:54.408162Z",
"nonlocalizedevents": [],
"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",
"nonlocalizedevents": [
{
"event_id": "S230619a"
}
],
"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",
"nonlocalizedevents": [
{
"event_id": "S230619a"
}
],
"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",
"nonlocalizedevents": [
{
"event_id": "S230619b"
}
],
"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",
"nonlocalizedevents": [
{
"event_id": "S230619b"
}
],
"targets": []
},
{
"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",
"nonlocalizedevents": [],
"targets": []
},
{
"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",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 424,
"topic": "hermes.message",
"uuid": "03ca384f-c734-4e58-b281-5444fa667ccd",
"title": "INTEGRAL follow-up of S230619bg",
"submitter": "Volodymyr Savchenko",
"authors": "",
"data": {},
"message_text": "INTEGRAL follow-up of S230619bg at 2023-06-19T23:41:07.000\n\n\nSPI-ACS excesses:\nat T0+-0.32 FAP = 0.022\nat T0+-8.57 FAP = 0.3\nat T0+-87.57 FAP = 0.355\nat T0+-1.77 FAP = 0.611\nat T0+120.23 FAP = 0.793\n\n\n\n\nnext break in data in 23 hr: 2023-06-20T22:34:13, for 9.3 hr",
"published": "2023-06-19T23:53:34.873713Z",
"message_parser": "Hermes Message Parser v2",
"retracted": false,
"created": "2023-06-19T23:53:34.873746Z",
"modified": "2023-06-19T23:53:34.879119Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 425,
"topic": "gcn.circular",
"uuid": "8e074897-9345-41a0-a4f9-bb28272c319b",
"title": "ZTF23aaoohpy/AT2023lcr: OHP/T193 and OHP/T120 optical follow-up observations",
"submitter": "Hop gcn.circular",
"authors": "Damien Turpin at CEA-Saclay <dturpin-astro@hotmail.com>",
"data": {
"date": "23/06/20 00:15:55 GMT",
"from": "Damien Turpin at CEA-Saclay <dturpin-astro@hotmail.com>",
"title": "GCN CIRCULAR",
"number": "34030",
"subject": "ZTF23aaoohpy/AT2023lcr: OHP/T193 and OHP/T120 optical follow-up observations"
},
"message_text": "T. Adami (ENS/Saclay, LAM/Pytheas/AMU), C. Adami (LAM/Pytheas/AMU),\nD. Turpin, E. Le Floc'h (CEA Paris-Saclay), J. T. Palmerio, \nS. D. Vergani (GEPI, Obs. de Paris), B. Schneider (MIT),\nS. Basa (LAM), D. Götz (CEA Paris-Saclay), report on behalf of a \nlarger collaboration:\n\nWe observed the field of ZTF23aaoohpy/AT2023lcr (Swain et al., GCN 34022, \nGompertz et al., GCN34023, Kumar et al., GCN34025)using the T193cm \nand T120cm telescopes at Observatoire de Haute-Provence (France) \nrespectively equipped with the MISTRAL spectro-imager and the T120 CCD camera. \nA total of 8 exposures were obtained in the imaging mode of MISTRAL in \nthe r-band filter (1x360s +7x600s). Observations were made \nfrom 2023-06-19 21:13:47.60 UT to 2023-06-19T22:37:40.86 UT \n(mid time ~1.85d after the T_GOTO = 2023-06-18 01:27:41 \n(Gompertz et al., GCN34023)). \nA total of 16 exposures were also obtained with the T120 CCD camera \nin the R-band filter (1x300s +8x450s, mid time ~ T_GOTO+1.83d) \nand V-band (7x600s, mid time ~ T_GOTO+1.88d). \n\nIn the coadded images, we measured the following magnitudes:\n----------------------------------------------------------------------\nJD (mid) | Telescope | Filter | Exposure (s) | Magnitude (AB) |\n----------------------------------------------------------------------\n2460115.3875 | OHP-T120 | R | 3900 | 20.70 +/- 0.12 | \n2460115.413706 | OHP-T193/MISTRAL | r' | 4560 | 20.84 +/- 0.04 | \n2460115.440972 | OHP-T120 | V | 4200 | 20.85 +/- 0.07 | \n----------------------------------------------------------------------\nThe photometric calibration was performed using nearby stars \nfrom the PS1 catalog and the magnitudes are not corrected for \nGalactic extinction.\n\nOur measurements confirm that the source is fading at a mag rate ~ 0.9 mag/day\ncompared to the last r magnitude reported by ZTF (Swain et al., GCN 34022).\nThe red color of this transient g-r ~ 0.3 and its confirmed fast-fading evolution\nare consistent with a Gamma-ray Burst afterglow emission.\n\nWe strongly encourage spectroscopic follow-up of this source in order to identify \nits astrophysical origin.\n\nAdditional I-band follow-up observation will be performed at OHP this night. \n\nWe acknowledge the excellent support from Observatoire de Haute-Provence, \nin particular Yoann Degot Longhi for the MISTRAL observations, Gavin Coleman\nthe observer using the T193/SOPHIE instrument who allowed us to perform \nthese ToO observations as well as Pascal Gallais, Antoine Claret and \nMatthias Tornay for the T120 observations.\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg3MjIwMTYwLCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.v52mkpcjb6muM_C5v4EGUTVEucgSEnxGwndQshKkmRI\n\n",
"published": "2023-06-20T00:16:05.716656Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-20T00:16:05.716699Z",
"modified": "2023-06-20T00:16:05.727039Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 426,
"topic": "gcn.circular",
"uuid": "3ef51aaa-05c3-45d9-9076-87a6c0631e32",
"title": "ZTF23aaoohpy/AT2023lcr: Liverpool Telescope detection",
"submitter": "Hop gcn.circular",
"authors": "Daniel Perley at Liverpool JMU <d.a.perley@ljmu.ac.uk>",
"data": {
"date": "23/06/20 00:47:30 GMT",
"from": "Daniel Perley at Liverpool JMU <d.a.perley@ljmu.ac.uk>",
"title": "GCN CIRCULAR",
"number": "34031",
"subject": "ZTF23aaoohpy/AT2023lcr: Liverpool Telescope detection"
},
"message_text": "Daniel A. Perley (LJMU), Maggie Li (Cornell), and Anna Y. Q. Ho (Cornell) report:\n\nWe obtained Liverpool Telescope follow-up imaging observations of the fast optical transient ZTF23aaoohpy/AT2023lcr (Swain et al., GCN 34022) on the night of 2023-06-19. Observations were conducted in g/r/i filters between UT 22:15-22:29 and in u/r/z filters between 22:47-23:05.\n\nThe source is well-detected in the g, r, i, and z filters. We measure photometry of:\n\nMJD magnitude\n60114.92765 g = 21.32 +/- 0.08\n60114.93103 r = 20.88 +/- 0.06\n60114.93440 i = 20.68 +/- 0.06\n60114.94962 r = 21.04 +/- 0.06\n60114.95300 z = 20.47 +/- 0.10\n60114.95733 u > 21.3\n\nThe photometry is well-fit by a power-law with spectral index (F_nu ~ nu^beta) of beta ~ -1.2, consistent with GRB afterglows.\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg3MjIyMDU2LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.iIQViJ2y4Bk8obkmMNjUTAWq7hzjxxOfwfPXOY9AcmU\n\n",
"published": "2023-06-20T00:47:41.866920Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-20T00:47:41.866939Z",
"modified": "2023-06-20T00:47:41.872978Z",
"nonlocalizedevents": [],
"targets": []
},
{
"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",
"nonlocalizedevents": [],
"targets": []
},
{
"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",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 429,
"topic": "hermes.message",
"uuid": "a7450227-0997-454d-b30b-1cbbee942657",
"title": "INTEGRAL follow-up of S230620g",
"submitter": "Volodymyr Savchenko",
"authors": "",
"data": {},
"message_text": "INTEGRAL follow-up of S230620g at 2023-06-20T01:12:17.000\n\n\nSPI-ACS excesses:\nat T0+132.38 FAP = 0.373\nat T0+-81.47 FAP = 0.615\n\n\n\n\nnext break in data in 21 hr: 2023-06-20T22:34:13, for 9.3 hr",
"published": "2023-06-20T01:24:40.498489Z",
"message_parser": "Hermes Message Parser v2",
"retracted": false,
"created": "2023-06-20T01:24:40.498509Z",
"modified": "2023-06-20T01:24:40.503385Z",
"nonlocalizedevents": [],
"targets": []
},
{
"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",
"nonlocalizedevents": [
{
"event_id": "S230619a"
}
],
"targets": []
},
{
"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",
"nonlocalizedevents": [
{
"event_id": "S230620g"
}
],
"targets": []
},
{
"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",
"nonlocalizedevents": [],
"targets": []
},
{
"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",
"nonlocalizedevents": [],
"targets": []
},
{
"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",
"nonlocalizedevents": [],
"targets": []
},
{
"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",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 436,
"topic": "hermes.message",
"uuid": "1e4d2a1d-771b-44e1-b0f5-dc0c0adac5c4",
"title": "INTEGRAL follow-up of S230620w",
"submitter": "Volodymyr Savchenko",
"authors": "",
"data": {},
"message_text": "INTEGRAL follow-up of S230620w at 2023-06-20T03:14:44.000\n\n\nSPI-ACS excesses:\nat T0+-9.46 FAP = 0.193\nat T0+-111.18 FAP = 0.519\nat T0+12.04 FAP = 0.623\nat T0+71.12 FAP = 0.735\nat T0+59.09 FAP = 0.785\n\n\n\n\nnext break in data in 19 hr: 2023-06-20T22:34:13, for 9.3 hr",
"published": "2023-06-20T03:27:30.023799Z",
"message_parser": "Hermes Message Parser v2",
"retracted": false,
"created": "2023-06-20T03:27:30.023819Z",
"modified": "2023-06-20T03:27:30.028919Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 437,
"topic": "hermes.message",
"uuid": "d27fa546-aede-4fb1-b19d-df1f1ff244bb",
"title": "INTEGRAL follow-up of S230620z",
"submitter": "Volodymyr Savchenko",
"authors": "",
"data": {},
"message_text": "INTEGRAL follow-up of S230620z at 2023-06-20T03:19:49.000\n\n\nSPI-ACS excesses:\nat T0+30.57 FAP = 0.045\nat T0+53.34 FAP = 0.163\nat T0+-3.68 FAP = 0.221\nat T0+-47.78 FAP = 0.298\n\n\n\n\nnext break in data in 19 hr: 2023-06-20T22:34:13, for 9.3 hr",
"published": "2023-06-20T03:32:15.747141Z",
"message_parser": "Hermes Message Parser v2",
"retracted": false,
"created": "2023-06-20T03:32:15.747182Z",
"modified": "2023-06-20T03:32:15.752962Z",
"nonlocalizedevents": [],
"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",
"nonlocalizedevents": [
{
"event_id": "S230619b"
}
],
"targets": []
},
{
"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",
"nonlocalizedevents": [
{
"event_id": "S230620w"
}
],
"targets": []
},
{
"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",
"nonlocalizedevents": [
{
"event_id": "S230620z"
}
],
"targets": []
},
{
"id": 441,
"topic": "igwn.gwalert",
"uuid": "70a40d17-455d-4805-9675-c35b0e7ffb8c",
"title": "S230620ad - PRELIMINARY",
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"authors": "LVK",
"data": {
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"sequence_num": 1,
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},
"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",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 442,
"topic": "igwn.gwalert",
"uuid": "749d478b-7779-4174-95d2-8faa0174ff22",
"title": "S230620ad - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
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"group": "CBC",
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"duration": null,
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"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",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 443,
"topic": "hermes.message",
"uuid": "97add04b-667e-43eb-9afe-0655420455d0",
"title": "INTEGRAL follow-up of S230620ad",
"submitter": "Volodymyr Savchenko",
"authors": "",
"data": {},
"message_text": "INTEGRAL follow-up of S230620ad at 2023-06-20T03:50:54.000\n\n\nSPI-ACS excesses:\nat T0+-19.53 FAP = 0.201\nat T0+17.05 FAP = 0.257\nat T0+176.25 FAP = 0.481\nat T0+-6.0 FAP = 0.522\nat T0+-11.18 FAP = 0.822\nat T0+-75.1 FAP = 0.872\nat T0+-37.88 FAP = 0.942\n\n\n\n\nnext break in data in 19 hr: 2023-06-20T22:34:13, for 9.3 hr",
"published": "2023-06-20T04:07:28.792284Z",
"message_parser": "Hermes Message Parser v2",
"retracted": false,
"created": "2023-06-20T04:07:28.792302Z",
"modified": "2023-06-20T04:07:28.797447Z",
"nonlocalizedevents": [],
"targets": []
},
{
"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",
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"area_90": 3849.839950583623,
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"pipeline": "CWB",
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"classification": {},
"skymap_version": 0,
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"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",
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"targets": []
},
{
"id": 445,
"topic": "igwn.gwalert",
"uuid": "eb7b13ef-eafb-4e33-a066-9c6004c7fc0a",
"title": "S230620af - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
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"time_created": "2023-06-20T04:37:08Z",
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},
"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",
"nonlocalizedevents": [],
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},
{
"id": 446,
"topic": "hermes.message",
"uuid": "96a6a351-4881-4b3f-8fbd-53c2507319cd",
"title": "INTEGRAL follow-up of S230620af",
"submitter": "Volodymyr Savchenko",
"authors": "",
"data": {},
"message_text": "INTEGRAL follow-up of S230620af at 2023-06-20T04:30:42.000\n\n\nSPI-ACS excesses:\nat T0+-8.98 FAP = 0.139\nat T0+-1.3 FAP = 0.468\nat T0+-102.88 FAP = 0.512\nat T0+144.77 FAP = 0.739\nat T0+-109.48 FAP = 0.767\nat T0+-41.03 FAP = 0.989\nat T0+15.8 FAP = 0.992\n\n\n\n\nnext break in data in 18 hr: 2023-06-20T22:34:13, for 9.3 hr",
"published": "2023-06-20T04:43:15.743032Z",
"message_parser": "Hermes Message Parser v2",
"retracted": false,
"created": "2023-06-20T04:43:15.743052Z",
"modified": "2023-06-20T04:43:15.748056Z",
"nonlocalizedevents": [],
"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",
"nonlocalizedevents": [
{
"event_id": "S230620a"
}
],
"targets": []
},
{
"id": 448,
"topic": "igwn.gwalert",
"uuid": "12e14208-312f-491f-9174-8264e0c645cd",
"title": "S230620al - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230620al/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230620al/view/"
},
"event": {
"far": 1.40103e-06,
"time": "2023-06-20T05:54:55.410Z",
"group": "Burst",
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"external_coinc": null
},
"message_text": "",
"published": "2023-06-20T05:56:07.691654Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-20T05:56:07.691679Z",
"modified": "2023-06-20T05:56:07.698544Z",
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"targets": []
},
{
"id": 449,
"topic": "igwn.gwalert",
"uuid": "d85a5700-5f1b-4dca-a3fc-758bb0ecd605",
"title": "S230620al - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230620al/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230620al/view/"
},
"event": {
"far": 1.40103e-06,
"time": "2023-06-20T05:54:55.410Z",
"group": "Burst",
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"area_90": 11609.948994206072,
"duration": 0.017939,
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"properties": {},
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"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-06-20T06:00:40Z",
"superevent_id": "S230620al",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-20T06:00:41.291041Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-20T06:00:41.291068Z",
"modified": "2023-06-20T06:00:41.296048Z",
"nonlocalizedevents": [],
"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",
"nonlocalizedevents": [
{
"event_id": "S230620a"
}
],
"targets": []
},
{
"id": 451,
"topic": "hermes.message",
"uuid": "9c2c191b-b605-4b53-8982-7f140401aba3",
"title": "INTEGRAL follow-up of S230620al",
"submitter": "Volodymyr Savchenko",
"authors": "",
"data": {},
"message_text": "INTEGRAL follow-up of S230620al at 2023-06-20T05:54:55.000\n\n\nSPI-ACS excesses:\nat T0+1.73 FAP = 0.046\nat T0+10.7 FAP = 0.062\nat T0+4.23 FAP = 0.089\nat T0+-10.05 FAP = 0.213\nat T0+-6.07 FAP = 0.329\nat T0+-245.97 FAP = 0.832\n\n\n\n\nnext break in data in 17 hr: 2023-06-20T22:34:13, for 9.3 hr",
"published": "2023-06-20T06:07:39.399216Z",
"message_parser": "Hermes Message Parser v2",
"retracted": false,
"created": "2023-06-20T06:07:39.399332Z",
"modified": "2023-06-20T06:07:39.405885Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 452,
"topic": "igwn.gwalert",
"uuid": "8a51105a-fb8b-46d6-8795-56ed330dddcf",
"title": "S230620au - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230620au/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230620au/view/"
},
"event": {
"far": 1.014346640027957e-05,
"time": "2023-06-20T11:57:50.083Z",
"group": "CBC",
"search": "AllSky",
"area_50": 949.0312893225271,
"area_90": 3440.264651720573,
"duration": null,
"pipeline": "gstlal",
"properties": {
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"HasMassGap": 0.026260429225946468,
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},
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],
"significant": false,
"skymap_hash": "14ba95d825bbf49f92e77a5902c45598",
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"BNS": 1.964562622261217e-13,
"NSBH": 1.4369434601219219e-11,
"Terrestrial": 0.8195197300955765
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-06-20T11:58:13Z",
"superevent_id": "S230620au",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-20T11:58:14.679885Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-20T11:58:14.679910Z",
"modified": "2023-06-20T11:58:14.686872Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 453,
"topic": "igwn.gwalert",
"uuid": "cf27c683-7600-4370-a4c3-c3fee7edd695",
"title": "S230620au - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230620au/files/bayestar.multiorder.fits,1",
"gracedb": "https://gracedb.ligo.org/superevents/S230620au/view/"
},
"event": {
"far": 4.428168898393816e-06,
"time": "2023-06-20T11:57:50.083Z",
"group": "CBC",
"search": "AllSky",
"area_50": 945.0446445077741,
"area_90": 3422.639485171139,
"duration": null,
"pipeline": "gstlal",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.026260429225946468,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "f9ff4caea6d713d2ffae631f16e25715",
"classification": {
"BBH": 0.3277541846472889,
"BNS": 3.529486556025029e-13,
"NSBH": 2.5822165650454448e-11,
"Terrestrial": 0.672245815326536
},
"skymap_version": 1,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-06-20T12:02:48Z",
"superevent_id": "S230620au",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-20T12:02:48.873006Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-20T12:02:48.873032Z",
"modified": "2023-06-20T12:02:48.878139Z",
"nonlocalizedevents": [],
"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",
"nonlocalizedevents": [
{
"event_id": "S230615a"
}
],
"targets": []
},
{
"id": 455,
"topic": "gcn.circular",
"uuid": "cb2b7dae-8c1f-4388-85bd-be08a215e197",
"title": "ZTF23aaoohpy/AT2023lcr: Xinglong-2.16m optical observations",
"submitter": "Hop gcn.circular",
"authors": "Dong Xu at NAOC/CAS <dxu@nao.cas.cn>",
"data": {
"date": "23/06/20 16:31:09 GMT",
"from": "Dong Xu at NAOC/CAS <dxu@nao.cas.cn>",
"title": "GCN CIRCULAR",
"number": "34040",
"subject": "ZTF23aaoohpy/AT2023lcr: Xinglong-2.16m optical observations"
},
"message_text": "S.Q. Jiang, S.Y. Fu, Z.P. Zhu, X. Liu, T.H. Lu, D. Xu (NAOC) report:\n\nWe observed the field of ZTF23aaoohpy/AT2023lcr (Swain et al., GCN 34022) using the 2.16m telescope located at Xinglong, Hebei, China, equipped with the BFOSC camera. Observations started at 12:39:19 UT on 2023-06-20, i.e., 2.47 day after the T_GOTO 23-06-18 01:27:41 (Gompertz et al., GCN34023), and 8x300 s frames were obtained in the R-band.\n\nThe previously reported optical transient (e.g., Swain et al., GCN 34022, Gompertz et al., GCN34023, Kumar et al., GCN34025, Adami et al., GCN34030, Perley et al., GCN34031) is detected in our coadded image with m(R) = 21.34 +/- 0.14 at 60115.5432 (MJD), calibrated with the nearby Pan-STARRS field.\n\nWe thank the great support of the Xinglong-2.16m staff.\n\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg3Mjc4Njc1LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.2YKYNaGYJHbCDOJ3LiHNQV52VWiXMo-ibqS7TwzAdjI\n\n",
"published": "2023-06-20T16:31:20.796158Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-20T16:31:20.796179Z",
"modified": "2023-06-20T16:31:20.803444Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 456,
"topic": "gcn.circular",
"uuid": "47ed3986-bb26-4b1a-bcb5-c80c8ac60774",
"title": "ZTF23aaoohpy/AT2023lcr: Keck/LRIS spectroscopy and redshift",
"submitter": "Hop gcn.circular",
"authors": "Daniel Perley at Liverpool JMU <d.a.perley@ljmu.ac.uk>",
"data": {
"date": "23/06/20 18:20:09 GMT",
"from": "Daniel Perley at Liverpool JMU <d.a.perley@ljmu.ac.uk>",
"title": "GCN CIRCULAR",
"number": "34041",
"subject": "ZTF23aaoohpy/AT2023lcr: Keck/LRIS spectroscopy and redshift"
},
"message_text": "Daniel A. Perley (LJMU), Igor Andreoni (JSI/UMD/NASA-GSFC), Kareem El-Badry (CIT), Ilaria Caiazzo (CIT), Michael Coughlin (UMN), Mansi Kasliwal (CIT), and Zach Vanderbosch (CIT) report:\n\nWe observed the fast optical transient ZTF23aaoohpy/ATLAS23msn/AT2023lcr (Swain et al., GCN 34022; Gompertz et al., GCN34023; Kumar et al., GCN34025; Perley et al, GCN 34031; Fulton et al., AstroNote 2023-179) with the Low Resolution Imaging Spectrometer (LRIS) at W. M. Keck Observatory. Observations started on 2023 June 20 at 07:22 UT. The exposure time was 2x1200s and 3x800s in the blue and red arms of LRIS, respectively. Observations employed the 600/4000 blue grism and 600/7500 red grating, providing continuous wavelength coverage from 3140 to 8784 Angstroms. Data were reduced using LPipe (Perley, 2019).\n\nThe spectrum shows a simple continuum, well-fit by a simple power-law of f_lamba~lambda^-1. The signal-to-noise ratio is about 20 per resolution element (although lower blueward of 4000 Angstroms). We detect clear (but weak) absorption lines at observer-frame wavelengths of 5688 and 5683 Angstroms which we attribute to the redshifted MgII(2796,2803) doublet at z=1.0272. Weak absorption from FeII 2344 and FeII 2383 at a consistent redshift is also detected. We also detect a possible intervening MgII absorber at z=0.7795. No other lines are apparent in the spectrum.\n\nBased on this information, we propose z=1.0272 as the redshift of this event. While strictly this redshift is only a lower limit, the absence of any higher-redshift absorption features suggests that a higher-redshift origin is unlikely. The lack of Lyman-alpha absorption over the spectral range imposes a redshift upper limit of z<1.6. In either case, the spectroscopy confirms this to be an intrinsically very luminous, fast-rising event with a power-law SED characteristic of synchtrotron radiation, similar in nature to GRB afterglows.\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg3Mjg1MjQ1LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.wRjg33LV0SROijZT0JJfMP0lD3yO2bTbYb7YWQozZhM\n\n",
"published": "2023-06-20T18:20:51.030809Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-20T18:20:51.030851Z",
"modified": "2023-06-20T18:20:51.038656Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 457,
"topic": "gcn.circular",
"uuid": "04c58e38-8722-46f2-b11d-7e2ef195b05b",
"title": "AT2023lcr: Pan-STARRS & ATLAS Observations",
"submitter": "Hop gcn.circular",
"authors": "Michael Fulton at Queen's U, Belfast <mfulton07@qub.ac.uk>",
"data": {
"date": "23/06/20 18:50:23 GMT",
"from": "Michael Fulton at Queen's U, Belfast <mfulton07@qub.ac.uk>",
"title": "GCN CIRCULAR",
"number": "34042",
"subject": "AT2023lcr: Pan-STARRS & ATLAS Observations"
},
"message_text": "M. D. Fulton (QUB), S. J. Smartt (Oxford/QUB), T.-W. Chen (TUM), K. W. Smith, S. Srivastav, D. R. Young, M. Nicholl, M. McCollum, T. Moore, J. Weston, X. Sheng (QUB), A. Aamer (QUB/Birmingham), L. Shingles (GSI/QUB), H. Stevance, L. Rhodes, A. Andersson (Oxford), K. C. Chambers, M. E. Huber, A. S. B. Schultz, T. de Boer, J. Bulger, J. Fairlamb, H. Gao, C. C. Lin, T. Lowe, E. Magnier, P. Minguez, I. A. Smith, R. J. Wainscoat, L. Denneau, J. Tonry, H. Weiland, A. Lawrence, R. Siverd (IfA, University of Hawaii), N. Erasmus, W. Koorts (South African Astronomical Observatory), A. Jordan, V. Suc (UAI, Obstech), A. Rest (STScI), C. Stubbs (Harvard), J. Sommer (LMU/QUB)\n\nWe note that the transient reported by Swain et al. (Astronote 2023-178, GCN34022) as ZTF23aaoohpy/AT2023lcr was discovered by ATLAS and reported to the transient name server before the ZTF announcement (ATLAS23msn; Tonry et al. 2023, TNS Astronomical Transient Report No. 180429). ATLAS discovered the object, and the ZTF team (Swain et al.) discovered the fast-fading nature (see Fulton et al. Astronote #2023-179). The fast-fading nature was confirmed by GOTO survey operations (Gompertz et al. GCN 34023).\n\nHere we report Pan-STARRS targeted follow-up observations and ATLAS survey data. Observations were performed during the early hours of 2023-06-20 between 07:34:15.74 UTC and 08:15:20.74 UTC in g/r/i/z filters.\n\nThe transient is well detected in the g, r, i, and z filters, and we measure the following epochs through forced photometry.\n| MJD | Inst. | Filter | Mag +/- MagErr |\n|:---------:|:----------:|:------:|:--------------:|\n| 60113.405 | ATLAS | c | 19.3 +/- 0.1 |\n| 60115.318 | Pan-STARRS | g | 21.5 +/- 0.1 |\n| 60115.333 | Pan-STARRS | r | 21.2 +/- 0.1 |\n| 60115.338 | Pan-STARRS | i | 20.9 +/- 0.1 |\n| 60115.343 | Pan-STARRS | z | 20.8 +/- 0.1 |\nNote that the ATLAS filter c is a g+r composite. To a reasonable approximation, c = (g+r)/2.\n\n\nOperation of the Pan-STARRS1 and Pan-STARRS2 telescopes is primarily supported by the National Aeronautics and Space Administration under Grant No. NNX12AR65G and Grant No. NNX14AM74G issued through the SSO Near-Earth Object Observations Program. Data are processed at Queen's University Belfast enabled through the STFC grants ST/P000312/1 and ST/T000198/1.\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.\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg3Mjg3MDI4LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.uOzRTbfeRcvP6aegZWUSZYRb04hxszsNIFpauYTJDBI\n\n",
"published": "2023-06-20T18:50:34.789469Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-20T18:50:34.789488Z",
"modified": "2023-06-20T18:50:34.797417Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 458,
"topic": "gcn.circular",
"uuid": "22e01ed5-431d-4493-a690-4976bee08d5c",
"title": "AT2023lcr (ATLAS23msn/ZTF23aaoohpy): Kinder observations with Lulin observatory and a probable plateau in the g-band light curve",
"submitter": "Hop gcn.circular",
"authors": "Ting-Wan Chen at MPE <janet.chen@astro.su.se>",
"data": {
"date": "23/06/20 19:21:32 GMT",
"from": "Ting-Wan Chen at MPE <janet.chen@astro.su.se>",
"title": "GCN CIRCULAR",
"number": "34043",
"subject": "AT2023lcr (ATLAS23msn/ZTF23aaoohpy): Kinder observations with Lulin observatory and a probable plateau in the g-band light curve"
},
"message_text": "T.-W. Chen (TUM), S. Yang (HNAS), A.-L. Tsai, W.-P. Chen, W.-J. Hou, H.-Y. Hsiao, C.-C. Ngeow, C.-S. Lin, Y.-C. Pan, H.-C. Lin, and J.-K. Guo (all NCUIA) report:\n\nWe observed the field of AT 2023lcr, an orphan transient discovered by the ATLAS survey as ATLAS23msn (Tonry et al. TNS Astronomical Transient Report No. 180429; Fulton et al. AstroNote 2023-179). Its fast fading and red nature was identifed and reported by Swain et al. (GCN 34022) as ZTF23aaoohpy.\n\nWe used the 40cm SLT and 1-m LOT at Lulin Observatory, Taiwan to obtain r and g-band images of AT 2023lcr, as part of the Kinder collaboration (Chen et al., AstroNote 2021-92).\n\nThe first SLT epoch of observations started at 18:22 UT on 19 of June 2023 (MJD = 60114.765), 1.36 days after the ATLAS discovery. The images were combined from 18 frames with a 300-second exposure time for the r band, taken under seeing conditions of an average of 1.64\" and at a median airmass of 2.08. For the LOT observations, the first epoch started later at 19:29 UT on 19 of June 2023 (MJD = 60114.812). The images were combined from 8 frames with a 300-second exposure time for the g band, taken under seeing conditions of an average of 1.50\" and at a median airmass of 2.95. We used the Kinder pipeline (Yang et al. A&A 646, A22) to measure the PSF photometry of AT 2023lcr after template subtraction using the SDSS images. We obtained the following preliminary magnitudes (in the AB system):\n\ng = 21.41 +/- 0.16 mag, and\nr = 20.94 +/- 0.14 mag.\n\nThe given limit is derived based on calibrating against SDSS field stars and is not corrected for the expected Galactic foreground extinction corresponding to a reddening of E_(B-V) = 0.04 mag in the direction of the burst (Schlafly & Finkbeiner 2011).\n\nWe collected the light curve evolution of AT 2023lcr from all relevant photometric reports (Swain et al., GCN 34022; Gompertz et al. GCN 34023; Kumar et al., GCN 34025; Fulton et al., AstroNote 2023-179; Adami et al. GCN 34030; Perley et al. GCN 34031; Jiang et al., GCN 34040; Fulton et al., GCN 34042) to date, and the light curve plot can be found in the following link (https://photos.app.goo.gl/QpWzJse6NMozERjZ7) The magnitudes obtained from Lulin Observatory are in agreement with the mentioned reports and further support the evidence for a power-law decay in GRB afterglows. Moreover, we have noticed a potential 'plateau' in the g-band light curve, which occurs between the Lulin and PanSTARRS observations.\n\n\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg3Mjg4ODk4LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.UYCnAgLUzaGoLFsIHhZfyznc2Y60OE2oZ31lS4Mzn40\n\n",
"published": "2023-06-20T19:21:44.191265Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-20T19:21:44.191298Z",
"modified": "2023-06-20T19:21:44.198866Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 459,
"topic": "gcn.circular",
"uuid": "d1508cea-090e-40a6-adf9-30240f0616fe",
"title": "AT2023lcr: Neil Gehrels Swift Observatory X-ray detection",
"submitter": "Hop gcn.circular",
"authors": "Igor Andreoni at JSI/UMD/NASA <igor.andreoni@gmail.com>",
"data": {
"date": "23/06/20 20:28:00 GMT",
"from": "Igor Andreoni at JSI/UMD/NASA <igor.andreoni@gmail.com>",
"title": "GCN CIRCULAR",
"number": "34044",
"subject": "AT2023lcr: Neil Gehrels Swift Observatory X-ray detection"
},
"message_text": "Igor Andreoni (JSI/UMD/NASA-GSFC) reports on behalf of a larger collaboration\n\n\nFollow-up observations of the optical fast transient ATLAS23msn/ZTF23aaoohpy/AT2023lcr (Swain et al., GCN 34022; Gompertz et al., GCN34023; Kumar et al., GCN34025; Perley et al, GCN 34031; Perley et al., GCN 34041; Fulton et al., 34042; Chen et al., GCN 34043) were carried out with the Neil Gehrels Swift Observatory starting on 2023-06-20 12:57:02 UT until 2023-06-20 14:54:56 UT. The total exposure time on target was 3ks.\n\nA source was detected in Swift XRT data in the 0.3-10 keV energy range at a location compatible with AT2023lcr using HEASoft XIMAGE. The source has a background-subtracted count rate of (7.14 +/-1.8) * 10^(-3) ct/s.\n\nUsing WebPIMMS [1], we converted the count rate to flux assuming a powerlaw with photon index of 2, a redshift z=1.0272 (Perley et al, GCN 34041), and a Galactic NH of 3.16 * 10^(20) cm^(-2) [2]. The resulting flux in the 0.3-10 keV band is (2.49 +- 0.63) * 10^(-13) erg/s/cm^2.\n\nThe detection of an X-ray counterpart and the high optical luminosity implied by the redshift measurement (Perley et al., GCN 34041) further suggest that the fast optical transient AT2023lcr is the afterglow of a relativistic event.\n\n\nWe thank the Swift team for approving and scheduling ToO observations of this source (target ID 16083)\n\n[1] https://heasarc.gsfc.nasa.gov/cgi-bin/Tools/w3pimms/w3pimms.pl\n[2] HI4PI Collaboration, N. Ben Bekhti, L. Floer, et al., 2016, Astronomy & Astrophysics, 594, A116 (HI4PI Map)\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg3MjkyODg1LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.daNPQ-z7W3RsyKtNc5vXB265aUyR_hVmuy1AGWhEHn8\n\n",
"published": "2023-06-20T20:28:10.529923Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-20T20:28:10.529943Z",
"modified": "2023-06-20T20:28:10.537000Z",
"nonlocalizedevents": [],
"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",
"nonlocalizedevents": [
{
"event_id": "S230619b"
}
],
"targets": []
},
{
"id": 461,
"topic": "igwn.gwalert",
"uuid": "2d0bb833-81e7-41d0-b1cf-7796db396421",
"title": "S230621n - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230621n/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230621n/view/"
},
"event": {
"far": 3.961966339478609e-06,
"time": "2023-06-21T03:48:37.112Z",
"group": "CBC",
"search": "AllSky",
"area_50": 969.8038070415035,
"area_90": 3255.6200497741165,
"duration": null,
"pipeline": "pycbc",
"properties": {
"HasNS": 1.0,
"HasMassGap": 0.000689655172413793,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "7df40525d13160d7d10508bb56b3779c",
"classification": {
"BBH": 0.0004667742598606625,
"BNS": 0.0,
"NSBH": 0.004756157373822741,
"Terrestrial": 0.9947770683663166
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-06-21T03:49:00Z",
"superevent_id": "S230621n",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-21T03:49:01.360225Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-21T03:49:01.360250Z",
"modified": "2023-06-21T03:49:01.367374Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 462,
"topic": "igwn.gwalert",
"uuid": "2be5ebf5-abbf-49cb-8fe7-a505aaa789de",
"title": "S230621n - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230621n/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230621n/view/"
},
"event": {
"far": 3.961966339478609e-06,
"time": "2023-06-21T03:48:37.112Z",
"group": "CBC",
"search": "AllSky",
"area_50": 969.8038070415035,
"area_90": 3255.6200497741165,
"duration": null,
"pipeline": "pycbc",
"properties": {
"HasNS": 1.0,
"HasMassGap": 0.000689655172413793,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "7df40525d13160d7d10508bb56b3779c",
"classification": {
"BBH": 0.0004667742598606625,
"BNS": 0.0,
"NSBH": 0.004756157373822741,
"Terrestrial": 0.9947770683663166
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-06-21T03:53:35Z",
"superevent_id": "S230621n",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-21T03:53:36.195421Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-21T03:53:36.195446Z",
"modified": "2023-06-21T03:53:36.200466Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 463,
"topic": "igwn.gwalert",
"uuid": "de20ab28-b561-4ccf-a5d7-afcf56fe4c4a",
"title": "S230621ad - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230621ad/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230621ad/view/"
},
"event": {
"far": 1.7e-05,
"time": "2023-06-21T06:22:22.344Z",
"group": "Burst",
"search": "BBH",
"area_50": 616.0415355849965,
"area_90": 2667.2752044810886,
"duration": 0.009383,
"pipeline": "CWB",
"properties": {},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "5e188b6a28e5ff59602c0e124cf09651",
"classification": {},
"skymap_version": 0,
"central_frequency": 62.97945
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-06-21T06:23:28Z",
"superevent_id": "S230621ad",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-21T06:23:29.364921Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-21T06:23:29.364947Z",
"modified": "2023-06-21T06:23:29.372018Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 464,
"topic": "igwn.gwalert",
"uuid": "20405375-e095-48b2-a96d-5020914ce1a2",
"title": "S230621ad - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230621ad/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230621ad/view/"
},
"event": {
"far": 1.7e-05,
"time": "2023-06-21T06:22:22.344Z",
"group": "Burst",
"search": "BBH",
"area_50": 616.0415355849965,
"area_90": 2667.2752044810886,
"duration": 0.009383,
"pipeline": "CWB",
"properties": {},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "5e188b6a28e5ff59602c0e124cf09651",
"classification": {},
"skymap_version": 0,
"central_frequency": 62.97945
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-06-21T06:28:02Z",
"superevent_id": "S230621ad",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-21T06:28:03.526862Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-21T06:28:03.526905Z",
"modified": "2023-06-21T06:28:03.532771Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 465,
"topic": "gcn.circular",
"uuid": "c29385f7-42aa-40c3-849e-f2ef776d3a6b",
"title": "IPN triangulation of GRB 230616A (short)",
"submitter": "Hop gcn.circular",
"authors": "Dmitry Svinkin at Ioffe Institute <svinkin@mail.ioffe.ru>",
"data": {
"date": "23/06/21 09:19:52 GMT",
"from": "Dmitry Svinkin at Ioffe Institute <svinkin@mail.ioffe.ru>",
"title": "GCN CIRCULAR",
"number": "34046",
"subject": "IPN triangulation of GRB 230616A (short)"
},
"message_text": "A.S. Kozyrev, D.V. Golovin, M.L. Litvak, I.G. Mitrofanov, and A.B. Sanin\non behalf of the MGNS/BepiColombo and HEND/Mars Odyssey teams,\n\nJ. Benkhoff on behalf of the BepiColombo team,\n\nD. Svinkin, D. Frederiks, A. Ridnaia, A. Lysenko,\nand T. Cline on behalf of the Konus-Wind team,\n\nE. Burns on behalf of the IPN,\n\nE. Bozzo and C. Ferrigno, on behalf of the INTEGRAL SPI-ACS GRB team,\n\nS. Barthelmy, J. Cummings, H. Krimm, D. Palmer, and A. Tohuvavohu\non behalf of the Swift-BAT team,\n\nand\n\nW. Boynton, C. Fellows, K. Harshman, H. Enos, R. Starr,\nand A.S. Gardner on on behalf of the GRS-Odyssey GRB team,\nreport:\n\nThe bright, short-duration GRB 230616A\n(Swift-BAT/GUANO detection: Tohuvavohu et al., GCN Circ. 33982;\nAstroSat-CZTI detection: Waratkar et al., GCN Circ. 33983)\nwas detected by Swift (BAT), Konus-Wind, INTEGRAL (SPI-ACS),\nAstroSat (CZTI), Mars-Odyssey (HEND), and BepiColombo (MGNS)\nat about 74278 s UT (20:37:58).\nThe burst was outside the coded field of view of the BAT.\n\nWe have triangulated it to a preliminary, 3 sigma error box\nwhose coordinates are:\n---------------------------------------------\n RA(2000), deg Dec(2000), deg\n ---------------------------------------------\n Center:\n 192.035 (12h 48m 08s) +5.683 ( +5d 40' 57\")\n Corners:\n 192.022 (12h 48m 05s) +5.663 ( +5d 39' 46\")\n 192.049 (12h 48m 12s) +5.714 ( +5d 42' 49\")\n 192.048 (12h 48m 12s) +5.702 ( +5d 42' 08\")\n 192.022 (12h 48m 05s) +5.652 ( +5d 39' 06\")\n ---------------------------------------------\nThe error box area is 0.9 sq. arcmin, and its maximum\ndimension is 4 arcmin (the minimum one is 0.3 arcmin).\nThe Sun distance was 103 deg.\n\nThis box may be improved.\n\nThe Swift-XRT sources (D'Avanzo et al., GCN Circ. 34006)\nare outside the IPN box.\nThere are no obvious catalogued host galaxies\n(from GLADE+ catalog; Dalya et al., MNRAS 514, 1, 1403, 2022)\ninside the box.\n\nA triangulation map is posted at\nhttp://www.ioffe.ru/LEA/GRBs/GRB230616_T74278/IPN\n\nThe Konus-Wind time history and spectrum will be given in a forthcoming\nGCN Circular.\n\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg3MzM5MTk4LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.Oy-K896aFKs-1r9xOs1MEocnxY55sUSKcGaQYAA2eXk\n\n",
"published": "2023-06-21T09:20:04.089278Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-21T09:20:04.089298Z",
"modified": "2023-06-21T09:20:04.096886Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 466,
"topic": "gcn.circular",
"uuid": "f78c5f1b-4a40-4a95-bf23-4d2e73218b42",
"title": "ZTF23aaoohpy/AT2023lc: Mondy optical observations",
"submitter": "Hop gcn.circular",
"authors": "Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>",
"data": {
"date": "23/06/21 09:26:11 GMT",
"from": "Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>",
"title": "GCN CIRCULAR",
"number": "34047",
"subject": "ZTF23aaoohpy/AT2023lc: Mondy optical observations"
},
"message_text": "S. Belkin (IKI, HSE), E. Klunko (ISTP), A. Pozanenko (IKI), N. Pankov (HSE) report on behalf of GRB IKI FuN:\n\nWe observed the field of ATLAS23msn/ZTF23aaoohpy/AT2023lcr (Swain et al., GCN 34022) with AZT-33IK telescope of Mondy observatory in R-filter on 2023-06-20 starting (UT) 15:34:09 (mid exposure time is ~2.4 days after the ZTF discovery). We detect the optical counterpart (Gompertz et al., GCN34023; Kumar et al., GCN34025; Adami et al., GCN 34030; Perley et al, GCN 34031; Jiang et al., GCN 34040; Perley et al., GCN 34041; Fulton et al., 34042; Chen et al., GCN 34043). Preliminary photometry of a stacked image is following\n\nDate UT start MJD Exp. Filter OT Err. UL(3sigma)\n (mid exposure) (s)\n\n2023-06-20 15:34:09 60115.66607639 25*120 R 21.42 0.17 22.4\n\nThe photometry is based on nearby SDSS-DR12 stars.\nSDSS-DR12\nRA DEC R(Lupton transformations)\n16:31:20.4491016 +26:24:03.644928 18.124\n16:31:41.2384008 +26:20:23.267580 17.545\n16:31:32.6899656 +26:20:16.058832 18.238\n16:31:31.3849992 +26:19:27.712488 18.804\n\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg3MzM5NTc2LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.c5kPXzFYGfrZPbTZKU4p7DOJntPqd5tyxWZqzfwsqyA\n\n",
"published": "2023-06-21T09:26:21.567327Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-21T09:26:21.567358Z",
"modified": "2023-06-21T09:26:21.572949Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 467,
"topic": "igwn.gwalert",
"uuid": "4ff71653-ae7f-40b1-8603-f815215ae186",
"title": "S230621ap - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230621ap/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230621ap/view/"
},
"event": {
"far": 1.578272713231854e-05,
"time": "2023-06-21T09:41:24.922Z",
"group": "CBC",
"search": "AllSky",
"area_50": 1812.664450244818,
"area_90": 6110.057737137296,
"duration": null,
"pipeline": "spiir",
"properties": {
"HasNS": 1.0,
"HasMassGap": 0.0,
"HasRemnant": 1.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "574963b4a2c4d49d950efeac386d270b",
"classification": {
"BBH": 0.0,
"BNS": 0.10322026647653026,
"NSBH": 0.0,
"Terrestrial": 0.8967797335234697
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-06-21T09:41:48Z",
"superevent_id": "S230621ap",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-21T09:41:50.339940Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-21T09:41:50.339963Z",
"modified": "2023-06-21T09:41:50.344908Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 468,
"topic": "igwn.gwalert",
"uuid": "800590b2-7c43-4ab8-bfba-ed12fd91f78b",
"title": "S230621ap - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230621ap/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230621ap/view/"
},
"event": {
"far": 1.578272713231854e-05,
"time": "2023-06-21T09:41:24.922Z",
"group": "CBC",
"search": "AllSky",
"area_50": 1812.664450244818,
"area_90": 6110.057737137296,
"duration": null,
"pipeline": "spiir",
"properties": {
"HasNS": 1.0,
"HasMassGap": 0.0,
"HasRemnant": 1.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "574963b4a2c4d49d950efeac386d270b",
"classification": {
"BBH": 0.0,
"BNS": 0.10322026647653026,
"NSBH": 0.0,
"Terrestrial": 0.8967797335234697
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-06-21T09:46:22Z",
"superevent_id": "S230621ap",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-21T09:46:23.956032Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-21T09:46:23.956056Z",
"modified": "2023-06-21T09:46:23.960852Z",
"nonlocalizedevents": [],
"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",
"nonlocalizedevents": [
{
"event_id": "S230620a"
}
],
"targets": []
},
{
"id": 470,
"topic": "gcn.circular",
"uuid": "79f9013d-6aa6-4ae2-a4fc-dd5e0eac5343",
"title": "ZTF23aaoohpy (AT2023lcr/ATLAS23msn): Swift/UVOT detection",
"submitter": "Hop gcn.circular",
"authors": "Alice Breeveld at MSSL-UCL <a.breeveld@ucl.ac.uk>",
"data": {
"date": "23/06/21 11:43:05 GMT",
"from": "Alice Breeveld at MSSL-UCL <a.breeveld@ucl.ac.uk>",
"title": "GCN CIRCULAR",
"number": "34049",
"subject": "ZTF23aaoohpy (AT2023lcr/ATLAS23msn): Swift/UVOT detection"
},
"message_text": "A. A. Breeveld (UCL-MSSL) and S. R. Oates (U. Birmingham) report on behalf of the Swift/UVOT team:\n\nFollow-up observations of the optical fast transient ATLAS23msn/ZTF23aaoohpy/AT2023lcr (Swain et al., GCN 34022; Gompertz et al., GCN 34023; Kumar et al., GCN 34025; Adami et al., GCN 34030; Perley et al., GCN 34031; Jiang et al., GCN 34040; Perley et al., GCN 34041; Fulton et al., 34042; Chen et al., GCN 34043, Belkin et al., GCN 34047) were carried out with the Neil Gehrels Swift Observatory between 2023-06-20 12:57:02 UT and 2023-06-20 14:54:56 UT, in which a source was detected by the XRT (Adreoni, GCN 34044).\n\nA source was also detected in the Swift UVOT data in the UVM2 filter at the position given by Swain et al., (GCN 34022). Possible detections are also obtained in the U, UVW1 and UVW2 filters but at a significance below 3 sigma. Preliminary tentative detections and 3-sigma upper limits using the UVOT photometric system (Breeveld et al. 2011, AIP Conf. Proc. 1358, 373) for the summed exposures are:\n\nFILTER EXP(s) MAG Significance of Upper Limits (3o)\n Detection\nv 157 >19.6\nb 157 >20.6\nu 157 20.6 ± 0.5 2.1 sigma >20.1\nw1 315 20.4 ± 0.5 2.1 sigma >20.0\nm2 1489 20.8 ± 0.3 3.9 sigma\nw2 629 21.0 ± 0.4 2.5 sigma >20.7\n\nThe magnitudes in the table are not corrected for the Galactic extinction due to the reddening of E(B-V) = 0.05 in the direction of the burst (Schlegel et al. 1998)\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg3MzQ3NzkwLCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.NG59FbdWdxBkGGiuDgWmsPjChcUnX3C9ISCYYnZiCoY\n\n",
"published": "2023-06-21T11:43:16.592759Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-21T11:43:16.592778Z",
"modified": "2023-06-21T11:43:16.601695Z",
"nonlocalizedevents": [],
"targets": []
},
{
"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",
"nonlocalizedevents": [
{
"event_id": "S230620a"
}
],
"targets": []
},
{
"id": 472,
"topic": "gcn.circular",
"uuid": "29db3741-a4b3-4c88-9386-50e932963c0f",
"title": "ZTF23aaoohpy (AT2023lcr/ATLAS23msn): Upper limits from Konus-Wind observations",
"submitter": "Hop gcn.circular",
"authors": "Anna Ridnaia at Ioffe Institute <ridnaia@mail.ioffe.ru>",
"data": {
"date": "23/06/21 17:50:27 GMT",
"from": "Anna Ridnaia at Ioffe Institute <ridnaia@mail.ioffe.ru>",
"title": "GCN CIRCULAR",
"number": "34051",
"subject": "ZTF23aaoohpy (AT2023lcr/ATLAS23msn): 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 between the last\nGOTO non-detection (2023-06-17 23:50:30 UTC, hereafter T1;\nGompertz at al., GCN Circ. 34023) and the first GOTO detection\n(2023-06-18 01:27:41 UTC, hereafter T2; Gompertz at al., GCN Circ. 34023)\nof ZTF23aaoohpy/AT2023lcr/ATLAS23msn (Swain et al., GCN Circ. 34022;\nTonry et al. TNS Astronomical Transient Report No. 180429).\n\nNo triggered or waiting-mode KW GRBs were detected during the\ninterval from T1 to T2. The closest waiting-mode GRBs were observed\n~6.5 hours before T1 and ~2.3 hours after T2.\n\nFor the interval from T1 to T2, we estimate an upper limit (90% conf.)\non the 20 - 1500 keV fluence to 6.5x10^-7 erg/cm^2 for a burst lasting\nless than 2.944 s and having a typical KW short GRB spectrum\n(an exponentially cut off power law with alpha =-0.5 and EpP0 keV).\nFor a typical long GRB spectrum (the Band function with alpha=-1,\nbeta=-2.5, and Ep00 keV), the corresponding limiting peak flux\nis 1.8x10^-7 erg/cm^2/s (20 - 1500 keV, 2.944 s scale).\n\nAll the quoted values are preliminary.\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg3MzY5ODMzLCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.KBBTc8E61em0nkkR4KGWFOF-MtRNwCayYpSPteWgaBM\n\n",
"published": "2023-06-21T17:50:41.322167Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-21T17:50:41.322187Z",
"modified": "2023-06-21T17:50:41.330144Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 473,
"topic": "gcn.circular",
"uuid": "2f71e734-bb06-476d-a92d-4cee89232d39",
"title": "ZTF23aaoohpy/AT2023lcr: Montarrenti Observatory optical observations",
"submitter": "Hop gcn.circular",
"authors": "Simone Leonini at Montarrenti Observatory (Siena, Italy) <s.leonini@iol.it>",
"data": {
"date": "23/06/21 20:42:48 GMT",
"from": "Simone Leonini at Montarrenti Observatory (Siena, Italy) <s.leonini@iol.it>",
"title": "GCN CIRCULAR",
"number": "34052",
"subject": "ZTF23aaoohpy/AT2023lcr: Montarrenti Observatory optical observations"
},
"message_text": "S. Leonini, M. Conti, P. Rosi, L.M. Tinjaca Ramirez (Montarrenti Observatory, Siena, Italy), G. Bonnoli (INAF-OAB) report:\n\nWe observed the field of the fast red optical transient ZTF23aaoohpy/AT2023lcr (Swain et al., GCN 34022; Gompertz et al., GCN 34023; Kumar et al., GCN 34025; Adami et al., GCN 34030; Perley et al., GCN 34031; Jiang et al., GCN 34040; Perley et al., GCN 34041; Fulton et al., 34042; Chen et al., GCN 34043, Belkin et al., GCN 34047; A. A. Breeveld, GCN 34049) with the automatic 0.53m Ritchey-Chretien telescope + U47 detector at Montarrenti Observatory (Siena, Italy, IAU code C88).\n\nThe observations were started under mediocre weather conditions at 2023-06-19 21:54:09 UT (approximately 5 hours after notice) stacking a sets of R and I-band CCD images.\n\nThe OT was detected at the following position:\n\nRA (J2000.0) 16h 31m 37.42s +/-0.17 \nDecl. (J2000.0) +26° 21' 58.00\" +/-0.16\n\nPreliminary photometry is obtained using nearby PanSTARRS stars as follows: \n\nMJD Filter Mag. Err.\n60114.91576 R 20.53 +/-0.20\n60114.91631 I 20.02 +/-0.19\n\nMeasures are not corrected for galactic dust extinction.\n\nMontarrenti Observatory (IAU code C88) is a public observatory located close to the homonym medieval castle near Siena - Italy managed by the local amateur astronomer association (Unione Astrofili Senesi). The main instrument is an automated and remoted Ritchey-Chretien telescope D=0.53m - f/8.7 equipped with U47 back-illuminated camera. The observatory is devoted to supernovae search, GRB afterglow detection and photometric follow-up of blazars\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg3MzgwMTczLCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.Q458tgH68bDwMCVnJHWbFT7DqAFIHP-Cmra89g--YLA\n\n",
"published": "2023-06-21T20:42:58.839722Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-21T20:42:58.839743Z",
"modified": "2023-06-21T20:42:58.846929Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 474,
"topic": "gcn.circular",
"uuid": "413c0646-df36-41cd-8512-cf02f0ad9461",
"title": "AT2023lcr: VLA radio detection",
"submitter": "Hop gcn.circular",
"authors": "Daniel Perley at Liverpool JMU <d.a.perley@ljmu.ac.uk>",
"data": {
"date": "23/06/21 20:54:10 GMT",
"from": "Daniel Perley at Liverpool JMU <d.a.perley@ljmu.ac.uk>",
"title": "GCN CIRCULAR",
"number": "34053",
"subject": "AT2023lcr: VLA radio detection"
},
"message_text": "D. A. Perley (LJMU), A. Y. Q. Ho (Cornell), and R. A. Perley (NRAO) report on behalf of a larger collaboration:\n\nWe observed the location of the fast optical transient AT2023lcr, also known as ZTF23aaoohpy (Swain et al., GCN 34022) or ATLAS23msn (Fulton et al. Astronote #2023-179), using the Karl G. Jansky Very Large Array (VLA) on 2023 June 21. Observations were carried out using the X-band receivers (8-12 GHz) between 06:20 and 06:46 (UT), approximately 3.21 days after the earliest reported detection of the transient (Gompertz et al., GCN 34023).\n\nWe detect a strong radio source at a location of RA = 16:31:37.419, Dec=+26:21:58.286 (J2000; RMS statistical accuracy +/- 0.01\"), consistent with the optical position. The average flux density over the bandpass is 204 +/- 8 microJy.\n\nWe thank Heidi Medlin and the VLA staff for rapidly scheduling and executing these observations.\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg3MzgwODU1LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.gUcRFzWNq7x4atK94ZPamXY51vyOdKqLKxbY0Pe-F7c\n\n",
"published": "2023-06-21T20:54:21.190712Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-21T20:54:21.190786Z",
"modified": "2023-06-21T20:54:21.197853Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 475,
"topic": "igwn.gwalert",
"uuid": "b7f0fa87-ffb3-4ea3-af43-c9fe2c94f19d",
"title": "S230621bn - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
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"gracedb": "https://gracedb.ligo.org/superevents/S230621bn/view/"
},
"event": {
"far": 1.376095e-05,
"time": "2023-06-21T23:35:08.293Z",
"group": "CBC",
"search": "AllSky",
"area_50": 358.4832982108197,
"area_90": 1890.9285826607593,
"duration": null,
"pipeline": "MBTA",
"properties": {
"HasNS": 1.0,
"HasMassGap": 0.45994227994228,
"HasRemnant": 1.0
},
"instruments": [
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"significant": false,
"skymap_hash": "7ec4295df5da5159d8e987a4033bfec5",
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"BNS": 0.000913633,
"NSBH": 0.0,
"Terrestrial": 0.999086367
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-06-21T23:35:38Z",
"superevent_id": "S230621bn",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-21T23:35:39.997219Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-21T23:35:39.997245Z",
"modified": "2023-06-21T23:35:40.011314Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 476,
"topic": "igwn.gwalert",
"uuid": "bfddfb2a-c9c8-4e03-bf93-a9a82d66ae58",
"title": "S230621bn - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230621bn/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230621bn/view/"
},
"event": {
"far": 1.376095e-05,
"time": "2023-06-21T23:35:08.293Z",
"group": "CBC",
"search": "AllSky",
"area_50": 358.4832982108197,
"area_90": 1890.9285826607593,
"duration": null,
"pipeline": "MBTA",
"properties": {
"HasNS": 1.0,
"HasMassGap": 0.45994227994228,
"HasRemnant": 1.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "7ec4295df5da5159d8e987a4033bfec5",
"classification": {
"BBH": 0.0,
"BNS": 0.000913633,
"NSBH": 0.0,
"Terrestrial": 0.999086367
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-06-21T23:40:12Z",
"superevent_id": "S230621bn",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-21T23:40:13.744588Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-21T23:40:13.744613Z",
"modified": "2023-06-21T23:40:13.749776Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 477,
"topic": "igwn.gwalert",
"uuid": "ab69f7c6-3ee0-498b-ab45-2a3e454be9a0",
"title": "S230621bq - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230621bq/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230621bq/view/"
},
"event": {
"far": 9.284161899922555e-07,
"time": "2023-06-21T23:47:43.382Z",
"group": "Burst",
"search": "AllSky",
"area_50": 239.40851229648533,
"area_90": 789.7753201437081,
"duration": 0.0018262784080530887,
"pipeline": "oLIB",
"properties": {},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "38498f82d9e243ce0d97cff85229cda2",
"classification": {},
"skymap_version": 0,
"central_frequency": 373.88393899939706
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-06-21T23:59:28Z",
"superevent_id": "S230621bq",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-21T23:59:28.683298Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-21T23:59:28.683320Z",
"modified": "2023-06-21T23:59:28.688289Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 478,
"topic": "igwn.gwalert",
"uuid": "7e4cd01a-f862-48f4-b859-68cbf719d97b",
"title": "S230622e - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230622e/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230622e/view/"
},
"event": {
"far": 1.2171614869567445e-06,
"time": "2023-06-22T00:19:02.230Z",
"group": "Burst",
"search": "AllSky",
"area_50": 226.7666517654922,
"area_90": 2852.7591000727566,
"duration": 0.00278308287402008,
"pipeline": "oLIB",
"properties": {},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "43a847ee2d80d9551be2ff032c28d554",
"classification": {},
"skymap_version": 0,
"central_frequency": 528.2093538203212
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-06-22T00:34:10Z",
"superevent_id": "S230622e",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-22T00:34:11.438199Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-22T00:34:11.438224Z",
"modified": "2023-06-22T00:34:11.446127Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 479,
"topic": "igwn.gwalert",
"uuid": "1e3b87d1-200c-4633-80ea-4bd084c7c994",
"title": "S230622e - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230622e/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230622e/view/"
},
"event": {
"far": 1.2171614869567445e-06,
"time": "2023-06-22T00:19:02.230Z",
"group": "Burst",
"search": "AllSky",
"area_50": 226.7666517654922,
"area_90": 2852.7591000727566,
"duration": 0.00278308287402008,
"pipeline": "oLIB",
"properties": {},
"instruments": [
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"L1"
],
"significant": false,
"skymap_hash": "43a847ee2d80d9551be2ff032c28d554",
"classification": {},
"skymap_version": 0,
"central_frequency": 528.2093538203212
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-06-22T00:38:44Z",
"superevent_id": "S230622e",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-22T00:38:45.018544Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-22T00:38:45.018567Z",
"modified": "2023-06-22T00:38:45.039273Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 480,
"topic": "igwn.gwalert",
"uuid": "05b5bccf-f450-46d5-ab72-bd2cce0c11a6",
"title": "S230621bq - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230621bq/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230621bq/view/"
},
"event": {
"far": 9.284161899922555e-07,
"time": "2023-06-21T23:47:43.382Z",
"group": "Burst",
"search": "AllSky",
"area_50": 239.40851229648533,
"area_90": 789.7753201437081,
"duration": 0.0018262784080530887,
"pipeline": "oLIB",
"properties": {},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "38498f82d9e243ce0d97cff85229cda2",
"classification": {},
"skymap_version": 0,
"central_frequency": 373.88393899939706
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-06-22T00:59:56Z",
"superevent_id": "S230621bq",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-22T00:59:56.905146Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-22T00:59:56.905169Z",
"modified": "2023-06-22T00:59:56.911993Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 481,
"topic": "gcn.circular",
"uuid": "3d83cfb7-3dfc-4f83-9474-e2fae287907d",
"title": "Fermi GBM-230619: A soft subthreshold candidate potentially associated with a subthreshold LIGO/Virgo compact binary merger candidate",
"submitter": "Hop gcn.circular",
"authors": "Joshua Wood at NASA/MSFC <joshua.r.wood@nasa.gov>",
"data": {
"date": "23/06/22 01:03:24 GMT",
"from": "Joshua Wood at NASA/MSFC <joshua.r.wood@nasa.gov>",
"title": "GCN CIRCULAR",
"number": "34054",
"subject": "Fermi GBM-230619: A soft subthreshold candidate potentially associated with a subthreshold LIGO/Virgo compact binary merger candidate"
},
"message_text": "J. Wood (NASA), O.J. Roberts (USRA), E. Burns (LSU), P. Veres (UAH), A. Tohuvavohu (U Toronto) et al. report on behalf of the Fermi-GBM Team:\n\nIn routine Fermi GBM follow-up analysis of subthreshold GW triggers from\nLIGO/Virgo, a potential soft gamma-ray transient GBM-230619 was identified\nclose in time to S230619bd.\n\nOnline analysis of data from LIGO Livingston (L1) and Hanford (H1) Observatories\nidentified a possible subthreshold compact binary merger candidate S230619bd at\n2023-06-19 19:25:06.4 UTC (GPS time: 1371237924.4). The candidate\nwas found by the SPIIR [1] [2] analysis pipeline with classification probabilities\nof 81% terrestrial origin, 18% BNS, and <1% NSBH.\n\nThe GBM Targeted Search [3,4,5], a sensitive and coherent search for\nsubthreshold GRB-like signals, was run from +/-30 s around the GW candidate\nand identified a candidate gamma-ray signal starting at 19:25:22.3 UTC,\n15.9 s after the GW trigger time. GBM-230619 is approximately 4.1 s in\nduration and was identified with the soft spectral template [5]. Its localization\nis consistent with the GW localization, corresponding to an 89% chance of\ncoming from the same source. The offset, duration, location and spectral properties are\nsuggestive of a galactic source class and are inconsistent with expectations\nfrom a short GRB with an on-axis jet. However, we cannot rule out off-axis GRB\nemission although we acknowledge it should be challenging to detect it at the purported\nGW distance of 526+/-142 Mpc. The False Alarm Rate (FAR) for the\nGBM Targeted Search detection statistic is 3.2e-5 Hz.\n\nNeither the GW candidate nor the potential gamma-ray transient are significant enough\nto report on their own merit. However, these events are of interest because\nof their potential association. Follow-up is encouraged to determine the nature of the\ngamma-ray transient. Investigation on the data quality of the\ngravitational-wave event is ongoing.\n\nThe joint skymap available at this moment is obtained by combining the\nlocalization from L1-H1 using BAYESTAR [6] with the Fermi-GBM localization;\nthe 90% error area corresponds to 587 sq. deg. while the 50% error area is\n145 sq. deg. This skymap is available via Zenodo: https://gcc02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fzenodo.org%2Frecord%2F8067512&data\u0005%7C01%7Ccirculars%40gcn.nasa.gov%7C9b379d6300f14f9a7dbe08db72bc68de%7C7005d45845be48ae8140d43da96dd17b%7C0%7C0%7C638229925920569415%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=8%2F3wCrwzbZyrwhT9LlIcKU2pNLElP5AGUQT%2Fnn6et0c%3D&reserved=0\n\nSwift was passing through the South Atlantic Anomaly, with detectors disabled, at the time of this trigger.\n\nFermi and Swift expect to automatically disseminate joint alerts that meet the IGWN significance threshold, through GCN Kafka, within the next few weeks.\n\n [1] Hooper et al. 2012, Phys. Rev. D, 86, 024012.\n [2] Chu, Q. 2017, Ph.D. Thesis, The University of Western Australia.\n [3] Blackburn et al. 2015, ApJS 217, 8\n [4] Goldstein et al. arXiv:1612.02395\n [5] Goldstein et al. arXiv:1903.12597\n [6] Singer & Price PRD 93, 024013 (2016)\n\n\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg3Mzk1ODA5LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.t4cEZ0jTdMckdVi4a4PFnMP_moqTX5ohrNzrfzWUZKg\n\n",
"published": "2023-06-22T01:03:35.418546Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-22T01:03:35.418565Z",
"modified": "2023-06-22T01:03:35.424859Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 482,
"topic": "gcn.circular",
"uuid": "37e42853-70b9-42b1-a990-0225dac430c1",
"title": "Fermi trigger No 709083929: 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": "23/06/22 01:30:37 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "34055",
"subject": "Fermi trigger No 709083929: 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 Fermi GRB230621.99 (trigger No 709083929,22h 44m 28.08s , +46d 55m 01.2s, R=5.73) errorbox 31 sec after notice time and 67 sec after trigger time at 2023-06-21 23:46:32 UT, with upper limit up to 18.1 mag. Observations started at twilight. The observations began at zenith distance = 24 deg. The sun altitude is -14.7 deg.\n\nThe galactic latitude b = -11 deg., longitude l = 102 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/observ.php?id\"25883\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 72 | 2023-06-21 23:46:32 | MASTER-Kislovodsk | (22h 49m 56.38s , +46d 43m 03.2s) | C | 10 | 17.2 |\n 92 | 2023-06-21 23:46:32 | MASTER-Kislovodsk | (22h 49m 56.38s , +46d 43m 03.3s) | C | 50 | 18.1 | Coadd\n 108 | 2023-06-21 23:47:02 | MASTER-Kislovodsk | (22h 50m 03.22s , +46d 43m 16.6s) | C | 20 | 17.7 |\n 147 | 2023-06-21 23:47:42 | MASTER-Kislovodsk | (22h 50m 00.46s , +46d 44m 37.7s) | C | 20 | 17.7 |\n 193 | 2023-06-21 23:48:22 | MASTER-Kislovodsk | (22h 50m 00.25s , +46d 43m 07.9s) | C | 30 | 18.0 |\n 248 | 2023-06-21 23:49:12 | MASTER-Kislovodsk | (22h 50m 03.26s , +46d 44m 41.4s) | C | 40 | 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.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg3Mzk3NDQzLCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.2g2JHf5RiJe57YHveH87PF9UEWUxGT_mSwM47u5M8fk\n\n",
"published": "2023-06-22T01:30:48.656611Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-22T01:30:48.656631Z",
"modified": "2023-06-22T01:30:48.664931Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 483,
"topic": "gcn.circular",
"uuid": "b92a8436-900f-47a7-b07d-98d5e67cc293",
"title": "GRB 230621A: Fermi GBM Final Localization Correction",
"submitter": "Hop gcn.circular",
"authors": "Joshua Wood at NASA/MSFC <joshua.r.wood@nasa.gov>",
"data": {
"date": "23/06/22 02:13:52 GMT",
"from": "Joshua Wood at NASA/MSFC <joshua.r.wood@nasa.gov>",
"title": "GCN CIRCULAR",
"number": "34056",
"subject": "GRB 230621A: Fermi GBM Final Localization Correction"
},
"message_text": "The Fermi GBM team reports the detection of a likely LONG GRB\n\n\"At 23:45:24.83 UT on 21 June 2023, the Fermi Gamma-ray Burst Monitor (GBM)\ntriggered and located GRB 230621A (trigger 709083929/230621990).\nThis trigger was initially classified as Distant Particles by the flight software,\nbut is in fact a GRB.\n\nThe on-ground calculated location, using the Fermi GBM trigger data,\nis RA = 337.40, Dec = 41.22 (J2000 degrees, equivalent to J2000 22h 29m, +41d 13'),\nwith a statistical uncertainty of 4.54 degrees.\n\nThe angle from the Fermi LAT boresight is 70 degrees.\n\nThe skymap can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn230621990/quicklook/glg_skymap_all_bn230621990.png\n\nThe HEALPix FITS file, including the estimated localization systematic, can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn230621990/quicklook/glg_healpix_all_bn230621990.fit\n\nThe GBM light curve can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn230621990/quicklook/glg_lc_medres34_bn230621990.gif\"\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg3NDAwMDM3LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.WEHloTaWma6Zm6iyIL1fXdWODH5mWUAxy761Hrua1wQ\n\n",
"published": "2023-06-22T02:14:03.361136Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-22T02:14:03.361176Z",
"modified": "2023-06-22T02:14:03.367917Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 484,
"topic": "igwn.gwalert",
"uuid": "9869b291-0d94-4286-8c79-aee021aa09c8",
"title": "S230622i - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230622i/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230622i/view/"
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"event": {
"far": 1.419649925082922e-05,
"time": "2023-06-22T02:45:39.962Z",
"group": "CBC",
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"area_50": 1649.4218362512458,
"area_90": 9769.378030257983,
"duration": null,
"pipeline": "spiir",
"properties": {
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"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-06-22T02:46:02Z",
"superevent_id": "S230622i",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-22T02:46:03.646661Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-22T02:46:03.646687Z",
"modified": "2023-06-22T02:46:03.653901Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 485,
"topic": "igwn.gwalert",
"uuid": "f7fffec6-aa8e-4e00-a560-820367fb2618",
"title": "S230622i - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230622i/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230622i/view/"
},
"event": {
"far": 1.419649925082922e-05,
"time": "2023-06-22T02:45:39.962Z",
"group": "CBC",
"search": "AllSky",
"area_50": 1649.4218362512458,
"area_90": 9769.378030257983,
"duration": null,
"pipeline": "spiir",
"properties": {
"HasNS": 0.7804423748081232,
"HasMassGap": 0.05991435035552683,
"HasRemnant": 0.11120960933354189
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"L1"
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"significant": false,
"skymap_hash": "2b8fd248c9e85294128f5ae962aa1477",
"classification": {
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"BNS": 0.0,
"NSBH": 0.0892964441025615,
"Terrestrial": 0.8894797595034142
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-06-22T02:50:36Z",
"superevent_id": "S230622i",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-22T02:50:38.569091Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-22T02:50:38.569123Z",
"modified": "2023-06-22T02:50:38.574451Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 486,
"topic": "gcn.circular",
"uuid": "cc63f7d8-6c83-4a9b-833a-7129266f6556",
"title": "IceCube-Cascade 230621A: Upper limits from a search for additional neutrino events in IceCube",
"submitter": "Hop gcn.circular",
"authors": "Jessie Thwaites at IceCube/U Wisc-Madison <thwaites@wisc.edu>",
"data": {
"date": "23/06/22 03:29:11 GMT",
"from": "Jessie Thwaites at IceCube/U Wisc-Madison <thwaites@wisc.edu>",
"title": "GCN CIRCULAR",
"number": "34057",
"subject": "IceCube-Cascade 230621A: Upper limits from a search for additional neutrino events in IceCube"
},
"message_text": "The IceCube Collaboration (http://icecube.wisc.edu/) reports:\n\nIceCube has performed a search [1] for additional track-like muon neutrino events arriving from the direction of IceCube-Cascade 230621A (https://gcn.gsfc.nasa.gov/notices_amon_icecube_cascade/138065_72143074.amon) in a time range of 1000 seconds centered on the alert event time (2023-06-21 01:47:30.360 UTC to 2023-06-21 02:04:10.360 UTC) during which IceCube was collecting good quality data. Excluding the event that prompted the alert, zero track-like events are found within the 90% containment region of IceCube-Cascade 230621A. The IceCube sensitivity to neutrino point sources with an E^-2.5 spectrum (E^2 dN/dE at 1 TeV) within the locations spanned by the 90% spatial containment region of IceCube-Cascade 230621A ranges from 8.1e+00 to 1.4e+01 GeV cm^-2 in a 1000 second time window. 90% of events IceCube would detect from a source at this declination with an E^-2.5 spectrum have energies in the approximate energy range between 3e+04 GeV and 4e+06 GeV.\n\nA subsequent search was performed including 2 days of data centered on the alert event time (2023-06-20 01:55:50.360 UTC to 2023-06-22 01:55:50.360 UTC). In this case, we report a p-value of 0.80, consistent with no significant excess of track events. The IceCube sensitivity to neutrino point sources with an E^-2.5 spectrum (E^2 dN/dE at 1 TeV) within the locations spanned by the 90% spatial containment region of IceCube-Cascade 230621A ranges from 8.2e+00 to 1.4e+01 GeV cm^-2 in a 2 day 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] IceCube Collaboration, R. Abbasi et al., ApJ 910 4 (2021)\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg3NDA0NTU2LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.kC2sBaGDdPuAxp81X-XdpmR0Blvlsv4cZC_egZy-lOU\n\n",
"published": "2023-06-22T03:29:22.021939Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-22T03:29:22.022003Z",
"modified": "2023-06-22T03:29:22.030104Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 487,
"topic": "igwn.gwalert",
"uuid": "0da4af58-236a-4e27-aa20-e025c1bc643b",
"title": "S230622u - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230622u/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230622u/view/"
},
"event": {
"far": 1.465148329329893e-05,
"time": "2023-06-22T06:14:23.836Z",
"group": "CBC",
"search": "AllSky",
"area_50": 557.7106272428206,
"area_90": 2057.10872441257,
"duration": null,
"pipeline": "pycbc",
"properties": {
"HasNS": 1.0,
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},
"instruments": [
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"significant": false,
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"Terrestrial": 0.9973859545236213
},
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},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-06-22T06:14:54Z",
"superevent_id": "S230622u",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-22T06:14:56.011943Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-22T06:14:56.011970Z",
"modified": "2023-06-22T06:14:56.020992Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 488,
"topic": "igwn.gwalert",
"uuid": "e3da7056-9239-4568-bc5c-3c63354bba1b",
"title": "S230622u - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230622u/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230622u/view/"
},
"event": {
"far": 1.465148329329893e-05,
"time": "2023-06-22T06:14:23.836Z",
"group": "CBC",
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"area_50": 557.7106272428206,
"area_90": 2057.10872441257,
"duration": null,
"pipeline": "pycbc",
"properties": {
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},
"instruments": [
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"significant": false,
"skymap_hash": "8aac3870daf8d630df193e5daf6616b9",
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},
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},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-06-22T06:19:28Z",
"superevent_id": "S230622u",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-22T06:19:30.622010Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-22T06:19:30.622034Z",
"modified": "2023-06-22T06:19:30.626911Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 489,
"topic": "igwn.gwalert",
"uuid": "e329748d-1eb6-43f7-9f00-428ded079d4e",
"title": "S230622ah - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230622ah/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230622ah/view/"
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"event": {
"far": 3.318004269750433e-06,
"time": "2023-06-22T08:58:25.237Z",
"group": "CBC",
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"area_50": 372.59392262093246,
"area_90": 1265.6548169784396,
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},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-06-22T08:58:57Z",
"superevent_id": "S230622ah",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-22T08:58:58.669471Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-22T08:58:58.669512Z",
"modified": "2023-06-22T08:58:58.676586Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 490,
"topic": "igwn.gwalert",
"uuid": "914a3559-e94a-41d7-8aa2-ac54cf1071e4",
"title": "S230622ah - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230622ah/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230622ah/view/"
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"event": {
"far": 3.318004269750433e-06,
"time": "2023-06-22T08:58:25.237Z",
"group": "CBC",
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"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-06-22T09:03:31Z",
"superevent_id": "S230622ah",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-22T09:03:32.917890Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-22T09:03:32.917913Z",
"modified": "2023-06-22T09:03:32.922837Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 491,
"topic": "gcn.circular",
"uuid": "2a0a2023-6a67-4d8e-873d-164fb228ea4b",
"title": "GRB 230622A: Swift detection of a burst",
"submitter": "Hop gcn.circular",
"authors": "K.L. Page at U Leicester <klp5@leicester.ac.uk>",
"data": {
"date": "23/06/22 10:25:32 GMT",
"from": "K.L. Page at U Leicester <klp5@leicester.ac.uk>",
"title": "GCN CIRCULAR",
"number": "34058",
"subject": "GRB 230622A: Swift detection of a burst"
},
"message_text": "\nA. Melandri (INAF-OAR), A. D'Ai (INAF-IASFPA), J. A. Kennea (PSU),\nK. L. Page (U Leicester) and M. H. Siegel (PSU) report on behalf of\nthe Neil Gehrels Swift Observatory Team:\n\nAt 10:04:21 UT, the Swift Burst Alert Telescope (BAT) triggered and\nlocated GRB 230622A (trigger\u001176135). Swift slewed immediately to the burst.\nThe BAT on-board calculated location is\nRA, Dec 292.532, -32.922 which is\n RA(J2000) = 19h 30m 08s\n Dec(J2000) = -32d 55' 16\"\nwith an uncertainty of 3 arcmin (radius, 90% containment, including\nsystematic uncertainty). The BAT light curve showed a single-peaked\nstructure with a duration of about 5 sec. The peak count rate\nwas ~2020 counts/sec (15-350 keV), at ~0 sec after the trigger.\n\nThe XRT began observing the field at 10:10:36.3 UT, 375.1 seconds after\nthe BAT trigger. No source was detected in the 2.5-s promptly available\nimage. We are waiting for the full dataset to detect and localise the\nXRT counterpart.\n\nUVOT took a finding chart exposure of 114 seconds with the White filter\nstarting 378 seconds after the BAT trigger. No credible afterglow candidate has\nbeen found in the initial data products. The 2.7'x2.7' sub-image covers 25% of\nthe BAT error circle. The typical 3-sigma upper limit has been about 19.6 mag.\nThe 8'x8' region for the list of sources generated on-board covers 100% of the\nBAT error circle. The list of sources is typically complete to about 18 mag. No\ncorrection has been made for the expected extinction corresponding to E(B-V) of\n0.101.\n\nBurst Advocate for this burst is A. Melandri (andrea.melandri AT inaf.it).\nPlease contact the BA by email if you require additional information\nregarding Swift followup of this burst. In extremely urgent cases, after\ntrying the Burst Advocate, you can contact the Swift PI by phone (see\nSwift TOO web site for information: http://www.swift.psu.edu/)\n\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg3NDI5NTM3LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.yItW4RoazKZFvhOD9iBxPMBjsvF8ttQp2JXlG5ED0WE\n\n",
"published": "2023-06-22T10:25:42.472382Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-22T10:25:42.472402Z",
"modified": "2023-06-22T10:25:42.478481Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 492,
"topic": "gcn.circular",
"uuid": "0e5f4d56-bcf0-438d-9d45-bff7448fe518",
"title": "Fermi GBM-230619: AstroSat CZTI non-detection and upper limits for the sub-threshold candidate",
"submitter": "Hop gcn.circular",
"authors": "Gaurav Waratkar at IIT Bombay <gauravwaratkar@iitb.ac.in>",
"data": {
"date": "23/06/22 10:46:07 GMT",
"from": "Gaurav Waratkar at IIT Bombay <gauravwaratkar@iitb.ac.in>",
"title": "GCN CIRCULAR",
"number": "34059",
"subject": "Fermi GBM-230619: AstroSat CZTI non-detection and upper limits for the sub-threshold candidate"
},
"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 Fermi GBM-230619 (UTC 2023-06-19 19:25:22.3; Wood et al., GCN Circ. 34054). We use the Event1_healpix_combined.fit map (https://zenodo.org/record/8067512) 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 event, Astrosat's nominal pointing is RA, DEC = 10:38:32.1, -10:07:25.1 (159.6337,-10.1236), which is ~72 deg away from the maximum probability location, which severely reduces the effective area of CZTI. At the time of the event, the Earth-satellite-transient angle corresponding to the maximum probability location is ~151 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 joint Fermi-LVK localisation map not occulted by Earth in the satellite's frame has a total probability of 1.0 (100%).\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 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= 2.20e-05 ergs/cm^2/s; fluence limit = 2.20e-06 ergs/cm^2\n1.0 s: flux limit= 4.13e-06 ergs/cm^2/s; fluence limit = 4.13e-06 ergs/cm^2\n10.0 s: flux limit= 6.35e-07 ergs/cm^2/s; fluence limit = 6.35e-06 ergs/cm^2\n\nWe also carried out a similar search for X-ray candidates in a 100-sec window around the trigger time of the event S230619bd (UTC 2023-06-19 19:25:06.4). We report that the region of localisation map bayestar.multiorder.fits,1 map (https://gracedb.ligo.org/api/superevents/S230619bd/files/S230619bd_bayestar.multiorder.fits,1) which is not occulted by Earth in the satellite's frame has a total probability of 0.62 (62%). At the time of the event, the Earth-satellite-transient angle corresponding to the maximum probability location is ~147 deg and hence is not occulted by Earth in the satellite's frame. 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 for this skymap:\n\n0.1 s: flux limit= 2.12e-05 ergs/cm^2/s; fluence limit = 2.12e-06 ergs/cm^2\n1.0 s: flux limit= 4.00e-06 ergs/cm^2/s; fluence limit = 4.00e-06 ergs/cm^2\n10.0 s: flux limit= 6.14e-07 ergs/cm^2/s; fluence limit = 6.14e-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 GRB detections are reported regularly on the payload site at:\nhttp://astrosat.iucaa.in/czti/?q=emgw\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg3NDMwNzcyLCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.0vCnYLn2nAJ_KV_8uLuma8PB5f5z6ZzO5K8MoLWUPWE\n\n",
"published": "2023-06-22T10:46:18.299180Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-22T10:46:18.299199Z",
"modified": "2023-06-22T10:46:18.306321Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 493,
"topic": "gcn.circular",
"uuid": "a71b2b48-b689-46ce-abe3-c4c52bb5ea86",
"title": "ZTF23aaoohpy/AT2023lcr: SAO RAS observations",
"submitter": "Hop gcn.circular",
"authors": "Moskvitin Alexander at SAO RAS <mosk@sao.ru>",
"data": {
"date": "23/06/22 13:17:37 GMT",
"from": "Moskvitin Alexander at SAO RAS <mosk@sao.ru>",
"title": "GCN CIRCULAR",
"number": "34060",
"subject": "ZTF23aaoohpy/AT2023lcr: SAO RAS observations"
},
"message_text": "A. Moskvitin (SAO RAS), O. Spiridonova (SAO RAS), S. Belkin (IKI RAS,\nHSE), A. Pozanenko (IKI RAS), report on behalf of a larger\ncollaboration.\n\nWe observed the field of the fast red optical transient\nZTF23aaoohpy/AT2023lcr (Swain et al., GCN 34022) with the 1-m\ntelescope of SAO RAS Zeiss-1000/CCD-photometer. We obtained 8 x 300\nsec images in Rc band on 2023.06.21, 21:06:39--21:52:39 UT, 3.8347\ndays after GOTO detection (Gompertz et al., GCN 34023) or 3.7432 days\nafter ZTF detection (Swain et al., GCN 34022).\n\nThe OT (Swain et al., GCN 34022; Gompertz et al., GCN 34023; Kumar et\nal., GCN 34025; Adami et al., GCN 34030; Perley et al., GCN 34031;\nJiang et al., GCN 34040; Perley et al., GCN 34041; Fulton et al., GCN\n34042; Chen et al., GCN 34043, Belkin et al., GCN 34047; Breeveld, GCN\n34049; Leonini et al., GCN 34052) is clearly detected in the stacked\nframe with the brightness of R = 21.51 +/- 0.09 (based on stars\nmentioned in Belkin et al., GCN 34047).\n\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg3NDM5ODYzLCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.g8wn0EHv5E6Nyl6YwP7xCBGCv9JQ7Zz81_ulBoqRCDs\n\n",
"published": "2023-06-22T13:17:48.193977Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-22T13:17:48.193998Z",
"modified": "2023-06-22T13:17:48.200972Z",
"nonlocalizedevents": [],
"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",
"nonlocalizedevents": [
{
"event_id": "S230615a"
}
],
"targets": []
},
{
"id": 495,
"topic": "gcn.circular",
"uuid": "ccb9b37d-c12e-44be-885c-aed30a5178ec",
"title": "LIGO/Virgo S230621ad: 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": "23/06/22 14:30:10 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "34062",
"subject": "LIGO/Virgo S230621ad: 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 S230621ad errorbox 37288 sec after notice time and 37379 sec after trigger time at 2023-06-21 16:45:21 UT, with upper limit up to 18.9 mag. Observations started at twilight. The observations began at zenith distance = 57 deg. The sun altitude is -13.2 deg.\n\nMASTER-Kislovodsk robotic telescope located in Russia (Lomonosov MSU, Kislovodsk Solar Station of Pulkovo observatory) started inspect of the LIGO/Virgo S230621ad errorbox 63414 sec after notice time and 63506 sec after trigger time at 2023-06-22 00:00:48 UT, with upper limit up to 17.4 mag. Observations started at twilight. The observations began at zenith distance = 62 deg. The sun altitude is -13.1 deg.\n\nThe galactic latitude b = 56 deg., longitude l = 251 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/ligo_1.php?id\u0012206\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 37470 | 2023-06-21 16:45:21 | MASTER-SAAO | (07h 48m 40.71s , -21d 29m 01.2s) | C | 180 | 18.1 |\n 37470 | 2023-06-21 16:45:21 | MASTER-SAAO | (07h 49m 28.38s , -21d 29m 16.1s) | C | 180 | 18.1 |\n 38312 | 2023-06-21 16:59:24 | MASTER-SAAO | (07h 48m 34.31s , -21d 27m 00.7s) | C | 180 | 18.5 |\n 38312 | 2023-06-21 16:59:24 | MASTER-SAAO | (07h 49m 21.60s , -21d 27m 18.9s) | C | 180 | 18.6 |\n 40475 | 2023-06-21 17:35:26 | MASTER-SAAO | (10h 09m 35.73s , -51d 51m 41.6s) | C | 180 | 18.4 |\n 40475 | 2023-06-21 17:35:26 | MASTER-SAAO | (10h 10m 49.05s , -51d 51m 28.7s) | C | 180 | 18.2 |\n 40686 | 2023-06-21 17:38:57 | MASTER-SAAO | (10h 22m 31.22s , -51d 53m 37.7s) | C | 180 | 18.4 |\n 40686 | 2023-06-21 17:38:57 | MASTER-SAAO | (10h 23m 44.70s , -51d 53m 21.8s) | C | 180 | 18.3 |\n 40898 | 2023-06-21 17:42:29 | MASTER-SAAO | (08h 39m 39.51s , -38d 33m 01.8s) | C | 180 | 18.8 |\n 40898 | 2023-06-21 17:42:29 | MASTER-SAAO | (08h 40m 36.56s , -38d 33m 43.0s) | C | 180 | 18.8 |\n 41109 | 2023-06-21 17:46:00 | MASTER-SAAO | (08h 49m 53.97s , -38d 31m 56.2s) | C | 180 | 18.9 |\n 41109 | 2023-06-21 17:46:00 | MASTER-SAAO | (08h 50m 51.17s , -38d 32m 37.7s) | C | 180 | 18.8 |\n 41320 | 2023-06-21 17:49:31 | MASTER-SAAO | (10h 09m 41.45s , -51d 51m 59.9s) | C | 180 | 18.5 |\n 41320 | 2023-06-21 17:49:31 | MASTER-SAAO | (10h 10m 54.91s , -51d 51m 57.2s) | C | 180 | 18.3 |\n 41531 | 2023-06-21 17:53:03 | MASTER-SAAO | (10h 22m 31.57s , -51d 53m 09.9s) | C | 180 | 18.5 |\n 41531 | 2023-06-21 17:53:03 | MASTER-SAAO | (10h 23m 45.10s , -51d 53m 02.7s) | C | 180 | 18.4 |\n 63586 | 2023-06-22 00:00:48 | MASTER-Kislovodsk | (02h 45m 42.84s , +41d 55m 00.9s) | C | 160 | 17.0 |\n 63777 | 2023-06-22 00:03:48 | MASTER-Kislovodsk | (02h 45m 43.00s , +41d 53m 31.6s) | C | 180 | 17.4 |\n 63977 | 2023-06-22 00:07:09 | MASTER-Kislovodsk | (02h 45m 45.48s , +41d 55m 03.9s) | C | 180 | 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.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg3NDQ0MjEzLCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9._fK43p8I8_jvHPBgCCn_lTG9I8khCp-CrHnRYzSRcks\n\n",
"published": "2023-06-22T14:30:17.995241Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-22T14:30:17.995260Z",
"modified": "2023-06-22T14:30:18.000205Z",
"nonlocalizedevents": [
{
"event_id": "S230621a"
}
],
"targets": []
},
{
"id": 496,
"topic": "gcn.circular",
"uuid": "ca821be3-c06c-490a-a5ce-31c6b8ea81b8",
"title": "LIGO/Virgo S230621bq: 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": "23/06/22 14:30:16 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "34063",
"subject": "LIGO/Virgo S230621bq: 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 S230621bq errorbox 15 sec after notice time and 785 sec after trigger time at 2023-06-22 00:00:48 UT, with upper limit up to 17.4 mag. Observations started at twilight. The observations began at zenith distance = 62 deg. The sun altitude is -13.1 deg.\n\nThe galactic latitude b = -16 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\u0012218\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 865 | 2023-06-22 00:00:48 | MASTER-Kislovodsk | (02h 45m 42.84s , +41d 55m 00.9s) | C | 160 | 17.0 |\n 1056 | 2023-06-22 00:03:48 | MASTER-Kislovodsk | (02h 45m 43.00s , +41d 53m 31.6s) | C | 180 | 17.4 |\n 1256 | 2023-06-22 00:07:09 | MASTER-Kislovodsk | (02h 45m 45.48s , +41d 55m 03.9s) | C | 180 | 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.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg3NDQ0MjIyLCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.6e9LuQQTfrr-dFzjGQAYGnGoW0ulG_X8cGkZtSuEUlQ\n\n",
"published": "2023-06-22T14:30:27.038054Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-22T14:30:27.038074Z",
"modified": "2023-06-22T14:30:27.042956Z",
"nonlocalizedevents": [
{
"event_id": "S230621b"
}
],
"targets": []
},
{
"id": 497,
"topic": "gcn.circular",
"uuid": "a9dbb5cb-470a-487d-9115-ccd0691cc9b1",
"title": "LIGO/Virgo S230622e: 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": "23/06/22 14:30:26 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "34064",
"subject": "LIGO/Virgo S230622e: 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 S230622e errorbox 289 sec after trigger time at 2023-06-22 00:23:51 UT, with upper limit up to 17.0 mag. Observations started at twilight. The observations began at zenith distance = 60 deg. The sun altitude is -10.3 deg.\n\nMASTER-SAAO robotic telescope located in South Africa (South African Astronomical Observatory) started inspect of the LIGO/Virgo S230622e errorbox 979 sec after trigger time at 2023-06-22 00:35:21 UT, with upper limit up to 20.1 mag. The observations began at zenith distance = 61 deg. The sun altitude is -63.3 deg.\n\nThe galactic latitude b = -76 deg., longitude l = 92 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/ligo_1.php?id\u0012220\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 380 | 2023-06-22 00:23:51 | MASTER-Kislovodsk | (14h 52m 07.65s , +52d 51m 51.6s) | C | 180 | 17.0 |\n 1069 | 2023-06-22 00:35:21 | MASTER-SAAO | (00h 17m 30.82s , -15d 25m 31.9s) | C | 180 | 19.3 |\n 1249 | 2023-06-22 00:35:21 | MASTER-SAAO | (00h 17m 30.78s , -15d 25m 31.9s) | C | 540 | 20.1 | Coadd\n 1069 | 2023-06-22 00:35:21 | MASTER-SAAO | (00h 16m 42.49s , -15d 25m 31.0s) | C | 180 | 19.4 |\n 1249 | 2023-06-22 00:35:21 | MASTER-SAAO | (00h 16m 42.47s , -15d 25m 31.0s) | C | 540 | 20.1 | Coadd\n 1281 | 2023-06-22 00:38:53 | MASTER-SAAO | (00h 17m 30.50s , -15d 24m 29.7s) | C | 180 | 19.5 |\n 1281 | 2023-06-22 00:38:53 | MASTER-SAAO | (00h 16m 42.03s , -15d 24m 30.8s) | C | 180 | 19.5 |\n 1493 | 2023-06-22 00:42:24 | MASTER-SAAO | (00h 17m 36.10s , -15d 25m 30.2s) | C | 180 | 19.5 |\n 1493 | 2023-06-22 00:42:24 | MASTER-SAAO | (00h 16m 47.55s , -15d 25m 31.0s) | C | 180 | 19.5 |\n 1703 | 2023-06-22 00:45:55 | MASTER-SAAO | (00h 17m 30.79s , -15d 26m 31.6s) | C | 180 | 19.5 |\n 1703 | 2023-06-22 00:45:55 | MASTER-SAAO | (00h 16m 42.21s , -15d 26m 32.4s) | C | 180 | 19.4 |\n 8058 | 2023-06-22 02:31:50 | MASTER-SAAO | (04h 06m 16.71s , -38d 51m 26.1s) | C | 180 | 19.1 |\n 8058 | 2023-06-22 02:31:50 | MASTER-SAAO | (04h 07m 19.45s , -38d 53m 21.6s) | C | 180 | 18.7 |\n 8269 | 2023-06-22 02:35:21 | MASTER-SAAO | (04h 16m 26.57s , -38d 52m 02.1s) | C | 180 | 19.4 |\n 8269 | 2023-06-22 02:35:21 | MASTER-SAAO | (04h 17m 29.19s , -38d 53m 57.2s) | C | 180 | 18.9 |\n 12853 | 2023-06-22 03:51:44 | MASTER- | (07h 37m 23.10s , +40d 31m 11.9s) | C | 180 | 15.2 |\n 13536 | 2023-06-22 04:03:08 | MASTER- | (07h 47m 52.81s , +40d 31m 38.9s) | C | 180 | 14.1 |\n 19931 | 2023-06-22 05:49:43 | MASTER- | (10h 21m 08.12s , +38d 38m 12.6s) | C | 180 | 15.5 |\n 20270 | 2023-06-22 05:55:22 | MASTER- | (10h 31m 22.78s , +38d 40m 05.7s) | C | 180 | 16.7 |\n 20816 | 2023-06-22 06:04:27 | MASTER- | (10h 21m 03.64s , +38d 38m 25.1s) | C | 180 | 16.7 |\n 21354 | 2023-06-22 06:13:26 | MASTER- | (10h 31m 29.40s , +38d 38m 29.7s) | C | 180 | 17.3 |\n 35196 | 2023-06-22 10:05:02 | MASTER- | (14h 56m 22.83s , +74d 49m 53.9s) | C | 70 | 18.5 |\n 35296 | 2023-06-22 10:06:32 | MASTER- | (14h 56m 20.99s , +74d 51m 13.4s) | C | 90 | 18.4 |\n 35416 | 2023-06-22 10:08:22 | MASTER- | (14h 56m 22.55s , +74d 49m 48.6s) | C | 110 | 18.6 |\n 38702 | 2023-06-22 11:02:33 | MASTER- | (00h 44m 07.17s , +41d 56m 55.9s) | C | 180 | 17.4 |\n 38902 | 2023-06-22 11:05:54 | MASTER- | (00h 44m 11.99s , +41d 55m 28.7s) | C | 180 | 16.5 |\n 39103 | 2023-06-22 11:09:14 | MASTER- | (00h 44m 05.10s , +41d 54m 24.6s) | C | 180 | 15.9 |\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.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg3NDQ0MjI4LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.viyx46QuYFbQxKnqjYPXdML1M-ApQ2_DKqcnwGwhfTY\n\n",
"published": "2023-06-22T14:30:31.072118Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-06-22T14:30:31.072138Z",
"modified": "2023-06-22T14:30:31.077214Z",
"nonlocalizedevents": [
{
"event_id": "S230622e"
}
],
"targets": []
},
{
"id": 498,
"topic": "igwn.gwalert",
"uuid": "49ad4185-9304-4c3e-8c93-f381ede5ce82",
"title": "S230622ba - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230622ba/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230622ba/view/"
},
"event": {
"far": 5.179556e-08,
"time": "2023-06-22T14:35:36.733Z",
"group": "CBC",
"search": "AllSky",
"area_50": 310.1714577583519,
"area_90": 963.2992812911169,
"duration": null,
"pipeline": "MBTA",
"properties": {
"HasNS": 0.05842651391160886,
"HasMassGap": 0.012022222222222222,
"HasRemnant": 0.0
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"instruments": [
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"significant": true,
"skymap_hash": "dbbac0f1b19e5aa46f39c04813df7f05",
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"NSBH": 0.001091607,
"Terrestrial": 0.1290878
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"skymap_version": 0,
"central_frequency": null
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"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-06-22T14:36:03Z",
"superevent_id": "S230622ba",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-22T14:36:04.794430Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-22T14:36:04.794466Z",
"modified": "2023-06-22T14:36:04.799997Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 499,
"topic": "igwn.gwalert",
"uuid": "c1be56cd-7524-4ad3-8e60-3cdf97598360",
"title": "S230622ba - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230622ba/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230622ba/view/"
},
"event": {
"far": 5.179556e-08,
"time": "2023-06-22T14:35:36.733Z",
"group": "CBC",
"search": "AllSky",
"area_50": 310.1714577583519,
"area_90": 963.2992812911169,
"duration": null,
"pipeline": "MBTA",
"properties": {
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"HasRemnant": 0.0
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"instruments": [
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"significant": true,
"skymap_hash": "dbbac0f1b19e5aa46f39c04813df7f05",
"classification": {
"BBH": 0.869820598,
"BNS": 0.0,
"NSBH": 0.001091607,
"Terrestrial": 0.1290878
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-06-22T14:40:39Z",
"superevent_id": "S230622ba",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-22T14:40:40.354435Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-22T14:40:40.354457Z",
"modified": "2023-06-22T14:40:40.359291Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 500,
"topic": "igwn.gwalert",
"uuid": "6d3559cc-6efc-4711-ac83-cbf12bdd3fa8",
"title": "S230622bb - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230622bb/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230622bb/view/"
},
"event": {
"far": 2.471193e-06,
"time": "2023-06-22T14:44:21.521Z",
"group": "CBC",
"search": "AllSky",
"area_50": 1416.9374965277527,
"area_90": 5103.744656529106,
"duration": null,
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"NSBH": 0.000397089,
"Terrestrial": 0.831650974
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"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-06-22T14:49:50Z",
"superevent_id": "S230622bb",
"external_coinc": null
},
"message_text": "",
"published": "2023-06-22T14:49:52.561466Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-06-22T14:49:52.561493Z",
"modified": "2023-06-22T14:49:52.566454Z",
"nonlocalizedevents": [],
"targets": []
}
]
}
