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"title": "S230812b - PRELIMINARY",
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"topic": "igwn.gwalert",
"uuid": "ed399e85-6075-456b-ae5f-3f238f0c431b",
"title": "S230816t - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
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"id": 1959,
"topic": "gcn.circular",
"uuid": "3840ffa9-78c2-4722-98b8-89011677bbaf",
"title": "LIGO/Virgo/KAGRA S230810af: Retraction of GW compact binary merger candidate",
"submitter": "Hop gcn.circular",
"authors": "Jerome Novak <jerome.novak@obspm.fr>",
"data": {
"date": "23/08/10 11:19:49 GMT",
"from": "Jerome Novak <jerome.novak@obspm.fr>",
"title": "GCN CIRCULAR",
"number": "34378",
"subject": "LIGO/Virgo/KAGRA S230810af: Retraction of GW compact binary merger candidate"
},
"message_text": "The LIGO Scientific Collaboration, the Virgo Collaboration, and the KAGRA Collaboration report:\n\nThe trigger S230810af is no longer considered to be a candidate of interest. This candidate included at least one detection prior to the merge time but no significant detection that included the merger, which indicates this candidate is likely a noise transient.\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjkxNjY2MzkzLCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.w5a3_hOpSJKLdGo8wnHnbgj_Gs6q5FAh-W0aFZV5_qg\n\n",
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"id": 1960,
"topic": "gcn.circular",
"uuid": "a6cf8fd0-f225-4e2d-ac74-205d5ef525e6",
"title": "GRB 230805B: Swift-BAT refined analysis",
"submitter": "Hop gcn.circular",
"authors": "Sibasish Laha at NASA-GSFC <slaha@umbc.edu>",
"data": {
"date": "23/08/10 16:51:21 GMT",
"from": "Sibasish Laha at NASA-GSFC <slaha@umbc.edu>",
"title": "GCN CIRCULAR",
"number": "34379",
"subject": "GRB 230805B: Swift-BAT refined analysis"
},
"message_text": "H. A. Krimm (NSF), S. D. Barthelmy (GSFC),\nS. Laha (GSFC/UMBC), A. Y. Lien (U Tampa),\nC. B. Markwardt (GSFC),D. M. Palmer (LANL),\nT. Parsotan (GSFC/UMBC), T. Sakamoto (AGU),\nM. Stamatikos (OSU) (i.e. the Swift-BAT team):\n\nUsing the data set from T-40 to T+200 sec from the recent telemetry\ndownlink,\nwe report further analysis of BAT GRB 230805B (trigger #1183217)\n(Cenko et al., GCN Circ. 34339). The BAT ground-calculated position is\nRA, Dec = 207.738, 31.190 deg which is\n RA(J2000) = 13h 50m 57.2s\n Dec(J2000) = +31d 11' 23.0\"\nwith an uncertainty of 2.1 arcmin, (radius, sys+stat, 90% containment).\nThe partial coding was 41%.\n\nThe BAT light curve shows a complex structure with a duration of ~ 100 sec.\nT90 (15-350 keV) is 93.77 +- 18.83 sec (estimated error including\nsystematics).\n\nThe time-averaged spectrum from T-21.60 to T+103.27 sec is best fit by a\nsimple\npower-law model. The power law index of the time-averaged spectrum is\n1.36 +- 0.20. The fluence in the 15-150 keV band is 1.9 +- 0.2 x 10^-06\nerg/cm2.\nThe 1-sec peak photon flux measured from T-17.66 sec in the 15-150 keV band\nis 1.2 +- 0.3 ph/cm2/sec. All the quoted errors are at the 90% confidence\nlevel.\n\nThe results of the batgrbproduct analysis are available at\nhttp://gcn.gsfc.nasa.gov/notices_s/1183217/BA/\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjkxNjg2Mjg3LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.MzI61OTNhF8ORnCnoiMD2E0W7hoVTLOzOKeAa63JGAw\n\n",
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"uuid": "e7de9423-77d7-4237-b032-9bf8ab7e7261",
"title": "S230810ak - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
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"title": "S230810al - PRELIMINARY",
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"uuid": "1b40f9d7-bc5f-4c10-bfcf-4547bf87bfb2",
"title": "S230810ak - PRELIMINARY",
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{
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1400628200
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{
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{
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{
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},
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"published": "2024-05-24T23:24:59.279751Z",
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{
"id": 11719,
"topic": "lvk-users.beccatest",
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"title": "Generic Message",
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"range": 52.58238094915285
},
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"published": "2024-05-24T23:25:06.304708Z",
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"created": "2024-05-24T23:25:06.304723Z",
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{
"id": 1968,
"topic": "igwn.gwalert",
"uuid": "0d44f0ce-c95b-4b3e-a703-028d60158148",
"title": "S230811n - PRELIMINARY",
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"sequence_num": 2,
"time_created": "2023-08-11T03:26:27Z",
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},
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"published": "2023-08-11T03:26:28.410625Z",
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{
"id": 1969,
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"title": "S230811n - INITIAL",
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"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230811n/files/bayestar.multiorder.fits,1",
"gracedb": "https://gracedb.ligo.org/superevents/S230811n/view/"
},
"event": {
"far": 3.167545842243851e-10,
"time": "2023-08-11T03:21:16.293Z",
"group": "CBC",
"search": "AllSky",
"area_50": 249.1653009220652,
"area_90": 955.1161682503081,
"duration": null,
"pipeline": "pycbc",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.0,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": true,
"skymap_hash": "d31cd9b28e24eb6ead4b8e5b6c028c23",
"classification": {
"BBH": 0.9999781900061152,
"BNS": 0.0,
"NSBH": 0.0,
"Terrestrial": 2.1809993884791545e-05
},
"skymap_version": 1,
"central_frequency": null
},
"alert_type": "INITIAL",
"sequence_num": 3,
"time_created": "2023-08-11T03:51:03Z",
"superevent_id": "S230811n",
"external_coinc": null
},
"message_text": "",
"published": "2023-08-11T03:51:04.666510Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-08-11T03:51:04.666530Z",
"modified": "2023-08-11T03:51:04.669634Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1970,
"topic": "gcn.circular",
"uuid": "4ad85de7-68bd-4ae7-aa0e-a19475865fb9",
"title": "LIGO/Virgo/KAGRA S230811n: Identification of a GW compact binary merger candidate",
"submitter": "Hop gcn.circular",
"authors": "Shivaraj Kandhasamy at Inter-University Centre for Astronomy and Astrophysics (LVK collaboration) <shivaraj@iucaa.in>",
"data": {
"date": "23/08/11 04:07:27 GMT",
"from": "Shivaraj Kandhasamy at Inter-University Centre for Astronomy and Astrophysics (LVK collaboration) <shivaraj@iucaa.in>",
"title": "GCN CIRCULAR",
"number": "34380",
"subject": "LIGO/Virgo/KAGRA S230811n: Identification of a GW compact binary merger candidate"
},
"message_text": "The LIGO Scientific Collaboration, the Virgo Collaboration, and the\nKAGRA Collaboration report:\n\nWe identified the compact binary merger candidate S230811n during\nreal-time processing of data from LIGO Hanford Observatory (H1) and\nLIGO Livingston Observatory (L1) at 2023-08-11 03:21:16.293 UTC (GPS\ntime: 1375759294.293). The candidate was found by the CWB [1], GstLAL\n[2], MBTA [3], PyCBC Live [4], and SPIIR [5] analysis pipelines.\n\nS230811n is an event of interest because its false alarm rate, as\nestimated by the online analysis, is 3.2e-10 Hz, or about one in 1e2\nyears. The event's properties can be found at this URL:\n\nhttps://gracedb.ligo.org/superevents/S230811n\n\nThe classification of the GW signal, in order of descending\nprobability, is BBH (>99%), Terrestrial (<1%), BNS (<1%), or NSBH\n(<1%).\n\nAssuming the candidate is astrophysical in origin, the probability\nthat the lighter compact object is consistent with a neutron star mass\n(HasNS) is <1%. [6] Using the masses and spins inferred from the\nsignal, the probability of matter outside the final compact object\n(HasRemnant) is <1%. [6] Both HasNS and HasRemnant consider the\nsupport of several neutron star equations of state. The probability\nthat either of the binary components lies between 3 and 5 solar masses\n(HasMassgap) is <1%.\n\nTwo sky maps are available at this time and can be retrieved from the\nGraceDB event page:\n * bayestar.multiorder.fits,1, an initial localization generated by\nBAYESTAR [7], distributed via GCN notice about 30 seconds after the\ncandidate event time.\n * bayestar.multiorder.fits,2, an initial localization generated by\nBAYESTAR [7], distributed via GCN notice about 5 minutes after the\ncandidate event time.\n\nThe preferred sky map at this time is bayestar.multiorder.fits,2. For\nthe bayestar.multiorder.fits,2 sky map, the 90% credible region is 955\ndeg2. Marginalized over the whole sky, the a posteriori luminosity\ndistance estimate is 2530 +/- 777 Mpc (a posteriori mean +/- standard\ndeviation).\n\nFor further information about analysis methodology and the contents of\nthis alert, refer to the LIGO/Virgo/KAGRA Public Alerts User Guide\nhttps://emfollow.docs.ligo.org/userguide/.\n\n [1] Klimenko et al. PRD 93, 042004 (2016)\n [2] Tsukada et al. arXiv:2305.06286 (2023) and Ewing et al.\narXiv:2305.05625 (2023)\n [3] Aubin et al. CQG 38, 095004 (2021)\n [4] Dal Canton et al. ApJ 923, 254 (2021)\n [5] Chu et al. PRD 105, 024023 (2022)\n [6] Chatterjee et al. ApJ 896, 54 (2020)\n [7] Singer & Price PRD 93, 024013 (2016)\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjkxNzI2ODUzLCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.T_rQmHN9NM3OqyNannpJfdR7H2_dapVcSQ-Ks5dbaoo\n\n",
"published": "2023-08-11T04:07:41.425935Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-08-11T04:07:41.425952Z",
"modified": "2023-08-11T04:07:41.430394Z",
"nonlocalizedevents": [
{
"event_id": "S230811n"
}
],
"targets": []
},
{
"id": 1971,
"topic": "hermes.message",
"uuid": "e0122e68-1ed1-48fa-af30-f649e0a12cbb",
"title": "INTEGRAL follow-up of S230808ae",
"submitter": "Volodymyr Savchenko",
"authors": "",
"data": {},
"message_text": "INTEGRAL follow-up of S230808ae at 2023-08-08T22:43:15.000\n\n\nSPI-ACS excesses:\nat T0+43.45 FAP = 0.057\nat T0+-277.1 FAP = 0.12\n\n\n\n\nnext break in data in 37 hr: 2023-08-10T11:43:58, for 9.3 hr",
"published": "2023-08-11T07:56:50.478170Z",
"message_parser": "Hermes Message Parser v2",
"retracted": false,
"created": "2023-08-11T07:56:50.478195Z",
"modified": "2023-08-11T07:56:50.486145Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1972,
"topic": "hermes.message",
"uuid": "55d0a9e2-310f-4656-ae2d-ffc93dc684a3",
"title": "INTEGRAL follow-up of S230809aj",
"submitter": "Volodymyr Savchenko",
"authors": "",
"data": {},
"message_text": "INTEGRAL follow-up of S230809aj at 2023-08-09T04:54:07.000\n\n\nSPI-ACS excesses:\nat T0+-12.09 FAP = 0.283\nat T0+7.84 FAP = 0.402\nat T0+-121.49 FAP = 0.793\nat T0+17.96 FAP = 0.941\n\n\n\n\nnext break in data in 31 hr: 2023-08-10T11:43:58, for 9.3 hr",
"published": "2023-08-11T08:28:34.326590Z",
"message_parser": "Hermes Message Parser v2",
"retracted": false,
"created": "2023-08-11T08:28:34.326607Z",
"modified": "2023-08-11T08:28:34.331642Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1973,
"topic": "hermes.message",
"uuid": "231312db-5808-4c7e-836d-27eec5dfc7d0",
"title": "INTEGRAL follow-up of S230809z",
"submitter": "Volodymyr Savchenko",
"authors": "",
"data": {},
"message_text": "INTEGRAL follow-up of S230809z at 2023-08-09T04:49:00.000\n\n\nSPI-ACS excesses:\nat T0+2.04 FAP = 0.022\nat T0+-5.31 FAP = 0.033\nat T0+-48.19 FAP = 0.062\nat T0+-24.59 FAP = 0.185\nat T0+-45.81 FAP = 0.5\nat T0+-12.64 FAP = 0.533\nat T0+-97.94 FAP = 0.57\nat T0+-19.96 FAP = 0.844\n\n\n\n\nnext break in data in 31 hr: 2023-08-10T11:43:58, for 9.3 hr",
"published": "2023-08-11T08:45:12.678542Z",
"message_parser": "Hermes Message Parser v2",
"retracted": false,
"created": "2023-08-11T08:45:12.678583Z",
"modified": "2023-08-11T08:45:12.690134Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1974,
"topic": "hermes.message",
"uuid": "47a58df4-c33a-4214-8fe8-105478818b67",
"title": "INTEGRAL follow-up of S230810y",
"submitter": "Volodymyr Savchenko",
"authors": "",
"data": {},
"message_text": "INTEGRAL follow-up of S230810y at 2023-08-10T09:26:09.000\n\n\nSPI-ACS excesses:\nat T0+0.05 FAP = 0.002\nat T0+15.92 FAP = 0.146\nat T0+6.1 FAP = 0.253\nat T0+-9.98 FAP = 0.382\n\n\n\n\nnext break in data in 2.3 hr: 2023-08-10T11:43:58, for 9.3 hr",
"published": "2023-08-11T09:32:35.536930Z",
"message_parser": "Hermes Message Parser v2",
"retracted": false,
"created": "2023-08-11T09:32:35.536954Z",
"modified": "2023-08-11T09:32:35.543178Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1975,
"topic": "hermes.message",
"uuid": "3164cf8e-aff3-496c-8c02-8dcd78482869",
"title": "INTEGRAL follow-up of S230809g",
"submitter": "Volodymyr Savchenko",
"authors": "",
"data": {},
"message_text": "INTEGRAL follow-up of S230809g at 2023-08-09T01:14:47.000\n\n\nSPI-ACS excesses:\nat T0+-52.4 FAP = 0.658\nat T0+13.43 FAP = 0.897\n\n\n\n\nnext break in data in 34 hr: 2023-08-10T11:43:58, for 9.3 hr",
"published": "2023-08-11T10:27:10.908235Z",
"message_parser": "Hermes Message Parser v2",
"retracted": false,
"created": "2023-08-11T10:27:10.908260Z",
"modified": "2023-08-11T10:27:10.911863Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 2548,
"topic": "igwn.gwalert",
"uuid": "293efad6-188e-4b37-be73-a013c8aab39b",
"title": "S230828n - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230828n/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230828n/view/"
},
"event": {
"far": 4.985237289029823e-06,
"time": "2023-08-28T06:33:55.942Z",
"group": "CBC",
"search": "AllSky",
"area_50": 525.1879984908876,
"area_90": 2054.5908434769367,
"duration": null,
"pipeline": "gstlal",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.03846153846153846,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "2185920d15989b8e5673585ed8d29383",
"classification": {
"BBH": 0.3007748110197759,
"BNS": 5.039193672100748e-16,
"NSBH": 3.175487138345006e-14,
"Terrestrial": 0.6992251889801919
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-08-28T06:34:22Z",
"superevent_id": "S230828n",
"external_coinc": null
},
"message_text": "",
"published": "2023-08-28T06:34:23.690653Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-08-28T06:34:23.690684Z",
"modified": "2023-08-28T06:34:23.696436Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 4242,
"topic": "igwn.gwalert",
"uuid": "53bcbadc-e49f-4e05-abc1-ca366c401878",
"title": "S231028bg - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S231028bg/files/bayestar.multiorder.fits,1",
"gracedb": "https://gracedb.ligo.org/superevents/S231028bg/view/"
},
"event": {
"far": 7.633333220095278e-31,
"time": "2023-10-28T15:30:06.253Z",
"group": "CBC",
"search": "AllSky",
"area_50": 303.08991762688265,
"area_90": 1177.9486310538728,
"duration": null,
"pipeline": "gstlal",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.0,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": true,
"skymap_hash": "8e8adb84a0ae18bcd46226dbe0744b15",
"classification": {
"BBH": 1.0,
"BNS": 1.833375655069085e-96,
"NSBH": 7.593057087545582e-84,
"Terrestrial": 0.0
},
"skymap_version": 1,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 3,
"time_created": "2023-10-28T15:35:12Z",
"superevent_id": "S231028bg",
"external_coinc": null
},
"message_text": "",
"published": "2023-10-31T23:27:54.837723Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-10-31T23:27:54.837750Z",
"modified": "2023-10-31T23:27:54.843056Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 3287,
"topic": "gcn.circular",
"uuid": "7293209a-d9b2-4464-9de5-3f06d6dfca70",
"title": "LIGO/Virgo/KAGRA S230917af: Zwicky Transient Facility observations",
"submitter": "Hop gcn.circular",
"authors": "Tomas Ahumada Mena at Caltech <tahumada@caltech.edu>",
"data": {
"date": "23/09/22 00:23:43 GMT",
"from": "Tomas Ahumada Mena at Caltech <tahumada@caltech.edu>",
"title": "GCN CIRCULAR",
"number": "34755",
"subject": "LIGO/Virgo/KAGRA S230917af: Zwicky Transient Facility observations"
},
"message_text": "Tomas Ahumada (CIT), Vishwajeet Swain (IITB), Shreya Anand (CIT), Robert Stein (CIT), Viraj Karambelkar (CIT), Akash Anumarlapudi (UWM), Mansi Kasliwal (CIT), Anirudh Salgundi (IITB), Gaurav Waratkar (IITB), Avery Wold (IPAC), Theophile du Laz (CIT), Simeon Reusch (DESY), Igor Andreoni (SURA), Eric Bellm (UW), Varun Bhalerao (IITB), Brad Cenko (UMD), Michael Coughlin (UMN), Brian Healy (UMN), David Kaplan (UWM), Jannis Necker (DESY), D. Perley (LJMU) report on behalf of the ZTF and GROWTH collaborations:\n\nWe observed the localization region of the LVC trigger S230917af as part of routine Zwicky Transient Facility (ZTF; Graham et al., 2019; Bellm et al., 2019) survey operations. We obtained images in the r and g bands beginning at 2023-09-17T10:05:51 UT (8 seconds after the LVC trigger time), covering ~83% of the probability enclosed in the localization region. Our observations covered ~92% of the overlapping region between the MAXI low significance burst (GCN 34723) and the GW event.\n\nWe queried the ZTF alert stream using Kowalski (Duev et al. 2019) through Fritz (Coughlin et al. 2023), AMPEL (Nordin et al. 2019), and ZTFReST (Andreoni & Coughlin et al., 2021). We required at least 2 detections separated by at least 15 minutes to select against moving objects. Furthermore, we cross-match our candidates with the Minor Planet Center to flag known asteroids, reject stellar sources (Tachibana and Miller 2018), and apply machine learning algorithms (Mahabal et al. 2019). We require that no spatially coincident ZTF alerts were issued before the detection time of the LVC trigger. We also run forced photometry on ZTF images (Masci et al. 2019) and require no detections before the LVC trigger.\n\nNo candidates passed our filtering criteria. Furthermore, we run forced photometry over two years of ZTF data at the center of the Swift sources circulated in Evans et al. (GCN 34736) with a 1 arcsec radius, and we queried ZTF alerts within their 90% error region. Three of the six Swift sources have previous detections and can be associated to ZTF objects. These sources are unlikely to be associated with the GW trigger:\n\nSwift name | ZTF name | JD discovery | magnitude at discovery\n---------------------------------------------------------------\nS230917af_X9 | ZTF18abvbsom | 2460152.82912 | g = 20.24\nS230917af_X1 | ZTF18abvucic | 2460206.80333 | g = 18.93\nS230917af_X10 | ZTF18abvzkzr | 2459817.80154 | g = 20.44\n\nNo predetections or alerts in the ZTF archive were found for the Swift sources S230917af_X3, S230917af_X4, and S230917af_X6. However, we note that (1) S230917af_X3 is 2.3 arcsec from a GALEX point-like UV source, at nuv = 20.03 mag, (2) S230917af_X4 is 2.5 arcsec from a Gaia source at g = 20.62 mag with a proper motion ~5.16 mas/year, and (3) S230917af_X6 is 9 arcsec from a WISE galaxy and its colors (W1-W2 = 0.9 mag, and W2-W3 = 2.6 mag) are indicative of a QSO/Seyfert galaxy.\n\n\nZTF and GROWTH are worldwide collaborations comprising Caltech, USA; IPAC, USA, WIS, Israel; OKC, Sweden; JSI/UMd, USA; U Washington, USA; DESY, Germany; MOST, Taiwan; UW Milwaukee, USA; LANL USA; Tokyo Tech, Japan; IITB, India; IIA, India; LJMU, UK; TTU, USA; SDSU, USA and USyd, Australia. ZTF acknowledges the generous support of the NSF under AST MSIP Grant No 1440341. GROWTH acknowledges the generous support of the NSF under PIRE Grant No 1545949. Alert distribution service provided by DIRAC@UW (Patterson et al. 2019). Alert database searches are done by AMPEL (Nordin et al. 2019) and Kowalski (Duev et al. 2019). GROWTH India telescope is located at the Indian Astronomical Observatory (Hanle), operated by the Indian Institute of Astrophysics (IIA). GROWTH-India project is supported by SERB and administered by IUSSTF, under grant number IUSSTF/PIRE Program/GROWTH/2015-16 and IUCAA.\n\n\n\n\n\nView this GCN Circular online at https://gcn.nasa.gov/circulars/34755.\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjk1MzQyMjI5LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.dR1Tb6xw6cwwD_quM1qrGaOHbP7q9KuUUZNEHEPvmzU\n\n",
"published": "2023-09-22T00:23:58.970057Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-09-22T00:23:58.970078Z",
"modified": "2023-09-22T00:23:58.979842Z",
"nonlocalizedevents": [
{
"event_id": "S230917a"
}
],
"targets": []
},
{
"id": 11723,
"topic": "lvk-users.beccatest",
"uuid": "6c8094ff-5eea-44d7-ad55-0c1e35862714",
"title": "Generic Message",
"submitter": "",
"authors": "",
"data": {
"ifo": [
"H1"
],
"time": [
1400628500
],
"range": 146.4072378132852
},
"message_text": "",
"published": "2024-05-24T23:28:18.812323Z",
"message_parser": "",
"retracted": false,
"created": "2024-05-24T23:28:18.812337Z",
"modified": "2024-05-24T23:28:18.812342Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 2008,
"topic": "igwn.gwalert",
"uuid": "c420f815-5e67-413d-94c5-afb7e40b0983",
"title": "S230812be - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230812be/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230812be/view/"
},
"event": {
"far": 1.951936774365928e-05,
"time": "2023-08-12T16:14:10.364Z",
"group": "CBC",
"search": "AllSky",
"area_50": 790.4047903776165,
"area_90": 3077.689796989349,
"duration": null,
"pipeline": "pycbc",
"properties": {
"HasNS": 1.0,
"HasMassGap": 0.9882579676092084,
"HasRemnant": 0.007589333247204356
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "0253ecbd01295160ae5c9eff2b8331e0",
"classification": {
"BBH": 0.0,
"BNS": 0.0004432380763840503,
"NSBH": 0.0008235228939726417,
"Terrestrial": 0.9987332390296433
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-08-12T16:14:37Z",
"superevent_id": "S230812be",
"external_coinc": null
},
"message_text": "",
"published": "2023-08-12T16:14:38.219795Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-08-12T16:14:38.219812Z",
"modified": "2023-08-12T16:14:38.224944Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 2009,
"topic": "igwn.gwalert",
"uuid": "f057f3a6-b45d-4386-b952-9c7ba25d1ac0",
"title": "S230812be - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230812be/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230812be/view/"
},
"event": {
"far": 1.951936774365928e-05,
"time": "2023-08-12T16:14:10.364Z",
"group": "CBC",
"search": "AllSky",
"area_50": 790.4047903776165,
"area_90": 3077.689796989349,
"duration": null,
"pipeline": "pycbc",
"properties": {
"HasNS": 1.0,
"HasMassGap": 0.9882579676092084,
"HasRemnant": 0.007589333247204356
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "0253ecbd01295160ae5c9eff2b8331e0",
"classification": {
"BBH": 0.0,
"BNS": 0.0004432380763840503,
"NSBH": 0.0008235228939726417,
"Terrestrial": 0.9987332390296433
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-08-12T16:19:11Z",
"superevent_id": "S230812be",
"external_coinc": null
},
"message_text": "",
"published": "2023-08-12T16:19:12.971009Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-08-12T16:19:12.971026Z",
"modified": "2023-08-12T16:19:12.974420Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 2010,
"topic": "gcn.circular",
"uuid": "79d9af52-ba10-475f-9183-01c39dc7c9c2",
"title": "Fermi trigger No 713525317: 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": "23/08/12 16:45:39 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "34384",
"subject": "Fermi trigger No 713525317: 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 Fermi GRB230812.39 (trigger No 713525317,19h 36m 48.00s , -32d 09m 36.0s, R=4.53) errorbox 569 sec after notice time and 603 sec after trigger time at 2023-08-12 09:38:35 UT, with upper limit up to 15.4 mag. The observations began at zenith distance = 83 deg. The sun altitude is -20.7 deg.\n\nThe galactic latitude b = -24 deg., longitude l = 8 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/observ.php?id\"53135\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 664 | 2023-08-12 09:38:35 | MASTER-OAFA | (19h 35m 05.13s , -32d 11m 16.7s) | C | 120 | 15.4 |\n 830 | 2023-08-12 09:41:07 | MASTER-OAFA | (19h 34m 59.66s , -32d 12m 15.9s) | C | 150 | 14.8 |\n 1046 | 2023-08-12 09:44:28 | MASTER-OAFA | (19h 35m 04.86s , -32d 12m 11.3s) | C | 180 | 14.7 |\n 1258 | 2023-08-12 09:48:00 | MASTER-OAFA | (19h 35m 01.58s , -32d 10m 31.0s) | C | 180 | 15.1 |\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.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjkxODU4NzQ1LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.odhoAIoLSqYQaEG2qLGY_HOUt90IjaJ5YjieD8rpW8k\n\n",
"published": "2023-08-12T16:45:53.638654Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-08-12T16:45:53.638670Z",
"modified": "2023-08-12T16:45:53.642580Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 2011,
"topic": "igwn.gwalert",
"uuid": "0340bf33-9b05-4bd4-a486-1243a3811e64",
"title": "S230812bo - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230812bo/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230812bo/view/"
},
"event": {
"far": 4.486945938769296e-06,
"time": "2023-08-12T18:13:41.236Z",
"group": "CBC",
"search": "AllSky",
"area_50": 245.38847951861496,
"area_90": 1257.261880526328,
"duration": null,
"pipeline": "gstlal",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.0,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "7f98be15427e2368bee890fed1919ffe",
"classification": {
"BBH": 0.3120893017622228,
"BNS": 2.25784463568647e-28,
"NSBH": 1.9801161103430016e-26,
"Terrestrial": 0.6879106982377772
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-08-12T18:14:02Z",
"superevent_id": "S230812bo",
"external_coinc": null
},
"message_text": "",
"published": "2023-08-12T18:14:03.589021Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-08-12T18:14:03.589043Z",
"modified": "2023-08-12T18:14:03.593061Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 2012,
"topic": "gcn.circular",
"uuid": "c780f3d9-d50f-436d-bc8c-baee36dcb1ef",
"title": "ZTF23aaoohpy/AT2023lcr: JWST spectroscopy confirmation of an associated type Ic-BL supernova",
"submitter": "Hop gcn.circular",
"authors": "Antonio Martin-Carrillo at UCD,Space Science Group <antonio.martin-carrillo@ucd.ie>",
"data": {
"date": "23/08/12 18:14:52 GMT",
"from": "Antonio Martin-Carrillo at UCD,Space Science Group <antonio.martin-carrillo@ucd.ie>",
"title": "GCN CIRCULAR",
"number": "34385",
"subject": "ZTF23aaoohpy/AT2023lcr: JWST spectroscopy confirmation of an associated type Ic-BL supernova"
},
"message_text": "A. Martin-Carrillo (UCD), A. J. Levan (Radboud), A. de Ugarte Postigo (OCA/CNRS), L. Izzo (INAF-OACN and DARK/NBI), B. Schneider (MIT), T. Laskar (Utah), B. P. Gompertz (U. Birmingham), D. B. Malesani (Radboud and DAWN/NBI), G. Finneran (UCD), J.F. Agui Fernandez (IAA-CSIC), C.C. Thoene (ASU-CAS), V. D'Elia (ASI-SSDC and INAF-OAR), N.R. Tanvir (U. Leicester), P. Jakobsson (U. Iceland) and G. Pugliese (API, Amsterdam) report on behalf of a larger collaboration:\n\nWe obtained spectroscopic observations of the orphan GRB afterglow candidate ZTF23aaoohpy/AT2023lcr (Andreoni et al., GCN 3402; Swain et al., GCN 34022; Kumar et al., GCN 34025; Adami et al., GCN 34030; Perley et al., GCN 34031; Jiang et al., GCN 34040; Chen et al., GCN 34043) with the James Webb Space Telescope on 12 August 2023 (DDT program 4554, PI Martin-Carrillo). This was about 55 days (27 days rest frame) after the likely explosion epoch of the event (Gompertz et al., GCN 34023). Observations were obtained with the NIRSpec clear prism in the 0.5-5.3 micron wavelength range.\n\nAssuming a redshift of z=1.027 (Perley et al. GCN 34041), the obtained spectrum shows an excellent match to the spectrum of GRB-SN 1998bw (at 22 days) and 2017iuk (at 26 days), confirming the presence of a supernova component initially hinted by photometric observations (Martin-Carrillo et al., GCN 34370). Based on the observed spectral properties, we identify the supernova associated to ZTF23aaoohpy/AT2023lcr as a broad-lined type Ic SN similar to other SNe accompanying GRBs. To date, this is the furthest GRB-SN association with robust spectroscopic confirmation.\n\nFurther analysis and observations are ongoing.\n\nWe thank the staff of STScI for their work to get these observations rapidly scheduled, in particular Alison Vick, Tony Keyes, Mario Gennaro and Armin Rest.\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjkxODY0MDk4LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.obUtPn2bxLlFxV_WK50r7MtzqFJ7xXf3ELoLg3UdMCc\n\n",
"published": "2023-08-12T18:15:03.726146Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-08-12T18:15:03.726164Z",
"modified": "2023-08-12T18:15:03.729741Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 2013,
"topic": "igwn.gwalert",
"uuid": "6b110826-43d9-4e6b-92d4-1c08ddc9cbce",
"title": "S230812bo - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230812bo/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230812bo/view/"
},
"event": {
"far": 4.486945938769296e-06,
"time": "2023-08-12T18:13:41.236Z",
"group": "CBC",
"search": "AllSky",
"area_50": 245.38847951861496,
"area_90": 1257.261880526328,
"duration": null,
"pipeline": "gstlal",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.0,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "7f98be15427e2368bee890fed1919ffe",
"classification": {
"BBH": 0.3120893017622228,
"BNS": 2.25784463568647e-28,
"NSBH": 1.9801161103430016e-26,
"Terrestrial": 0.6879106982377772
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-08-12T18:18:37Z",
"superevent_id": "S230812bo",
"external_coinc": null
},
"message_text": "",
"published": "2023-08-12T18:18:38.371514Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-08-12T18:18:38.371534Z",
"modified": "2023-08-12T18:18:38.374936Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 2034,
"topic": "gcn.circular",
"uuid": "1585cebe-f9dd-48a4-995d-ab08cb853d13",
"title": "GRB 230812B: Swift-XRT afterglow detection",
"submitter": "Hop gcn.circular",
"authors": "Phil Evans at U of Leicester <pae9@star.le.ac.uk>",
"data": {
"date": "23/08/13 09:01:52 GMT",
"from": "Phil Evans at U of Leicester <pae9@star.le.ac.uk>",
"title": "GCN CIRCULAR",
"number": "34400",
"subject": "GRB 230812B: Swift-XRT afterglow detection"
},
"message_text": "A.P. Beardmore (U. Leicester), A. Melandri (INAF-OAR), T. Sbarrato\n(INAF-OAB), P. D'Avanzo (INAF-OAB), J.A. Kennea (PSU), A. Tohuvavohu\n(U. Toronto), D.N. Burrows (PSU), J.P. Osborne (U. Leicester) and P.A.\nEvans (U. Leicester) reports on behalf of the Swift-XRT team:\n\nSwift-XRT has performed follow-up observations of the\nFermi/GBM-detected burst GRB 230812B in a series of observations tiled\non the sky. The total exposure time is 8.3 ks, distributed over 27\ntiles; the maximum exposure at a single sky location was 4.6 ks. The\ndata were collected between T0+25.4 ks and T0+38.1 ks, and are entirely\nin Photon Counting (PC) mode.\n\nFour uncatalogued X-ray sources are detected, of which one (\"Source 7\")\nis above the RASS 3-sigma upper limit at this position, and is\ntherefore likely the GRB afterglow. Using 4926 s of PC mode data and 4\nUVOT images, we find an enhanced XRT position (using the XRT-UVOT\nalignment and matching UVOT field sources to the USNO-B1 catalogue):\nRA, Dec = 249.13196, +47.85892 which is equivalent to:\n\nRA (J2000): 16h 36m 31.67s\nDec(J2000): +47d 51' 32.1\"\n\nwith an uncertainty of 2.1 arcsec (radius, 90% confidence). This\nposition is 106.5 arcmin from the Fermi/GBM position, but only 6.7\narcmin from the Fermi/LAT position.\n\nThe light curve can be modelled with a power-law decay with a decay\nindex of alpha=1.8 (+/-0.4).\n\nA spectrum formed from the PC mode data can be fitted with an absorbed\npower-law with a photon spectral index of 1.82 (+/-0.15). The\nbest-fitting absorption column is 9.6 (+4.3, -3.9) x 10^20 cm^-2, in\nexcess of the Galactic value of 2.0 x 10^20 cm^-2 (Willingale et al.\n2013). The counts to observed (unabsorbed) 0.3-10 keV flux conversion\nfactor deduced from this spectrum is 3.4 x 10^-11 (4.0 x 10^-11) erg\ncm^-2 count^-1.\n\nA summary of the PC-mode spectrum is thus:\nTotal column:\t 9.6 (+4.3, -3.9) x 10^20 cm^-2\nGalactic foreground: 2.0 x 10^20 cm^-2\nExcess significance: 3.2 sigma\nPhoton index:\t 1.82 (+/-0.15)\n\nIf the light curve continues to decay with a power-law decay index of\n1.8, the count rate at T+24 hours will be 0.038 count s^-1,\ncorresponding to an observed (unabsorbed) 0.3-10 keV flux of 1.3 x\n10^-12 (1.5 x 10^-12) erg cm^-2 s^-1.\n\nThe results of the XRT-team automatic analysis are available at\nhttp://www.swift.ac.uk/xrt_products/00021589.\nThe results of the full analysis of the tiled XRT observations are\navailable at https://www.swift.ac.uk/xrt_products/TILED_GRB00115.\n\nThis circular is an official product of the Swift-XRT team.\n\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjkxOTE3MzE0LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.YQ3w03SOnbfvOj_TgZhvfs0BsFCxISV-_nnoRiCaIGE\n\n",
"published": "2023-08-13T09:01:58.858984Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-08-13T09:01:58.859001Z",
"modified": "2023-08-13T09:01:58.862650Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 2035,
"topic": "igwn.gwalert",
"uuid": "1da7ec11-aa2e-41ca-be69-2ac3fcbbd2fe",
"title": "S230813ae - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230813ae/files/cwb.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230813ae/view/"
},
"event": {
"far": 8.32084e-06,
"time": "2023-08-13T09:24:44.148Z",
"group": "Burst",
"search": "BBH",
"area_50": 1991.6438200860991,
"area_90": 6652.241431943711,
"duration": 0.011143,
"pipeline": "CWB",
"properties": {},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "a8da14d6c327f713764cba1e1ba726ac",
"classification": {},
"skymap_version": 0,
"central_frequency": 110.74057
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-08-13T09:27:44Z",
"superevent_id": "S230813ae",
"external_coinc": null
},
"message_text": "",
"published": "2023-08-13T09:27:45.508783Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-08-13T09:27:45.508802Z",
"modified": "2023-08-13T09:27:45.512644Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 2122,
"topic": "igwn.gwalert",
"uuid": "135a53b3-0e0c-4b17-93b3-b6d522797db2",
"title": "S230816t - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230816t/files/cwb.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230816t/view/"
},
"event": {
"far": 1.02048e-05,
"time": "2023-08-16T08:54:40.527Z",
"group": "Burst",
"search": "BBH",
"area_50": 1722.2305599733147,
"area_90": 7010.6198184488785,
"duration": 0.065841,
"pipeline": "CWB",
"properties": {},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "c5132e72491552d0d6e788381abb1906",
"classification": {},
"skymap_version": 0,
"central_frequency": 24.258614
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-08-16T09:00:31Z",
"superevent_id": "S230816t",
"external_coinc": null
},
"message_text": "",
"published": "2023-08-16T09:00:32.647024Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-08-16T09:00:32.647046Z",
"modified": "2023-08-16T09:00:32.651593Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 2014,
"topic": "gcn.circular",
"uuid": "988b94ee-413c-4352-961b-622ccd4be9b1",
"title": "GRB 230812B: Fermi GBM Final Real-time Localization",
"submitter": "Hop gcn.circular",
"authors": "Fermi GBM Team at MSFC/Fermi-GBM <do_not_reply@GIOC.nsstc.nasa.gov>",
"data": {
"date": "23/08/12 19:08:45 GMT",
"from": "Fermi GBM Team at MSFC/Fermi-GBM <do_not_reply@GIOC.nsstc.nasa.gov>",
"title": "GCN CIRCULAR",
"number": "34386",
"subject": "GRB 230812B: Fermi GBM Final Real-time Localization"
},
"message_text": "The Fermi GBM team reports the detection of a likely LONG GRB\n\nAt 18:58:12 UT on 12 Aug 2023, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 230812B (trigger 713559497.049606 / 230812790).\n\nThe on-ground calculated location, using the Fermi GBM trigger data, is RA = 250.1, Dec = 46.2 (J2000 degrees, equivalent to J2000 16h 40m, 46d 12'), with a statistical uncertainty of 1.0 degrees.\n\nThe angle from the Fermi LAT boresight is 29.0 degrees.\n\nThe skymap can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn230812790/quicklook/glg_skymap_all_bn230812790.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/bn230812790/quicklook/glg_healpix_all_bn230812790.fit\n\nThe GBM light curve can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn230812790/quicklook/glg_lc_medres34_bn230812790.gif\n\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjkxODY3MzMxLCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.nhYsma0WLpqBKXxeidJ1iQkVzVx94wwpjgzwJPVwlTc\n\n",
"published": "2023-08-12T19:08:56.838696Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-08-12T19:08:56.838714Z",
"modified": "2023-08-12T19:08:56.843190Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 2015,
"topic": "gcn.circular",
"uuid": "e40a72ab-4c6d-4a0f-bd82-c97b3f3c7c3a",
"title": "GRB 230812B: Fermi GBM detection of an extremely bright GRB",
"submitter": "Hop gcn.circular",
"authors": "Stephen Lesage at Fermi-GBM Team <sjl0014@uah.edu>",
"data": {
"date": "23/08/12 19:51:19 GMT",
"from": "Stephen Lesage at Fermi-GBM Team <sjl0014@uah.edu>",
"title": "GCN CIRCULAR",
"number": "34387",
"subject": "GRB 230812B: Fermi GBM detection of an extremely bright GRB"
},
"message_text": "S. Lesage (UAH), E. Burns (LSU), S. Dalessi (UAH), and O. Roberts (USRA)\nreport on behalf of the Fermi GBM Team:\n\n\"At 18:58:12 UT on 12 August 2023, the Fermi Gamma-ray Burst Monitor (GBM)\ntriggered and located GRB 230812B (trigger 713559497/230812790).\n\nThe GBM light curve consists of an extremely bright short pulse, with the bulk of the emission during the first 2 seconds, and continued emission out to roughly 20 seconds. This event, if it is a GRB, it is extremely bright and follow-up across all wavelengths is encouraged.\n\nThe on-ground calculated location, using the Fermi GBM trigger data,\nis RA = 250.06, Dec = 46.20 (J2000 degrees, equivalent to J2000 16h 40m, +46d 12'), with a statistical uncertainty of 1.00 degree\n(radius, 1-sigma containment,\nstatistical only; there is additionally a systematic\nerror which we have characterized as a core-plus-tail model, with 90% of\nGRBs having a 3.7 deg error and a small tail suffering a larger than 10 deg systematic error. [Connaughton et al. 2015, ApJS, 216, 32] ).\n\nThe angle from the Fermi LAT boresight is 29 degrees.\n\nThe skymap can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn230812790/quicklook/glg_skymap_all_bn230812790.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/bn230812790/quicklook/glg_healpix_all_bn230812790.fit\n\nThe GBM light curve can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn230812790/quicklook/glg_lc_medres34_bn230812790.gif\"\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjkxODY5ODg1LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.SakzRbVMtCz3jocAD7Nn8awm0dopYLrKZL1GzHHNcqw\n\n",
"published": "2023-08-12T19:51:31.275130Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-08-12T19:51:31.275150Z",
"modified": "2023-08-12T19:51:31.279699Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 2016,
"topic": "igwn.gwalert",
"uuid": "85c33fe0-98fb-4022-aa8a-832a8ccd8361",
"title": "S230812bu - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230812bu/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230812bu/view/"
},
"event": {
"far": 6.223357104317984e-06,
"time": "2023-08-12T20:11:12.218Z",
"group": "CBC",
"search": "AllSky",
"area_50": 1833.2271445524914,
"area_90": 7355.569506630668,
"duration": null,
"pipeline": "spiir",
"properties": {
"HasNS": 1.0,
"HasMassGap": 0.05584942834942835,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "6461c03726d50a57088665fc970b1fe6",
"classification": {
"BBH": 0.0563723207909172,
"BNS": 0.0,
"NSBH": 0.14924961379285742,
"Terrestrial": 0.7943780654162254
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-08-12T20:11:36Z",
"superevent_id": "S230812bu",
"external_coinc": null
},
"message_text": "",
"published": "2023-08-12T20:11:38.278365Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-08-12T20:11:38.278384Z",
"modified": "2023-08-12T20:11:38.281809Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 2017,
"topic": "igwn.gwalert",
"uuid": "28c14d30-8655-467f-8dfa-95f6b33653a2",
"title": "S230812bu - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230812bu/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230812bu/view/"
},
"event": {
"far": 6.223357104317984e-06,
"time": "2023-08-12T20:11:12.218Z",
"group": "CBC",
"search": "AllSky",
"area_50": 1833.2271445524914,
"area_90": 7355.569506630668,
"duration": null,
"pipeline": "spiir",
"properties": {
"HasNS": 1.0,
"HasMassGap": 0.05584942834942835,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "6461c03726d50a57088665fc970b1fe6",
"classification": {
"BBH": 0.0563723207909172,
"BNS": 0.0,
"NSBH": 0.14924961379285742,
"Terrestrial": 0.7943780654162254
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-08-12T20:16:11Z",
"superevent_id": "S230812bu",
"external_coinc": null
},
"message_text": "",
"published": "2023-08-12T20:16:12.993944Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-08-12T20:16:12.993985Z",
"modified": "2023-08-12T20:16:12.997825Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 2055,
"topic": "gcn.circular",
"uuid": "61defbfd-1ce9-4f95-abbe-9c2124d11a89",
"title": "LIGO/Virgo/KAGRA S230812aj: two counterpart neutrino candidates from IceCube neutrino searches",
"submitter": "Hop gcn.circular",
"authors": "acz2122@columbia.edu",
"data": {
"date": "23/08/14 00:29:28 GMT",
"from": "acz2122@columbia.edu",
"title": "GCN CIRCULAR",
"number": "34407",
"subject": "LIGO/Virgo/KAGRA S230812aj: two counterpart neutrino candidates 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 S230812aj in a time range of 1000 seconds\ncentered on the alert event time (2023-08-12 11:56:00 UTC to 2023-08-12 12:12:40 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\nTwo track-like events are found in spatial and temporal coincidence with the gravitational-wave\ncandidate S230812aj calculated from the map circulated by LVK as S230812aj-2-Preliminary. This\nrepresents an overall pre-trial p-value of 0.0049 for the Bayesian search.\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-----------------------------------------------------------------------------------------------------\n141.95 296.38 \t38.28 \t1.987 \t\tnot applicable \t0.0054\n-86.59 304.78 \t8.59 \t1.716 \t\tnot applicable \t0.0846\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[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.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjkxOTcyOTc0LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.CSk8iS02TV-LDw-dLXzqZ5ebQJE0YJq3RSkrD1IAzJE\n\n",
"published": "2023-08-14T00:29:42.218097Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-08-14T00:29:42.218127Z",
"modified": "2023-08-14T00:29:42.228290Z",
"nonlocalizedevents": [
{
"event_id": "S230812a"
}
],
"targets": []
},
{
"id": 2064,
"topic": "igwn.gwalert",
"uuid": "d63fd67d-a8e3-4a01-ab8d-21b3da42e382",
"title": "S230814r - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230814r/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230814r/view/"
},
"event": {
"far": 4.81025672627311e-08,
"time": "2023-08-14T06:19:20.458Z",
"group": "CBC",
"search": "AllSky",
"area_50": 973.5806284449537,
"area_90": 3752.481887739128,
"duration": null,
"pipeline": "spiir",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.0,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": true,
"skymap_hash": "fe69603f8d8fe44a2effa8f0ce4d206b",
"classification": {
"BBH": 0.9316934799569384,
"BNS": 0.0,
"NSBH": 0.0,
"Terrestrial": 0.06830652004306159
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-08-14T06:24:25Z",
"superevent_id": "S230814r",
"external_coinc": null
},
"message_text": "",
"published": "2023-08-14T06:24:26.828919Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-08-14T06:24:26.828940Z",
"modified": "2023-08-14T06:24:26.835104Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 11727,
"topic": "lvk-users.beccatest",
"uuid": "4816547e-4a42-409e-8e2b-7515a0e0036a",
"title": "Generic Message",
"submitter": "",
"authors": "",
"data": {
"ifo": [
"L1"
],
"time": [
1400628600
],
"range": 157.898253972096
},
"message_text": "",
"published": "2024-05-24T23:30:00.206138Z",
"message_parser": "",
"retracted": false,
"created": "2024-05-24T23:30:00.206161Z",
"modified": "2024-05-24T23:30:00.206172Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 11728,
"topic": "lvk-users.beccatest",
"uuid": "1265e8fe-588e-472f-9626-584661739b3e",
"title": "Generic Message",
"submitter": "",
"authors": "",
"data": {
"ifo": [
"V1"
],
"time": [
1400628600
],
"range": 53.08917096670429
},
"message_text": "",
"published": "2024-05-24T23:30:08.303023Z",
"message_parser": "",
"retracted": false,
"created": "2024-05-24T23:30:08.303036Z",
"modified": "2024-05-24T23:30:08.303040Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 2018,
"topic": "gcn.circular",
"uuid": "90010dee-8107-436b-ab44-d8aca331059b",
"title": "GRB 230812B: Tiled Swift observations",
"submitter": "Hop gcn.circular",
"authors": "Phil Evans at U of Leicester <pae9@star.le.ac.uk>",
"data": {
"date": "23/08/12 21:10:34 GMT",
"from": "Phil Evans at U of Leicester <pae9@star.le.ac.uk>",
"title": "GCN CIRCULAR",
"number": "34388",
"subject": "GRB 230812B: Tiled Swift observations"
},
"message_text": "\nP. A. Evans (U. Leicester) reports on behalf of the Swift team:\n\nSwift has initiated a series of observations, tiled on the sky, of the\nFermi/GBM GRB 230812B. Automated analysis of the XRT data will\nbe presented online at http://www.swift.ac.uk/xrt_products/TILED_GRB00115\n\nAny uncatalogued X-ray sources detected in this analysis will be\nreported on this website and via GCN COUNTERPART notices. The probability of finding\nserendipitous sources, unrelated to the Fermi/GBM event is high: any X-ray source\nconsidered to be a probable afterglow candidate will be reported via a GCN Circular\nafter manual consideration.\n\nDetails of the XRT automated analysis methods are detailed in Evans et\nal. (2007, A&A, 469, 379; 2009, MNRAS, 397, 1177 and 2014, ApJS, 210, 8).\n\nThis circular is an official product of the Swift-XRT team.\n\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjkxODc0NjQwLCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.LN-fTL7_KqesxtGMoErW5wfsQ0ZNX41D9F81svUWCCQ\n\n",
"published": "2023-08-12T21:10:45.133851Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-08-12T21:10:45.133869Z",
"modified": "2023-08-12T21:10:45.137776Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 2019,
"topic": "igwn.gwalert",
"uuid": "e0023c2f-8cf8-49df-b962-1872ba394a3e",
"title": "S230812cd - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230812cd/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230812cd/view/"
},
"event": {
"far": 1.589819294167683e-05,
"time": "2023-08-12T21:55:38.894Z",
"group": "CBC",
"search": "AllSky",
"area_50": 861.1152799866574,
"area_90": 2639.57851418912,
"duration": null,
"pipeline": "spiir",
"properties": {
"HasNS": 1.0,
"HasMassGap": 0.5213539472443225,
"HasRemnant": 0.8569411215388991
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "c0c5f258d28cd446a0f0594d95787c46",
"classification": {
"BBH": 0.0,
"BNS": 0.10615392823807349,
"NSBH": 0.010810605143949296,
"Terrestrial": 0.8830354666179772
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-08-12T21:56:02Z",
"superevent_id": "S230812cd",
"external_coinc": null
},
"message_text": "",
"published": "2023-08-12T21:56:03.032691Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-08-12T21:56:03.032712Z",
"modified": "2023-08-12T21:56:03.036189Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 2020,
"topic": "igwn.gwalert",
"uuid": "fdef52a6-e4ac-400e-a2b0-64b0226d0188",
"title": "S230812cd - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230812cd/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230812cd/view/"
},
"event": {
"far": 1.589819294167683e-05,
"time": "2023-08-12T21:55:38.894Z",
"group": "CBC",
"search": "AllSky",
"area_50": 861.1152799866574,
"area_90": 2639.57851418912,
"duration": null,
"pipeline": "spiir",
"properties": {
"HasNS": 1.0,
"HasMassGap": 0.5213539472443225,
"HasRemnant": 0.8569411215388991
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "c0c5f258d28cd446a0f0594d95787c46",
"classification": {
"BBH": 0.0,
"BNS": 0.10615392823807349,
"NSBH": 0.010810605143949296,
"Terrestrial": 0.8830354666179772
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-08-12T22:00:36Z",
"superevent_id": "S230812cd",
"external_coinc": null
},
"message_text": "",
"published": "2023-08-12T22:00:37.747746Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-08-12T22:00:37.747768Z",
"modified": "2023-08-12T22:00:37.751120Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 2021,
"topic": "gcn.circular",
"uuid": "130f937b-db28-478c-8201-91922d03e887",
"title": "Fermi GRB 230812B: 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": "23/08/12 22:31:08 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "34389",
"subject": "Fermi GRB 230812B: 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-Tavrida robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Russia (Lomonosov MSU, SAI Crimea astronomical station) started inspect of the Fermi GRB 230812B ( Fermi GBM team, GCN 34386) errorbox 10680 sec after notice time and 10713 sec after trigger time at 2023-08-12 21:56:45 UT, with upper limit up to 19.3 mag. The observations began at zenith distance = 50 deg. The sun altitude is -31.0 deg.\n\nThe galactic latitude b = 41 deg., longitude l = 72 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/observ.php?id\"53499\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 10804 | 2023-08-12 21:56:45 | MASTER-Tavrida | (16h 41m 41.24s , +46d 23m 36.1s) | C | 180 | 19.3 |\n 10992 | 2023-08-12 21:59:54 | MASTER-Tavrida | (16h 41m 46.04s , +46d 22m 29.1s) | C | 180 | 19.1 |\n 11111 | 2023-08-12 22:03:07 | MASTER-Tavrida | (16h 41m 40.73s , +46d 21m 24.6s) | C | 30 | 17.8 |\n 11151 | 2023-08-12 22:03:47 | MASTER-Tavrida | (16h 41m 47.62s , +46d 21m 41.9s) | C | 30 | 17.8 |\n 11189 | 2023-08-12 22:04:25 | MASTER-Tavrida | (16h 41m 44.53s , +46d 23m 10.6s) | C | 30 | 17.9 |\n 11227 | 2023-08-12 22:05:04 | MASTER-Tavrida | (16h 41m 44.48s , +46d 21m 32.8s) | C | 30 | 17.8 |\n 11267 | 2023-08-12 22:05:43 | MASTER-Tavrida | (16h 41m 47.52s , +46d 22m 59.5s) | C | 30 | 17.8 |\n 11304 | 2023-08-12 22:06:21 | MASTER-Tavrida | (16h 41m 40.68s , +46d 22m 18.0s) | C | 30 | 17.8 |\n 11343 | 2023-08-12 22:06:59 | MASTER-Tavrida | (16h 41m 41.50s , +46d 23m 16.6s) | C | 30 | 18.0 |\n 11381 | 2023-08-12 22:07:38 | MASTER-Tavrida | (16h 41m 47.28s , +46d 22m 15.3s) | C | 30 | 17.8 |\n 11495 | 2023-08-12 22:08:17 | MASTER-Tavrida | (16h 39m 42.09s , +46d 39m 09.7s) | C | 180 | 19.0 |\n 11683 | 2023-08-12 22:11:25 | MASTER-Tavrida | (16h 39m 49.58s , +46d 39m 04.4s) | C | 180 | 19.0 |\n 11874 | 2023-08-12 22:14:36 | MASTER-Tavrida | (16h 41m 28.89s , +45d 40m 34.6s) | C | 180 | 19.0 |\n 12063 | 2023-08-12 22:17:44 | MASTER-Tavrida | (16h 41m 29.14s , +45d 39m 21.9s) | C | 180 | 19.0 |\n 12251 | 2023-08-12 22:20:53 | MASTER-Tavrida | (16h 41m 31.63s , +45d 40m 21.9s) | C | 180 | 19.0 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjkxODc5NDczLCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.HVQql4E5GDoa-bmCaSo-oO6UAMC_qgCKBmuzs1wfPUs\n\n",
"published": "2023-08-12T22:31:19.452281Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-08-12T22:31:19.452299Z",
"modified": "2023-08-12T22:31:19.455856Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 2022,
"topic": "gcn.circular",
"uuid": "465918a2-1ac1-46d8-b3e9-e3c9885bb322",
"title": "LAT GRB230812.79: 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": "23/08/13 01:00:33 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "34390",
"subject": "LAT GRB230812.79: 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-Tavrida robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Russia (Lomonosov MSU, SAI Crimea astronomical station) was pointed to the LAT GRB230812.79 (trigger No 230812790,16h 35m 45.60s , +47d 56m 42.0s, R=0.172833) errorbox 10713 sec after trigger time at 2023-08-12 21:56:45 UT, with upper limit up to 19.3 mag. The observations began at zenith distance = 50 deg. The sun altitude is -31.0 deg.\n\nMASTER-OAFA robotic telescope located in Argentina (OAFA observatory of San Juan National University) was pointed to the LAT GRB230812.79 errorbox 15682 sec after trigger time at 2023-08-12 23:19:34 UT, with upper limit up to 18.2 mag. Observations started at twilight. The observations began at zenith distance = 78 deg. The sun altitude is -16.0 deg.\n\nThe galactic latitude b = 42 deg., longitude l = 74 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/observ.php?id\"53603\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 10804 | 2023-08-12 21:56:45 | MASTER-Tavrida | (16h 41m 41.24s , +46d 23m 36.1s) | C | 180 | 19.3 |\n 10992 | 2023-08-12 21:59:54 | MASTER-Tavrida | (16h 41m 46.04s , +46d 22m 29.1s) | C | 180 | 19.1 |\n 11111 | 2023-08-12 22:03:07 | MASTER-Tavrida | (16h 41m 40.73s , +46d 21m 24.6s) | C | 30 | 17.8 |\n 11151 | 2023-08-12 22:03:47 | MASTER-Tavrida | (16h 41m 47.62s , +46d 21m 41.9s) | C | 30 | 17.8 |\n 11189 | 2023-08-12 22:04:25 | MASTER-Tavrida | (16h 41m 44.53s , +46d 23m 10.6s) | C | 30 | 17.9 |\n 11227 | 2023-08-12 22:05:04 | MASTER-Tavrida | (16h 41m 44.48s , +46d 21m 32.8s) | C | 30 | 17.8 |\n 11267 | 2023-08-12 22:05:43 | MASTER-Tavrida | (16h 41m 47.52s , +46d 22m 59.5s) | C | 30 | 17.8 |\n 11304 | 2023-08-12 22:06:21 | MASTER-Tavrida | (16h 41m 40.68s , +46d 22m 18.0s) | C | 30 | 17.8 |\n 11343 | 2023-08-12 22:06:59 | MASTER-Tavrida | (16h 41m 41.50s , +46d 23m 16.6s) | C | 30 | 18.0 |\n 11381 | 2023-08-12 22:07:38 | MASTER-Tavrida | (16h 41m 47.28s , +46d 22m 15.3s) | C | 30 | 17.8 |\n 11495 | 2023-08-12 22:08:17 | MASTER-Tavrida | (16h 39m 42.09s , +46d 39m 09.7s) | C | 180 | 19.0 |\n 11683 | 2023-08-12 22:11:25 | MASTER-Tavrida | (16h 39m 49.58s , +46d 39m 04.4s) | C | 180 | 19.0 |\n 12443 | 2023-08-12 22:24:04 | MASTER-Tavrida | (16h 42m 43.40s , +47d 09m 33.2s) | C | 180 | 19.2 |\n 12630 | 2023-08-12 22:27:11 | MASTER-Tavrida | (16h 42m 43.44s , +47d 10m 26.3s) | C | 180 | 19.0 |\n 12822 | 2023-08-12 22:30:24 | MASTER-Tavrida | (16h 37m 35.03s , +46d 09m 23.7s) | C | 180 | 18.7 |\n 13010 | 2023-08-12 22:33:32 | MASTER-Tavrida | (16h 37m 29.92s , +46d 08m 17.3s) | C | 180 | 18.6 |\n 13202 | 2023-08-12 22:36:44 | MASTER-Tavrida | (16h 29m 37.44s , +46d 08m 30.0s) | C | 180 | 18.7 |\n 13389 | 2023-08-12 22:39:51 | MASTER-Tavrida | (16h 29m 33.96s , +46d 09m 50.2s) | C | 180 | 18.7 |\n 13961 | 2023-08-12 22:49:23 | MASTER-Tavrida | (16h 29m 36.75s , +47d 38m 29.9s) | C | 180 | 18.7 |\n 14149 | 2023-08-12 22:52:30 | MASTER-Tavrida | (16h 29m 37.60s , +47d 39m 23.6s) | C | 180 | 18.6 |\n 15563 | 2023-08-12 23:16:04 | MASTER-Tavrida | (16h 41m 55.05s , +46d 19m 46.5s) | C | 180 | 18.3 |\n 15750 | 2023-08-12 23:19:12 | MASTER-Tavrida | (16h 41m 50.04s , +46d 18m 40.4s) | C | 180 | 18.3 |\n 15712 | 2023-08-12 23:19:34 | MASTER-OAFA | (16h 32m 37.39s , +46d 49m 30.8s) | C | 60 | 17.3 |\n 15823 | 2023-08-12 23:21:25 | MASTER-OAFA | (16h 44m 16.19s , +46d 50m 30.3s) | C | 60 | 17.4 |\n 16022 | 2023-08-12 23:24:44 | MASTER-Tavrida | (16h 45m 47.32s , +48d 24m 35.8s) | C | 60 | 18.3 |\n 16093 | 2023-08-12 23:25:54 | MASTER-Tavrida | (16h 45m 51.22s , +48d 25m 57.5s) | C | 60 | 18.3 |\n 16165 | 2023-08-12 23:27:06 | MASTER-Tavrida | (16h 37m 46.75s , +48d 25m 03.8s) | C | 60 | 18.1 |\n 16234 | 2023-08-12 23:28:15 | MASTER-Tavrida | (16h 37m 47.03s , +48d 26m 00.9s) | C | 60 | 18.1 |\n 16305 | 2023-08-12 23:29:26 | MASTER-Tavrida | (16h 37m 47.02s , +47d 07m 12.8s) | C | 60 | 17.7 |\n 16375 | 2023-08-12 23:30:36 | MASTER-Tavrida | (16h 37m 41.37s , +47d 06m 10.6s) | C | 60 | 17.7 |\n 16507 | 2023-08-12 23:31:48 | MASTER-Tavrida | (16h 41m 57.87s , +46d 18m 31.8s) | C | 180 | 18.3 |\n 16639 | 2023-08-12 23:35:00 | MASTER-Tavrida | (16h 33m 49.28s , +48d 07m 40.9s) | C | 60 | 17.9 |\n 16708 | 2023-08-12 23:36:10 | MASTER-Tavrida | (16h 33m 49.34s , +48d 05m 48.0s) | C | 60 | 17.9 |\n 16792 | 2023-08-12 23:37:34 | MASTER-OAFA | (16h 32m 29.87s , +46d 50m 00.3s) | C | 60 | 17.4 |\n 16903 | 2023-08-12 23:39:25 | MASTER-OAFA | (16h 44m 13.26s , +46d 50m 40.8s) | C | 60 | 17.5 |\n 17581 | 2023-08-12 23:50:43 | MASTER-Tavrida | (16h 41m 57.02s , +48d 54m 55.2s) | C | 60 | 17.9 |\n 17652 | 2023-08-12 23:51:54 | MASTER-Tavrida | (16h 41m 51.05s , +48d 54m 01.4s) | C | 60 | 17.8 |\n 18078 | 2023-08-12 23:58:59 | MASTER-OAFA | (16h 31m 15.33s , +49d 01m 01.6s) | C | 60 | 17.2 |\n 18292 | 2023-08-13 00:01:33 | MASTER-Tavrida | (16h 41m 50.91s , +48d 05m 48.1s) | C | 180 | 18.1 |\n 18411 | 2023-08-13 00:04:33 | MASTER-OAFA | (16h 32m 35.81s , +46d 50m 46.2s) | C | 60 | 17.5 |\n 18479 | 2023-08-13 00:04:41 | MASTER-Tavrida | (16h 41m 51.27s , +48d 06m 41.4s) | C | 180 | 18.2 |\n 18523 | 2023-08-13 00:06:24 | MASTER-OAFA | (16h 44m 10.88s , +46d 49m 31.0s) | C | 60 | 17.8 |\n 18671 | 2023-08-13 00:07:52 | MASTER-Tavrida | (16h 33m 50.96s , +46d 35m 56.8s) | C | 180 | 17.6 |\n 18694 | 2023-08-13 00:08:16 | MASTER-OAFA | (16h 39m 21.33s , +46d 14m 36.3s) | C | 180 | 18.2 |\n 18859 | 2023-08-13 00:11:00 | MASTER-Tavrida | (16h 33m 45.72s , +46d 34m 51.4s) | C | 180 | 17.7 |\n 19496 | 2023-08-13 00:22:38 | MASTER-Tavrida | (16h 25m 59.99s , +47d 36m 01.5s) | C | 60 | 17.6 |\n 19564 | 2023-08-13 00:23:45 | MASTER-Tavrida | (16h 25m 55.13s , +47d 35m 16.9s) | C | 60 | 17.6 |\n 20964 | 2023-08-13 00:46:06 | MASTER-OAFA | (16h 34m 57.91s , +47d 57m 55.1s) | C | 180 | 18.1 |\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.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjkxODg4NDM5LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.3OVC_HGJ6Er114tmJS-a5haMb33EecR-REyxLS_dFs8\n\n",
"published": "2023-08-13T01:00:46.820159Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-08-13T01:00:46.820177Z",
"modified": "2023-08-13T01:00:46.824177Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 2551,
"topic": "igwn.gwalert",
"uuid": "5827d0a3-2fe6-470c-8e8d-292ac05566d8",
"title": "S230828o - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230828o/files/cwb.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230828o/view/"
},
"event": {
"far": 1.09883e-05,
"time": "2023-08-28T06:35:07.660Z",
"group": "Burst",
"search": "BBH",
"area_50": 812.4362485644098,
"area_90": 2509.487999181389,
"duration": 0.004753,
"pipeline": "CWB",
"properties": {},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "a0005f32effea0d673363c8dae23fa42",
"classification": {},
"skymap_version": 0,
"central_frequency": 169.203461
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-08-28T06:40:54Z",
"superevent_id": "S230828o",
"external_coinc": null
},
"message_text": "",
"published": "2023-08-28T06:40:55.764207Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-08-28T06:40:55.764227Z",
"modified": "2023-08-28T06:40:55.767964Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 2065,
"topic": "igwn.gwalert",
"uuid": "e5f3fecc-afb4-445b-87c2-36bf9f726e73",
"title": "S230814r - INITIAL",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230814r/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230814r/view/"
},
"event": {
"far": 4.81025672627311e-08,
"time": "2023-08-14T06:19:20.458Z",
"group": "CBC",
"search": "AllSky",
"area_50": 973.5806284449537,
"area_90": 3752.481887739128,
"duration": null,
"pipeline": "spiir",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.0,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": true,
"skymap_hash": "fe69603f8d8fe44a2effa8f0ce4d206b",
"classification": {
"BBH": 0.9316934799569384,
"BNS": 0.0,
"NSBH": 0.0,
"Terrestrial": 0.06830652004306159
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "INITIAL",
"sequence_num": 3,
"time_created": "2023-08-14T07:19:33Z",
"superevent_id": "S230814r",
"external_coinc": null
},
"message_text": "",
"published": "2023-08-14T07:19:34.643840Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-08-14T07:19:34.643871Z",
"modified": "2023-08-14T07:19:34.652612Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 2066,
"topic": "gcn.circular",
"uuid": "e0498431-40f9-440c-acc7-ec5c8a00ac7b",
"title": "LIGO/Virgo/KAGRA S230814r: Identification of a GW compact binary merger candidate",
"submitter": "Hop gcn.circular",
"authors": "U. Deka at International Centre for Theoretical Sciences <uddeepta.deka@ligo.org>",
"data": {
"date": "23/08/14 07:49:50 GMT",
"from": "U. Deka at International Centre for Theoretical Sciences <uddeepta.deka@ligo.org>",
"title": "GCN CIRCULAR",
"number": "34411",
"subject": "LIGO/Virgo/KAGRA S230814r: Identification of a GW compact binary merger candidate"
},
"message_text": "The LIGO Scientific Collaboration, the Virgo Collaboration, and the\nKAGRA Collaboration report:\n\nWe identified the compact binary merger candidate S230814r during\nreal-time processing of data from LIGO Hanford Observatory (H1) and\nLIGO Livingston Observatory (L1) at 2023-08-14 06:19:20.458 UTC (GPS\ntime: 1376029178.458). The candidate was found by the CWB [1], GstLAL\n[2], oLIB [3], PyCBC Live [4], and SPIIR [5] analysis pipelines.\n\nS230814r is an event of interest because its false alarm rate, as\nestimated by the online analysis, is 4.8e-08 Hz, or about one in 7\nmonths. The event's properties can be found at this URL:\n\nhttps://gracedb.ligo.org/superevents/S230814r\n\nThe classification of the GW signal, in order of descending\nprobability, is BBH (93%), Terrestrial (7%), BNS (<1%), or NSBH (<1%).\n\nAssuming the candidate is astrophysical in origin, the probability\nthat the lighter compact object is consistent with a neutron star mass\n(HasNS) is <1%. [6] Using the masses and spins inferred from the\nsignal, the probability of matter outside the final compact object\n(HasRemnant) is <1%. [6] Both HasNS and HasRemnant consider the\nsupport of several neutron star equations of state. The probability\nthat either of the binary components lies between 3 and 5 solar masses\n(HasMassGap) is <1%.\n\nTwo sky maps are available at this time and can be retrieved from the\nGraceDB event page:\n * bayestar.multiorder.fits,1, an initial localization generated by\nBAYESTAR [7], distributed via GCN notice about 26 seconds after the\ncandidate event time.\n * bayestar.multiorder.fits,2, an initial localization generated by\nBAYESTAR [7], distributed via GCN notice about 5 minutes after the\ncandidate event time.\n\nThe preferred sky map at this time is bayestar.multiorder.fits,2. For\nthe bayestar.multiorder.fits,2 sky map, the 90% credible region is\n3753 deg2. Marginalized over the whole sky, the a posteriori\nluminosity distance estimate is 5634 +/- 2023 Mpc (a posteriori mean\n+/- standard deviation).\n\nFor further information about analysis methodology and the contents of\nthis alert, refer to the LIGO/Virgo/KAGRA Public Alerts User Guide\nhttps://emfollow.docs.ligo.org/userguide/.\n\n [1] Klimenko et al. PRD 93, 042004 (2016)\n [2] Tsukada et al. arXiv:2305.06286 (2023) and Ewing et al.\narXiv:2305.05625 (2023)\n [3] Lynch et al. PRD 95, 104046 (2017)\n [4] Dal Canton et al. ApJ 923, 254 (2021)\n [5] Chu et al. PRD 105, 024023 (2022)\n [6] Chatterjee et al. ApJ 896, 54 (2020)\n [7] Singer & Price PRD 93, 024013 (2016)\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjkxOTk5Mzk1LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.-E3E4rVcMY57Et9tJu5M3HMf_-miA07w6da6p8oiSCQ\n\n",
"published": "2023-08-14T07:50:04.211812Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-08-14T07:50:04.211832Z",
"modified": "2023-08-14T07:50:04.218279Z",
"nonlocalizedevents": [
{
"event_id": "S230814r"
}
],
"targets": []
},
{
"id": 2123,
"topic": "hermes.message",
"uuid": "d7864d97-c47e-480a-9fa1-432e1452a5e4",
"title": "INTEGRAL follow-up of S230816t",
"submitter": "Volodymyr Savchenko",
"authors": "",
"data": {},
"message_text": "INTEGRAL follow-up of S230816t at 2023-08-16T08:54:40.000\n\n\nSPI-ACS excesses:\nat T0+43.94 FAP = 0.143\nat T0+-66.43 FAP = 0.35\nat T0+8.82 FAP = 0.513\nat T0+-21.08 FAP = 0.577\nat T0+153.54 FAP = 0.923\nat T0+141.62 FAP = 0.924\n\n\n\n\nnext break in data in 50 hr: 2023-08-18T11:16:02, for about 9 hr",
"published": "2023-08-16T09:12:48.661956Z",
"message_parser": "Hermes Message Parser v2",
"retracted": false,
"created": "2023-08-16T09:12:48.661973Z",
"modified": "2023-08-16T09:12:48.666131Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 2023,
"topic": "igwn.gwalert",
"uuid": "d8dcc154-3c32-485a-bc5f-c0fb360bb71c",
"title": "S230813e - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230813e/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230813e/view/"
},
"event": {
"far": 3.9226306398632e-06,
"time": "2023-08-13T01:15:51.277Z",
"group": "CBC",
"search": "AllSky",
"area_50": 2169.5740728708665,
"area_90": 9400.08882636507,
"duration": null,
"pipeline": "spiir",
"properties": {
"HasNS": 0.18392645216860917,
"HasMassGap": 0.04963932461873639,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "76e49e76d770914e3ccd319c6f0081ba",
"classification": {
"BBH": 0.2103944181711055,
"BNS": 0.0,
"NSBH": 0.05386818131358252,
"Terrestrial": 0.735737400515312
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-08-13T01:16:15Z",
"superevent_id": "S230813e",
"external_coinc": null
},
"message_text": "",
"published": "2023-08-13T01:16:17.153839Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-08-13T01:16:17.153859Z",
"modified": "2023-08-13T01:16:17.157152Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 2024,
"topic": "igwn.gwalert",
"uuid": "c26db614-b9be-450a-82b3-0da29037ef97",
"title": "S230813e - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230813e/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230813e/view/"
},
"event": {
"far": 3.9226306398632e-06,
"time": "2023-08-13T01:15:51.277Z",
"group": "CBC",
"search": "AllSky",
"area_50": 2169.5740728708665,
"area_90": 9400.08882636507,
"duration": null,
"pipeline": "spiir",
"properties": {
"HasNS": 0.18392645216860917,
"HasMassGap": 0.04963932461873639,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "76e49e76d770914e3ccd319c6f0081ba",
"classification": {
"BBH": 0.2103944181711055,
"BNS": 0.0,
"NSBH": 0.05386818131358252,
"Terrestrial": 0.735737400515312
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-08-13T01:20:50Z",
"superevent_id": "S230813e",
"external_coinc": null
},
"message_text": "",
"published": "2023-08-13T01:20:51.951311Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-08-13T01:20:51.951342Z",
"modified": "2023-08-13T01:20:51.955299Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 2025,
"topic": "gcn.circular",
"uuid": "7071cbe0-b343-42c2-84c4-f0ef3d501dbc",
"title": "GRB 230812B: Fermi GBM Observation of a very bright burst",
"submitter": "Hop gcn.circular",
"authors": "Oliver J Roberts at USRA/NASA <oliver.roberts@nasa.gov>",
"data": {
"date": "23/08/13 01:41:45 GMT",
"from": "Oliver J Roberts at USRA/NASA <oliver.roberts@nasa.gov>",
"title": "GCN CIRCULAR",
"number": "34391",
"subject": "GRB 230812B: Fermi GBM Observation of a very bright burst"
},
"message_text": "O.J. Roberts (USRA), C. Meegan (UAH), S. Lesage (UAH), E. Burns (LSU), and S. Dalessi (UAH)\nreport on behalf of the Fermi GBM Team:\n\n\"At 18:58:12.05 UT on 12 August 2023, the Fermi Gamma-Ray Burst Monitor (GBM)\ntriggered and located GRB 230812B (trigger 713559497 / 230812790). The Fermi\nGBM Final Real-time Localization was previously reported (GBM team 2023, GCN 34386).\n\nThe angle from the Fermi LAT boresight at the GBM trigger time is 29 degrees.\n\nThe GBM light curve consists of a FRED-like burst with a duration (T90)\nof about 3 s (10-1000 keV). The time-averaged spectrum over the whole burst\nfrom T0-1s to T0+32 s is best fit by a Band function with Epeak = 273 +/- 3 keV,\nalpha of -0.80 +/- 0.01 and beta of -2.47 +/-0.02.\n\nThe event fluence (10-1000 keV) in this time interval is\n(2.5201 +/- 0.0002)E-04 erg/cm^2. The 1s peak photon flux measured\nstarting from T0+0.6 s in the 10-1000 keV band is 740 +/- 2 ph/s/cm^2.\n\nDue to a timing glitch in the middle of the burst in the TTE data, this data\ntype had to be reprocessed and consequently, this preliminary report used the\nCSPEC and CTIME data types only, which were unaffected. We note that due\nto the intensity of the burst, pulse pile-up during the burst is highly likely.\nThis analysis is ongoing.\n\nThe spectral analysis results presented above are preliminary;\nfinal results will be published in the GBM GRB Catalog:\nhttps://heasarc.gsfc.nasa.gov/W3Browse/fermi/fermigbrst.html\n\nFor Fermi GBM data and info, please visit the official Fermi GBM Support Page:\nhttps://fermi.gsfc.nasa.gov/ssc/data/access/gbm/\"\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjkxODkwOTEwLCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.djzy50Au9jsoEKGrEvJok62Ke-uMe3tWSP-UtQuTAZY\n\n",
"published": "2023-08-13T01:41:56.071360Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-08-13T01:41:56.071377Z",
"modified": "2023-08-13T01:41:56.074975Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 2026,
"topic": "gcn.circular",
"uuid": "f131d333-638e-40c2-85a4-63dc873f84dd",
"title": "GRB 230812B: Fermi-LAT detection",
"submitter": "Hop gcn.circular",
"authors": "Lorenzo Scotton at UAH <lscottongcn@outlook.com>",
"data": {
"date": "23/08/13 02:50:20 GMT",
"from": "Lorenzo Scotton at UAH <lscottongcn@outlook.com>",
"title": "GCN CIRCULAR",
"number": "34392",
"subject": "GRB 230812B: Fermi-LAT detection"
},
"message_text": "L. Scotton (UAH), D. Kocevski (NASA/MSFC), J. Racusin (NASA/GSFC), and N. Omodei (Stanford University)\nreport on behalf of the Fermi-LAT Collaboration:\n\nOn August 12, 2023, Fermi-LAT detected high-energy emission from\nGRB 230812B, which was also detected by Fermi-GBM (trigger 713559497/230812790, S. Lesage GCN 34387, O. Roberts GCN 34391).\n\nThe best LAT on-ground location is found to be\n\nRA, Dec = 249.10, 47.75 (degrees, J2000)\n\nwith an error radius of 0.13 deg (90% containment, statistical error only).\nThis was 29 deg from the LAT boresight at the time of the GBM trigger:\n\nT0 = 18:58:12.05 UT.\n\nThe data from the Fermi-LAT show a significant increase\nin the event rate after the GBM trigger that is spatially correlated with the\nGBM emission (1.69 degrees from the GBM location) with high significance.\nThe photon flux above 100 MeV in the time interval 0-50 s after the\nGBM trigger is (1.96 +/- 0.27)E-4 ph/cm2/s.\n\nThe estimated photon index above 100 MeV is -2.16 +/- 0.14.\n\nThe highest-energy photon is a 72 GeV event which is observed 32.2 seconds\nafter the GBM trigger.\n\nThe Fermi-LAT point of contact for this burst is\nLorenzo Scotton (lorenzo.scotton AT uah.edu).\n\nThe Fermi-LAT is a pair conversion telescope designed to cover\nthe energy band from 20 MeV to greater than 300 GeV.\nIt is the product of an international collaboration between\nNASA and DOE in the U.S. and many scientific institutions\nacross France, Italy, Japan and Sweden.\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjkxODk1MDI1LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.5BVbIiCZnsr6oOU8PisGJuDC24xHifOgkzSSyA7aUFk\n\n",
"published": "2023-08-13T02:50:30.697644Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-08-13T02:50:30.697682Z",
"modified": "2023-08-13T02:50:30.702181Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 2552,
"topic": "gcn.circular",
"uuid": "26005c19-8b41-472e-b14c-9303713dbb12",
"title": "Subject: GRB230826A: Swift/UVOT upper limits",
"submitter": "Hop gcn.circular",
"authors": "Alice Breeveld at MSSL-UCL <a.breeveld@ucl.ac.uk>",
"data": {
"date": "23/08/28 10:21:42 GMT",
"from": "Alice Breeveld at MSSL-UCL <a.breeveld@ucl.ac.uk>",
"title": "GCN CIRCULAR",
"number": "34582",
"subject": "Subject: GRB230826A: Swift/UVOT upper limits"
},
"message_text": "A. A. Breeveld (UCL-MSSL) and R. A. J. Eyles-Ferris (U Leicester) report on behalf of the Swift/UVOT team:\n\nThe Swift/UVOT began settled observations of the field of GRB 230826A 114 s after the BAT trigger (Eyles-Ferris et al., GCN Circ. 34565).\nNo optical afterglow consistent with the enhanced XRT position (Osborne et al., GCN Circ. 34569) is detected in the initial UVOT exposures.\nPreliminary 3-sigma upper limits using the UVOT photometric system (Breeveld et al. 2011, AIP Conf. Proc. 1358, 373) for the first finding chart (FC) exposure and subsequent exposures are:\n\nFilter T_start(s) T_stop(s) Exp(s) Mag\n\nwhite_FC 114 263 147 >20.0\nwhite 606 5452 312 >20.4\nv 657 1105 58 >17.8\nb 582 5339 255 >19.6\nu 327 5134 481 >19.5\nuvw1 707 1320 71 >18.4\nuvm2 682 1303 78 >18.4\nuvw2 632 1254 78 >18.6\n\nThe magnitudes in the table are not corrected for the Galactic extinction due to the reddening of E(B-V) = 0.243 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.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjkzMjE4MTA3LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.l3zkRJLcfJz2aZRFbP8kMCHQm-Gw1siOnqpJebkw3BU\n\n",
"published": "2023-08-28T10:21:57.369489Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-08-28T10:21:57.369509Z",
"modified": "2023-08-28T10:21:57.375188Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 9144,
"topic": "igwn.gwalert",
"uuid": "c5bd2ece-2517-4ddb-b745-c6669194a3fc",
"title": "S240523cb - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S240523cb/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S240523cb/view/"
},
"event": {
"far": 2.045597e-05,
"time": "2024-05-23T14:13:07.827Z",
"group": "CBC",
"search": "AllSky",
"area_50": 333.0422095903562,
"area_90": 1762.5166549434507,
"duration": null,
"pipeline": "MBTA",
"properties": {
"HasNS": 1.0,
"HasMassGap": 0.20315199593612548,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1",
"V1"
],
"significant": false,
"skymap_hash": "7feb759b31dbc4f7ea208d6e9b35e879",
"classification": {
"BBH": 0.0,
"BNS": 0.000101663,
"NSBH": 0.00051756,
"Terrestrial": 0.999380777
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2024-05-23T14:13:38Z",
"superevent_id": "S240523cb",
"external_coinc": null
},
"message_text": "",
"published": "2024-05-23T14:13:40.038396Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2024-05-23T14:13:40.038421Z",
"modified": "2024-05-23T14:13:40.046071Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 9145,
"topic": "lvk-users.beccatest",
"uuid": "11f1b2f4-3f48-4f57-8961-13f9b6d7eb87",
"title": "Generic Message",
"submitter": "",
"authors": "",
"data": {
"ifo": [
"H1"
],
"time": [
1400508900
],
"range": 148.45164597880287
},
"message_text": "",
"published": "2024-05-23T14:14:59.376674Z",
"message_parser": "",
"retracted": false,
"created": "2024-05-23T14:14:59.376695Z",
"modified": "2024-05-23T14:14:59.376703Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 9146,
"topic": "lvk-users.beccatest",
"uuid": "48262ec1-9495-4f22-bbc7-3c8785de4f36",
"title": "Generic Message",
"submitter": "",
"authors": "",
"data": {
"ifo": [
"L1"
],
"time": [
1400508900
],
"range": 166.7793162450699
},
"message_text": "",
"published": "2024-05-23T14:15:00.391043Z",
"message_parser": "",
"retracted": false,
"created": "2024-05-23T14:15:00.391062Z",
"modified": "2024-05-23T14:15:00.391070Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 2027,
"topic": "gcn.circular",
"uuid": "98f4ff5f-5d38-4fab-a39a-170a6440abf4",
"title": "GRB 230812B: Preliminary Swift/XRT localization",
"submitter": "Hop gcn.circular",
"authors": "Jamie Kennea at Penn State U <jak51@psu.edu>",
"data": {
"date": "23/08/13 04:03:06 GMT",
"from": "Jamie Kennea at Penn State U <jak51@psu.edu>",
"title": "GCN CIRCULAR",
"number": "34393",
"subject": "GRB 230812B: Preliminary Swift/XRT localization"
},
"message_text": "J. A. Kennea (PSU) on behalf ot the Swift team,\n\nIn a target-of-opportunity observation taken starting 02:00UT on \nAugust 13th, 2023, pointed at the LAT position (GCN 34392) of \nGRB 230812B (GCN 34391), we find a previously uncatalogued X-ray\npoint source in preliminary data from Swiftâs X-ray Telescope.\n\nThe preliminary position is RA/Dec (J2000) = 249.13957, 47.854760,\nwhich is equivalent:\n\nRA(J2000) = 16h 36m, 33.4s,\nDec(J2000) = +47d 51m 17.1s,\n\nwith an estimate error of 10 arcseconds radius. Please note this position\nis based upon preliminary data, reported rapidly to aide follow-up. An\nupdated position will be reported via GCN ASAP.\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjkxODk5MzkyLCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.rK2rle_qvqux91qLC_BfwMnrrb3W0u96gV0jeQzk1Qo\n\n",
"published": "2023-08-13T04:03:23.858430Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-08-13T04:03:23.858447Z",
"modified": "2023-08-13T04:03:23.863508Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 2028,
"topic": "gcn.circular",
"uuid": "5775ee06-191a-46a3-b69b-5851afdc4d56",
"title": "GRB 230812B: Improved Swift/XRT localization",
"submitter": "Hop gcn.circular",
"authors": "K.L. Page at U Leicester <klp5@leicester.ac.uk>",
"data": {
"date": "23/08/13 05:19:38 GMT",
"from": "K.L. Page at U Leicester <klp5@leicester.ac.uk>",
"title": "GCN CIRCULAR",
"number": "34394",
"subject": "GRB 230812B: Improved Swift/XRT localization"
},
"message_text": "K.L. Page (U. Leicester) reports on behalf of the Swift-XRT team:\n\nWe have analysed 1.8 ks of XRT data for GRB 230812B, starting 25.4 ks\nafter the Fermi trigger (GCN 34391, 34392). The data are entirely in\nPhoton Counting (PC) mode. The currently best available XRT position is\nRA, Dec = 249.1323, 47.8574, which is equivalent to:\n\nRA (J2000): 16 36 31.76\nDec(J2000): +47 51 26.7\n\nwith an uncertainty of 3.7 arcsec (radius, 90% confidence).\n\nWe note that this is 20 arcsec from the preliminary position given in GCN\n34393.\n\nA detailed refined analysis circular will be sent when more data are\navailable.\n\nThis circular is an official product of the Swift-XRT team.\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjkxOTAzOTgzLCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.puvyTNavfapA0eGZphFzKbCi0W3XwB33mEo8erZAZ6I\n\n",
"published": "2023-08-13T05:19:50.202816Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-08-13T05:19:50.202834Z",
"modified": "2023-08-13T05:19:50.206551Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 2553,
"topic": "gcn.circular",
"uuid": "f70296e2-306a-43b5-905e-0d1bbbb8fb93",
"title": "GRB 230827A: GRBAlpha detection",
"submitter": "Hop gcn.circular",
"authors": "Marianna DafÄÃková at Masaryk University <500025@mail.muni.cz>",
"data": {
"date": "23/08/28 10:46:50 GMT",
"from": "Marianna DafÄÃková at Masaryk University <500025@mail.muni.cz>",
"title": "GCN CIRCULAR",
"number": "34583",
"subject": "GRB 230827A: GRBAlpha detection"
},
"message_text": "M. Dafcikova, J. Ripa (Masaryk U.), A. Pal (Konkoly Observatory), N. Werner (Masaryk U.), M. Ohno, H. Takahashi (Hiroshima U.), L. Meszaros, B. Csak (Konkoly Observatory), N. Husarikova, F. Munz , M. Topinka, M. Kolar, J.-P. Breuer, F. Hroch (Masaryk U.), T. Urbanec, M. Kasal, A. Povalac (Brno U. of Technology), J. Hudec, J. Kapus, M. Frajt (Spacemanic s.r.o), R. Laszlo, M. Koleda (Needronix s.r.o), M. Smelko, P. Hanak, P. Lipovsky (Technical U. of Kosice), G. Galgoczi (Wigner Research Center/Eotvos U.), Y. Uchida, H. Poon, H. Matake (Hiroshima U.), N. Uchida (ISAS/JAXA), T. Bozoki (Eotvos U.), G. Dalya (Eotvos U.), yyT. Enoto (Kyoto U.), Zs. Frei (Eotvos U.), G. Friss (Eotvos U.), Y. Fukazawa, K. Hirose (Hiroshima U.), S. Hisadomi (Nagoya U.), Y. Ichinohe (Rikkyo U.), K. Kapas (Eotvos U.), L. L. Kiss (Konkoly Observatory), T. Mizuno (Hiroshima U.), K. Nakazawa (Nagoya U.), H. Odaka (Univ of Tokyo), J. Takatsy (Eotvos U.), K. Torigoe (Hiroshima U.), N. Kogiso, M. Yoneyama (Osaka Metropolitan U.), M. Moritaki (U. Tokyo), T. Kano (U. Michigan) -- the GRBAlpha collaboration.\n\nThe long-duration GRB 230827A (Fermi/GBM detection: GCN 34575, INTEGRAL/SPI-ACS detection at 2023-08-27 ~18:17:53 UT) was observed by the GRBAlpha 1U CubeSat (Pal et al. 2023; arXiv:2302.10048).\n\nThe detection was confirmed at the peak time 2023-08-27 18:18:14 UTC. The T90 duration measured by GRBAlpha is 73 s and the overall significance during T90 reaches 30 sigma.\n\nThe light curve obtained by GRBAlpha is available here: \nhttps://grbalpha.konkoly.hu/static/share/GRB230827A_GCN.pdf\n\nAll GRBAlpha detections are listed at: https://monoceros.physics.muni.cz/hea/GRBAlpha/ \nGRBAlpha, launched on 2021 March 22, is a demonstration mission for a future CubeSat constellation (Werner et al. Proc. SPIE 2018). The detector of GRBAlpha consists of a 75 x 75 x 5 mm3 CsI scintillator read out by a SiPM array, covering the energy range from ~50 keV to ~1000 keV. To increase the duty cycle and the downlink rate, the upgrade of the on-board data acquisition software stack is in progress. The ground segment is also supported by the radio amateur community and it takes advantage of the SatNOGS network for increased data downlink volume. \n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjkzMjE5NjE1LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.1l-UIQcDvuyMzUm0PFEAVFl9nemLaq1QCg_l3vGOHyE\n\n",
"published": "2023-08-28T10:47:00.991758Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-08-28T10:47:00.991777Z",
"modified": "2023-08-28T10:47:00.998194Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 2075,
"topic": "gcn.circular",
"uuid": "b9cc46ec-3b7e-49b0-a4f4-99226e45e2e0",
"title": "GRB 230812B: GIT optical follow-up",
"submitter": "Hop gcn.circular",
"authors": "Vishwajeet Swain at IIT Bombay <vishwajeet.s@iitb.ac.in>",
"data": {
"date": "23/08/14 18:22:14 GMT",
"from": "Vishwajeet Swain at IIT Bombay <vishwajeet.s@iitb.ac.in>",
"title": "GCN CIRCULAR",
"number": "34420",
"subject": "GRB 230812B: GIT optical follow-up"
},
"message_text": "R. Kumar (IITB), A. Salgundi (IITB), V. Swain (IITB), H. Kumar (IITB), V. Bhalerao (IITB), G.C. Anupama (IIA), S. Barway (IIA) and K. Angail (IAO) report on behalf of the GIT team:\n\nWe observed the field of the GRB230812B (Fermi GBM Team, GCN 34386) with 0.7m GROWTH-India Telescope (GIT). We started the observation from 14:46:44 UT on 2023-08-13, roughly 20 hours after the Fermi trigger. We obtained multiple frames of 300 sec each in the g' and r' bands. We detected the afterglow in our stacked images at the enhanced Swift XRT localization (Beardmore et al. GCN 34400). The details of the photometry are given in the below table:\n\n----------------------------------------------------------------------\n\nJD (mid) | t-t0 (days)| Filter | Exposure (s) | Magnitude (AB) |\n\n----------------------------------------------------------------------\n\n2460170.139773 | 0.85 | g' | 5 x 300 | 20.34 +/- 0.06 |\n2460170.121745 | 0.83 | r' | 4 x 300 | 19.98 +/- 0.05 |\n\n\n----------------------------------------------------------------------\n\nOur photometry values are consistent with the results submitted by other optical telescopes (Zheng & Filippenko, GCN 34395, Lipunov et al., GCN 34396, Salgundi et al., GCN 34397, Ackley et al., GCN 34398, Kuin et al. GCN 34399, Mao et al., GCN 34404, Odeh et al., GCN 34405, Moskvitin et al., GCN 34406, Leonini et al., GCN 34408, de Ugarte Postigo et al. GCN 34409 & 34410, Belkin et al., GCN 34412, and N. Ruocco et al., GCN 34413, N. Ruocco et al., GCN 34413, M. Shrestha et al., GCN 34416, C. Adami et al., GCN 34418, L. Moretti et al., GCN 34419).\nWe confirm that the candidate is decaying fast.\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.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjkyMDM3MzQwLCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.IrLisVRRu_z2Y2btQEBdeUDufKCxmWWtmzJ3zMprZNo\n\n",
"published": "2023-08-14T18:22:26.365362Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-08-14T18:22:26.365399Z",
"modified": "2023-08-14T18:22:26.371715Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 2076,
"topic": "gcn.circular",
"uuid": "d6ae44f9-1831-42d7-ac8e-62a229a4fdd8",
"title": "GRB 230812B: Koshka Zeiss-1000 optical observations",
"submitter": "Hop gcn.circular",
"authors": "Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>",
"data": {
"date": "23/08/14 18:43:43 GMT",
"from": "Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>",
"title": "GCN CIRCULAR",
"number": "34421",
"subject": "GRB 230812B: Koshka Zeiss-1000 optical observations"
},
"message_text": "S. Belkin (IKI), I. Nikolenko (INASAN), N. Pankov (HSE, IKI), A. Pozanenko (IKI) report on behalf of GRB IKI FuN:\n\nWe observed the field of GRB 230812B (Fermi GBM Team, GCN 34386; Scotton et al., GCN 34392; Page et al. GCN 34394; Kuin et al., GCN 34399; Casentini et al., GCN 34402) with Zeiss-1000 telescope of Koshka observatory in R-filter. We detected the afterglow (e.g. Lesage et al., GCN 34387; Scotton et al., GCN 34392; Page, GCN 34394; Zheng & Filippenko, GCN 34395; Lipunov et al., GCN 34396; Salgundi et al., GCN 34397; Ackley et al., GCN 34398; Xiong et al., GCN 34401; Casentini et al., GCN 34402; Frederiks et al., GCN 34403; Mao et al., GCN 34404; Odeh et al., GCN 34405; Moskvitin et al., GCN 34406; Leonini et al., GCN 34408; de Ugarte Postigo et al., GCNs 24409, 34410; Belkin et al., GCN 34412) in a stacked image. Preliminary photometry of the object is following\n\nDate UT start t-T0 Filter Exp. OT Err. UL(3sigma) Telescope\n (mid, days) (s)\n\n2023-08-13 18:07:14 0.99724 R 35*120 20.18 0.07 22.0 Zeiss-1000\n\nThe photometry is based on nearby SDSS stars used in (Moskvitin et al, GCN 34406):\nRA DEC R (Lupton transformations)\n16:36:35.9365104 +47:52:54.574320 14.893 0.008\n16:36:32.6835360 +47:53:44.537784 16.531 0.009\n16:36:25.6055880 +47:53:20.456304 16.827 0.009\n16:36:25.1691816 +47:52:20.931816 16.068 0.008\n16:36:44.6580984 +47:50:56.806944 15.785 0.008\n16:36:40.1374488 +47:54:02.128752 15.698 0.008\n\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjkyMDM4NjI4LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.1oD5idTtWLnfoICL4LhhXDVtH5V_FUBk2ER0Tkjflc4\n\n",
"published": "2023-08-14T18:43:53.332910Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-08-14T18:43:53.332929Z",
"modified": "2023-08-14T18:43:53.338577Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 9147,
"topic": "lvk-users.beccatest",
"uuid": "15c09695-4fe3-4da7-a730-1652df131ce5",
"title": "Generic Message",
"submitter": "",
"authors": "",
"data": {
"ifo": [
"V1"
],
"time": [
1400508900
],
"range": 49.368874587138876
},
"message_text": "",
"published": "2024-05-23T14:15:07.416942Z",
"message_parser": "",
"retracted": false,
"created": "2024-05-23T14:15:07.416965Z",
"modified": "2024-05-23T14:15:07.416973Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 2942,
"topic": "igwn.gwalert",
"uuid": "2f55d827-b72c-4a12-ae5b-828f9218686c",
"title": "S230912ai - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230912ai/files/cwb.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230912ai/view/"
},
"event": {
"far": 1.97755e-05,
"time": "2023-09-12T22:07:06.271Z",
"group": "Burst",
"search": "AllSky",
"area_50": 772.9894472394849,
"area_90": 2994.599726113444,
"duration": 0.006382,
"pipeline": "CWB",
"properties": {},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "cd6cba1ba064b1e71d1265e439f83b43",
"classification": {},
"skymap_version": 0,
"central_frequency": 168.0495
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-09-12T22:13:15Z",
"superevent_id": "S230912ai",
"external_coinc": null
},
"message_text": "",
"published": "2023-09-12T22:13:16.912871Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-09-12T22:13:16.912891Z",
"modified": "2023-09-12T22:13:16.917450Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 2990,
"topic": "igwn.gwalert",
"uuid": "046831e0-a6b4-41e1-94e6-c095804b56aa",
"title": "S230914bw - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230914bw/files/cwb.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230914bw/view/"
},
"event": {
"far": 1.19869e-05,
"time": "2023-09-14T18:09:52.340Z",
"group": "Burst",
"search": "AllSky",
"area_50": 286.19913301700797,
"area_90": 1595.7070429577316,
"duration": 0.019364,
"pipeline": "CWB",
"properties": {},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "5a5b444453e7d01d76c506b82f7a525f",
"classification": {},
"skymap_version": 0,
"central_frequency": 312.774475
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-09-14T18:12:25Z",
"superevent_id": "S230914bw",
"external_coinc": null
},
"message_text": "",
"published": "2023-09-14T18:12:26.634272Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-09-14T18:12:26.634292Z",
"modified": "2023-09-14T18:12:26.642183Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 9148,
"topic": "lvk-users.beccatest",
"uuid": "f26c2694-ad37-486d-ae38-c816274df859",
"title": "Generic Message",
"submitter": "",
"authors": "",
"data": {
"ifo": [
"H1"
],
"time": [
1400509000
],
"range": 148.36372098167553
},
"message_text": "",
"published": "2024-05-23T14:16:39.674628Z",
"message_parser": "",
"retracted": false,
"created": "2024-05-23T14:16:39.674649Z",
"modified": "2024-05-23T14:16:39.674657Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 2029,
"topic": "gcn.circular",
"uuid": "92bb39e7-7953-46d7-b724-b50b1b0c7c08",
"title": "GRB 230812B: KAIT Optical Afterglow Candidate",
"submitter": "Hop gcn.circular",
"authors": "Weikang Zheng at UC Berkeley <weikang@berkeley.edu>",
"data": {
"date": "23/08/13 05:26:37 GMT",
"from": "Weikang Zheng at UC Berkeley <weikang@berkeley.edu>",
"title": "GCN CIRCULAR",
"number": "34395",
"subject": "GRB 230812B: KAIT Optical Afterglow Candidate"
},
"message_text": "WeiKang Zheng and Alexei V. Filippenko (UC Berkeley) report on\n\nbehalf of the KAIT GRB team:\n\n\n\nThe 0.76-m Katzman Automatic Imaging Telescope (KAIT), located at\n\nLick Observatory, responded to GRB 230812B (The Fermi GBM team,\n\nGCN 34386) starting at Aug. 13, 04:42:53 UT. We detected an uncataloged\n\noptical afterglow candidate not shown in SDSS archive at position\n\nof (error ~0.5\"):\n\n\nRA: 16:36:31.52 (J2000)\n\nDec: +47:51:32.24 (J2000)\n\n\nThis position is about 7.4 arcsec to the improved Swift/XRT\n\nlocalization (Page et al., GCN 34393), which is slightly outside its\n\nestimate 3.7 arcseconds error radius. We measure the target is\n\n~18.7 in out clear band image at ~9.75 hours after burst. We can\n\nnot estimate the variability at this time, further observations\n\nare encouraged.\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjkxOTA0NDAzLCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.JJDBsUkWZ7ohRPMn-2jZVO6Wo_JKmuiOmd6-SztnOwg\n\n",
"published": "2023-08-13T05:26:48.111805Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-08-13T05:26:48.111822Z",
"modified": "2023-08-13T05:26:48.115715Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 2030,
"topic": "gcn.circular",
"uuid": "d395f2a8-0893-47a4-997f-e51ac4624984",
"title": "Fermi GRB 230812B: MASTER optical counterpart",
"submitter": "Hop gcn.circular",
"authors": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"data": {
"date": "23/08/13 05:28:50 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "34396",
"subject": "Fermi GRB 230812B: MASTER optical counterpart"
},
"message_text": "\nV.Lipunov (Lomonosov MSU),\nD.Svinkin (Ioffe Institute),\nA.Kuznetsov, A.Sosnovskiy, N.Tiurina, E.Gorbovskoy, Ya.Kechin, P.Balanutsa, K.Zhirkov,\nO.Gress, A.Chasovnikov, G.Antipov, D.Vlasenko, V.Senik, V.Topolev, Yu.Tselik, Siyu Wu, D.Cheryasov, V.Shumkov, T.Pogrosheva (Lomonosov Moscow State University,SAI,Physics Department),\nC.Francile, F. Podesta, C.Lopez, R. Podesta (Observatorio Astronomico Felix Aguilar OAFA),\nD.Buckley (SAAO),\nR. Rebolo, M. Serra (The Instituto de Astrofisica de Canarias),\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino\nAlvarez,J.Martinez,A.Corella,L.H.Rodriguez (INAOE, Guillermo Haro Astrophysics Observatory),\nN.M.Budnev, O.Gress (ISU,API),\nA.Gabovich, V.Yurkov (BSPU),\nA. Tlatov, D. Dormidontov (Kislovodsk Solar Station of the Pulkovo Observatory),\n\nMASTER started Fermi GRB 230812B (Fermi GBM team GCN 34386, Ttrigger\u0018:58:12,\nLesage et al. GCN 34387, Evans et al. GCN 34388, Scotton et al. GCN 34387, Roberts et al. GCN 34391)\nat MASTER-SAAO (Lipunov et al GCN 34389, see covermap, near horizont; GCN 34390) by MASTER-II and MASTER very wide field cameras (Lipunov et al. 2010)\n\nFermi GBM error-box was covered by MASTER-SAAO, MASTER-Tavrida (since 2023-08-12 21:56:45 UT), MASTER-OAFA.\n\nThere is optical counterpart at\nR.A.,Dec.2000= 16 36 31.48 +47 51 35.14\nwith m\u0018.2 at several set of images.\n\nthat is in ~18\" of Swift-XRT preliminary counterpart (Swift GCN 34393)\n\nWe observed it till sunrise in MASTER-Tavrida , reduction will be continued.\n\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjkxOTA0NTMyLCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.WLSK-x_p5dMhKrYV99yDPKh9AgVxHELv3nuPF0MBd98\n\n",
"published": "2023-08-13T05:28:58.361519Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-08-13T05:28:58.361538Z",
"modified": "2023-08-13T05:28:58.365855Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 2031,
"topic": "gcn.circular",
"uuid": "903df198-ef77-4fd3-b8c7-a4950046706f",
"title": "GRB 230812B: Zwicky Transient Facility Identifies Optical Afterglow Candidate of a Fermi GRB (Trigger 713559497)",
"submitter": "Hop gcn.circular",
"authors": "Anirudh Salgundi <salgundi.anirudh@gmail.com>",
"data": {
"date": "23/08/13 08:02:28 GMT",
"from": "Anirudh Salgundi <salgundi.anirudh@gmail.com>",
"title": "GCN CIRCULAR",
"number": "34397",
"subject": "GRB 230812B: Zwicky Transient Facility Identifies Optical Afterglow Candidate of a Fermi GRB (Trigger 713559497)"
},
"message_text": "Anirudh Salgundi (IITB), Vishwajeet Swain (IITB), Harsh Kumar (IITB), Tomas Ahumada (CIT), Robert Stein (CIT), Igor Andreoni (UMD), Michael Coughlin (UMN), Shreya Anand (CIT), Viraj Karambelkar (CIT), Mansi Kasliwal (CIT), Avery Wold (IPAC), Theophile du Laz (CIT), Simeon Reusch (DESY), Igor Andreoni (UMD), Eric Bellm (UW), Varun Bhalerao (IITB), Brad Cenko (UMD), Brian Healy (UMN), David Kaplan (UWM), Jannis Necker (DESY), D. Perley (LJMU) report on behalf of the ZTF and GROWTH collaborations:\n\nWe observed the localization region of the GRB 230812B (trigger 713559497, GCN 34386) detected by the Gamma-Ray Burst Monitor (GBM) on the Fermi satellite with the 47 square-degree Zwicky Transient Facility (ZTF) camera (Graham et al., 2019; Bellm et al., 2019). We obtained images in the g-, and r- covering 420 square degrees beginning at 2023-08-13 03:34:57 (~8.5 hours after the burst trigger time). This corresponds to ~78% of the probability enclosed in the Earth-occultation corrected GRB localization map. Each exposure was 300 seconds with median depths of 21.9 mag in both g-band and r-band. The images were processed in real-time through the ZTF reduction and image subtraction pipelines at IPAC (Masci et al. 2019).\n\nWe queried the ZTF alert stream using Kowalski (Duev et al. 2019) through Fritz (Coughlin et al. 2023). We required at least 2 detections separated by at least 15 minutes to select against moving objects. Furthermore, we cross-match our candidates with the Minor Planet Center to flag known asteroids, reject stellar sources (Tachibana and Miller 2018), and apply machine learning algorithms (Mahabal et al. 2019). We require that no spatially coincident ZTF alerts were issued before the detection time of the GBM trigger. Close to 40 sources were time and spatially coincident with the burst, most of them showing g-r ~ 0 mag and a slow evolution.\n\n\nWe recover the candidate afterglow reported in Zheng et al. (GCN 34395) and Lipunov et al. (GCN 34396), and we highlight its rapid evolution: r-band decay rate ~2 mag/day. We note that this source is ~6\" from the source circulated in Page et al. (GCN 34394) detected by the Neil Gehrels Swift Observatory.\n\nWe additionally crossmatched the optical candidates to the Swift sources circulated and in Evans et al (GCN 34388, http://www.swift.ac.uk/xrt_products/TILED_GRB00115) and we find no other coincidences.\n\nThe details of the afterglow candidate in the table below:\n\nZTF name , AT name , UT first alert , t-t0 (days) , filter , mag (AB) , mag error (AB)\n-----------------------------------------------------------------\nZTF23aaxeacr , AT 2023pel , 2023-08-13 03:34:56 , 0.35 , r , 18.85 , 0.04\nZTF23aaxeacr , AT 2023pel , 2023-08-13 04:24:05 , 0.39 , g , 19.19 , 0.02\n\n\nWe encourage further follow-up.\n\n\nZTF and GROWTH are worldwide collaborations comprising Caltech, USA; IPAC, USA, WIS, Israel; OKC, Sweden; JSI/UMd, USA; U Washington, USA; DESY,\nGermany; MOST, Taiwan; UW Milwaukee, USA; LANL USA; Tokyo Tech, Japan; IITB, India; IIA, India; LJMU, UK; TTU, USA; SDSU, USA and USyd, Australia.\nZTF acknowledges the generous support of the NSF under AST MSIP Grant No 1440341.\nGROWTH acknowledges generous support of the NSF under PIRE Grant No 1545949.\nAlert distribution service provided by DIRAC@UW (Patterson et al. 2019).\nAlert database searches are done by AMPEL (Nordin et al. 2019) and Kowalski (Duev et al. 2019). The GROWTH India Telescope (GIT; Kumar et al. 2022) is a 70-cm telescope with a 0.7-degree field of view, set up by the Indian Institute of Astrophysics (IIA) and the Indian Institute of Technology Bombay (IITB) with funding from DST-SERB and IUSSTF. It is located at the Indian Astronomical Observatory (Hanle), operated by IIA. We acknowledge funding by the IITB alumni batch of 1994, which partially supports 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.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjkxOTEzNzUzLCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.cQCXVElUNfpiXP6mg79DhEqNJTSgR2nl_kpfjPjlIGw\n\n",
"published": "2023-08-13T08:02:39.842724Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-08-13T08:02:39.842743Z",
"modified": "2023-08-13T08:02:39.848891Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 2032,
"topic": "gcn.circular",
"uuid": "3866f0b7-8a38-4d6e-897c-a6b985cc6223",
"title": "GOTO confirmation and possible host galaxy of GRB230812B optical afterglow",
"submitter": "Hop gcn.circular",
"authors": "ackleyastro@gmail.com",
"data": {
"date": "23/08/13 08:19:47 GMT",
"from": "ackleyastro@gmail.com",
"title": "GCN CIRCULAR",
"number": "34398",
"subject": "GOTO confirmation and possible host galaxy of GRB230812B optical afterglow"
},
"message_text": "K. Ackley; B. P. Gompertz; B. Godson; S. Belkin; D. O'Neill; A. Levan; T. Killestein; G. Ramsay; D. Malesani; R. Starling; M. J. Dyer; J. Lyman; K. Ulaczyk; F. Jiminez-Ibarra; A. Kumar; D. Steeghs; D. K. Galloway; V. Dhillon; P. O'Brien; K. Noysena; R. Kotak; R. P. Breton; L. K. Nuttall; E. Pall'e and D. Pollacco report on behalf of the GOTO collaboration:\n\nWe report on observations with the Gravitational-wave Optical Transient Observer (GOTO; Steeghs et al. 2022) in response to GRB 230812B (Page et al. GCN 34394, Scotton et al. GCN 34392, Lesage et al. GCN 34391). We covered the field of the X-ray (Swift, Page et al. GCN 34394) and optical (KAIT Zheng et al. GCN 34395, MASTER Lipunov et al. GCN 34396) candidate afterglow. The field was observed several times between 21:08:01 UT and 23:37:33 UT on 2023-08-12 (starting 2.16 hours after trigger). Each observation consisted of 4x90s exposures in the GOTO L-band (400-700 nm).\n\nImages were processed immediately after acquisition using the GOTO pipeline. We confirm the optical afterglow as reported by KAIT (Zheng et al. GCN 34395) with the first detection at 2.29 hours. Our observations show a clear decay as the source faded by approximately 0.76 magnitudes over 2.27 hours.\n\nObs Date | RA(J2000) | Dec(J2000) | Filter | Mag(AB)\n2023-08-12 21:15:40 | 249.13 | 47.86 | L | 17.45 +/- 0.02\n\nWe note the presence of an underlying extended source at the KAIT localisation in PS1 imaging and deep HyperSuprimeCam imaging, and suggest it to be the host galaxy of GRB 230812B.\n\nMagnitudes were calibrated using ATLAS-REFCAT2 (Tonry et al. 2018) and are not corrected for Galactic extinction.\n\nObservations are ongoing.\n\nGOTO (https://goto-observatory.org) is a network of telescopes operated at the Roque de los Muchachos Observatory on La Palma, Spain, and Siding Spring Observatory in NSW, Australia, on behalf of a consortium including the University of Warwick, Monash University, Armagh Observatory & Planetarium, the University of Leicester, the University of Sheffield, the National Astronomical Research Institute of Thailand (NARIT), the University of Turku, the University of Portsmouth, the University of Manchester and the Instituto de Astrofisica de Canarias (IAC).\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjkxOTE0NzkzLCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.3ftB3Nj0sBhR5lY0VeAHQUbaO9BMJIPcJ7UFNA6dpWg\n\n",
"published": "2023-08-13T08:19:58.481138Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-08-13T08:19:58.481155Z",
"modified": "2023-08-13T08:19:58.485074Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 2033,
"topic": "gcn.circular",
"uuid": "4a04d607-9133-4703-bdfd-9d57abc4fcb7",
"title": "GRB 230812: Swift/UVOT Detection",
"submitter": "Hop gcn.circular",
"authors": "Paul Kuin at MSSL <npkuin@gmail.com>",
"data": {
"date": "23/08/13 09:01:24 GMT",
"from": "Paul Kuin at MSSL <npkuin@gmail.com>",
"title": "GCN CIRCULAR",
"number": "34399",
"subject": "GRB 230812: Swift/UVOT Detection"
},
"message_text": "Paul Kuin (MSSL/UCL) report on behalf of the Swift/UVOT team:\n\nThe Swift/UVOT began settled observations of the field of GRB 230812\n25418 s after the GBM trigger (Roberts et al., GCN Circ. 34391).\nThe Fermi LAT also detected the trigger (Scotton et al, GCN Circ. 34392).\nAn candidate optical counterpart was reported (Zheng & Filippenko, GCN\nCirc.\n34395; Lipunov et al., GCN Circ 34396; Salgundi et al., GCN Circ. 34397)\nnear the reported XRT candidate (Kennea, GCN Circ. 34393, Page, GCN Circ.\n34394). A source consistent with the XRT position is detected in the UVOT\nexposures.\n\nPreliminary detections using the UVOT photometric system\n(Breeveld et al. 2011, AIP Conf. Proc. 1358, 373) for the early exposures\nare:\n\nFilter T_start(s) T_stop(s) Exp(s) Mag\n\nwhite 25418 31151 390 20.48 +/- 0.18\n\nThe magnitudes in the table are not corrected for the Galactic extinction\ndue to the reddening of E(B-V) = 0.024 in the direction of the burst\n(Schlegel et al. 1998).\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjkxOTE3MjkwLCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.WfvfMXguaDQa138lZPu8c5aEMwCfT7IibC01pGyLGs8\n\n",
"published": "2023-08-13T09:01:34.807408Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-08-13T09:01:34.807429Z",
"modified": "2023-08-13T09:01:34.811119Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 2554,
"topic": "igwn.gwalert",
"uuid": "653a5b3b-db4a-443c-9833-5d38616f41c7",
"title": "S230828ah - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230828ah/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230828ah/view/"
},
"event": {
"far": 3.368460966157727e-06,
"time": "2023-08-28T11:35:27.287Z",
"group": "CBC",
"search": "AllSky",
"area_50": 1372.6647567428638,
"area_90": 5690.4109145317125,
"duration": null,
"pipeline": "spiir",
"properties": {
"HasNS": 0.7433182562544636,
"HasMassGap": 0.024916747524506143,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "ab5422905121529d54928bbfc5c97722",
"classification": {
"BBH": 0.048273817416677973,
"BNS": 0.0,
"NSBH": 0.17727461131489347,
"Terrestrial": 0.7744515712684286
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-08-28T11:35:52Z",
"superevent_id": "S230828ah",
"external_coinc": null
},
"message_text": "",
"published": "2023-08-28T11:35:53.066216Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-08-28T11:35:53.066238Z",
"modified": "2023-08-28T11:35:53.070908Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 4058,
"topic": "gcn.circular",
"uuid": "0219781f-f5ea-42ac-81e3-ad24b21d9dce",
"title": "GRB 231020A: BALROG localization (Fermi Trigger / GRB 231020790)",
"submitter": "Hop gcn.circular",
"authors": "Jochen Greiner at MPE <jcgrog@mpe.mpg.de>",
"data": {
"date": "23/10/20 21:23:35 GMT",
"from": "Jochen Greiner at MPE <jcgrog@mpe.mpg.de>",
"urls": {
"gcn": "https://gcn.nasa.gov/circulars/34861"
},
"title": "GCN CIRCULAR",
"number": "34861",
"subject": "GRB 231020A: BALROG localization (Fermi Trigger / GRB 231020790)"
},
"message_text": "T. Preis, B. Biltzinger, J. Burgess & J. Greiner (all MPE Garching) report:\n\nThe public trigdat data of the Fermi Gamma-ray Burst Monitor (GBM) trigger\n at 18:56:58 on 20 Oct. 2023 were automatically fitted for spectrum\nand sky location with BALROG (Burgess et al. 2018, MNRAS 476, 1427;\nBerlato et al. 2019, ApJ 873, 60).\n\nThe best-fit position (1 sigma statistical errors) is:\nRA(2000.0) = 316.0+/-0.4 deg\nDecl.(2000.0) = -31.3+/-0.3 deg\nWe estimate an additional systematic error of 2 deg.\n\nFurther details are available at:\nhttps://grb.mpe.mpg.de/grb/GRB231020790/\n\nThe Healpix map can be downloaded from:\nhttps://grb.mpe.mpg.de/grb/GRB231020790/healpix\n\nThe location parameters are available as JSON at:\nhttps://grb.mpe.mpg.de/grb/GRB231020790/json\n\n\n\n\n\nView this GCN Circular online at https://gcn.nasa.gov/circulars/34861.",
"published": "2023-10-20T21:23:47.058652Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-10-20T21:23:47.058684Z",
"modified": "2023-10-20T21:23:47.066800Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 2951,
"topic": "gcn.circular",
"uuid": "44d77897-0fb3-4d2b-bea1-0eb9c076e4af",
"title": "GRB 230911A: GOTO optical counterpart candidate",
"submitter": "Hop gcn.circular",
"authors": "Sergey Belkin at Monash University <sergey.belkin@monash.edu>",
"data": {
"date": "23/09/13 10:07:56 GMT",
"from": "Sergey Belkin at Monash University <sergey.belkin@monash.edu>",
"title": "GCN CIRCULAR",
"number": "34681",
"subject": "GRB 230911A: GOTO optical counterpart candidate"
},
"message_text": "S. Belkin; B. P. Gompertz; A. Kumar; K. Ackley; K. Wiersema; D. OâNeill; T. Killestein; R. Starling; M. J. Dyer; J. Lyman; K. Ulaczyk; F. Jimenez-Ibarra; D. Steeghs; D. K. Galloway; V. Dhillon; P. O'Brien; G. Ramsay; K. Noysena; R. Kotak; R. P. Breton; L. K. Nuttall; E. Pall'e and D. Pollacco report on behalf of the GOTO collaboration:\n\nWe report on observations with the Gravitational-wave Optical Transient Observer (GOTO; Steeghs et al. 2022) in response to GRB 230911A (Fermi GBM team, GCN 34652). Observations were performed by GOTO North and South between 04:19:47 UT on 2023-09-11 and 17:08:39 UT on 2023-09-12 (1.17 to 37.98 hours after trigger). Each observation consisted of 4x90s exposures in the GOTO L-band (400-700 nm).\n\nImages were processed immediately after acquisition using the GOTO pipeline. Difference imaging was performed using recent survey observations of the same pointings. Source candidates were initially filtered using a classifier (Killestein et al. 2021) and cross-matched against a variety of contextual and minor planet catalogues. Human vetting was carried out in real time on any candidates that passed the above checks.\n\nWe identify one candidate optical counterpart consistent within the GBM 90% localisation region. We find no evidence of this source prior to the GRB trigger time in previous GOTO observations, the ZTF observations provided by the Lasair broker (Smith et al. 2019), or the ATLAS forced photometry server (Shingles et al. 2021). However, we caution that the last available observation of the field was taken by ATLAS nine days before the GRB trigger.\n\nName | RA(J2000) | Dec(J2000) | Filter | Mag(AB) | t - trig(hrs)\n\nGOTO23akf | 03:50:00.51 | -29:49:30.66 | L | 19.22 +/- 0.10 | 1.17 \n\nThis source is seen to decay as a power-law with an index of 0.61 +/- 0.07 across 7 epochs of observations. No object is present at this position in the Legacy Survey (Dey et al. 2019).\n\nMagnitudes were calibrated using ATLAS-REFCAT2 (Tonry et al. 2018) and are not corrected for Galactic extinction.\n\nGOTO (https://goto-observatory.org) is a network of telescopes that is principally funded by the STFC and 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), the University of Turku, the University of Portsmouth, the University of Manchester and the Instituto de Astrofisica de Canarias (IAC).\n\n\nView this GCN Circular online at https://gcn.nasa.gov/circulars/34681.\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjk0NTk5NjgyLCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.smFwR8EMOEOuAm3OTPEDHHr0ai7BRP-4M6G5AqVeoW4\n\n",
"published": "2023-09-13T10:08:15.526456Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-09-13T10:08:15.526478Z",
"modified": "2023-09-13T10:08:15.532965Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 9149,
"topic": "lvk-users.beccatest",
"uuid": "98db297e-c033-40ce-960e-caa2f89cc05e",
"title": "Generic Message",
"submitter": "",
"authors": "",
"data": {
"ifo": [
"L1"
],
"time": [
1400509000
],
"range": 166.6115783269941
},
"message_text": "",
"published": "2024-05-23T14:16:39.687138Z",
"message_parser": "",
"retracted": false,
"created": "2024-05-23T14:16:39.687158Z",
"modified": "2024-05-23T14:16:39.687166Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 2036,
"topic": "gcn.circular",
"uuid": "0bac964a-32ce-4c15-9ef0-869f4cdee781",
"title": "GRB 230812B: GECAM-C observation of a very bright burst",
"submitter": "Hop gcn.circular",
"authors": "Dong Xu at NAOC/CAS <dxu@nao.cas.cn>",
"data": {
"date": "23/08/13 09:31:23 GMT",
"from": "Dong Xu at NAOC/CAS <dxu@nao.cas.cn>",
"title": "GCN CIRCULAR",
"number": "34401",
"subject": "GRB 230812B: GECAM-C observation of a very bright burst"
},
"message_text": "Shaolin Xiong, Jiacong Liu, Yue Huang report on behalf of the GECAM team:\n\nGECAM-C was triggered in-flight by a very bright burst, GRB 230812B, at 2023-08-12T18:58:12.100 UTC (T0), which was also observed by Fermi/GBM (Fermi GBM Team, GCN 34386), Fermi/LAT (Scotton et al, GCN 34392), etc. Both the GECAM-C in flight location and on-ground location are generally consistent with the Fermi/GBM within error.\n\nAccording to the realtime alert data, the GECAM-C light curve shows a FRED shape with a duration (T90) of ~4 sec (6-1000 keV). The time-averaged spectrum shows that it could be adequately fit by a Band function with a fluence about 2E-4 erg/cm2 in 20-1000 keV. We note that this analysis is based on realtime alert data and thus very preliminary. Refined analysis will be reported later.\n\nGravitational wave high-energy Electromagnetic Counterpart All sky Monitor (GECAM) mission originally consists of two microsatellites (GECAM-A and GECAM-B) launched in Dec. 2020. As the third member of GECAM constellation, GECAM-C was launched onboard SATech-01 experimental satellite in July 2022. GECAM mission is funded by the Chinese Academy of Sciences (CAS).\n\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjkxOTE5MDg4LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.zZh-va80GwAYjT-KQhXvvG331h9jLWUJZu9zcmEmB24\n\n",
"published": "2023-08-13T09:31:34.129353Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-08-13T09:31:34.129370Z",
"modified": "2023-08-13T09:31:34.133105Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 2037,
"topic": "igwn.gwalert",
"uuid": "8ff6a304-155f-411a-be4d-498a25ee2381",
"title": "S230813ae - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230813ae/files/cwb.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230813ae/view/"
},
"event": {
"far": 8.32084e-06,
"time": "2023-08-13T09:24:44.148Z",
"group": "Burst",
"search": "BBH",
"area_50": 1991.6438200860991,
"area_90": 6652.241431943711,
"duration": 0.011143,
"pipeline": "CWB",
"properties": {},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "a8da14d6c327f713764cba1e1ba726ac",
"classification": {},
"skymap_version": 0,
"central_frequency": 110.74057
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-08-13T09:32:18Z",
"superevent_id": "S230813ae",
"external_coinc": null
},
"message_text": "",
"published": "2023-08-13T09:32:19.232536Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-08-13T09:32:19.232558Z",
"modified": "2023-08-13T09:32:19.236181Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 2038,
"topic": "igwn.gwalert",
"uuid": "4dbc0489-1294-4746-8775-3cb82bf27fed",
"title": "S230813ak - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230813ak/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230813ak/view/"
},
"event": {
"far": 1.602135e-05,
"time": "2023-08-13T10:14:36.122Z",
"group": "CBC",
"search": "AllSky",
"area_50": 481.75455235120984,
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"sequence_num": 1,
"time_created": "2023-08-13T10:15:09Z",
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"published": "2023-08-13T10:15:10.231043Z",
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"created": "2023-08-13T10:15:10.231075Z",
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{
"id": 2039,
"topic": "igwn.gwalert",
"uuid": "89011d32-45b1-426b-b44f-cd4865ae1f81",
"title": "S230813ak - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
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"time_created": "2023-08-13T10:19:44Z",
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"published": "2023-08-13T10:19:44.931661Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-08-13T10:19:44.931681Z",
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{
"id": 2555,
"topic": "igwn.gwalert",
"uuid": "f3684bb1-958e-4ece-b81c-412be0fc6af3",
"title": "S230828ah - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
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"time": "2023-08-28T11:35:27.287Z",
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"area_50": 1372.6647567428638,
"area_90": 5690.4109145317125,
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"sequence_num": 2,
"time_created": "2023-08-28T11:40:26Z",
"superevent_id": "S230828ah",
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"message_text": "",
"published": "2023-08-28T11:40:28.850721Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-08-28T11:40:28.850742Z",
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{
"id": 6292,
"topic": "gcn.circular",
"uuid": "9365bb4d-4189-4a92-a9d3-77e0f5164af4",
"title": "GRB 240328B: Fermi GBM Final Real-time Localization",
"submitter": "Hop gcn.circular",
"authors": "Fermi GBM Team at MSFC/Fermi-GBM <do_not_reply@GIOC.nsstc.nasa.gov>",
"data": {
"date": "24/03/28 19:19:46 GMT",
"from": "Fermi GBM Team at MSFC/Fermi-GBM <do_not_reply@GIOC.nsstc.nasa.gov>",
"urls": {
"gcn_circular": "https://gcn.nasa.gov/circulars/35987"
},
"title": "GCN CIRCULAR",
"number": "35987",
"subject": "GRB 240328B: Fermi GBM Final Real-time Localization"
},
"message_text": "The Fermi GBM team reports the detection of a likely LONG GRB\n\nAt 19:09:10 UT on 28 Mar 2024, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 240328B (trigger 733345755.665982 / 240328798).\n\nThe on-ground calculated location, using the Fermi GBM trigger data, is RA = 223.4, Dec = -20.1 (J2000 degrees, equivalent to J2000 14h 53m, -20d 06'), with a statistical uncertainty of 11.6 degrees.\n\nThe angle from the Fermi LAT boresight is 78.0 degrees.\n\nThe skymap can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn240328798/quicklook/glg_skymap_all_bn240328798.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/2024/bn240328798/quicklook/glg_healpix_all_bn240328798.fit\n\nThe GBM light curve can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2024/bn240328798/quicklook/glg_lc_medres34_bn240328798.gif\n\n\n\n\nView this GCN Circular online at https://gcn.nasa.gov/circulars/35987.",
"published": "2024-03-28T19:20:04.661254Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2024-03-28T19:20:04.661272Z",
"modified": "2024-03-28T19:20:04.668116Z",
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{
"id": 9150,
"topic": "lvk-users.beccatest",
"uuid": "2270269d-5a1e-40c0-bdca-51821ae7fe29",
"title": "Generic Message",
"submitter": "",
"authors": "",
"data": {
"ifo": [
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"time": [
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"range": 49.49248698668142
},
"message_text": "",
"published": "2024-05-23T14:16:46.712078Z",
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"created": "2024-05-23T14:16:46.712099Z",
"modified": "2024-05-23T14:16:46.712108Z",
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{
"id": 2040,
"topic": "igwn.gwalert",
"uuid": "a8242dfc-915c-422f-8232-8a116db70a4a",
"title": "S230813ar - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
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"sequence_num": 1,
"time_created": "2023-08-13T11:31:22Z",
"superevent_id": "S230813ar",
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"published": "2023-08-13T11:31:23.698529Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-08-13T11:31:23.698550Z",
"modified": "2023-08-13T11:31:23.702352Z",
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{
"id": 2041,
"topic": "igwn.gwalert",
"uuid": "3d51b631-4732-4e02-beaa-1d27d367c2fe",
"title": "S230813ar - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
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"gracedb": "https://gracedb.ligo.org/superevents/S230813ar/view/"
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"event": {
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"time": "2023-08-13T11:30:58.060Z",
"group": "CBC",
"search": "AllSky",
"area_50": 1759.9987740078172,
"area_90": 6762.188899466373,
"duration": null,
"pipeline": "gstlal",
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"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-08-13T11:35:56Z",
"superevent_id": "S230813ar",
"external_coinc": null
},
"message_text": "",
"published": "2023-08-13T11:35:58.428736Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-08-13T11:35:58.428756Z",
"modified": "2023-08-13T11:35:58.432494Z",
"nonlocalizedevents": [],
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},
{
"id": 2042,
"topic": "gcn.circular",
"uuid": "f3743047-d4b4-4ffa-853a-c6f6a5fb426f",
"title": "GRB230812B: AGILE/MCAL detection",
"submitter": "Hop gcn.circular",
"authors": "Claudio Casentini at INAF-IAPS <claudio.casentini@inaf.it>",
"data": {
"date": "23/08/13 11:45:31 GMT",
"from": "Claudio Casentini at INAF-IAPS <claudio.casentini@inaf.it>",
"title": "GCN CIRCULAR",
"number": "34402",
"subject": "GRB230812B: AGILE/MCAL detection"
},
"message_text": "C. Casentini (INAF/IAPS), F. Longo (Univ. Trieste and INFN Trieste), C. Pittori,\nF. Verrecchia (SSDC, and INAF/OAR), M. Tavani (INAF/IAPS, and Univ. Roma Tor Vergata),\nA. Ursi (ASI and INAF/IAPS), A. Argan, M. Cardillo, Y. Evangelista, L. Foffano,\nG. Piano (INAF/IAPS), A. Addis, L. Baroncelli, A. Bulgarelli, A. Ciabattoni, A. Di Piano,\nV. Fioretti, G. Panebianco, N. Parmiggiani (INAF/OAS-Bologna), F. Lucarelli\n(SSDC, and INAF/OAR), M. Marisaldi (INAF/OAS-Bologna, and Bergen University), M. Pilia,\nA. Trois (INAF/OA-Cagliari), I. Donnarumma, E. Menegoni (ASI), A. Giuliani (INAF/IASF-Mi),\nP. W. Cattaneo (INFN Pavia), F. Cutrona (Univ. Milano Bicocca) and P. Tempesta\n(TeleSpazio) report on behalf of the AGILE Team:\n\nThe AGILE satellite detected the GRB 230812B at T0 = 2023-08-12 18:58:12 s (UTC),\nreported by Fermi (GCNs #34386, #34387, #34391, #34392), Swift (GCNs #34388, #34393,\n#34394, #34395, #34399, #34400) and MASTER (GCNs #34389, #34396).\n\nThe event lasted about 8 s and it released a total number of 17046 counts in the MCAL\ndetector (above a background rate of 590 Hz) and 97310 counts in the AC-Top detector\n(above a background rate of 3188 Hz). The AGILE ratemeters light curves can be found\nat http://www.agilescienceapp.it/notices/GRB230812B_AGILE_RM_ND.png .\n\nThe event also triggered a high time resolution MCAL data acquisition,\nfrom T0 s to T0+2 s (UTC), and released 12643 counts in the detector, above\na background rate of 561 Hz. The MCAL light curve can be found\nat http://www.agilescienceapp.it/notices/GRB230812B_084865_618951492.000000.png .\n\nAt the T0, the event was 55 deg off-axis.\n\nAdditional analysis of AGILE data is in progress. Automatic MCAL GRB alert Notices\ncan be found at: https://gcn.gsfc.nasa.gov/agile_mcal.html\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjkxOTI3MTM3LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.Qj3ebcRWA2flA6Eav0QWPrmp9C_OXo08NFnSIYTGrUQ\n\n",
"published": "2023-08-13T11:45:42.822371Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-08-13T11:45:42.822387Z",
"modified": "2023-08-13T11:45:42.826166Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 2556,
"topic": "gcn.circular",
"uuid": "b663b39a-3471-4d67-8fad-766b13ef2ca3",
"title": "GRB 230827B / GRB 230827256: Fermi GBM Observation",
"submitter": "Hop gcn.circular",
"authors": "rachel.hamburg@ijclab.in2p3.fr",
"data": {
"date": "23/08/28 13:52:48 GMT",
"from": "rachel.hamburg@ijclab.in2p3.fr",
"title": "GCN CIRCULAR",
"number": "34584",
"subject": "GRB 230827B / GRB 230827256: Fermi GBM Observation"
},
"message_text": "R. Hamburg (CNRS/IJCLab) and C. Meegan (UAH) report on behalf of\nthe Fermi Gamma-ray Burst Monitor Team:\n\n\"At 06:08:30.73 UT on 27 August 2023, the Fermi Gamma-ray Burst Monitor (GBM)\ntriggered and located GRB 230827B (trigger 714809315/230827256).\nThe optical afterglow of GRB 230827B was also detected by ZTF (GCN 34574),\nGIT (GCN 34576), and AKO (GCN 34579). The location of the afterglow is\nconsistent with the GBM on-ground calculated location, which is\nRA = 299.32, Dec = +56.47 (J2000 degrees, equivalent to\nJ2000 19h 57m 17s, +56d 28' 12\"), with a statistical\nuncertainty of 2.17 degrees.\n\nThe angle from the Fermi LAT boresight is 140 degrees.\n\nThe GBM light curve shows a multi-peaked lightcurve with a duration (T90)\nof about 11 s (50-300 keV). The time-averaged spectrum\nfrom T0+0.002 to T0+10.240 s is best fit by\na power law function with an exponential high-energy cutoff.\nThe power law index is -1.37 +/- 0.05 and the cutoff energy,\nparameterized as Epeak, is 352 +/- 52 keV.\nA Band function fits the spectrum equally well\nwith Epeak= 256 +/- 51 keV, alpha = -1.28 +/- 0.08 and beta = -2.2 +/- 0.2.\n\nThe event fluence (10-1000 keV) in this time interval is\n(1.08 +/- 0.04)E-05 erg/cm^2. The 1-sec peak photon flux measured\nstarting from T0+4.7 s in the 10-1000 keV band is 16.4 +/- 0.9 ph/s/cm^2.\n\nThe spectral analysis results presented above are preliminary;\nfinal results will be published in the GBM GRB Catalog:\nhttps://heasarc.gsfc.nasa.gov/W3Browse/fermi/fermigbrst.html\n\nFor Fermi GBM data and info, please visit the official Fermi GBM Support Page:\nhttps://fermi.gsfc.nasa.gov/ssc/data/access/gbm/\"\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjkzMjMwNzczLCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.4t8rxbipWlLU5S8kUeDpKi5Il8WzV88xMBHyBRxoLu0\n\n",
"published": "2023-08-28T13:52:58.835235Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-08-28T13:52:58.835253Z",
"modified": "2023-08-28T13:52:58.839043Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 2557,
"topic": "igwn.gwalert",
"uuid": "f6401eaf-2911-4e0a-bf8e-e196b7892e77",
"title": "S230828ap - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
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"published": "2023-08-28T16:05:15.516259Z",
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"created": "2023-08-28T16:05:15.516281Z",
"modified": "2023-08-28T16:05:15.521162Z",
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{
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"topic": "igwn.gwalert",
"uuid": "b9bf4c99-98d9-4e4b-b6ff-09063e2edba1",
"title": "S230828ap - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
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"data": {
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{
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"topic": "igwn.gwalert",
"uuid": "ca7fcaa5-1c96-4466-b501-6762ba5a211c",
"title": "S231028r - PRELIMINARY",
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"title": "S230813az - PRELIMINARY",
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{
"id": 2051,
"topic": "gcn.circular",
"uuid": "8f58edfd-f364-43a6-8871-d16021ba0be0",
"title": "GRB 230812B: Detected Optical Afterglow Candidate",
"submitter": "Hop gcn.circular",
"authors": "Mohammad Odeh at Al Khatim Observatory M44 <mshodeh@gmail.com>",
"data": {
"date": "23/08/13 17:32:55 GMT",
"from": "Mohammad Odeh at Al Khatim Observatory M44 <mshodeh@gmail.com>",
"title": "GCN CIRCULAR",
"number": "34405",
"subject": "GRB 230812B: Detected Optical Afterglow Candidate"
},
"message_text": "Mohammad Odeh, Osama Ghannam, Anas Mohammad, Khalfan Al-Noaimy, and Sameh\nAl-Ashi, report on behalf of Al-Khatim Observatory (AKO) operated by the\nInternational Astronomical Center in Abu Dhabi, UAE:\n\n\n\nWe observed the field of GRB 230812B (Lesage et al., GCN 34387; Scotton et\nal., GCN 34392; Page, GCN 34394; Zheng & Filippenko, GCN 34395; Lipunov et\nal., GCN 34396; Salgundi et al., GCN 34397; Ackley et al., GCN 34398; Xiong\net al., GCN 34401; Casentini et al., GCN 34002; Frederiks et al., GCN\n34403; Mao et al., GCN 34404), with our 0.36m f/7.7 robotic telescope. The\nobservation was done on 13 August 2023 from 16:15 to 16:47 (UT), about 21.6\nhours from the trigger.\n\n\n\nWe obtained multiple 180-sec exposures in Ic filter. We detected an optical\nafterglow candidate at:\n\nR.A. (J2000): 16:36:31.45\n\nDec. (J2000): +47:51:32.3\n\n\n\nThat is the same localization of (Zheng & Filippenko, GCN 34395), which is\nabout 5.5 arcsec from the improved Swift/XRT localization (Page, GCN 34394).\n\n\n\nThe following observation was calculated using Atlas catalogue as a\nreference:\n\n-----------------------------------------------------------------------------\n\nObsTime (mid), Exposure (sec), Filter, Mag\n\n-----------------------------------------------------------------------------\n\n2023-08-13T16:32:40Z, 10 x 180s (stacked), Ic, 18.8 +/- 0.21\n\n-----------------------------------------------------------------------------\n\n\n\nThe magnitude is not corrected for galactic extinction.\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjkxOTQ3OTgxLCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.vqj1Va68y8BpDMV_-r-gELy2FUStRdBSdvmcKFnaQ9I\n\n",
"published": "2023-08-13T17:33:11.424912Z",
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"retracted": false,
"created": "2023-08-13T17:33:11.424931Z",
"modified": "2023-08-13T17:33:11.429679Z",
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},
{
"id": 2124,
"topic": "igwn.gwalert",
"uuid": "c6ffd059-70de-489f-9c3a-0010bdf12aaf",
"title": "S230816v - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
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{
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"topic": "igwn.gwalert",
"uuid": "cee1fc1f-f191-4eb8-8bb0-110e92f26083",
"title": "S230816v - PRELIMINARY",
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"data": {
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"published": "2023-08-16T10:02:31.672803Z",
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{
"id": 6293,
"topic": "gcn.circular",
"uuid": "996c170c-3738-4e48-bac4-231e9151d824",
"title": "GRB 240328C: Glowbug gamma-ray detection",
"submitter": "Hop gcn.circular",
"authors": "C.C. Cheung at Naval Research Lab <Teddy.Cheung@nrl.navy.mil>",
"data": {
"date": "24/03/28 20:59:17 GMT",
"from": "C.C. Cheung at Naval Research Lab <Teddy.Cheung@nrl.navy.mil>",
"urls": {
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},
"title": "GCN CIRCULAR",
"number": "35988",
"subject": "GRB 240328C: Glowbug gamma-ray detection"
},
"message_text": "C.C. Cheung, R. Woolf, M. Kerr, J.E. Grove (NRL), A. Goldstein (USRA), C.A. Wilson-Hodge, D. Kocevski (MSFC), and M.S. Briggs (UAH) report:\n \nThe Glowbug gamma-ray telescope [1,2], operating on the International Space Station, reports the detection of GRB 240328C.\n\nUsing an adaptive window with a resolution of 32-ms, the burst onset is determined to be 2024-03-28 00:37:54.024 with a duration of 4.1 s and a total significance of about 16.9 sigma. The light curve comprises a single peak.\n\nUsing a standard power-law function with an exponential high-energy cutoff [3] to model the emission over this duration results in a poorly constrained power-law index and a cutoff energy (\"Epeak\") of 213 keV. The modeled 10-10000 keV fluence is 5.3e-07 erg/cm^2.\n\nThe best-fit localization is RA, Decl. (J2000, deg) = 165.0, 30.6 with a radius of 27.8 deg (95% confidence), with a highly uncertain systematic uncertainty.\n\nThe analysis results presented here are preliminary and use a response function that lacks a detailed characterization of the surrounding passive structure of the ISS.\n \nGlowbug is a NASA-funded technology demonstrator for sensitive, low-cost gamma-ray transient telescopes developed, built, and operated by the U.S. Naval Research Laboratory (NRL) with support from the University of Alabama in Huntsville, USRA, and NASA MSFC. It was launched on 2023 March 15 aboard the Department of Defense Space Test Programâs STP-H9 to the ISS. The detector comprises 12 large-area (15 cm x 15 cm) CsI:Tl panels covering the surface of a half cube, and two hexagonal (5-cm diameter, 10-cm length) CLLB scintillators, giving it a large field of view (instantaneous FoV ~2/3 sky) over a wide energy band of 50 keV to >2 MeV.\n \n[1] Grove, J.E. et al. 2020, Proc. Yamada Conf. LXXI, arXiv:2009.11959\n[2] Woolf, R.S. et al. 2022, Proc. SPIE, 12181, id. 121811O\n[3] Goldstein, A. et al. 2020, ApJ 895, 40, arXiv :1909.03006\n \nDistribution Statement A: Approved for public release. Distribution is unlimited.\n\n\nView this GCN Circular online at https://gcn.nasa.gov/circulars/35988.",
"published": "2024-03-28T20:59:32.349950Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2024-03-28T20:59:32.349968Z",
"modified": "2024-03-28T20:59:32.357217Z",
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}
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