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"id": 1659,
"topic": "igwn.gwalert",
"uuid": "51e63617-f032-4b40-bd02-9d2111302f6b",
"title": "S230730r - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
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"data": {
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"retracted": false,
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{
"id": 2509,
"topic": "gcn.circular",
"uuid": "0079b365-c37d-43c7-b906-b0f442e4b5be",
"title": "GRB 230826A: Enhanced Swift-XRT position",
"submitter": "Hop gcn.circular",
"authors": "Phil Evans at U of Leicester <pae9@star.le.ac.uk>",
"data": {
"date": "23/08/27 07:40:11 GMT",
"from": "Phil Evans at U of Leicester <pae9@star.le.ac.uk>",
"title": "GCN CIRCULAR",
"number": "34569",
"subject": "GRB 230826A: Enhanced Swift-XRT position"
},
"message_text": "J.P. Osborne, A.P. Beardmore, P.A. Evans and M.R. Goad (U. Leicester)\nreport on behalf of the Swift-XRT team.\n\nUsing 1910 s of XRT Photon Counting mode data and 5 UVOT\nimages for GRB 230826A, we find an astrometrically corrected X-ray\nposition (using the XRT-UVOT alignment and matching UVOT field sources\nto the USNO-B1 catalogue): RA, Dec = 83.06410, +66.12384 which is equivalent\nto:\n\nRA (J2000): 05h 32m 15.38s\nDec (J2000): +66d 07' 25.8\"\n\nwith an uncertainty of 2.0 arcsec (radius, 90% confidence).\n\nThis position may be improved as more data are received. The latest\nposition can be viewed at http://www.swift.ac.uk/xrt_positions. Position\nenhancement is described by Goad et al. (2007, A&A, 476, 1401) and Evans\net al. (2009, MNRAS, 397, 1177).\n\nThis circular was automatically generated, and is an official product of the\nSwift-XRT team.\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjkzMTIyMDE3LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.IHL9f2dbHvJjT0Y5OjXEepRIxNjwdMJB7rdNu20XDmU\n\n",
"published": "2023-08-27T07:40:23.012064Z",
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"title": "S230827z - PRELIMINARY",
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"title": "S230827z - PRELIMINARY",
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{
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"topic": "igwn.gwalert",
"uuid": "4ed4e4fc-c15f-48d3-9ca8-a1a6d6e79d40",
"title": "S231029k - PRELIMINARY",
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"data": {
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"published": "2023-10-31T23:27:48.455263Z",
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"retracted": false,
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{
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1400627600
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"published": "2024-05-24T23:13:19.362571Z",
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"topic": "igwn.gwalert",
"uuid": "1719a42c-c7f3-4a49-b235-4b2104c70568",
"title": "S230730av - PRELIMINARY",
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"topic": "igwn.gwalert",
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"title": "S230730av - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
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"sequence_num": 2,
"time_created": "2023-07-30T12:38:25Z",
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"external_coinc": null
},
"message_text": "",
"published": "2023-07-30T12:38:25.676856Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-07-30T12:38:25.676878Z",
"modified": "2023-07-30T12:38:25.682772Z",
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},
{
"id": 1668,
"topic": "gcn.circular",
"uuid": "9e782f15-a87d-45e2-9f12-2a762ec08d4e",
"title": "GRB 230723B: Swift-BAT refined analysis",
"submitter": "Hop gcn.circular",
"authors": "Tyler Parsotan at NASA GSFC <tyler.parsotan@nasa.gov>",
"data": {
"date": "23/07/30 13:50:12 GMT",
"from": "Tyler Parsotan at NASA GSFC <tyler.parsotan@nasa.gov>",
"title": "GCN CIRCULAR",
"number": "34297",
"subject": "GRB 230723B: Swift-BAT refined analysis"
},
"message_text": "T. Sakamoto (AGU), S. D. Barthelmy (GSFC),\nH. A. Krimm (NSF), S. Laha (GSFC/UMBC),\nA. Y. Lien (U Tampa), C. B. Markwardt (GSFC),\nD. M. Palmer (LANL), T. Parsotan (GSFC/UMBC),\nM. Stamatikos (OSU) (i.e. the Swift-BAT team):\n\nUsing the data set from T-240 to T+60 sec from the recent telemetry downlink,\nwe report further analysis of BAT GRB 230723B (trigger #1180410)\n(Page, et al., GCN Circ. 34234). The BAT ground-calculated position is\nRA, Dec = 250.391, -5.319 deg which is\n RA(J2000) = 16h 41m 33.8s\n Dec(J2000) = -05d 19' 08.1\"\nwith an uncertainty of 1.0 arcmin, (radius, sys+stat, 90% containment).\nThe partial coding was 39%.\n\nThe light curve shows a fast rise exponential decay type profile.\nT90 (15-350 keV) is 6.64 +- 0.81 sec (estimated error including systematics).\n\nThe time-averaged spectrum from T-0.22 to T+7.94 sec is best fit by a power law\nwith an exponential cutoff. This fit gives a photon index 1.09 +- 0.38,\nand Epeak of 65.9 +- 15.8 keV (chi squared 41.57 for 56 d.o.f.). For this\nmodel the total fluence in the 15-150 keV band is 1.7 +- 0.1 x 10^-06 erg/cm2\nand the 1-sec peak flux measured from T+1.64 sec in the 15-150 keV band is\n5.1 +- 0.5 ph/cm2/sec. A fit to a simple power law gives a photon index\nof 1.77 +- 0.08 (chi squared 52.21 for 57 d.o.f.). All the quoted errors\nare at the 90% confidence level.\n\nThe results of the batgrbproduct analysis are available at\nhttp://gcn.gsfc.nasa.gov/notices_s/1180410/BA/\n\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjkwNzI1MDE3LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.CeoUkUEJYVmqCJ5Q95vqPfE-c50Uaierw4qeFrWGUsw\n\n",
"published": "2023-07-30T13:50:24.322226Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-07-30T13:50:24.322245Z",
"modified": "2023-07-30T13:50:24.327807Z",
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},
{
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"topic": "igwn.gwalert",
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"title": "S230730bq - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
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"sequence_num": 2,
"time_created": "2023-07-31T10:21:48Z",
"superevent_id": "S230731ag",
"external_coinc": null
},
"message_text": "",
"published": "2023-07-31T10:21:48.734757Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-07-31T10:21:48.734778Z",
"modified": "2023-07-31T10:21:48.738448Z",
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},
{
"id": 1688,
"topic": "igwn.gwalert",
"uuid": "47435a59-376b-4639-b39a-c5aee4c7b660",
"title": "S230731ai - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
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"sequence_num": 1,
"time_created": "2023-07-31T10:27:35Z",
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},
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"published": "2023-07-31T10:27:36.730329Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-07-31T10:27:36.730349Z",
"modified": "2023-07-31T10:27:36.734019Z",
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},
{
"id": 2515,
"topic": "igwn.gwalert",
"uuid": "9ebe8572-00ea-4a07-b7c4-d5d3b81a2ff4",
"title": "S230827au - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230827au/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230827au/view/"
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"event": {
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"time": "2023-08-27T10:17:05.870Z",
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"area_90": 9601.519301215752,
"duration": null,
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"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-08-27T10:22:07Z",
"superevent_id": "S230827au",
"external_coinc": null
},
"message_text": "",
"published": "2023-08-27T10:22:08.361326Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-08-27T10:22:08.361348Z",
"modified": "2023-08-27T10:22:08.364898Z",
"nonlocalizedevents": [],
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},
{
"id": 3273,
"topic": "hermes.message",
"uuid": "2191c630-20ed-4eca-bc78-44fd4401d0ad",
"title": "INTEGRAL follow-up of S230916bd",
"submitter": "Volodymyr Savchenko",
"authors": "",
"data": {},
"message_text": "INTEGRAL follow-up of S230916bd at 2023-09-16T13:23:55.000\n\n\nSPI-ACS excesses:\nat T0+66.79 FAP = 0.038\nat T0+-42.19 FAP = 0.149\nat T0+-15.49 FAP = 0.302\nat T0+-18.29 FAP = 0.942\n\n\n\n\nnext break in data in 4.2 hr: 2023-09-16T17:33:35, for 9.3 hr",
"published": "2023-09-21T21:31:51.464817Z",
"message_parser": "Hermes Message Parser v2",
"retracted": false,
"created": "2023-09-21T21:31:51.464843Z",
"modified": "2023-09-21T21:31:51.471676Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1689,
"topic": "igwn.gwalert",
"uuid": "0d917faf-1ad5-443e-9757-d58bed44e9e5",
"title": "S230731ai - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
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"event": {
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"time": "2023-07-31T10:27:10.322Z",
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"area_50": 158.52158723925916,
"area_90": 2713.436354967703,
"duration": null,
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"properties": {
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},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-07-31T10:32:09Z",
"superevent_id": "S230731ai",
"external_coinc": null
},
"message_text": "",
"published": "2023-07-31T10:32:11.575829Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-07-31T10:32:11.575852Z",
"modified": "2023-07-31T10:32:11.579748Z",
"nonlocalizedevents": [],
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},
{
"id": 1690,
"topic": "igwn.gwalert",
"uuid": "583b2c9b-0a01-4048-9889-5a3c6d0e1f94",
"title": "S230731ak - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
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"gracedb": "https://gracedb.ligo.org/superevents/S230731ak/view/"
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"event": {
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"time": "2023-07-31T10:41:22.503Z",
"group": "CBC",
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"area_90": 8134.434009386631,
"duration": null,
"pipeline": "gstlal",
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"NSBH": 4.821880871045735e-17,
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},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-07-31T10:41:44Z",
"superevent_id": "S230731ak",
"external_coinc": null
},
"message_text": "",
"published": "2023-07-31T10:41:46.270271Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-07-31T10:41:46.270291Z",
"modified": "2023-07-31T10:41:46.274145Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1691,
"topic": "igwn.gwalert",
"uuid": "cd91716a-da52-44e9-a918-1a1bee72a272",
"title": "S230731ak - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230731ak/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230731ak/view/"
},
"event": {
"far": 2.377568405564951e-06,
"time": "2023-07-31T10:41:22.503Z",
"group": "CBC",
"search": "AllSky",
"area_50": 2146.073850804954,
"area_90": 8134.434009386631,
"duration": null,
"pipeline": "gstlal",
"properties": {
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"skymap_hash": "e6c1e231ab2b1d93462f788b8d51d6b4",
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"BNS": 5.94648781640144e-19,
"NSBH": 4.821880871045735e-17,
"Terrestrial": 0.5329247750748936
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"skymap_version": 0,
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},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-07-31T10:46:19Z",
"superevent_id": "S230731ak",
"external_coinc": null
},
"message_text": "",
"published": "2023-07-31T10:46:20.912933Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-07-31T10:46:20.912952Z",
"modified": "2023-07-31T10:46:20.917288Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1692,
"topic": "gcn.circular",
"uuid": "49d66604-8bae-428a-97f7-3adc5f78016d",
"title": "GRB 230728A: Swift-BAT refined analysis",
"submitter": "Hop gcn.circular",
"authors": "Tyler Parsotan at NASA GSFC <tyler.parsotan@nasa.gov>",
"data": {
"date": "23/07/31 12:57:17 GMT",
"from": "Tyler Parsotan at NASA GSFC <tyler.parsotan@nasa.gov>",
"title": "GCN CIRCULAR",
"number": "34299",
"subject": "GRB 230728A: Swift-BAT refined analysis"
},
"message_text": "M. Stamatikos (OSU), S. D. Barthelmy (GSFC),\n\nH. A. Krimm (NSF), S. Laha (GSFC/UMBC),\n\nA. Y. Lien (U Tampa), C. B. Markwardt (GSFC),\n\nD. M. Palmer (LANL), T. Parsotan (GSFC/UMBC),\n\nT. Sakamoto (AGU), (i.e. the Swift-BAT team):\n\n\n\nUsing the data set from T-240 to T+962 sec from the recent telemetry downlink,\n\nwe report further analysis of BAT GRB 230728A (trigger #1181187)\n\n(Salvaggio, et al., GCN Circ. 34282). The BAT ground-calculated position is\n\nRA, Dec = 343.514, 28.169 deg which is\n\n RA(J2000) = 22h 54m 03.4s\n\n Dec(J2000) = +28d 10' 09.5\"\n\nwith an uncertainty of 1.3 arcmin, (radius, sys+stat, 90% containment).\n\nThe partial coding was 49%.\n\n\n\nHe mask-weighted light curve shows a complex multi-peaked structure with some\n\nemission prior to the trigger time.\n\nT90 (15-350 keV) is 15.10 +- 0.89 sec (estimated error including systematics).\n\n\n\nThe time-averaged spectrum from T-5.62 to T+10.74 sec is best fit by a simple\n\npower-law model. The power law index of the time-averaged spectrum is\n\n1.58 +- 0.13. The fluence in the 15-150 keV band is 1.1 +- 0.1 x 10^-06 erg/cm2.\n\nThe 1-sec peak photon flux measured from T+0.41 sec in the 15-150 keV band\n\nis 2.5 +- 0.3 ph/cm2/sec. All the quoted errors are at the 90% confidence\n\nlevel.\n\n\n\nThe results of the batgrbproduct analysis are available at\n\nhttp://gcn.gsfc.nasa.gov/notices_s/1181187/BA/\n\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjkwODA4MjQyLCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.X1D1Z1zeVafMKkMfuaOAgM2I9ERuTzSnAamNX4Mplks\n\n",
"published": "2023-07-31T12:57:33.216786Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-07-31T12:57:33.216813Z",
"modified": "2023-07-31T12:57:33.222412Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1693,
"topic": "gcn.circular",
"uuid": "a182ada2-8c1c-4108-9ae5-0d77d1aab271",
"title": "Fermi trigger No 712390645: 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": "23/07/31 15:47:35 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "34300",
"subject": "Fermi trigger No 712390645: Global MASTER-Net observations report"
},
"message_text": "V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko,\nG.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D.Cheryasov, Ya.Kechin\n(Lomonosov Moscow State University, SAI, Physics Department),\n\nR. Podesta, C.Lopez, F. Podesta, C.Francile\n(Observatorio Astronomico Felix Aguilar OAFA),\n\nR. Rebolo, M. Serra\n(The Instituto de Astrofisica de Canarias),\n\nD. Buckley\n(South African Astronomical Observatory),\n\nO.A. Gres, N.M. Budnev\n(Irkutsk State University, API),\n\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez\n(INAOE, Guillermo Haro Astrophysics Observatory),\n\nA. Tlatov, D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nA. Gabovich, V.Yurkov\n(Blagoveschensk Educational State University)\n\n\nMASTER-Tunka robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Russia (Applied Physics Institute, Irkutsk State University) started inspect of the Fermi GRB230730.26 (trigger No 712390645,13h 39m 00.00s , +32d 54m 00.0s, R3.9) errorbox 1 days 29758 sec after notice time and 1 days 29791 sec after trigger time at 2023-07-31 14:33:51 UT, with upper limit up to 16.8 mag. Observations started at twilight. The observations began at zenith distance = 74 deg. The sun altitude is -12.4 deg.\n\nThe galactic latitude b = 78 deg., longitude l = 63 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/observ.php?id\"47493\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 116222 | 2023-07-31 14:33:51 | MASTER-Tunka | (12h 01m 31.40s , +20d 20m 14.0s) | C | 60 | 16.8 |\n 116308 | 2023-07-31 14:35:18 | MASTER-Tunka | (11h 54m 21.62s , +22d 12m 47.3s) | C | 60 | 16.2 |\n 116982 | 2023-07-31 14:46:32 | MASTER-Tunka | (11h 54m 28.70s , +22d 12m 35.0s) | C | 60 | 16.4 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjkwODE4NDYxLCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.1B-rashnXjXhvVX0_LJMIhWKfAsSUrHMfFZEO4kWQyM\n\n",
"published": "2023-07-31T15:47:51.226853Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-07-31T15:47:51.226882Z",
"modified": "2023-07-31T15:47:51.233071Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 4052,
"topic": "gcn.circular",
"uuid": "fcfa767b-aec6-447f-9d27-a44ef6af3c83",
"title": "GRB 231020A: 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": "23/10/20 19:04:32 GMT",
"from": "Fermi GBM Team at MSFC/Fermi-GBM <do_not_reply@GIOC.nsstc.nasa.gov>",
"urls": {
"gcn": "https://gcn.nasa.gov/circulars/34856"
},
"title": "GCN CIRCULAR",
"number": "34856",
"subject": "GRB 231020A: Fermi GBM Final Real-time Localization"
},
"message_text": "The Fermi GBM team reports the detection of a likely LONG GRB\n\nAt 18:56:58 UT on 20 Oct 2023, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 231020A (trigger 719521023.300322 / 231020790).\n\nThe on-ground calculated location, using the Fermi GBM trigger data, is RA = 317.5, Dec = -28.7 (J2000 degrees, equivalent to J2000 21h 10m, -28d 41'), with a statistical uncertainty of 1.0 degrees.\n\nThe angle from the Fermi LAT boresight is 87.0 degrees.\n\nThe skymap can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn231020790/quicklook/glg_skymap_all_bn231020790.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/bn231020790/quicklook/glg_healpix_all_bn231020790.fit\n\nThe GBM light curve can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn231020790/quicklook/glg_lc_medres34_bn231020790.gif\n\n\n\n\nView this GCN Circular online at https://gcn.nasa.gov/circulars/34856.",
"published": "2023-10-20T19:04:43.437197Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-10-20T19:04:43.437227Z",
"modified": "2023-10-20T19:04:43.445072Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 11705,
"topic": "lvk-users.beccatest",
"uuid": "2a19e903-7a9d-4e83-964b-5721aea59c86",
"title": "Generic Message",
"submitter": "",
"authors": "",
"data": {
"ifo": [
"V1"
],
"time": [
1400627800
],
"range": 53.405371680370315
},
"message_text": "",
"published": "2024-05-24T23:16:47.870702Z",
"message_parser": "",
"retracted": false,
"created": "2024-05-24T23:16:47.870715Z",
"modified": "2024-05-24T23:16:47.870719Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 11706,
"topic": "lvk-users.beccatest",
"uuid": "e32d9474-f336-43e6-ac8d-e52fa47b4bc2",
"title": "Generic Message",
"submitter": "",
"authors": "",
"data": {
"ifo": [
"L1"
],
"time": [
1400627900
],
"range": 158.07335375861524
},
"message_text": "",
"published": "2024-05-24T23:18:20.023269Z",
"message_parser": "",
"retracted": false,
"created": "2024-05-24T23:18:20.023284Z",
"modified": "2024-05-24T23:18:20.023289Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1695,
"topic": "igwn.gwalert",
"uuid": "cb43ed26-d7e3-4cb5-b0f1-364b6f826cc9",
"title": "S230729z - UPDATE",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230729z/files/bayestar.multiorder.fits,1",
"gracedb": "https://gracedb.ligo.org/superevents/S230729z/view/"
},
"event": {
"far": 3.393122427937458e-09,
"time": "2023-07-29T08:23:17.201Z",
"group": "CBC",
"search": "AllSky",
"area_50": 611.635243947638,
"area_90": 1944.6433759542738,
"duration": null,
"pipeline": "gstlal",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.03734335839598998,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": true,
"skymap_hash": "9ddc80d137971193fbe1638d10d75708",
"classification": {
"BBH": 0.9970115962123625,
"BNS": 1.686900110238534e-19,
"NSBH": 1.0474726072022376e-17,
"Terrestrial": 0.002988403787637539
},
"skymap_version": 1,
"central_frequency": null
},
"alert_type": "UPDATE",
"sequence_num": 4,
"time_created": "2023-07-31T19:32:03Z",
"superevent_id": "S230729z",
"external_coinc": null
},
"message_text": "",
"published": "2023-07-31T19:32:04.626068Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-07-31T19:32:04.626089Z",
"modified": "2023-07-31T19:32:04.633542Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1696,
"topic": "gcn.circular",
"uuid": "9e44d76f-70e9-494f-bcc1-cd9965de1c48",
"title": "GRB 230723A: Detection of candidate millimeter-band radiation by SPT-3G",
"submitter": "Hop gcn.circular",
"authors": "Sam Guns at S Pole Telescope & UC Berkeley <sguns@berkeley.edu>",
"data": {
"date": "23/07/31 19:40:10 GMT",
"from": "Sam Guns at S Pole Telescope & UC Berkeley <sguns@berkeley.edu>",
"title": "GCN CIRCULAR",
"number": "34301",
"subject": "GRB 230723A: Detection of candidate millimeter-band radiation by SPT-3G"
},
"message_text": "S. Guns (UC Berkeley), A. Foster (CWRU), C. Tandoi (UIUC), K. Phadke (UIUC), N. Whitehorn (MSU), G. Holder (UIUC), J. Vieira (UIUC) on behalf of the South Pole Telescope Collaboration:\n\nOn 26 July 2023 at 16:48 UTC the South Pole Telescope detected a millimeter-band transient candidate at RA = 43.5275, Dec = -70.4770 (J2000 degrees, uncertainty 12 arcseconds) using the SPT-3G camera in 2 bands centered at 95 GHz and 150 GHz. Peak emission was observed two hours later at 19:14 UTC with flux levels of 18.5 mJy in both bands, after which the SPT slewed away from the observing field. The next series of observations on 28 July showed flux levels consistent with zero. The spatial location of the emission is consistent (1.5 sigma) with GRB 230723A which was detected by Fermi-GBM on 23 July 2023 at RA = 21.0, Dec = -71.2 (J2000 degrees, uncertainty 4.8 degrees). From the SPT-3G transients program, short duration (<1 week) millimeter-band transients that are not associated with nearby stars are rare (<3 events per year). A table of SPT-3G observations is given below.\n\nThe lightcurve can be found at:\nhttps://pole.uchicago.edu/public/data/transients/lightcurves/SPT-SVJ025406.5-702837.png\n\nObservation time | Flux (95 GHz) | Error (95 GHz) | Flux (150 GHz) | Error (150 GHz)\n2023-7-22 05:04 UTC | -3.0 mJy | 2.5 mJy | -3.3 mJy | 3.0 mJy\n2023-7-26 16:48 UTC | 13.3 mJy | 4.4 mJy | 14.0 mJy | 4.9 mJy\n2023-7-26 19:14 UTC | 18.5 mJy | 4.4 mJy | 18.5 mJy | 4.9 mJy\n2023-7-28 08:12 UTC | 1.7 mJy | 2.5 mJy | 1.8 mJy | 2.8 mJy\n\nThe South Pole Telescope is a 10-meter telescope located at Amundsen-Scott South Pole Station and supported by the National Science Foundation and the US Dept. of Energy. The SPT online transient program providing data in this circular is supported by NSF grants AST-1716965 and OPP 1852617, and observes 1500 square degrees of the southern sky at 95, 150, and 220 GHz with an average revisit cadence of 12 hours. For more details on the SPT transient program and survey strategy, please see https://arxiv.org/abs/2103.06166.\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjkwODMyNDE2LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.gX1UfB3z1tt_3z8gtkoeyd3Ri5uSRA2PnaAXry3h0pI\n\n",
"published": "2023-07-31T19:40:21.673839Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-07-31T19:40:21.673857Z",
"modified": "2023-07-31T19:40:21.681131Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1697,
"topic": "gcn.circular",
"uuid": "74ed23be-8f46-4cbe-b8d4-fb6c7c4ebc99",
"title": "LIGO/Virgo/KAGRA S230729z: Updated Sky localization",
"submitter": "Hop gcn.circular",
"authors": "Christopher P L Berry at LVK Collaboration <christopher.berry@ligo.org>",
"data": {
"date": "23/07/31 19:51:04 GMT",
"from": "Christopher P L Berry at LVK Collaboration <christopher.berry@ligo.org>",
"title": "GCN CIRCULAR",
"number": "34302",
"subject": "LIGO/Virgo/KAGRA S230729z: Updated Sky localization"
},
"message_text": "The LIGO Scientific Collaboration, the Virgo Collaboration, and the KAGRA Collaboration report:\n\nWe have conducted further analysis of the LIGO Hanford Observatory (H1) and LIGO Livingston Observatory (L1) data around the time of the compact binary merger (CBC) candidate S230729z (GCN Circular 34293). Parameter estimation has been performed using Bilby [1] and a new sky map, Bilby.multiorder.fits,0, distributed via GCN Notice, is available for retrieval from the\nGraceDB event page:\n\nhttps://gracedb.ligo.org/superevents/S230729z\n\nFor the Bilby.multiorder.fits,0 sky map, the 90% credible region is 1945 deg2. Marginalized over the whole sky, the a posteriori luminosity distance estimate is 1495 +/- 444 Mpc (a posteriori mean +/- standard deviation).\n\nFor further information about analysis methodology and the contents of this alert, refer to the LIGO/Virgo/KAGRA Public Alerts User Guide https://emfollow.docs.ligo.org/userguide/.\n\n\n [1] Ashton et al. ApJS 241, 27 (2019)\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjkwODMzMDcwLCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.HsMeeJyj3s_h3f5hf7-KM59aNn_VZAtn3bXXozC1V0I\n\n",
"published": "2023-07-31T19:51:15.820188Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-07-31T19:51:15.820205Z",
"modified": "2023-07-31T19:51:15.826333Z",
"nonlocalizedevents": [
{
"event_id": "S230729z"
}
],
"targets": []
},
{
"id": 1698,
"topic": "igwn.gwalert",
"uuid": "1494dacd-6fee-4afb-8b97-9fd7dce8e604",
"title": "S230731al - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230731al/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230731al/view/"
},
"event": {
"far": 9.158235e-06,
"time": "2023-07-31T21:43:05.388Z",
"group": "CBC",
"search": "AllSky",
"area_50": 429.50852293681476,
"area_90": 1587.1042830943168,
"duration": null,
"pipeline": "MBTA",
"properties": {
"HasNS": 1.0,
"HasMassGap": 0.006068376068376069,
"HasRemnant": 1.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "5b970646228ae781dc2261dbb16943b2",
"classification": {
"BBH": 0.0,
"BNS": 0.001325529,
"NSBH": 0.000645153,
"Terrestrial": 0.998029318
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-07-31T21:43:38Z",
"superevent_id": "S230731al",
"external_coinc": null
},
"message_text": "",
"published": "2023-07-31T21:43:39.842798Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-07-31T21:43:39.842819Z",
"modified": "2023-07-31T21:43:39.850905Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1699,
"topic": "igwn.gwalert",
"uuid": "e15eaf27-7915-4107-babc-2661f99c7d36",
"title": "S230731al - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230731al/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230731al/view/"
},
"event": {
"far": 9.158235e-06,
"time": "2023-07-31T21:43:05.388Z",
"group": "CBC",
"search": "AllSky",
"area_50": 429.50852293681476,
"area_90": 1587.1042830943168,
"duration": null,
"pipeline": "MBTA",
"properties": {
"HasNS": 1.0,
"HasMassGap": 0.006068376068376069,
"HasRemnant": 1.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "5b970646228ae781dc2261dbb16943b2",
"classification": {
"BBH": 0.0,
"BNS": 0.001325529,
"NSBH": 0.000645153,
"Terrestrial": 0.998029318
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-07-31T21:48:12Z",
"superevent_id": "S230731al",
"external_coinc": null
},
"message_text": "",
"published": "2023-07-31T21:48:15.343461Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-07-31T21:48:15.343482Z",
"modified": "2023-07-31T21:48:15.349805Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1700,
"topic": "igwn.gwalert",
"uuid": "d43db824-7779-432c-a839-459d3b141378",
"title": "S230731an - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230731an/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230731an/view/"
},
"event": {
"far": 4.571287005064243e-27,
"time": "2023-07-31T21:53:07.888Z",
"group": "CBC",
"search": "AllSky",
"area_50": 196.76190394919294,
"area_90": 694.9351382348462,
"duration": null,
"pipeline": "gstlal",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.12463847974647461,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": true,
"skymap_hash": "f5be5ccb722946c914303002a869bd1a",
"classification": {
"BBH": 0.9995280253726263,
"BNS": 2.982154796455988e-32,
"NSBH": 0.00047197462737353816,
"Terrestrial": 1.1102230246251565e-16
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-07-31T21:53:38Z",
"superevent_id": "S230731an",
"external_coinc": null
},
"message_text": "",
"published": "2023-07-31T21:53:40.068185Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-07-31T21:53:40.068206Z",
"modified": "2023-07-31T21:53:40.075115Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 2665,
"topic": "igwn.gwalert",
"uuid": "f6b818f0-c502-4180-ab3d-ef95047b28bd",
"title": "S230902as - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230902as/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230902as/view/"
},
"event": {
"far": 1.402835187036544e-05,
"time": "2023-09-02T17:15:30.655Z",
"group": "CBC",
"search": "AllSky",
"area_50": 505.25477441712246,
"area_90": 1961.429248858497,
"duration": null,
"pipeline": "spiir",
"properties": {
"HasNS": 0.8292598528025147,
"HasMassGap": 0.5699797222337142,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "1343fd71ef2526ca4672919add49c38c",
"classification": {
"BBH": 0.008948074982277229,
"BNS": 0.0,
"NSBH": 0.08110115371217917,
"Terrestrial": 0.9099507713055436
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-09-02T17:20:31Z",
"superevent_id": "S230902as",
"external_coinc": null
},
"message_text": "",
"published": "2023-09-02T17:20:32.703067Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-09-02T17:20:32.703086Z",
"modified": "2023-09-02T17:20:32.706519Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1701,
"topic": "igwn.gwalert",
"uuid": "10a65d43-a59b-4257-b5c1-16680bbd0492",
"title": "S230731an - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230731an/files/bayestar.multiorder.fits,1",
"gracedb": "https://gracedb.ligo.org/superevents/S230731an/view/"
},
"event": {
"far": 3.167545842243851e-10,
"time": "2023-07-31T21:53:07.889Z",
"group": "CBC",
"search": "AllSky",
"area_50": 190.62456916858628,
"area_90": 645.836459989993,
"duration": null,
"pipeline": "pycbc",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.052964740814740806,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": true,
"skymap_hash": "0ed8007d53d2723da220c5430e31fad2",
"classification": {
"BBH": 0.8139519908482554,
"BNS": 0.0,
"NSBH": 0.1838623882504885,
"Terrestrial": 0.002185620901256069
},
"skymap_version": 1,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-07-31T21:58:16Z",
"superevent_id": "S230731an",
"external_coinc": null
},
"message_text": "",
"published": "2023-07-31T21:58:18.478739Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-07-31T21:58:18.478762Z",
"modified": "2023-07-31T21:58:18.484946Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1702,
"topic": "igwn.gwalert",
"uuid": "c88dc1cf-ed11-4235-8d4a-2f4cf7bcfd92",
"title": "S230731an - INITIAL",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230731an/files/bayestar.multiorder.fits,1",
"gracedb": "https://gracedb.ligo.org/superevents/S230731an/view/"
},
"event": {
"far": 3.167545842243851e-10,
"time": "2023-07-31T21:53:07.889Z",
"group": "CBC",
"search": "AllSky",
"area_50": 190.62456916858628,
"area_90": 645.836459989993,
"duration": null,
"pipeline": "pycbc",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.052964740814740806,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": true,
"skymap_hash": "0ed8007d53d2723da220c5430e31fad2",
"classification": {
"BBH": 0.8139519908482554,
"BNS": 0.0,
"NSBH": 0.1838623882504885,
"Terrestrial": 0.002185620901256069
},
"skymap_version": 1,
"central_frequency": null
},
"alert_type": "INITIAL",
"sequence_num": 3,
"time_created": "2023-07-31T22:13:35Z",
"superevent_id": "S230731an",
"external_coinc": null
},
"message_text": "",
"published": "2023-07-31T22:13:37.478037Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-07-31T22:13:37.478059Z",
"modified": "2023-07-31T22:13:37.486170Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1703,
"topic": "gcn.circular",
"uuid": "0768a4a0-96ed-4b18-9140-f944ce6debba",
"title": "LIGO/Virgo/KAGRA S230731an: Identification of a GW compact binary merger candidate",
"submitter": "Hop gcn.circular",
"authors": "J. C. Driggers at California Institute of Technology, LIGO Hanford Observatory <jenne@caltech.edu>",
"data": {
"date": "23/07/31 22:22:25 GMT",
"from": "J. C. Driggers at California Institute of Technology, LIGO Hanford Observatory <jenne@caltech.edu>",
"title": "GCN CIRCULAR",
"number": "34303",
"subject": "LIGO/Virgo/KAGRA S230731an: 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 S230731an during\nreal-time processing of data from LIGO Hanford Observatory (H1) and\nLIGO Livingston Observatory (L1) at 2023-07-31 21:53:07.889 UTC (GPS\ntime: 1374875605.889). The candidate was found by the CWB [1], MBTA\n[2], GstLAL [3], PyCBC Live [4], and SPIIR [5] analysis pipelines.\n\nS230731an 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/S230731an\n\nThe classification of the GW signal, in order of descending\nprobability, is BBH (70%), NSBH (15%), Terrestrial (15%), or BNS\n(<1%).\n\nAssuming the candidate is astrophysical in origin, the probability\nthat the lighter compact object is consistent with a neutron star mass\n(HasNS) is <1%. [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 5%.\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 646\ndeg2. Marginalized over the whole sky, the a posteriori luminosity\ndistance estimate is 1056 +/- 279 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] Aubin et al. CQG 38, 095004 (2021)\n [3] Tsukada et al. arXiv:2305.06286 (2023) and Ewing et al.\narXiv:2305.05625 (2023)\n [4] Dal Canton et al. ApJ 923, 254 (2021)\n [5] Chu et al. PRD 105, 024023 (2022)\n [6] Chatterjee et al. ApJ 896, 54 (2020)\n [7] Singer & Price PRD 93, 024013 (2016)\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjkwODQyMTUwLCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.-Hjcf58CxPOGn5Md5q6m1YAUvSOiDwsvRwJ3kz_VJOE\n\n",
"published": "2023-07-31T22:22:35.423033Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-07-31T22:22:35.423049Z",
"modified": "2023-07-31T22:22:35.429419Z",
"nonlocalizedevents": [
{
"event_id": "S230731a"
}
],
"targets": []
},
{
"id": 1704,
"topic": "igwn.gwalert",
"uuid": "7b22bf56-52ce-43a0-b453-8f697863af78",
"title": "S230731at - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230731at/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230731at/view/"
},
"event": {
"far": 1.50667485532171e-05,
"time": "2023-07-31T22:49:19.315Z",
"group": "CBC",
"search": "AllSky",
"area_50": 436.4851513626325,
"area_90": 1976.5365344722982,
"duration": null,
"pipeline": "pycbc",
"properties": {
"HasNS": 1.0,
"HasMassGap": 0.7235932199831788,
"HasRemnant": 0.003303584433583724
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "943ddc12c47c7cae9deaafc111af3b52",
"classification": {
"BBH": 0.0,
"BNS": 0.000629794632047586,
"NSBH": 0.0008186365117828219,
"Terrestrial": 0.9985515688561696
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-07-31T22:49:55Z",
"superevent_id": "S230731at",
"external_coinc": null
},
"message_text": "",
"published": "2023-07-31T22:49:57.595839Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-07-31T22:49:57.595861Z",
"modified": "2023-07-31T22:49:57.604227Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1705,
"topic": "igwn.gwalert",
"uuid": "be3dc109-9023-4fab-be7c-3c91deaf86dd",
"title": "S230731at - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230731at/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230731at/view/"
},
"event": {
"far": 1.50667485532171e-05,
"time": "2023-07-31T22:49:19.315Z",
"group": "CBC",
"search": "AllSky",
"area_50": 436.4851513626325,
"area_90": 1976.5365344722982,
"duration": null,
"pipeline": "pycbc",
"properties": {
"HasNS": 1.0,
"HasMassGap": 0.7235932199831788,
"HasRemnant": 0.003303584433583724
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "943ddc12c47c7cae9deaafc111af3b52",
"classification": {
"BBH": 0.0,
"BNS": 0.000629794632047586,
"NSBH": 0.0008186365117828219,
"Terrestrial": 0.9985515688561696
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-07-31T22:54:35Z",
"superevent_id": "S230731at",
"external_coinc": null
},
"message_text": "",
"published": "2023-07-31T22:54:37.227316Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-07-31T22:54:37.227338Z",
"modified": "2023-07-31T22:54:37.233714Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 9095,
"topic": "igwn.gwalert",
"uuid": "bf7f9891-0ed7-48f3-a07f-6b390f3b0ae7",
"title": "S240523bw - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S240523bw/files/bayestar.multiorder.fits,1",
"gracedb": "https://gracedb.ligo.org/superevents/S240523bw/view/"
},
"event": {
"far": 7.629582448268387e-06,
"time": "2024-05-23T13:42:17.907Z",
"group": "CBC",
"search": "AllSky",
"area_50": 732.0738820354404,
"area_90": 5263.2104491192285,
"duration": null,
"pipeline": "gstlal",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.012712917913729273,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1",
"V1"
],
"significant": false,
"skymap_hash": "6fc98bb5c5619c967f043b5d06940f29",
"classification": {
"BBH": 0.18168924333037803,
"BNS": 1.060803549021788e-15,
"NSBH": 7.006845582639645e-14,
"Terrestrial": 0.8183107566695509
},
"skymap_version": 1,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2024-05-23T13:47:32Z",
"superevent_id": "S240523bw",
"external_coinc": null
},
"message_text": "",
"published": "2024-05-23T13:47:33.320276Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2024-05-23T13:47:33.320300Z",
"modified": "2024-05-23T13:47:33.327153Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1711,
"topic": "igwn.gwalert",
"uuid": "8bd0197d-bb70-4c68-8c0a-42515ce0e86a",
"title": "S230801i - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230801i/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230801i/view/"
},
"event": {
"far": 2.956904043734635e-06,
"time": "2023-08-01T01:41:33.335Z",
"group": "CBC",
"search": "AllSky",
"area_50": 381.354050042824,
"area_90": 1408.7543834869437,
"duration": null,
"pipeline": "pycbc",
"properties": {
"HasNS": 0.05089545247732866,
"HasMassGap": 0.2011642867388762,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "2b411933194b9cb545777c4d3fa77bd7",
"classification": {
"BBH": 0.08446254976119535,
"BNS": 0.0,
"NSBH": 0.060917385992370336,
"Terrestrial": 0.8546200642464343
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-08-01T01:42:02Z",
"superevent_id": "S230801i",
"external_coinc": null
},
"message_text": "",
"published": "2023-08-01T01:42:03.757299Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-08-01T01:42:03.757319Z",
"modified": "2023-08-01T01:42:03.763204Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 3274,
"topic": "hermes.message",
"uuid": "4be14f73-a874-4a6e-9330-a3fe9b26ea2a",
"title": "INTEGRAL follow-up of S230816ac",
"submitter": "Volodymyr Savchenko",
"authors": "",
"data": {},
"message_text": "INTEGRAL follow-up of S230816ac at 2023-08-16T12:09:34.000\n\n\nSPI-ACS excesses:\nat T0+-16.25 FAP = 0.1\nat T0+37.78 FAP = 0.306\nat T0+-64.35 FAP = 0.447\nat T0+135.6 FAP = 0.541\nat T0+-67.27 FAP = 0.589\nat T0+12.13 FAP = 0.891\nat T0+184.38 FAP = 0.999\n\n\n\n\nnext break in data in 47 hr: 2023-08-18T11:16:02, for 9.3 hr",
"published": "2023-09-21T21:38:15.187172Z",
"message_parser": "Hermes Message Parser v2",
"retracted": false,
"created": "2023-09-21T21:38:15.187192Z",
"modified": "2023-09-21T21:38:15.194367Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1706,
"topic": "gcn.circular",
"uuid": "004b23f8-6b0c-4488-83ba-61c92852e27a",
"title": "LIGO/Virgo/KAGRA S230731an: Coverage and upper limits from MAXI/GSC observations",
"submitter": "Hop gcn.circular",
"authors": "Satoshi Sugita at Aoyama Gakuin U. <sugita@phys.aoyama.ac.jp>",
"data": {
"date": "23/07/31 23:47:05 GMT",
"from": "Satoshi Sugita at Aoyama Gakuin U. <sugita@phys.aoyama.ac.jp>",
"title": "GCN CIRCULAR",
"number": "34304",
"subject": "LIGO/Virgo/KAGRA S230731an: Coverage and upper limits from MAXI/GSC observations"
},
"message_text": "M. Nakajima, H. Negoro, (Nihon U.),\nT. Mihara, N. Kawai (RIKEN),\nS. Sugita, M. Serino, H. Hiramatsu, H. Nishikawa, Y. Kondo (AGU),\nY. Kawakubo (LSU)\nreport on behalf of the MAXI team:\n\nWe examined MAXI/GSC all-sky X-ray images (2-20 keV)\nafter compact binary merger candidate S230731an at 2023-07-31 21:53:07\nUTC (GCN 34303).\n\nAt the trigger time of S230731an, the high-voltage of MAXI/GSC was off,\nand it was turned on at T0+628 sec (+10.5 min).\nThe first one-orbit (92 min) scan observation with GSC after the event\ncovered 95%\nof the 90% credible region of the bayestar skymap from 22:03:35 to\n23:07:43 UTC (T0+628 to T0+4476 sec).\n\nNo significant new source was found in the region in the one-orbit\nscan observation.\nA typical 1-sigma averaged upper limit obtained in one scan observation\nis 20 mCrab at 2-20 keV.\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjkwODQ3MjMxLCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.2XC1V5mgX84oDco_6L3Ypmxd71ljdygnnmTuzfqOPRI\n\n",
"published": "2023-07-31T23:47:16.044291Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-07-31T23:47:16.044318Z",
"modified": "2023-07-31T23:47:16.052954Z",
"nonlocalizedevents": [
{
"event_id": "S230731a"
}
],
"targets": []
},
{
"id": 1707,
"topic": "gcn.circular",
"uuid": "8423dc32-a98d-42d9-adc9-a73d2f288023",
"title": "GRB 230731A: 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": "23/07/31 23:49:46 GMT",
"from": "Fermi GBM Team at MSFC/Fermi-GBM <do_not_reply@GIOC.nsstc.nasa.gov>",
"title": "GCN CIRCULAR",
"number": "34305",
"subject": "GRB 230731A: Fermi GBM Final Real-time Localization"
},
"message_text": "The Fermi GBM team reports the detection of a likely LONG GRB\n\nAt 23:39:16 UT on 31 Jul 2023, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 230731A (trigger 712539561.432998 / 230731986).\n\nThe on-ground calculated location, using the Fermi GBM trigger data, is RA = 237.3, Dec = -58.9 (J2000 degrees, equivalent to J2000 15h 49m, -58d 53'), with a statistical uncertainty of 8.3 degrees.\n\nThe angle from the Fermi LAT boresight is 111.0 degrees.\n\nThe skymap can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn230731986/quicklook/glg_skymap_all_bn230731986.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/bn230731986/quicklook/glg_healpix_all_bn230731986.fit\n\nThe GBM light curve can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn230731986/quicklook/glg_lc_medres34_bn230731986.gif\n\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjkwODQ3Mzg4LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.JQjGm3ufMdDMuxY_DGnnC3M_mXdbcSDwaL0f-0FrQ4w\n\n",
"published": "2023-07-31T23:49:53.431827Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-07-31T23:49:53.431844Z",
"modified": "2023-07-31T23:49:53.438148Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1708,
"topic": "igwn.gwalert",
"uuid": "2ab03548-405a-4bbb-8f7d-fd9f896706bf",
"title": "S230731an - UPDATE",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230731an/files/bayestar.multiorder.fits,2",
"gracedb": "https://gracedb.ligo.org/superevents/S230731an/view/"
},
"event": {
"far": 3.167545842243851e-10,
"time": "2023-07-31T21:53:07.889Z",
"group": "CBC",
"search": "AllSky",
"area_50": 170.16678656656407,
"area_90": 598.4163690355621,
"duration": null,
"pipeline": "pycbc",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.002927927927927928,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": true,
"skymap_hash": "fbbe34475099a70ca4e356a28bf5737d",
"classification": {
"BBH": 0.8139519908482554,
"BNS": 0.0,
"NSBH": 0.1838623882504885,
"Terrestrial": 0.002185620901256069
},
"skymap_version": 2,
"central_frequency": null
},
"alert_type": "UPDATE",
"sequence_num": 4,
"time_created": "2023-08-01T00:58:04Z",
"superevent_id": "S230731an",
"external_coinc": null
},
"message_text": "",
"published": "2023-08-01T00:58:06.255957Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-08-01T00:58:06.255977Z",
"modified": "2023-08-01T00:58:06.263650Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1709,
"topic": "gcn.circular",
"uuid": "9965bee8-0cf2-470c-8497-44e684a8f38a",
"title": "LIGO/Virgo/KAGRA S230731an: Updated Sky Localization and EM Bright Classification, and Correction to Source Classification",
"submitter": "Hop gcn.circular",
"authors": "carl.haster@unlv.edu",
"data": {
"date": "23/08/01 01:24:15 GMT",
"from": "carl.haster@unlv.edu",
"title": "GCN CIRCULAR",
"number": "34306",
"subject": "LIGO/Virgo/KAGRA S230731an: Updated Sky Localization and EM Bright Classification, and Correction to Source Classification"
},
"message_text": "The LIGO Scientific Collaboration, the Virgo Collaboration, and the KAGRA Collaboration report:\n\nWe have conducted further analysis of the LIGO Hanford Observatory (H1) and LIGO Livingston Observatory (L1) data around the time of the compact binary merger (CBC) candidate S230731an (GCN Circular 34303). Parameter estimation has been performed using Bilby [1] and a new sky map, Bilby.multiorder.fits,0, distributed via GCN Notice, is available for retrieval from the GraceDB event page:\n\nhttps://gracedb.ligo.org/superevents/S230731an\n\nBased on posterior support from parameter estimation [1], under the assumption that the candidate S230731an is astrophysical in origin, the probability that the lighter compact object is consistent with a neutron star mass (HasNS) is <1%. [2] Using the masses and spins inferred from the signal, the probability of matter outside the final compact object (HasRemnant) is <1%. [2] Both HasNS and HasRemnant consider the support of several neutron star equations of state. The probability that either of the binary components lies between 3 and 5 solar masses (HasMassgap) is <1%.\n\nFor the Bilby.multiorder.fits,0 sky map, the 90% credible region is 599 deg2. Marginalized over the whole sky, the a posteriori luminosity distance estimate is 1001 +/- 242 Mpc (a posteriori mean +/- standard deviation).\n\nThe GCN Circular 34303 quoted incorrect values for the classification of the GW signal. These differ from the correct values found in the Initial Notice. The correct values from the Initial Notice are: BBH (81%), NSBH (18%), Terrestrial (<1%), or BNS (0%).\n\nFor further information about analysis methodology and the contents of this alert, refer to the LIGO/Virgo/KAGRA Public Alerts User Guide https://emfollow.docs.ligo.org/userguide/.\n\n\n [1] Ashton et al. ApJS 241, 27 (2019)\n [2] Chatterjee et al. ApJ 896, 54 (2020)\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjkwODUzMDYxLCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.TRKmOp2xrLMY5fMhIoYawFinihrPDRZv53AeCr-CzJ8\n\n",
"published": "2023-08-01T01:24:26.525932Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-08-01T01:24:26.525950Z",
"modified": "2023-08-01T01:24:26.534031Z",
"nonlocalizedevents": [
{
"event_id": "S230731a"
}
],
"targets": []
},
{
"id": 1710,
"topic": "igwn.gwalert",
"uuid": "e25067ee-6370-4c12-ba60-8d5f3364ceb6",
"title": "S230801h - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230801h/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230801h/view/"
},
"event": {
"far": 1.745817e-05,
"time": "2023-08-01T01:41:02.072Z",
"group": "CBC",
"search": "AllSky",
"area_50": 596.1083115112315,
"area_90": 2436.4694520480175,
"duration": null,
"pipeline": "MBTA",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.09443593613618687,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "f443e832086d8553055fd5ef7fe9628c",
"classification": {
"BBH": 0.0291975,
"BNS": 0.0,
"NSBH": 1.31e-06,
"Terrestrial": 0.970801189
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-08-01T01:41:36Z",
"superevent_id": "S230801h",
"external_coinc": null
},
"message_text": "",
"published": "2023-08-01T01:41:36.676973Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-08-01T01:41:36.676992Z",
"modified": "2023-08-01T01:41:36.684789Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 2666,
"topic": "igwn.gwalert",
"uuid": "4c89e2c1-8b91-4bc9-bae2-ef011c767eaa",
"title": "S230902au - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230902au/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230902au/view/"
},
"event": {
"far": 1.122017132478212e-05,
"time": "2023-09-02T17:24:30.753Z",
"group": "CBC",
"search": "AllSky",
"area_50": 489.6229302750645,
"area_90": 1746.5700756844385,
"duration": null,
"pipeline": "gstlal",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.10969766605591143,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "c301a51432155db2e912bf217115d3d1",
"classification": {
"BBH": 0.15199985106618974,
"BNS": 3.0161490920904485e-16,
"NSBH": 7.275372458181478e-11,
"Terrestrial": 0.8480001488610562
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-09-02T17:24:53Z",
"superevent_id": "S230902au",
"external_coinc": null
},
"message_text": "",
"published": "2023-09-02T17:24:55.354988Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-09-02T17:24:55.355007Z",
"modified": "2023-09-02T17:24:55.359757Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 9096,
"topic": "lvk-users.beccatest",
"uuid": "09e6ed54-d237-4f17-a5cd-f798931b15e6",
"title": "Generic Message",
"submitter": "",
"authors": "",
"data": {
"ifo": [
"H1"
],
"time": [
1400507300
],
"range": 150.73637267449803
},
"message_text": "",
"published": "2024-05-23T13:48:18.420610Z",
"message_parser": "",
"retracted": false,
"created": "2024-05-23T13:48:18.420630Z",
"modified": "2024-05-23T13:48:18.420638Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 9097,
"topic": "lvk-users.beccatest",
"uuid": "2d021470-1b1d-4ee6-8fec-48c590f2ae3c",
"title": "Generic Message",
"submitter": "",
"authors": "",
"data": {
"ifo": [
"L1"
],
"time": [
1400507300
],
"range": 166.70802251766892
},
"message_text": "",
"published": "2024-05-23T13:48:20.436389Z",
"message_parser": "",
"retracted": false,
"created": "2024-05-23T13:48:20.436409Z",
"modified": "2024-05-23T13:48:20.436417Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 9098,
"topic": "lvk-users.beccatest",
"uuid": "bc3a535a-6562-4fd7-be72-64249ce65d40",
"title": "Generic Message",
"submitter": "",
"authors": "",
"data": {
"ifo": [
"V1"
],
"time": [
1400507300
],
"range": 50.1382038017076
},
"message_text": "",
"published": "2024-05-23T13:48:26.459144Z",
"message_parser": "",
"retracted": false,
"created": "2024-05-23T13:48:26.459162Z",
"modified": "2024-05-23T13:48:26.459171Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1712,
"topic": "igwn.gwalert",
"uuid": "24cc8938-1b3f-4138-8690-a5943e693bc3",
"title": "S230801h - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230801h/files/bayestar.multiorder.fits,1",
"gracedb": "https://gracedb.ligo.org/superevents/S230801h/view/"
},
"event": {
"far": 1.15504559137422e-05,
"time": "2023-08-01T01:41:02.087Z",
"group": "CBC",
"search": "AllSky",
"area_50": 661.7830392490051,
"area_90": 2581.6672526695493,
"duration": null,
"pipeline": "pycbc",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.1149859971862479,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "dad816852aa4936d67fbfa5cc8e78b28",
"classification": {
"BBH": 0.21143964120112815,
"BNS": 0.0,
"NSBH": 0.0,
"Terrestrial": 0.7885603587988719
},
"skymap_version": 1,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-08-01T01:46:11Z",
"superevent_id": "S230801h",
"external_coinc": null
},
"message_text": "",
"published": "2023-08-01T01:46:12.400721Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-08-01T01:46:12.400743Z",
"modified": "2023-08-01T01:46:12.407005Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1713,
"topic": "igwn.gwalert",
"uuid": "0f411851-ff95-4508-8628-5c4d03ef3e43",
"title": "S230801i - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230801i/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230801i/view/"
},
"event": {
"far": 2.956904043734635e-06,
"time": "2023-08-01T01:41:33.335Z",
"group": "CBC",
"search": "AllSky",
"area_50": 381.354050042824,
"area_90": 1408.7543834869437,
"duration": null,
"pipeline": "pycbc",
"properties": {
"HasNS": 0.05089545247732866,
"HasMassGap": 0.2011642867388762,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "2b411933194b9cb545777c4d3fa77bd7",
"classification": {
"BBH": 0.08446254976119535,
"BNS": 0.0,
"NSBH": 0.060917385992370336,
"Terrestrial": 0.8546200642464343
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-08-01T01:46:37Z",
"superevent_id": "S230801i",
"external_coinc": null
},
"message_text": "",
"published": "2023-08-01T01:46:38.523168Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-08-01T01:46:38.523188Z",
"modified": "2023-08-01T01:46:38.528955Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1714,
"topic": "gcn.circular",
"uuid": "62e4cf00-06f1-424c-b795-19f4bf9324d3",
"title": "LIGO/Virgo/KAGRA S230731an: not observable by Fermi-GBM",
"submitter": "Hop gcn.circular",
"authors": "Sarah Dalessi at UAH <sd0104@uah.edu>",
"data": {
"date": "23/08/01 02:03:51 GMT",
"from": "Sarah Dalessi at UAH <sd0104@uah.edu>",
"title": "GCN CIRCULAR",
"number": "34307",
"subject": "LIGO/Virgo/KAGRA S230731an: not observable by Fermi-GBM"
},
"message_text": "S. Dalessi (UAH) reports on behalf of the Fermi-GBM Team:\n\nAt the time of LVK S230731an, Fermi was passing through the South Atlantic Anomaly from 12.6 minutes prior to 5.7 minutes after the trigger time; therefore the GBM detectors were disabled.\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjkwODU1NDM2LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.abx7FeUOsoK7vvFXdyPzzGmcHZZb54S1eXjjHVggXUU\n\n",
"published": "2023-08-01T02:04:02.153974Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-08-01T02:04:02.153994Z",
"modified": "2023-08-01T02:04:02.161932Z",
"nonlocalizedevents": [
{
"event_id": "S230731a"
}
],
"targets": []
},
{
"id": 1715,
"topic": "igwn.gwalert",
"uuid": "8b2ed01c-7135-44af-9fe5-9b05a0129d8d",
"title": "S230801x - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230801x/files/cwb.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230801x/view/"
},
"event": {
"far": 1.63737e-05,
"time": "2023-08-01T06:39:41.832Z",
"group": "Burst",
"search": "BBH",
"area_50": 2338.272095558311,
"area_90": 8871.333829882036,
"duration": 0.026689,
"pipeline": "CWB",
"properties": {},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "79a9cf84529b6bfa71203915ad6a4bfc",
"classification": {},
"skymap_version": 0,
"central_frequency": 30.50102
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-08-01T06:41:23Z",
"superevent_id": "S230801x",
"external_coinc": null
},
"message_text": "",
"published": "2023-08-01T06:41:24.065414Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-08-01T06:41:24.065437Z",
"modified": "2023-08-01T06:41:24.074783Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1716,
"topic": "gcn.circular",
"uuid": "30f40547-7753-40a6-a225-0908ff2ad81a",
"title": "LIGO/Virgo/KAGRA S230731an: AstroSat CZTI non-detection and upper limits",
"submitter": "Hop gcn.circular",
"authors": "Gaurav Waratkar at IIT Bombay <gauravwaratkar@iitb.ac.in>",
"data": {
"date": "23/08/01 06:45:02 GMT",
"from": "Gaurav Waratkar at IIT Bombay <gauravwaratkar@iitb.ac.in>",
"title": "GCN CIRCULAR",
"number": "34308",
"subject": "LIGO/Virgo/KAGRA S230731an: AstroSat CZTI non-detection and upper limits"
},
"message_text": "G. Waratkar (IITB), V. Bhalerao (IITB), M. Dixit (IITB), D. Bhattacharya (Ashoka University/IUCAA), A. R. Rao (TIFR), S. Vadawale (PRL) report on behalf of the AstroSat CZTI collaboration:\n\nWe have carried out a search for X-ray candidates in Astrosat CZTI data in a 100-sec window around the trigger time of the event S230731an (UTC 2023-07-31 21:53:07, GraceDB event). We use the Bilby.multiorder.fits,0 map (https://gracedb.ligo.org/api/superevents/S230731an/files/Bilby.multiorder.fits,0) for our analysis. CZTI is a coded aperture mask instrument that has a considerable effective area for about 29% of the entire sky but is also sensitive to brighter transients from the entire sky. At the time of the merger, Astrosat's nominal pointing is RA, DEC = 00:47:41.1, 85:07:31.0 (11.9212,85.1253), which is ~60 deg away from the maximum probability location. At the time of the merger event, the Earth-satellite-transient angle corresponding to the maximum probability location is ~87 deg and hence is not occulted by Earth in the satellite's frame. In a time interval of 100 sec around the event, the region of the localization map which is not occulted by Earth in the satellite's frame has a total probability of 0.93 (93%) of containing the source.\n\nCZTI data were de-trended to remove orbit-wise background variation. We then searched data from the four independent, identical quadrants to look for coincident spikes in the count rates. Searches were undertaken by binning the data in 0.1s, 1s, and 10s respectively. Statistical fluctuations in background count rates were estimated by using data from 5 preceding orbits. We selected confidence levels such that the probability of a false trigger in a 100-sec window is 10^-4. We do not find any evidence for any hard X-ray transient in this window, in the CZTI energy range of 20-200 keV.\n\nWe use a detailed mass model of the satellite to calculate the direction-dependent instrument response for points in the visible sky. We then assume the source is modeled as a power law with photon index alpha = -1, and convert our count rate upper limits to direction-dependent flux limits. We obtain the following upper limits for source flux in the 20-200 keV band by taking a probability-weighted mean over the visible sky:\n\n0.1 s: flux limit= 1.18e-05 ergs/cm^2/s; fluence limit = 1.18e-06 ergs/cm^2\n1.0 s: flux limit= 2.30e-06 ergs/cm^2/s; fluence limit = 2.30e-06 ergs/cm^2\n10.0 s: flux limit= 2.74e-07 ergs/cm^2/s; fluence limit = 2.74e-06 ergs/cm^2\n\nCZTI is built by a TIFR-led consortium of institutes across India, including VSSC, URSC, IUCAA, SAC, and PRL. The Indian Space Research Organisation funded, managed, and facilitated the project.\n\nCZTI GRB detections are reported regularly on the payload site at:\nhttp://astrosat.iucaa.in/czti/?q=emgw\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjkwODcyMzA3LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.rmCjILKDGQema86iob27KFLHM6FrO0wHbmKspla7L00\n\n",
"published": "2023-08-01T06:45:16.752211Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-08-01T06:45:16.752229Z",
"modified": "2023-08-01T06:45:16.758637Z",
"nonlocalizedevents": [
{
"event_id": "S230731a"
}
],
"targets": []
},
{
"id": 1717,
"topic": "igwn.gwalert",
"uuid": "0d68dfc8-b947-4909-80d4-7a7aa72b08b5",
"title": "S230801x - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230801x/files/cwb.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230801x/view/"
},
"event": {
"far": 1.63737e-05,
"time": "2023-08-01T06:39:41.832Z",
"group": "Burst",
"search": "BBH",
"area_50": 2338.272095558311,
"area_90": 8871.333829882036,
"duration": 0.026689,
"pipeline": "CWB",
"properties": {},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "79a9cf84529b6bfa71203915ad6a4bfc",
"classification": {},
"skymap_version": 0,
"central_frequency": 30.50102
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-08-01T06:45:56Z",
"superevent_id": "S230801x",
"external_coinc": null
},
"message_text": "",
"published": "2023-08-01T06:45:57.877406Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-08-01T06:45:57.877429Z",
"modified": "2023-08-01T06:45:57.884053Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1718,
"topic": "hermes.message",
"uuid": "0ba304fe-78d1-4a87-87da-7ec473cedcf8",
"title": "INTEGRAL follow-up of S230731an",
"submitter": "Volodymyr Savchenko",
"authors": "",
"data": {},
"message_text": "INTEGRAL follow-up of S230731an at 2023-07-31T21:53:07.000\n\n\nSPI-ACS excesses:\nat T0+1.25 FAP = 0.085\nat T0+-63.15 FAP = 0.175\nat T0+92.75 FAP = 0.508\nat T0+196.25 FAP = 0.764\nat T0+-68.08 FAP = 0.808\nat T0+150.25 FAP = 0.813\n\n\n\n\nnext break in data in 38 hr: 2023-08-02T12:11:10, for about 9 hr",
"published": "2023-08-01T09:18:09.046363Z",
"message_parser": "Hermes Message Parser v2",
"retracted": false,
"created": "2023-08-01T09:18:09.046380Z",
"modified": "2023-08-01T09:18:09.054592Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 9099,
"topic": "lvk-users.beccatest",
"uuid": "a1766950-bfb0-471d-bcb4-03d930719440",
"title": "Generic Message",
"submitter": "",
"authors": "",
"data": {
"ifo": [
"H1"
],
"time": [
1400507400
],
"range": 150.54154989264566
},
"message_text": "",
"published": "2024-05-23T13:49:59.852174Z",
"message_parser": "",
"retracted": false,
"created": "2024-05-23T13:49:59.852196Z",
"modified": "2024-05-23T13:49:59.852205Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 3275,
"topic": "hermes.message",
"uuid": "a0e03967-a31a-4d76-bae0-626f32a4ea3e",
"title": "INTEGRAL follow-up of S230823x",
"submitter": "Volodymyr Savchenko",
"authors": "",
"data": {},
"message_text": "INTEGRAL follow-up of S230823x at 2023-08-23T05:52:28.000\n\n\nSPI-ACS excesses:\nat T0+5.63 FAP = 0.05\nat T0+70.2 FAP = 0.088\nat T0+26.38 FAP = 0.148\nat T0+-54.47 FAP = 0.327\nat T0+85.56 FAP = 0.381\nat T0+80.69 FAP = 0.401\nat T0+75.82 FAP = 0.401\nat T0+125.09 FAP = 0.571\nat T0+49.09 FAP = 0.596\nat T0+-132.65 FAP = 0.63\nat T0+66.34 FAP = 0.657\nat T0+178.98 FAP = 0.667\nat T0+-24.82 FAP = 0.722\nat T0+114.88 FAP = 0.748\nat T0+90.44 FAP = 0.786\nat T0+83.13 FAP = 0.795\nat T0+133.93 FAP = 0.823\nat T0+121.23 FAP = 0.91\n\n\n\n\nnext break in data in 13 hr: 2023-08-23T18:56:26, for 9.3 hr",
"published": "2023-09-21T21:42:56.700575Z",
"message_parser": "Hermes Message Parser v2",
"retracted": false,
"created": "2023-09-21T21:42:56.700606Z",
"modified": "2023-09-21T21:42:56.707242Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 3276,
"topic": "hermes.message",
"uuid": "92b56aac-143c-4b4b-9244-c884e2cfa1ef",
"title": "INTEGRAL follow-up of S230912y",
"submitter": "Volodymyr Savchenko",
"authors": "",
"data": {},
"message_text": "INTEGRAL follow-up of S230912y at 2023-09-12T11:42:14.000\n\n\nSPI-ACS excesses:\nat T0+9.76 FAP = 0.008\nat T0+-4.77 FAP = 0.087\nat T0+-60.59 FAP = 0.316\nat T0+-41.99 FAP = 0.57\nat T0+66.86 FAP = 0.571\nat T0+70.13 FAP = 0.866\n\n\n\n\nnext break in data in 37 hr: 2023-09-14T00:36:03, for 10 hr",
"published": "2023-09-21T21:48:53.320450Z",
"message_parser": "Hermes Message Parser v2",
"retracted": false,
"created": "2023-09-21T21:48:53.320469Z",
"modified": "2023-09-21T21:48:53.326799Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 9100,
"topic": "lvk-users.beccatest",
"uuid": "b87202e7-f911-4b30-b4e0-daca2f846503",
"title": "Generic Message",
"submitter": "",
"authors": "",
"data": {
"ifo": [
"L1"
],
"time": [
1400507400
],
"range": 166.65867140762933
},
"message_text": "",
"published": "2024-05-23T13:49:59.864829Z",
"message_parser": "",
"retracted": false,
"created": "2024-05-23T13:49:59.864848Z",
"modified": "2024-05-23T13:49:59.864856Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1719,
"topic": "igwn.gwalert",
"uuid": "fab320cc-b600-4861-b172-7cf304ed8e30",
"title": "S230801ab - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230801ab/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230801ab/view/"
},
"event": {
"far": 2.140585797466747e-05,
"time": "2023-08-01T09:20:52.559Z",
"group": "CBC",
"search": "AllSky",
"area_50": 831.5301789929638,
"area_90": 3863.268648907002,
"duration": null,
"pipeline": "gstlal",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.004106583072100313,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "18be484b077f04e9b524fbb4fa3debd5",
"classification": {
"BBH": 0.07200054239025262,
"BNS": 1.0645529157407896e-13,
"NSBH": 7.402544506292701e-12,
"Terrestrial": 0.9279994576022383
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-08-01T09:21:16Z",
"superevent_id": "S230801ab",
"external_coinc": null
},
"message_text": "",
"published": "2023-08-01T09:21:17.606503Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-08-01T09:21:17.606540Z",
"modified": "2023-08-01T09:21:17.612895Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1720,
"topic": "igwn.gwalert",
"uuid": "b858c57b-ee34-4c01-95f5-6901099227fb",
"title": "S230801ab - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230801ab/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230801ab/view/"
},
"event": {
"far": 2.140585797466747e-05,
"time": "2023-08-01T09:20:52.559Z",
"group": "CBC",
"search": "AllSky",
"area_50": 831.5301789929638,
"area_90": 3863.268648907002,
"duration": null,
"pipeline": "gstlal",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.004106583072100313,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
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"skymap_hash": "18be484b077f04e9b524fbb4fa3debd5",
"classification": {
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"BNS": 1.0645529157407896e-13,
"NSBH": 7.402544506292701e-12,
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},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-08-01T09:25:54Z",
"superevent_id": "S230801ab",
"external_coinc": null
},
"message_text": "",
"published": "2023-08-01T09:25:56.136757Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-08-01T09:25:56.136785Z",
"modified": "2023-08-01T09:25:56.144199Z",
"nonlocalizedevents": [],
"targets": []
}
]
}
