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{
"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": 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,
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"significant": false,
"skymap_hash": "f443e832086d8553055fd5ef7fe9628c",
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"BNS": 0.0,
"NSBH": 1.31e-06,
"Terrestrial": 0.970801189
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},
"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": 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/"
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"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": {
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"significant": false,
"skymap_hash": "2b411933194b9cb545777c4d3fa77bd7",
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"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": 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",
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"area_50": 661.7830392490051,
"area_90": 2581.6672526695493,
"duration": null,
"pipeline": "pycbc",
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"NSBH": 0.0,
"Terrestrial": 0.7885603587988719
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"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": {
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"HasMassGap": 0.2011642867388762,
"HasRemnant": 0.0
},
"instruments": [
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"significant": false,
"skymap_hash": "2b411933194b9cb545777c4d3fa77bd7",
"classification": {
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"BNS": 0.0,
"NSBH": 0.060917385992370336,
"Terrestrial": 0.8546200642464343
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"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": [
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"L1"
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"significant": false,
"skymap_hash": "79a9cf84529b6bfa71203915ad6a4bfc",
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"skymap_version": 0,
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"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": [
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"significant": false,
"skymap_hash": "79a9cf84529b6bfa71203915ad6a4bfc",
"classification": {},
"skymap_version": 0,
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},
"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": 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": {
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"HasMassGap": 0.004106583072100313,
"HasRemnant": 0.0
},
"instruments": [
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],
"significant": false,
"skymap_hash": "18be484b077f04e9b524fbb4fa3debd5",
"classification": {
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"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"
],
"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": 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": []
},
{
"id": 1721,
"topic": "igwn.gwalert",
"uuid": "4dc6a8b4-8124-485b-ab80-a8ee870dd832",
"title": "S230801ad - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230801ad/files/cwb.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230801ad/view/"
},
"event": {
"far": 1.28694e-05,
"time": "2023-08-01T09:35:46.778Z",
"group": "Burst",
"search": "AllSky",
"area_50": 825.2354766538799,
"area_90": 3760.6650007799367,
"duration": 0.007904,
"pipeline": "CWB",
"properties": {},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "66023d572372e8b7045256447f4e7f1f",
"classification": {},
"skymap_version": 0,
"central_frequency": 1580.073486
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-08-01T09:38:07Z",
"superevent_id": "S230801ad",
"external_coinc": null
},
"message_text": "",
"published": "2023-08-01T09:38:09.538910Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-08-01T09:38:09.538930Z",
"modified": "2023-08-01T09:38:09.545316Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1722,
"topic": "igwn.gwalert",
"uuid": "44081181-bfb8-4fa7-bed1-0fb827707d68",
"title": "S230801ad - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
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"gracedb": "https://gracedb.ligo.org/superevents/S230801ad/view/"
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"event": {
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"time": "2023-08-01T09:35:46.778Z",
"group": "Burst",
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"classification": {},
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"time_created": "2023-08-01T09:42:44Z",
"superevent_id": "S230801ad",
"external_coinc": null
},
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"published": "2023-08-01T09:42:46.249101Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-08-01T09:42:46.249123Z",
"modified": "2023-08-01T09:42:46.255351Z",
"nonlocalizedevents": [],
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},
{
"id": 1723,
"topic": "igwn.gwalert",
"uuid": "f94f6fd2-f088-4b1e-9f4a-1749df333409",
"title": "S230801ag - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230801ag/files/bayestar.multiorder.fits,0",
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"event": {
"far": 1.830533983593341e-05,
"time": "2023-08-01T10:22:07.398Z",
"group": "CBC",
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"area_50": 662.6223328942162,
"area_90": 2925.7776472061278,
"duration": null,
"pipeline": "spiir",
"properties": {
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"NSBH": 0.06753957743378754,
"Terrestrial": 0.909156496472892
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"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-08-01T10:22:34Z",
"superevent_id": "S230801ag",
"external_coinc": null
},
"message_text": "",
"published": "2023-08-01T10:22:35.590797Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-08-01T10:22:35.590828Z",
"modified": "2023-08-01T10:22:35.599756Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1724,
"topic": "igwn.gwalert",
"uuid": "c9ac81cd-6730-46e8-9970-1a2272f2e4b1",
"title": "S230801ag - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
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"gracedb": "https://gracedb.ligo.org/superevents/S230801ag/view/"
},
"event": {
"far": 1.830533983593341e-05,
"time": "2023-08-01T10:22:07.398Z",
"group": "CBC",
"search": "AllSky",
"area_50": 662.6223328942162,
"area_90": 2925.7776472061278,
"duration": null,
"pipeline": "spiir",
"properties": {
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"HasMassGap": 0.40199515392987,
"HasRemnant": 0.0
},
"instruments": [
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"L1"
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"significant": false,
"skymap_hash": "9c263e67f407a255feaab87686b8baf2",
"classification": {
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"BNS": 0.0,
"NSBH": 0.06753957743378754,
"Terrestrial": 0.909156496472892
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"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-08-01T10:27:08Z",
"superevent_id": "S230801ag",
"external_coinc": null
},
"message_text": "",
"published": "2023-08-01T10:27:09.302003Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-08-01T10:27:09.302034Z",
"modified": "2023-08-01T10:27:09.309160Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1725,
"topic": "igwn.gwalert",
"uuid": "371ddf24-4bd2-48ca-9eab-a131da461600",
"title": "S230801ah - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230801ah/files/cwb.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230801ah/view/"
},
"event": {
"far": 1.4417e-05,
"time": "2023-08-01T10:30:30.500Z",
"group": "Burst",
"search": "BBH",
"area_50": 1091.081738774517,
"area_90": 3514.122492499156,
"duration": 0.018206,
"pipeline": "CWB",
"properties": {},
"instruments": [
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"L1"
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"significant": false,
"skymap_hash": "a5d27b90700ac898ca8ab0f64cd360e5",
"classification": {},
"skymap_version": 0,
"central_frequency": 40.214081
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"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-08-01T10:32:00Z",
"superevent_id": "S230801ah",
"external_coinc": null
},
"message_text": "",
"published": "2023-08-01T10:32:01.314968Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-08-01T10:32:01.315018Z",
"modified": "2023-08-01T10:32:01.321911Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1726,
"topic": "igwn.gwalert",
"uuid": "21630605-df7a-451b-b721-9023685095e1",
"title": "S230801ah - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230801ah/files/cwb.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230801ah/view/"
},
"event": {
"far": 1.4417e-05,
"time": "2023-08-01T10:30:30.500Z",
"group": "Burst",
"search": "BBH",
"area_50": 1091.081738774517,
"area_90": 3514.122492499156,
"duration": 0.018206,
"pipeline": "CWB",
"properties": {},
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"significant": false,
"skymap_hash": "a5d27b90700ac898ca8ab0f64cd360e5",
"classification": {},
"skymap_version": 0,
"central_frequency": 40.214081
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"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-08-01T10:36:36Z",
"superevent_id": "S230801ah",
"external_coinc": null
},
"message_text": "",
"published": "2023-08-01T10:36:37.854593Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-08-01T10:36:37.854613Z",
"modified": "2023-08-01T10:36:37.860541Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1727,
"topic": "hermes.message",
"uuid": "8de0b183-b477-42b9-83e7-09393d8f5258",
"title": "INTEGRAL follow-up of S230729y",
"submitter": "Volodymyr Savchenko",
"authors": "",
"data": {},
"message_text": "INTEGRAL follow-up of S230729y at 2023-07-29T08:23:14.000\n\n\nSPI-ACS excesses:\n\n\n\n\nnext break in data in 36 hr: 2023-07-30T20:18:34, for 9.2 hr",
"published": "2023-08-01T14:52:11.377843Z",
"message_parser": "Hermes Message Parser v2",
"retracted": false,
"created": "2023-08-01T14:52:11.377863Z",
"modified": "2023-08-01T14:52:11.386524Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1728,
"topic": "hermes.message",
"uuid": "b968c9ec-eb3a-4cdb-9a86-1353cdbc1a46",
"title": "INTEGRAL follow-up of S230729au",
"submitter": "Volodymyr Savchenko",
"authors": "",
"data": {},
"message_text": "INTEGRAL follow-up of S230729au at 2023-07-29T15:13:57.000\n\n\nSPI-ACS excesses:\nat T0+-2.6 FAP = 0.117\nat T0+-5.07 FAP = 0.325\nat T0+-76.62 FAP = 0.45\nat T0+-52.95 FAP = 0.456\nat T0+190.1 FAP = 0.618\nat T0+179.5 FAP = 0.802\n\n\n\n\nnext break in data in 29 hr: 2023-07-30T20:18:34, for 9.2 hr",
"published": "2023-08-01T15:31:27.210930Z",
"message_parser": "Hermes Message Parser v2",
"retracted": false,
"created": "2023-08-01T15:31:27.210985Z",
"modified": "2023-08-01T15:31:27.217488Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1729,
"topic": "hermes.message",
"uuid": "44b49423-eaa1-4b7f-a436-0a6eb7df1dc2",
"title": "INTEGRAL follow-up of S230730au",
"submitter": "Volodymyr Savchenko",
"authors": "",
"data": {},
"message_text": "INTEGRAL follow-up of S230730au at 2023-07-30T12:06:21.000\n\n\nSPI-ACS excesses:\nat T0+-4.42 FAP = 0.156\nat T0+16.35 FAP = 0.445\nat T0+53.68 FAP = 0.603\n\n\n\n\nnext break in data in 8.2 hr: 2023-07-30T20:18:34, for 9.2 hr",
"published": "2023-08-01T16:20:47.677826Z",
"message_parser": "Hermes Message Parser v2",
"retracted": false,
"created": "2023-08-01T16:20:47.677847Z",
"modified": "2023-08-01T16:20:47.685921Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1730,
"topic": "hermes.message",
"uuid": "6a6b27cf-1827-43a8-92e5-65e0c002bfe2",
"title": "INTEGRAL follow-up of S230729p",
"submitter": "Volodymyr Savchenko",
"authors": "",
"data": {},
"message_text": "INTEGRAL follow-up of S230729p at 2023-07-29T05:12:23.000\n\n\nSPI-ACS excesses:\n\n\n\n\nnext break in data in 39 hr: 2023-07-30T20:18:34, for 9.2 hr",
"published": "2023-08-01T17:41:42.994628Z",
"message_parser": "Hermes Message Parser v2",
"retracted": false,
"created": "2023-08-01T17:41:42.994645Z",
"modified": "2023-08-01T17:41:43.000702Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1731,
"topic": "hermes.message",
"uuid": "0d423527-8342-49cc-b5fd-356c8a30e386",
"title": "INTEGRAL follow-up of S230730a",
"submitter": "Volodymyr Savchenko",
"authors": "",
"data": {},
"message_text": "INTEGRAL follow-up of S230730a at 2023-07-30T00:04:23.000\n\n\nSPI-ACS excesses:\nat T0+-77.87 FAP = 0.511\nat T0+-90.57 FAP = 0.839\nat T0+-142.15 FAP = 0.975\n\n\n\n\nnext break in data in 20 hr: 2023-07-30T20:18:34, for 9.2 hr",
"published": "2023-08-01T18:38:50.067849Z",
"message_parser": "Hermes Message Parser v2",
"retracted": false,
"created": "2023-08-01T18:38:50.067874Z",
"modified": "2023-08-01T18:38:50.075925Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1732,
"topic": "hermes.message",
"uuid": "2a6853d8-9962-4618-b816-9a888db4e176",
"title": "INTEGRAL follow-up of S230729cf",
"submitter": "Volodymyr Savchenko",
"authors": "",
"data": {},
"message_text": "INTEGRAL follow-up of S230729cf at 2023-07-29T22:39:23.000\n\n\nSPI-ACS excesses:\n\n\n\n\nnext break in data in 22 hr: 2023-07-30T20:18:34, for 9.2 hr",
"published": "2023-08-01T19:13:53.319299Z",
"message_parser": "Hermes Message Parser v2",
"retracted": false,
"created": "2023-08-01T19:13:53.319316Z",
"modified": "2023-08-01T19:13:53.325491Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1733,
"topic": "hermes.message",
"uuid": "1f151886-b5c2-4d35-b040-b2a6b8c08007",
"title": "INTEGRAL follow-up of S230729be",
"submitter": "Volodymyr Savchenko",
"authors": "",
"data": {},
"message_text": "INTEGRAL follow-up of S230729be at 2023-07-29T17:13:36.000\n\n\nSPI-ACS excesses:\nat T0+-17.82 FAP = 0.04\nat T0+5.91 FAP = 0.059\nat T0+13.18 FAP = 0.151\nat T0+84.56 FAP = 0.214\nat T0+36.08 FAP = 0.229\nat T0+-87.19 FAP = 0.401\nat T0+-5.84 FAP = 0.43\nat T0+3.18 FAP = 0.558\nat T0+-6.79 FAP = 0.6\nat T0+58.16 FAP = 0.612\n\n\n\n\nnext break in data in 27 hr: 2023-07-30T20:18:34, for 9.2 hr",
"published": "2023-08-01T19:50:57.553090Z",
"message_parser": "Hermes Message Parser v2",
"retracted": false,
"created": "2023-08-01T19:50:57.553109Z",
"modified": "2023-08-01T19:50:57.562093Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1734,
"topic": "hermes.message",
"uuid": "4ca03610-e1ed-438b-adfa-8315404858db",
"title": "INTEGRAL follow-up of S230728d",
"submitter": "Volodymyr Savchenko",
"authors": "",
"data": {},
"message_text": "INTEGRAL follow-up of S230728d at 2023-07-28T00:24:23.000\n\n\nSPI-ACS excesses:\nat T0+155.9 FAP = 0.08\nat T0+-176.0 FAP = 0.267\nat T0+12.58 FAP = 0.652\n\n\n\n\nnext break in data in 2.9 hr: 2023-07-28T03:19:37, for 10 hr",
"published": "2023-08-01T20:02:09.063229Z",
"message_parser": "Hermes Message Parser v2",
"retracted": false,
"created": "2023-08-01T20:02:09.063262Z",
"modified": "2023-08-01T20:02:09.071265Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1735,
"topic": "gcn.circular",
"uuid": "7c5ae23b-0216-463b-8aea-1733c0ee4c84",
"title": "GRB 230723A: SPT-3G millimeter-band transient event inconsistent with IPN position",
"submitter": "Hop gcn.circular",
"authors": "Sam Guns at S Pole Telescope & UC Berkeley <sguns@berkeley.edu>",
"data": {
"date": "23/08/01 20:16:17 GMT",
"from": "Sam Guns at S Pole Telescope & UC Berkeley <sguns@berkeley.edu>",
"title": "GCN CIRCULAR",
"number": "34309",
"subject": "GRB 230723A: SPT-3G millimeter-band transient event inconsistent with IPN position"
},
"message_text": "S. Guns (UC Berkeley) on behalf of the South Pole Telescope Collaboration:\n\nIn light of the updated error box provided by IPN, the millimeter-band transient event reported by the South Pole Telescope in GCN #34301 is no longer spatially consistent with GRB 230723A (Fermi GBM, GCN #34232; IPN, GCN #34258). The event remains an unexplained, short-duration millimeter-band transient not obviously associated with any known galactic source.\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjkwOTIwOTgyLCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.-tSbR9PbnLvkSauyxB4wBVsuhmLhlpom89FExihciB8\n\n",
"published": "2023-08-01T20:16:31.971018Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-08-01T20:16:31.971037Z",
"modified": "2023-08-01T20:16:31.977565Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1736,
"topic": "hermes.message",
"uuid": "5453e491-62fa-4074-8006-baf699b9fe74",
"title": "INTEGRAL follow-up of S230729q",
"submitter": "Volodymyr Savchenko",
"authors": "",
"data": {},
"message_text": "INTEGRAL follow-up of S230729q at 2023-07-29T05:28:44.000\n\n\nSPI-ACS excesses:\nat T0+5.56 FAP = 0.59\n\n\n\n\nnext break in data in 39 hr: 2023-07-30T20:18:34, for 9.2 hr",
"published": "2023-08-01T20:28:34.544143Z",
"message_parser": "Hermes Message Parser v2",
"retracted": false,
"created": "2023-08-01T20:28:34.544159Z",
"modified": "2023-08-01T20:28:34.550000Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1737,
"topic": "hermes.message",
"uuid": "4ea73e5c-251c-4153-bfd5-dbc5a4ee20c5",
"title": "INTEGRAL follow-up of S230731ai",
"submitter": "Volodymyr Savchenko",
"authors": "",
"data": {},
"message_text": "INTEGRAL follow-up of S230731ai at 2023-07-31T10:27:10.000\n\n\nSPI-ACS excesses:\nat T0+-0.78 FAP = 0.025\nat T0+5.3 FAP = 0.073\nat T0+-52.68 FAP = 0.088\nat T0+99.9 FAP = 0.16\nat T0+7.02 FAP = 0.285\nat T0+21.85 FAP = 0.381\n\n\n\n\nnext break in data in 50 hr: 2023-08-02T12:11:10, for 9.2 hr",
"published": "2023-08-01T20:36:41.381147Z",
"message_parser": "Hermes Message Parser v2",
"retracted": false,
"created": "2023-08-01T20:36:41.381162Z",
"modified": "2023-08-01T20:36:41.387465Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1738,
"topic": "hermes.message",
"uuid": "b7aff7bd-646b-4080-95cd-0b9aa8a4b25c",
"title": "INTEGRAL follow-up of S230730bt",
"submitter": "Volodymyr Savchenko",
"authors": "",
"data": {},
"message_text": "INTEGRAL follow-up of S230730bt at 2023-07-30T17:58:17.000\n\n\nSPI-ACS excesses:\nat T0+80.81 FAP = 0.062\nat T0+1.09 FAP = 0.157\nat T0+129.99 FAP = 0.184\nat T0+29.26 FAP = 0.366\nat T0+-15.61 FAP = 0.602\nat T0+100.36 FAP = 0.814\nat T0+47.54 FAP = 0.887\n\n\n\n\nnext break in data in 2.3 hr: 2023-07-30T20:18:34, for 9.2 hr",
"published": "2023-08-01T20:53:50.521647Z",
"message_parser": "Hermes Message Parser v2",
"retracted": false,
"created": "2023-08-01T20:53:50.521673Z",
"modified": "2023-08-01T20:53:50.527762Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1739,
"topic": "hermes.message",
"uuid": "7c19f8d0-a6fb-45ee-8a50-14cc9cdcf133",
"title": "INTEGRAL follow-up of S230730av",
"submitter": "Volodymyr Savchenko",
"authors": "",
"data": {},
"message_text": "INTEGRAL follow-up of S230730av at 2023-07-30T12:33:23.000\n\n\nSPI-ACS excesses:\nat T0+-1.7 FAP = 0.004\nat T0+6.38 FAP = 0.049\nat T0+14.83 FAP = 0.23\nat T0+-186.4 FAP = 0.502\nat T0+-144.7 FAP = 0.566\nat T0+236.88 FAP = 0.934\nat T0+-81.22 FAP = 0.943\n\n\n\n\nnext break in data in 7.8 hr: 2023-07-30T20:18:34, for 9.2 hr",
"published": "2023-08-01T22:19:39.777598Z",
"message_parser": "Hermes Message Parser v2",
"retracted": false,
"created": "2023-08-01T22:19:39.777615Z",
"modified": "2023-08-01T22:19:39.785866Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1740,
"topic": "hermes.message",
"uuid": "00ee0418-42c8-4deb-82f4-65b822de8f48",
"title": "INTEGRAL follow-up of S230729ax",
"submitter": "Volodymyr Savchenko",
"authors": "",
"data": {},
"message_text": "INTEGRAL follow-up of S230729ax at 2023-07-29T16:26:45.000\n\n\nSPI-ACS excesses:\nat T0+10.08 FAP = 0.038\nat T0+-5.54 FAP = 0.243\nat T0+3.18 FAP = 0.679\nat T0+34.31 FAP = 0.989\n\n\n\n\nnext break in data in 28 hr: 2023-07-30T20:18:34, for 9.2 hr",
"published": "2023-08-01T23:11:09.113761Z",
"message_parser": "Hermes Message Parser v2",
"retracted": false,
"created": "2023-08-01T23:11:09.113792Z",
"modified": "2023-08-01T23:11:09.122346Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1741,
"topic": "igwn.gwalert",
"uuid": "33d45f40-423a-4923-a922-f604e403398a",
"title": "S230801am - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230801am/files/cwb.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230801am/view/"
},
"event": {
"far": 1.44293e-05,
"time": "2023-08-01T23:08:12.227Z",
"group": "Burst",
"search": "BBH",
"area_50": 2140.1987952884756,
"area_90": 6202.380038110525,
"duration": 0.024542,
"pipeline": "CWB",
"properties": {},
"instruments": [
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"L1"
],
"significant": false,
"skymap_hash": "6914dcac0520e3a06a1819a7bff6481e",
"classification": {},
"skymap_version": 0,
"central_frequency": 55.496223
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-08-01T23:11:36Z",
"superevent_id": "S230801am",
"external_coinc": null
},
"message_text": "",
"published": "2023-08-01T23:11:37.200954Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-08-01T23:11:37.200975Z",
"modified": "2023-08-01T23:11:37.206910Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1742,
"topic": "igwn.gwalert",
"uuid": "58fd9623-9bdf-49e9-80ad-23b881c06510",
"title": "S230801am - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230801am/files/cwb.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230801am/view/"
},
"event": {
"far": 1.44293e-05,
"time": "2023-08-01T23:08:12.227Z",
"group": "Burst",
"search": "BBH",
"area_50": 2140.1987952884756,
"area_90": 6202.380038110525,
"duration": 0.024542,
"pipeline": "CWB",
"properties": {},
"instruments": [
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"L1"
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"significant": false,
"skymap_hash": "6914dcac0520e3a06a1819a7bff6481e",
"classification": {},
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"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-08-01T23:16:10Z",
"superevent_id": "S230801am",
"external_coinc": null
},
"message_text": "",
"published": "2023-08-01T23:16:11.760474Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-08-01T23:16:11.760495Z",
"modified": "2023-08-01T23:16:11.766659Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1743,
"topic": "hermes.message",
"uuid": "8d59cd7c-3faa-46b0-8607-89cbfca2db50",
"title": "INTEGRAL follow-up of S230801x",
"submitter": "Volodymyr Savchenko",
"authors": "",
"data": {},
"message_text": "INTEGRAL follow-up of S230801x at 2023-08-01T06:39:41.000\n\n\nSPI-ACS excesses:\nat T0+-126.88 FAP = 0.11\nat T0+-73.01 FAP = 0.626\nat T0+28.69 FAP = 0.64\nat T0+-114.03 FAP = 0.717\nat T0+-143.23 FAP = 0.763\nat T0+20.32 FAP = 0.859\n\n\n\n\nnext break in data in 30 hr: 2023-08-02T12:11:10, for 9.2 hr",
"published": "2023-08-01T23:18:40.134550Z",
"message_parser": "Hermes Message Parser v2",
"retracted": false,
"created": "2023-08-01T23:18:40.134576Z",
"modified": "2023-08-01T23:18:40.141052Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1744,
"topic": "hermes.message",
"uuid": "64a8c04f-df4d-4225-9583-312698aadce2",
"title": "INTEGRAL follow-up of S230731al",
"submitter": "Volodymyr Savchenko",
"authors": "",
"data": {},
"message_text": "INTEGRAL follow-up of S230731al at 2023-07-31T21:43:05.000\n\n\nSPI-ACS excesses:\nat T0+6.37 FAP = 0.016\nat T0+96.62 FAP = 0.078\nat T0+11.5 FAP = 0.098\nat T0+32.47 FAP = 0.282\nat T0+-23.23 FAP = 0.459\nat T0+-204.28 FAP = 0.658\nat T0+-3.7 FAP = 0.754\n\n\n\n\nnext break in data in 38 hr: 2023-08-02T12:11:10, for 9.2 hr",
"published": "2023-08-01T23:26:26.420503Z",
"message_parser": "Hermes Message Parser v2",
"retracted": false,
"created": "2023-08-01T23:26:26.420520Z",
"modified": "2023-08-01T23:26:26.426727Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1745,
"topic": "hermes.message",
"uuid": "8cbf4ac5-2d1f-4971-bb1a-015bac582408",
"title": "INTEGRAL follow-up of S230730r",
"submitter": "Volodymyr Savchenko",
"authors": "",
"data": {},
"message_text": "INTEGRAL follow-up of S230730r at 2023-07-30T05:06:06.000\n\n\nSPI-ACS excesses:\nat T0+0.64 FAP = 0.101\nat T0+3.77 FAP = 0.454\nat T0+-6.36 FAP = 0.743\nat T0+-92.61 FAP = 0.866\nat T0+-69.58 FAP = 0.924\n\n\n\n\nnext break in data in 15 hr: 2023-07-30T20:18:34, for 9.2 hr",
"published": "2023-08-01T23:49:51.900559Z",
"message_parser": "Hermes Message Parser v2",
"retracted": false,
"created": "2023-08-01T23:49:51.900592Z",
"modified": "2023-08-01T23:49:51.910515Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1746,
"topic": "igwn.gwalert",
"uuid": "8b5194d3-1395-4396-aa27-d754c988090f",
"title": "S230801at - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230801at/files/cwb.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230801at/view/"
},
"event": {
"far": 5.38303e-06,
"time": "2023-08-01T23:58:25.059Z",
"group": "Burst",
"search": "BBH",
"area_50": 1048.2777628687475,
"area_90": 3820.4646730012314,
"duration": 0.007844,
"pipeline": "CWB",
"properties": {},
"instruments": [
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"L1"
],
"significant": false,
"skymap_hash": "ede987ca36900ca94ed27caa0588bf2f",
"classification": {},
"skymap_version": 0,
"central_frequency": 101.777153
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-08-01T23:59:28Z",
"superevent_id": "S230801at",
"external_coinc": null
},
"message_text": "",
"published": "2023-08-01T23:59:29.738726Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-08-01T23:59:29.738761Z",
"modified": "2023-08-01T23:59:29.745717Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1747,
"topic": "igwn.gwalert",
"uuid": "d81d3e9c-d650-49c6-a311-27fc66bb41df",
"title": "S230801at - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230801at/files/cwb.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230801at/view/"
},
"event": {
"far": 5.38303e-06,
"time": "2023-08-01T23:58:25.059Z",
"group": "Burst",
"search": "BBH",
"area_50": 1048.2777628687475,
"area_90": 3820.4646730012314,
"duration": 0.007844,
"pipeline": "CWB",
"properties": {},
"instruments": [
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"L1"
],
"significant": false,
"skymap_hash": "ede987ca36900ca94ed27caa0588bf2f",
"classification": {},
"skymap_version": 0,
"central_frequency": 101.777153
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-08-02T00:04:02Z",
"superevent_id": "S230801at",
"external_coinc": null
},
"message_text": "",
"published": "2023-08-02T00:04:02.804168Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-08-02T00:04:02.804197Z",
"modified": "2023-08-02T00:04:02.812688Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1748,
"topic": "hermes.message",
"uuid": "a6a4bc57-87d2-4ae3-98ff-04c60a3e540a",
"title": "INTEGRAL follow-up of S230729w",
"submitter": "Volodymyr Savchenko",
"authors": "",
"data": {},
"message_text": "INTEGRAL follow-up of S230729w at 2023-07-29T07:53:16.000\n\n\nSPI-ACS excesses:\nat T0+43.82 FAP = 0.292\n\n\n\n\nnext break in data in 36 hr: 2023-07-30T20:18:34, for 9.2 hr",
"published": "2023-08-02T00:11:27.316650Z",
"message_parser": "Hermes Message Parser v2",
"retracted": false,
"created": "2023-08-02T00:11:27.316670Z",
"modified": "2023-08-02T00:11:27.322937Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1749,
"topic": "hermes.message",
"uuid": "6656d82b-1f96-49bc-8d17-10e80841ffba",
"title": "INTEGRAL follow-up of S230729bc",
"submitter": "Volodymyr Savchenko",
"authors": "",
"data": {},
"message_text": "INTEGRAL follow-up of S230729bc at 2023-07-29T17:11:55.000\n\n\nSPI-ACS excesses:\nat T0+83.26 FAP = 0.14\nat T0+11.56 FAP = 0.375\nat T0+185.56 FAP = 0.414\nat T0+-35.89 FAP = 0.502\nat T0+-11.69 FAP = 0.566\nat T0+137.13 FAP = 0.65\nat T0+5.38 FAP = 0.692\nat T0+185.66 FAP = 0.866\nat T0+107.13 FAP = 0.931\n\n\n\n\nnext break in data in 27 hr: 2023-07-30T20:18:34, for 9.2 hr",
"published": "2023-08-02T00:27:27.274054Z",
"message_parser": "Hermes Message Parser v2",
"retracted": false,
"created": "2023-08-02T00:27:27.274079Z",
"modified": "2023-08-02T00:27:27.280875Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1750,
"topic": "hermes.message",
"uuid": "f1c34f76-604e-47fe-b7db-adcc011de08e",
"title": "INTEGRAL follow-up of S230729t",
"submitter": "Volodymyr Savchenko",
"authors": "",
"data": {},
"message_text": "INTEGRAL follow-up of S230729t at 2023-07-29T06:54:38.000\n\n\nSPI-ACS excesses:\nat T0+166.06 FAP = 0.928\n\n\n\n\nnext break in data in 37 hr: 2023-07-30T20:18:34, for 9.2 hr",
"published": "2023-08-02T01:40:38.449910Z",
"message_parser": "Hermes Message Parser v2",
"retracted": false,
"created": "2023-08-02T01:40:38.449929Z",
"modified": "2023-08-02T01:40:38.458231Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1751,
"topic": "hermes.message",
"uuid": "5defbfda-987f-47f7-b0b3-7f904ef7b2f0",
"title": "INTEGRAL follow-up of S230729z",
"submitter": "Volodymyr Savchenko",
"authors": "",
"data": {},
"message_text": "INTEGRAL follow-up of S230729z at 2023-07-29T08:23:17.000\n\n\nSPI-ACS excesses:\n\n\n\n\nnext break in data in 36 hr: 2023-07-30T20:18:34, for 9.2 hr",
"published": "2023-08-02T01:55:43.545455Z",
"message_parser": "Hermes Message Parser v2",
"retracted": false,
"created": "2023-08-02T01:55:43.545472Z",
"modified": "2023-08-02T01:55:43.553482Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1752,
"topic": "hermes.message",
"uuid": "2fcaeaf7-76e6-4999-a664-c8b78af3fe93",
"title": "INTEGRAL follow-up of S230731ag",
"submitter": "Volodymyr Savchenko",
"authors": "",
"data": {},
"message_text": "INTEGRAL follow-up of S230731ag at 2023-07-31T10:16:01.000\n\n\nSPI-ACS excesses:\nat T0+-76.5 FAP = 0.091\nat T0+12.07 FAP = 0.282\nat T0+-22.08 FAP = 0.337\nat T0+5.75 FAP = 0.459\nat T0+-13.5 FAP = 0.472\nat T0+111.92 FAP = 0.996\n\n\n\n\nnext break in data in 50 hr: 2023-08-02T12:11:10, for 9.2 hr",
"published": "2023-08-02T02:19:12.408706Z",
"message_parser": "Hermes Message Parser v2",
"retracted": false,
"created": "2023-08-02T02:19:12.408732Z",
"modified": "2023-08-02T02:19:12.417718Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1753,
"topic": "gcn.circular",
"uuid": "f434b956-1257-4767-a33e-356196661330",
"title": "LIGO/Virgo/KAGRA S230731an: Upper limits from Swift/BAT-GUANO",
"submitter": "Hop gcn.circular",
"authors": "Samuele Ronchini at PSU <sjs8171@psu.edu>",
"data": {
"date": "23/08/02 02:20:05 GMT",
"from": "Samuele Ronchini at PSU <sjs8171@psu.edu>",
"title": "GCN CIRCULAR",
"number": "34310",
"subject": "LIGO/Virgo/KAGRA S230731an: Upper limits from Swift/BAT-GUANO"
},
"message_text": "Samuele Ronchini (PSU), Gayathri Raman (PSU), Aaron Tohuvavohu (U Toronto), James DeLaunay (U Alabama), Jamie A. Kennea (PSU), Tyler Parsotan (NASA GSFC) report:\n\nSwift/BAT was observing 64.47 % of the GW localization probability (bayestar.multiorder.fits) at merger time. A fraction 5.72 % of the GW localization posterior is contained inside the BAT coded FoV.\n\nThe LVK notice, distributed in near real-time, triggered the Swift Mission Operations Center operated Gamma-ray Urgent Archiver for Novel Opportunities (GUANO; Tohuvavohu et al. 2020, ApJ, 900, 1).\n\nUpon trigger by this notice, GUANO sent a command to the Swift Burst Alert Telescope (BAT) to save 200 seconds of BAT event-mode data from [-50,+150] seconds around the time of the burst. All the requested event mode data was delivered to the ground.\n\nUsing the NITRATES analysis (DeLaunay + Tohuvavohu 2022, ApJ, 941, 169), we searched for emission on 8 timescales from 0.128s to 16.384s in the interval [-20,+20] seconds around the merger time. We find no evidence for a signal, and derive the following upper limits.\n\nWe quote the 5-sigma flux upper limits in the 15-350 keV band, weighted over the GW localization, for four spectral templates (soft, normal, and hard GRB-like templates described in [arXiv:1612.02395], and spectral shape from GRB170817A [arXiv:1710.05446]) and for four time bins.\nIn units of 10^-7 erg/s/cm^2:\n\ntime_bin (s) soft normal hard GRB170817\n-------------------------------\n0.256 22.8 15.3 13.6 17.1\n1.024 11.6 7.8 6.9 8.7\n4.096 6.2 4.2 3.7 4.6\n16.384 3.8 2.6 2.3 2.9\n\n\nThe upper limits as function of sky position are plotted here, alongside the GW localization:\nhttps://doi.org/10.5281/zenodo.8206758\nThe solid and dashed lines indicate the 90% and 50% GW contour levels, respectively.\n\nThe corresponding fits file can be found here:\nhttps://doi.org/10.5281/zenodo.8206771\n\nGUANO is a fully autonomous, extremely low latency, spacecraft\ncommanding pipeline designed for targeted recovery of BAT event mode\ndata around the times of compelling astrophysical events to enable\nmore sensitive GRB searches.\n\nA live reporting of Swift/BAT event data recovered by GUANO can be\nfound at: https://www.swift.psu.edu/guano/\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjkwOTQyODEwLCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.ThPAUTIe6mbowNBb7K5zgSINQ61RPEb8_8wiMSvsBFk\n\n",
"published": "2023-08-02T02:20:16.502037Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-08-02T02:20:16.502054Z",
"modified": "2023-08-02T02:20:16.509006Z",
"nonlocalizedevents": [
{
"event_id": "S230731a"
}
],
"targets": []
},
{
"id": 1754,
"topic": "hermes.message",
"uuid": "bea3150b-b8f4-48f1-8099-693606d1aeaa",
"title": "INTEGRAL follow-up of S230730bq",
"submitter": "Volodymyr Savchenko",
"authors": "",
"data": {},
"message_text": "INTEGRAL follow-up of S230730bq at 2023-07-30T17:30:14.000\n\n\nSPI-ACS excesses:\nat T0+-3.66 FAP = 0.115\nat T0+5.69 FAP = 0.146\nat T0+23.79 FAP = 0.269\nat T0+-180.69 FAP = 0.549\nat T0+-2.64 FAP = 0.621\n\n\n\n\nnext break in data in 2.8 hr: 2023-07-30T20:18:34, for 9.2 hr",
"published": "2023-08-02T02:35:00.265177Z",
"message_parser": "Hermes Message Parser v2",
"retracted": false,
"created": "2023-08-02T02:35:00.265196Z",
"modified": "2023-08-02T02:35:00.271648Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1755,
"topic": "igwn.gwalert",
"uuid": "cebb6cb4-2870-47d2-bc09-dfb31871f5cb",
"title": "S230802o - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230802o/files/cwb.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230802o/view/"
},
"event": {
"far": 1.05246e-05,
"time": "2023-08-02T03:35:27.027Z",
"group": "Burst",
"search": "BBH",
"area_50": 2584.185133605183,
"area_90": 8691.724989806846,
"duration": 0.01959,
"pipeline": "CWB",
"properties": {},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "9e60a7e1dd75a5de08522e7656e6f072",
"classification": {},
"skymap_version": 0,
"central_frequency": 40.063313
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-08-02T03:38:02Z",
"superevent_id": "S230802o",
"external_coinc": null
},
"message_text": "",
"published": "2023-08-02T03:38:03.372821Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-08-02T03:38:03.372842Z",
"modified": "2023-08-02T03:38:03.380074Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1756,
"topic": "igwn.gwalert",
"uuid": "18601f6a-849e-406b-a3c4-50ffd30a0927",
"title": "S230802o - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230802o/files/cwb.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230802o/view/"
},
"event": {
"far": 1.05246e-05,
"time": "2023-08-02T03:35:27.027Z",
"group": "Burst",
"search": "BBH",
"area_50": 2584.185133605183,
"area_90": 8691.724989806846,
"duration": 0.01959,
"pipeline": "CWB",
"properties": {},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "9e60a7e1dd75a5de08522e7656e6f072",
"classification": {},
"skymap_version": 0,
"central_frequency": 40.063313
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-08-02T03:42:36Z",
"superevent_id": "S230802o",
"external_coinc": null
},
"message_text": "",
"published": "2023-08-02T03:42:36.714161Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-08-02T03:42:36.714182Z",
"modified": "2023-08-02T03:42:36.720337Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1757,
"topic": "hermes.message",
"uuid": "e0c612f4-3cb3-43ed-b2b5-e9f220d0f062",
"title": "INTEGRAL follow-up of S230729ak",
"submitter": "Volodymyr Savchenko",
"authors": "",
"data": {},
"message_text": "INTEGRAL follow-up of S230729ak at 2023-07-29T11:54:38.000\n\n\nSPI-ACS excesses:\nat T0+30.57 FAP = 0.3\nat T0+-5.35 FAP = 0.407\nat T0+2.75 FAP = 0.414\nat T0+-67.05 FAP = 0.851\nat T0+-12.23 FAP = 0.945\n\n\n\n\nnext break in data in 32 hr: 2023-07-30T20:18:34, for 9.2 hr",
"published": "2023-08-02T03:53:20.288082Z",
"message_parser": "Hermes Message Parser v2",
"retracted": false,
"created": "2023-08-02T03:53:20.288099Z",
"modified": "2023-08-02T03:53:20.294178Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1758,
"topic": "igwn.gwalert",
"uuid": "5d0eb99a-bcf4-4b61-b279-91b802da977c",
"title": "S230802r - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230802r/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230802r/view/"
},
"event": {
"far": 8.814963324380413e-06,
"time": "2023-08-02T04:17:31.194Z",
"group": "CBC",
"search": "AllSky",
"area_50": 517.2147088613816,
"area_90": 1801.333986034467,
"duration": null,
"pipeline": "pycbc",
"properties": {
"HasNS": 1.0,
"HasMassGap": 0.2647196653761191,
"HasRemnant": 0.2750834257512376
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "3b83b2bca46bdde72481bc02bac88ad0",
"classification": {
"BBH": 0.00021732677378883604,
"BNS": 0.0,
"NSBH": 0.0020347467796232315,
"Terrestrial": 0.9977479264465879
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-08-02T04:18:19Z",
"superevent_id": "S230802r",
"external_coinc": null
},
"message_text": "",
"published": "2023-08-02T04:18:20.708849Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-08-02T04:18:20.708869Z",
"modified": "2023-08-02T04:18:20.715198Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1759,
"topic": "igwn.gwalert",
"uuid": "78aeebe0-a5e3-4997-b4ac-009f91f22fbc",
"title": "S230802r - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230802r/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230802r/view/"
},
"event": {
"far": 8.814963324380413e-06,
"time": "2023-08-02T04:17:31.194Z",
"group": "CBC",
"search": "AllSky",
"area_50": 517.2147088613816,
"area_90": 1801.333986034467,
"duration": null,
"pipeline": "pycbc",
"properties": {
"HasNS": 1.0,
"HasMassGap": 0.2647196653761191,
"HasRemnant": 0.2750834257512376
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "3b83b2bca46bdde72481bc02bac88ad0",
"classification": {
"BBH": 0.00021732677378883604,
"BNS": 0.0,
"NSBH": 0.0020347467796232315,
"Terrestrial": 0.9977479264465879
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-08-02T04:22:54Z",
"superevent_id": "S230802r",
"external_coinc": null
},
"message_text": "",
"published": "2023-08-02T04:22:55.310074Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-08-02T04:22:55.310095Z",
"modified": "2023-08-02T04:22:55.316291Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1760,
"topic": "gcn.circular",
"uuid": "6723d6c2-ae5f-4126-843b-aafa5a3bb24f",
"title": "IceCube-230707A: JCMT/SCUBA-2 submm observations",
"submitter": "Hop gcn.circular",
"authors": "Kuiyun Huang at CYCU <kuiyun@gmail.com>",
"data": {
"date": "23/08/02 04:44:13 GMT",
"from": "Kuiyun Huang at CYCU <kuiyun@gmail.com>",
"title": "GCN CIRCULAR",
"number": "34311",
"subject": "IceCube-230707A: JCMT/SCUBA-2 submm observations"
},
"message_text": "Y. Urata, K.Y. Huang on behalf of a larger collaboration\n\nWe observed the field of IceCube-230707A (GCN Circ. 34163) using\nSCUBA-2 attached to JCMT. The observations at 450 and 850 um were\nconducted on 2023/07/08, 2023/07/14, 2023/07/24, 2023/07/25, and\n2023/07/28. In the individual epochs, SCUBA-2 imaged the field\ncentered at RA 269.03, Dec -1.94 with 1.3 deg diameter. The rms of the\nstacked map in 850um is 6 mJy. There was no source brighter than the\n5-sigma limit.\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjkwOTUxNDU5LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.ZLvbKNQGrzKnLyxajysfnrM2gRQM4zFqXMsQLgKLZWA\n\n",
"published": "2023-08-02T04:44:29.760640Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-08-02T04:44:29.760657Z",
"modified": "2023-08-02T04:44:29.766936Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1761,
"topic": "gcn.circular",
"uuid": "62fbaa44-e51b-4c48-a583-daa388e1a280",
"title": "IceCube-230724A: JCMT/SCUBA-2 submm observations",
"submitter": "Hop gcn.circular",
"authors": "Kuiyun Huang at CYCU <kuiyun@gmail.com>",
"data": {
"date": "23/08/02 04:44:38 GMT",
"from": "Kuiyun Huang at CYCU <kuiyun@gmail.com>",
"title": "GCN CIRCULAR",
"number": "34312",
"subject": "IceCube-230724A: JCMT/SCUBA-2 submm observations"
},
"message_text": "Y. Urata, K.Y. Huang on behalf of a larger collaboration\n\nWe observed the field of IceCube-230724A (GCN Circ. 34265) using\nSCUBA-2 attached to JCMT. The observations at 450 and 850 um were\nconducted on 2023/07/28 and 2023/07/29. The individual observations\ncovered the 90% IceCube-230724A uncertainty localization region. The\nrms of the stacked map in 850um is 7.7 mJy. There was no source\nbrighter than the 5-sigma limit.\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjkwOTUxNDc5LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.7JJ5KMpiC1Uc5--_qWQgRdpz5p-y2IbBYJjwu68yi30\n\n",
"published": "2023-08-02T04:44:42.787882Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-08-02T04:44:42.787898Z",
"modified": "2023-08-02T04:44:42.793561Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1762,
"topic": "hermes.message",
"uuid": "d68d96b5-386a-461a-91ed-8efd5f47bcec",
"title": "INTEGRAL follow-up of S230729bv",
"submitter": "Volodymyr Savchenko",
"authors": "",
"data": {},
"message_text": "INTEGRAL follow-up of S230729bv at 2023-07-29T20:06:20.000\n\n\nSPI-ACS excesses:\nat T0+-1.08 FAP = 0.032\nat T0+10.47 FAP = 0.285\nat T0+-4.38 FAP = 0.986\n\n\n\n\nnext break in data in 24 hr: 2023-07-30T20:18:34, for 9.2 hr",
"published": "2023-08-02T04:58:12.602073Z",
"message_parser": "Hermes Message Parser v2",
"retracted": false,
"created": "2023-08-02T04:58:12.602089Z",
"modified": "2023-08-02T04:58:12.608295Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1763,
"topic": "igwn.gwalert",
"uuid": "fd7eb428-b813-4331-8a02-d10c3d49acb6",
"title": "S230802x - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230802x/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230802x/view/"
},
"event": {
"far": 3.192886208981802e-06,
"time": "2023-08-02T05:05:47.057Z",
"group": "CBC",
"search": "AllSky",
"area_50": 434.01972627982474,
"area_90": 1810.356392720487,
"duration": null,
"pipeline": "pycbc",
"properties": {
"HasNS": 1.0,
"HasMassGap": 0.4841043579724783,
"HasRemnant": 0.559630876694722
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "6c968bd0de6bcd0822bb2940021a71be",
"classification": {
"BBH": 0.0,
"BNS": 0.001076778310501236,
"NSBH": 0.005850489105446186,
"Terrestrial": 0.9930727325840526
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-08-02T05:06:15Z",
"superevent_id": "S230802x",
"external_coinc": null
},
"message_text": "",
"published": "2023-08-02T05:06:16.593494Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-08-02T05:06:16.593514Z",
"modified": "2023-08-02T05:06:16.599740Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1764,
"topic": "igwn.gwalert",
"uuid": "90096426-7f78-4929-aa16-5c3031f8e664",
"title": "S230802x - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230802x/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230802x/view/"
},
"event": {
"far": 3.192886208981802e-06,
"time": "2023-08-02T05:05:47.057Z",
"group": "CBC",
"search": "AllSky",
"area_50": 434.01972627982474,
"area_90": 1810.356392720487,
"duration": null,
"pipeline": "pycbc",
"properties": {
"HasNS": 1.0,
"HasMassGap": 0.4841043579724783,
"HasRemnant": 0.559630876694722
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "6c968bd0de6bcd0822bb2940021a71be",
"classification": {
"BBH": 0.0,
"BNS": 0.001076778310501236,
"NSBH": 0.005850489105446186,
"Terrestrial": 0.9930727325840526
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-08-02T05:10:49Z",
"superevent_id": "S230802x",
"external_coinc": null
},
"message_text": "",
"published": "2023-08-02T05:10:50.327590Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-08-02T05:10:50.327635Z",
"modified": "2023-08-02T05:10:50.334162Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1765,
"topic": "igwn.gwalert",
"uuid": "28b17962-9414-45fa-922f-5ece4ec5b055",
"title": "S230802ac - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230802ac/files/cwb.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230802ac/view/"
},
"event": {
"far": 1.71289e-05,
"time": "2023-08-02T05:43:10.301Z",
"group": "Burst",
"search": "BBH",
"area_50": 2444.023094854918,
"area_90": 8369.436230045758,
"duration": 0.021837,
"pipeline": "CWB",
"properties": {},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "3f9886ec631cc9e7b699208f0929a043",
"classification": {},
"skymap_version": 0,
"central_frequency": 28.730482
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-08-02T05:45:27Z",
"superevent_id": "S230802ac",
"external_coinc": null
},
"message_text": "",
"published": "2023-08-02T05:45:27.657785Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-08-02T05:45:27.657804Z",
"modified": "2023-08-02T05:45:27.664058Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1766,
"topic": "hermes.message",
"uuid": "01574e97-097e-4f33-963f-42a85e3d0f13",
"title": "INTEGRAL follow-up of S230729c",
"submitter": "Volodymyr Savchenko",
"authors": "",
"data": {},
"message_text": "INTEGRAL follow-up of S230729c at 2023-07-29T02:57:44.000\n\n\nSPI-ACS excesses:\nat T0+18.66 FAP = 0.242\nat T0+-76.64 FAP = 0.79\n\n\n\n\nnext break in data in 41 hr: 2023-07-30T20:18:34, for 9.2 hr",
"published": "2023-08-02T05:46:51.890352Z",
"message_parser": "Hermes Message Parser v2",
"retracted": false,
"created": "2023-08-02T05:46:51.890371Z",
"modified": "2023-08-02T05:46:51.896734Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1767,
"topic": "igwn.gwalert",
"uuid": "239adc93-e29b-4a45-954e-838bf489e92e",
"title": "S230802ac - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230802ac/files/cwb.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230802ac/view/"
},
"event": {
"far": 1.71289e-05,
"time": "2023-08-02T05:43:10.301Z",
"group": "Burst",
"search": "BBH",
"area_50": 2444.023094854918,
"area_90": 8369.436230045758,
"duration": 0.021837,
"pipeline": "CWB",
"properties": {},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "3f9886ec631cc9e7b699208f0929a043",
"classification": {},
"skymap_version": 0,
"central_frequency": 28.730482
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-08-02T05:50:01Z",
"superevent_id": "S230802ac",
"external_coinc": null
},
"message_text": "",
"published": "2023-08-02T05:50:02.566028Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-08-02T05:50:02.566053Z",
"modified": "2023-08-02T05:50:02.572505Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1768,
"topic": "hermes.message",
"uuid": "f0b3a0f9-4f99-4097-b774-e0aacb5b7130",
"title": "INTEGRAL follow-up of S230729cj",
"submitter": "Volodymyr Savchenko",
"authors": "",
"data": {},
"message_text": "INTEGRAL follow-up of S230729cj at 2023-07-29T23:13:05.000\n\n\nSPI-ACS excesses:\nat T0+-9.95 FAP = 0.459\nat T0+-4.5 FAP = 0.618\nat T0+-48.07 FAP = 0.681\n\n\n\n\nnext break in data in 21 hr: 2023-07-30T20:18:34, for 9.2 hr",
"published": "2023-08-02T06:32:09.918399Z",
"message_parser": "Hermes Message Parser v2",
"retracted": false,
"created": "2023-08-02T06:32:09.918417Z",
"modified": "2023-08-02T06:32:09.926314Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1769,
"topic": "hermes.message",
"uuid": "fa1dfe7e-f6e7-47a0-9f21-1b13a28358e1",
"title": "INTEGRAL follow-up of S230728b",
"submitter": "Volodymyr Savchenko",
"authors": "",
"data": {},
"message_text": "INTEGRAL follow-up of S230728b at 2023-07-28T00:16:26.000\n\n\nSPI-ACS excesses:\nat T0+81.13 FAP = 0.038\nat T0+0.4 FAP = 0.053\nat T0+1.05 FAP = 0.137\nat T0+-31.95 FAP = 0.171\nat T0+-125.45 FAP = 0.767\n\n\n\n\nnext break in data in 3.1 hr: 2023-07-28T03:19:37, for 10 hr",
"published": "2023-08-02T06:50:58.182965Z",
"message_parser": "Hermes Message Parser v2",
"retracted": false,
"created": "2023-08-02T06:50:58.182996Z",
"modified": "2023-08-02T06:50:58.189583Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1770,
"topic": "gcn.circular",
"uuid": "256b744c-51f6-4ce3-aea9-177e0cbcb910",
"title": "GRB 230802A: Swift detection of a burst",
"submitter": "Hop gcn.circular",
"authors": "K.L. Page at U Leicester <klp5@leicester.ac.uk>",
"data": {
"date": "23/08/02 07:08:39 GMT",
"from": "K.L. Page at U Leicester <klp5@leicester.ac.uk>",
"title": "GCN CIRCULAR",
"number": "34313",
"subject": "GRB 230802A: Swift detection of a burst"
},
"message_text": "\nN. J. Klingler (GSFC/UMBC/CRESSTII), V. D'Elia (SSDC & INAF-OAR),\nP. A. Evans (U Leicester), J. A. Kennea (PSU), S. Laha (GSFC/UMBC),\nA. Y. Lien (U Tampa), A. Melandri (INAF-OAR),\nK. L. Page (U Leicester), D. M. Palmer (LANL) and M. H. Siegel (PSU)\nreport on behalf of the Neil Gehrels Swift Observatory Team:\n\nAt 06:50:26 UT, the Swift Burst Alert Telescope (BAT) triggered and\nlocated GRB 230802A (trigger\u001182085). Swift slewed immediately to the burst.\nThe BAT on-board calculated location is\nRA, Dec 76.221, +19.570 which is\n RA(J2000) = 05h 04m 53s\n Dec(J2000) = +19d 34' 10\"\nwith an uncertainty of 3 arcmin (radius, 90% containment, including\nsystematic uncertainty). The BAT light curve showed a wide pulse\nstructure with a duration of about 60 sec. The peak count rate\nwas ~3000 counts/sec (15-350 keV), at ~0 sec after the trigger.\n\nThe XRT began observing the field at 06:51:30.3 UT, 64.1 seconds after\nthe BAT trigger. Using promptly downlinked data we find a bright,\nfading, uncatalogued X-ray source located at RA, Dec 76.23952, 19.56147\nwhich is equivalent to:\n RA(J2000) = 05h 04m 57.48s\n Dec(J2000) = +19d 33' 41.3\"\nwith an uncertainty of 3.5 arcseconds (radius, 90% containment). This\nlocation is 69 arcseconds from the BAT onboard position, within the BAT\nerror circle. This position may be improved as more data are received;\nthe latest position is available at https://www.swift.ac.uk/sper. No\nspectrum from the promptly downlinked event data is yet available to\ndetermine the column density.\n\nThe initial flux in the 2.5 s image was 1.25e-09 erg cm^-2 s^-1 (0.2-10\nkeV).\n\nUVOT took a finding chart exposure of 150 seconds with the White filter\nstarting 73 seconds after the BAT trigger. No credible afterglow candidate has\nbeen found in the initial data products. The 2.7'x2.7' sub-image covers 100% of\nthe XRT error circle. The typical 3-sigma upper limit has been about 19.6 mag.\nThe 8'x8' region for the list of sources generated on-board covers 100% of the\nXRT error circle. The list of sources is typically complete to about 18 mag. No\ncorrection has been made for the expected extinction corresponding to E(B-V) of\n0.614.\n\nBurst Advocate for this burst is N. J. Klingler (noelklin AT umbc.edu).\nPlease contact the BA by email if you require additional information\nregarding Swift followup of this burst. In extremely urgent cases, after\ntrying the Burst Advocate, you can contact the Swift PI by phone (see\nSwift TOO web site for information: http://www.swift.psu.edu/)\n\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjkwOTYwMTI0LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.JHisq2ZR83De20gq5hNy5hb4yAMwRKQcf7yTd7P0fxs\n\n",
"published": "2023-08-02T07:08:50.502559Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-08-02T07:08:50.502577Z",
"modified": "2023-08-02T07:08:50.508929Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1771,
"topic": "hermes.message",
"uuid": "12ae58cb-85a6-4e77-b769-53af1c064b32",
"title": "INTEGRAL follow-up of S230729ap",
"submitter": "Volodymyr Savchenko",
"authors": "",
"data": {},
"message_text": "INTEGRAL follow-up of S230729ap at 2023-07-29T13:46:20.000\n\n\nSPI-ACS excesses:\n\n\n\n\nnext break in data in 31 hr: 2023-07-30T20:18:34, for 9.2 hr",
"published": "2023-08-02T07:25:52.709859Z",
"message_parser": "Hermes Message Parser v2",
"retracted": false,
"created": "2023-08-02T07:25:52.709881Z",
"modified": "2023-08-02T07:25:52.715895Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1772,
"topic": "hermes.message",
"uuid": "720c85a1-f48c-4999-bfb8-c45c13881522",
"title": "INTEGRAL follow-up of S230729bl",
"submitter": "Volodymyr Savchenko",
"authors": "",
"data": {},
"message_text": "INTEGRAL follow-up of S230729bl at 2023-07-29T17:53:06.000\n\n\nSPI-ACS excesses:\nat T0+3.61 FAP = 0.168\nat T0+-14.02 FAP = 0.742\n\n\n\n\nnext break in data in 26 hr: 2023-07-30T20:18:34, for 9.2 hr",
"published": "2023-08-02T08:10:01.116038Z",
"message_parser": "Hermes Message Parser v2",
"retracted": false,
"created": "2023-08-02T08:10:01.116055Z",
"modified": "2023-08-02T08:10:01.125536Z",
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"targets": []
},
{
"id": 1773,
"topic": "hermes.message",
"uuid": "c868809d-1fbe-4b13-bf78-9dedf4be3774",
"title": "INTEGRAL follow-up of S230801i",
"submitter": "Volodymyr Savchenko",
"authors": "",
"data": {},
"message_text": "INTEGRAL follow-up of S230801i at 2023-08-01T01:41:33.000\n\n\nSPI-ACS excesses:\nat T0+-29.67 FAP = 0.065\nat T0+-62.49 FAP = 0.252\nat T0+-69.02 FAP = 0.355\nat T0+90.93 FAP = 0.407\nat T0+40.86 FAP = 0.634\nat T0+-75.34 FAP = 0.743\n\n\n\n\nnext break in data in 34 hr: 2023-08-02T12:11:10, for 9.2 hr",
"published": "2023-08-02T08:27:42.825722Z",
"message_parser": "Hermes Message Parser v2",
"retracted": false,
"created": "2023-08-02T08:27:42.825739Z",
"modified": "2023-08-02T08:27:42.831795Z",
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{
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"topic": "igwn.gwalert",
"uuid": "2ab88ed0-29c0-4d8f-a0da-f73c2a62338e",
"title": "S230802ag - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
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"time_created": "2023-08-02T08:44:37Z",
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"published": "2023-08-02T08:44:39.248147Z",
"message_parser": "IGWN Alert Avro Parser v1",
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"created": "2023-08-02T08:44:39.248167Z",
"modified": "2023-08-02T08:44:39.256944Z",
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"targets": []
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{
"id": 1775,
"topic": "igwn.gwalert",
"uuid": "a38be3ec-0ad4-4422-842b-a0b4038778ee",
"title": "S230802ag - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
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"time": "2023-08-02T08:43:44.767Z",
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"sequence_num": 2,
"time_created": "2023-08-02T08:49:12Z",
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},
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"published": "2023-08-02T08:49:13.961314Z",
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"retracted": false,
"created": "2023-08-02T08:49:13.961343Z",
"modified": "2023-08-02T08:49:13.967420Z",
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{
"id": 1776,
"topic": "hermes.message",
"uuid": "54a4db53-973d-44cc-a6a5-a1c99db51faa",
"title": "INTEGRAL follow-up of S230728ax",
"submitter": "Volodymyr Savchenko",
"authors": "",
"data": {},
"message_text": "INTEGRAL follow-up of S230728ax at 2023-07-28T20:29:31.000\n\n\nSPI-ACS excesses:\nat T0+-1.06 FAP = 0.005\nat T0+-85.21 FAP = 0.455\nat T0+-61.16 FAP = 0.49\nat T0+46.62 FAP = 0.917\nat T0+254.72 FAP = 0.92\nat T0+261.14 FAP = 0.989\n\n\n\n\nnext break in data in 48 hr: 2023-07-30T20:18:34, for 9.2 hr",
"published": "2023-08-02T09:03:56.545541Z",
"message_parser": "Hermes Message Parser v2",
"retracted": false,
"created": "2023-08-02T09:03:56.545565Z",
"modified": "2023-08-02T09:03:56.551944Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1777,
"topic": "hermes.message",
"uuid": "7752b53b-1aa9-4fd2-b44a-f19dbe550bf0",
"title": "INTEGRAL follow-up of S230729ce",
"submitter": "Volodymyr Savchenko",
"authors": "",
"data": {},
"message_text": "INTEGRAL follow-up of S230729ce at 2023-07-29T22:02:45.000\n\n\nSPI-ACS excesses:\n\n\n\n\nnext break in data in 22 hr: 2023-07-30T20:18:34, for 9.2 hr",
"published": "2023-08-02T09:15:09.417556Z",
"message_parser": "Hermes Message Parser v2",
"retracted": false,
"created": "2023-08-02T09:15:09.417573Z",
"modified": "2023-08-02T09:15:09.423630Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1778,
"topic": "igwn.gwalert",
"uuid": "f402d4af-82cf-4026-a2f7-166c47dc69ee",
"title": "S230802aj - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
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},
"event": {
"far": 1.57413e-05,
"time": "2023-08-02T09:36:26.629Z",
"group": "Burst",
"search": "BBH",
"area_50": 1707.1232743595135,
"area_90": 5912.823730512672,
"duration": 0.045547,
"pipeline": "CWB",
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"classification": {},
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"sequence_num": 1,
"time_created": "2023-08-02T09:37:56Z",
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"external_coinc": null
},
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"published": "2023-08-02T09:37:56.898295Z",
"message_parser": "IGWN Alert Avro Parser v1",
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"created": "2023-08-02T09:37:56.898686Z",
"modified": "2023-08-02T09:37:56.914432Z",
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},
{
"id": 1779,
"topic": "igwn.gwalert",
"uuid": "f2510c3b-e926-48a9-95b1-0e4f1386d943",
"title": "S230802aj - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
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"event": {
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"time": "2023-08-02T09:36:26.629Z",
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"time_created": "2023-08-02T09:42:30Z",
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},
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"published": "2023-08-02T09:42:30.906579Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-08-02T09:42:30.906640Z",
"modified": "2023-08-02T09:42:30.913390Z",
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"targets": []
},
{
"id": 1780,
"topic": "hermes.message",
"uuid": "31f6946d-0f08-408a-8101-dd72b93427a9",
"title": "INTEGRAL follow-up of S230729a",
"submitter": "Volodymyr Savchenko",
"authors": "",
"data": {},
"message_text": "INTEGRAL follow-up of S230729a at 2023-07-29T02:49:26.000\n\n\nSPI-ACS excesses:\nat T0+3.58 FAP = 0.318\nat T0+-66.02 FAP = 0.695\n\n\n\n\nnext break in data in 41 hr: 2023-07-30T20:18:34, for 9.2 hr",
"published": "2023-08-02T09:46:31.523077Z",
"message_parser": "Hermes Message Parser v2",
"retracted": false,
"created": "2023-08-02T09:46:31.523095Z",
"modified": "2023-08-02T09:46:31.529132Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1781,
"topic": "hermes.message",
"uuid": "8dfb7b1c-437d-4bc8-9ae4-3df61ca2630e",
"title": "INTEGRAL follow-up of S230731at",
"submitter": "Volodymyr Savchenko",
"authors": "",
"data": {},
"message_text": "INTEGRAL follow-up of S230731at at 2023-07-31T22:49:19.000\n\n\nSPI-ACS excesses:\nat T0+-90.5 FAP = 0.146\nat T0+251.58 FAP = 0.198\nat T0+130.78 FAP = 0.362\nat T0+24.15 FAP = 0.577\nat T0+-35.0 FAP = 0.784\n\n\n\n\nnext break in data in 37 hr: 2023-08-02T12:11:10, for 9.2 hr",
"published": "2023-08-02T10:04:02.742431Z",
"message_parser": "Hermes Message Parser v2",
"retracted": false,
"created": "2023-08-02T10:04:02.742456Z",
"modified": "2023-08-02T10:04:02.749938Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1782,
"topic": "igwn.gwalert",
"uuid": "c41dcf6b-557b-46a1-9a0e-d5e06d3d5e60",
"title": "S230802aq - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
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"time_created": "2023-08-02T11:34:26Z",
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"published": "2023-08-02T11:34:27.625691Z",
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"created": "2023-08-02T11:34:27.625712Z",
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{
"id": 1783,
"topic": "igwn.gwalert",
"uuid": "44a7b4e4-7dfb-4684-bdd8-e6209d10acf9",
"title": "S230802aq - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
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"sequence_num": 2,
"time_created": "2023-08-02T11:39:01Z",
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{
"id": 1784,
"topic": "igwn.gwalert",
"uuid": "d803175a-004e-47c1-90c1-de9f53b010b5",
"title": "S230802aq - INITIAL",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
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"alert_type": "INITIAL",
"sequence_num": 3,
"time_created": "2023-08-02T12:33:40Z",
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},
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"published": "2023-08-02T12:33:40.839875Z",
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"retracted": false,
"created": "2023-08-02T12:33:40.839897Z",
"modified": "2023-08-02T12:33:40.849129Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1785,
"topic": "hermes.message",
"uuid": "085c65b8-aa14-495c-9ac5-1c026a50aac9",
"title": "INTEGRAL follow-up of S230730ap",
"submitter": "Volodymyr Savchenko",
"authors": "",
"data": {},
"message_text": "INTEGRAL follow-up of S230730ap at 2023-07-30T11:44:13.000\n\n\nSPI-ACS excesses:\nat T0+1.68 FAP = 0.097\nat T0+8.18 FAP = 0.222\nat T0+-59.15 FAP = 0.542\nat T0+-293.25 FAP = 0.599\nat T0+-173.05 FAP = 0.618\nat T0+-92.62 FAP = 0.619\nat T0+291.6 FAP = 0.63\n\n\n\n\nnext break in data in 8.6 hr: 2023-07-30T20:18:34, for 9.2 hr",
"published": "2023-08-02T12:40:59.673006Z",
"message_parser": "Hermes Message Parser v2",
"retracted": false,
"created": "2023-08-02T12:40:59.673026Z",
"modified": "2023-08-02T12:40:59.680872Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1786,
"topic": "igwn.gwalert",
"uuid": "b3e2ec84-3cbc-4c43-89d4-878c78d7d775",
"title": "S230802ar - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230802ar/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230802ar/view/"
},
"event": {
"far": 1.982950489290922e-06,
"time": "2023-08-02T12:50:09.011Z",
"group": "CBC",
"search": "AllSky",
"area_50": 8060.576168608048,
"area_90": 24218.657426213435,
"duration": null,
"pipeline": "gstlal",
"properties": {
"HasNS": 1.0,
"HasMassGap": 0.4640748044021836,
"HasRemnant": 0.9115446518067059
},
"instruments": [
"H1"
],
"significant": false,
"skymap_hash": "d8f6b99aa279dbc728553a6549a574ea",
"classification": {
"BBH": 8.483369080647005e-15,
"BNS": 1.2115042120114238e-15,
"NSBH": 0.04869603585512316,
"Terrestrial": 0.9513039641448672
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-08-02T12:50:49Z",
"superevent_id": "S230802ar",
"external_coinc": null
},
"message_text": "",
"published": "2023-08-02T12:50:50.016316Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-08-02T12:50:50.016337Z",
"modified": "2023-08-02T12:50:50.022534Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1787,
"topic": "gcn.circular",
"uuid": "1a5cb9a2-7160-4ad1-a17d-d409737eeafb",
"title": "LIGO/Virgo/KAGRA S230802aq: Identification of a GW compact binary merger candidate",
"submitter": "Hop gcn.circular",
"authors": "bolliand@fresnel.fr",
"data": {
"date": "23/08/02 12:53:54 GMT",
"from": "bolliand@fresnel.fr",
"title": "GCN CIRCULAR",
"number": "34314",
"subject": "LIGO/Virgo/KAGRA S230802aq: 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 S230802aq during\nreal-time processing of data from LIGO Hanford Observatory (H1) at\n2023-08-02 11:33:59.961 UTC (GPS time: 1375011257.961). The candidate\nwas found by the GstLAL [1] analysis pipeline.\n\nS230802aq is an event of interest because its false alarm rate, as\nestimated by the online analysis, is 2.2e-08 Hz, or about one in 1\nyear, 5 months. The event's properties can be found at this URL:\n\nhttps://gracedb.ligo.org/superevents/S230802aq\n\nThe classification of the GW signal, in order of descending\nprobability, is BBH (90%), NSBH (6%), Terrestrial (3%), or BNS (<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 57%. [2] Using the masses and spins inferred from the\nsignal, the probability of matter outside the final compact object\n(HasRemnant) is <1%. [2] 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 68%.\n\nTwo sky maps are available at this time and can be retrieved from the\nGraceDB event page:\n * bayestar.multiorder.fits,0, an initial localization generated by\nBAYESTAR [3], distributed via GCN notice about 26 seconds after the\ncandidate event time.\n * bayestar.multiorder.fits,1, an initial localization generated by\nBAYESTAR [3], distributed via GCN notice about 5 minutes after the\ncandidate event time.\n\nThe preferred sky map at this time is bayestar.multiorder.fits,1. For\nthe bayestar.multiorder.fits,1 sky map, the 90% credible region is\n24221 deg2. Marginalized over the whole sky, the a posteriori\nluminosity distance estimate is 444 +/- 156 Mpc (a posteriori mean +/-\nstandard deviation).\n\nFor further information about analysis methodology and the contents of\nthis alert, refer to the LIGO/Virgo/KAGRA Public Alerts User Guide\nhttps://emfollow.docs.ligo.org/userguide/.\n\n [1] Tsukada et al. arXiv:2305.06286 (2023) and Ewing et al.\narXiv:2305.05625 (2023)\n [2] Chatterjee et al. ApJ 896, 54 (2020)\n [3] Singer & Price PRD 93, 024013 (2016)\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjkwOTgwODQwLCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.9FDOO9wmEKNlWLadkxHIZdLDJ8F7QKR1UYVQc61cg50\n\n",
"published": "2023-08-02T12:54:05.494478Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-08-02T12:54:05.494496Z",
"modified": "2023-08-02T12:54:05.500820Z",
"nonlocalizedevents": [
{
"event_id": "S230802a"
}
],
"targets": []
},
{
"id": 1788,
"topic": "igwn.gwalert",
"uuid": "aa3104ee-f4b4-43cb-bbb2-f3f9744e0cab",
"title": "S230802ar - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230802ar/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230802ar/view/"
},
"event": {
"far": 1.982950489290922e-06,
"time": "2023-08-02T12:50:09.011Z",
"group": "CBC",
"search": "AllSky",
"area_50": 8060.576168608048,
"area_90": 24218.657426213435,
"duration": null,
"pipeline": "gstlal",
"properties": {
"HasNS": 1.0,
"HasMassGap": 0.4640748044021836,
"HasRemnant": 0.9115446518067059
},
"instruments": [
"H1"
],
"significant": false,
"skymap_hash": "d8f6b99aa279dbc728553a6549a574ea",
"classification": {
"BBH": 8.483369080647005e-15,
"BNS": 1.2115042120114238e-15,
"NSBH": 0.04869603585512316,
"Terrestrial": 0.9513039641448672
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-08-02T12:55:24Z",
"superevent_id": "S230802ar",
"external_coinc": null
},
"message_text": "",
"published": "2023-08-02T12:55:25.691710Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-08-02T12:55:25.691747Z",
"modified": "2023-08-02T12:55:25.713792Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1789,
"topic": "gcn.circular",
"uuid": "6c1e0507-9347-4e52-8078-ad2ccd23c914",
"title": "LIGO/Virgo/KAGRA S230802aq: Coverage and upper limits from MAXI/GSC observations",
"submitter": "Hop gcn.circular",
"authors": "Motoko Serino at Aoyama Gakuin U. <serino@phys.aoyama.ac.jp>",
"data": {
"date": "23/08/02 14:23:47 GMT",
"from": "Motoko Serino at Aoyama Gakuin U. <serino@phys.aoyama.ac.jp>",
"title": "GCN CIRCULAR",
"number": "34315",
"subject": "LIGO/Virgo/KAGRA S230802aq: Coverage and upper limits from MAXI/GSC observations"
},
"message_text": "T. Mihara, N. Kawai (RIKEN),\nH. Negoro, M. Nakajima (Nihon U.),\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 S230802aq at 2023-08-02 11:33:59 UTC (GCN #34314).\n\nAt the trigger time of S230802aq, the high-voltage of MAXI/GSC was on.\nThe instantaneous field of view of GSC at the GW trigger time covered 1% of the 90% credible region\nof the bayestar sky map, in which we found no significant new X-ray source.\nThe first one-orbit (92 min) scan observation with GSC after the event covered 62%\nof the 90% credible region of the bayestar skymap from 11:33:59 to 13:05:58 UTC (T0+0 to T0+5519 sec).\n\nNo significant new source was found in the region in the one-orbit scan observation.\nA typical 1-sigma averaged upper limit obtained in one scan observation\nis 20 mCrab at 2-20 keV.\n\nIf you require information about X-ray flux by MAXI/GSC at specific coordinates,\nplease contact the submitter of this circular by email.\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjkwOTg2MjMzLCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.XZOYfhQYGYyRTgwLFVbO9YHylaCQwwO4XGT7umgFp6w\n\n",
"published": "2023-08-02T14:23:58.357418Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-08-02T14:23:58.357442Z",
"modified": "2023-08-02T14:23:58.364661Z",
"nonlocalizedevents": [
{
"event_id": "S230802a"
}
],
"targets": []
},
{
"id": 1790,
"topic": "hermes.message",
"uuid": "0736356b-859a-4557-a0b5-c2296bd5e275",
"title": "INTEGRAL follow-up of S230802aq",
"submitter": "Volodymyr Savchenko",
"authors": "",
"data": {},
"message_text": "INTEGRAL follow-up of S230802aq at 2023-08-02T11:33:59.000\n\n\nSPI-ACS excesses:\nat T0+13.88 FAP = 0.402\nat T0+92.78 FAP = 0.46\nat T0+-3.22 FAP = 0.516\nat T0+251.91 FAP = 0.695\nat T0+-14.04 FAP = 0.782\nat T0+73.73 FAP = 0.865\n\n\n\n\nnext break in data in 0.62 hr: 2023-08-02T12:11:10, for 9.2 hr",
"published": "2023-08-02T14:48:44.201217Z",
"message_parser": "Hermes Message Parser v2",
"retracted": false,
"created": "2023-08-02T14:48:44.201244Z",
"modified": "2023-08-02T14:48:44.207850Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1791,
"topic": "gcn.circular",
"uuid": "a402a5ab-45f4-4c86-8b4b-28d97cdb8b6b",
"title": "LIGO/Virgo S230802aq: No counterpart candidates in INTEGRAL SPI-ACS prompt observation",
"submitter": "Hop gcn.circular",
"authors": "Volodymyr Savchenko at ISDC, University of Geneva; LASTRO, EPFL <volodymyr.savchenko@unige.ch>",
"data": {
"date": "23/08/02 15:00:06 GMT",
"from": "Volodymyr Savchenko at ISDC, University of Geneva; LASTRO, EPFL <volodymyr.savchenko@unige.ch>",
"title": "GCN CIRCULAR",
"number": "34316",
"subject": "LIGO/Virgo S230802aq: No counterpart candidates in INTEGRAL SPI-ACS prompt observation"
},
"message_text": "V. Savchenko, C. Ferrigno (ISDC/UniGE, Switzerland)\nJ. Rodi (IAPS-Roma, Italy)\nA. Coleiro (APC, France)\nS. Mereghetti (INAF IASF-Milano, Italy)\n\non behalf of the INTEGRAL multi-messenger collaboration:\nhttps://www.astro.unige.ch/cdci/integral-multimessenger-collaboration\n\nUsing INTEGRAL/SPI-ACS realtime data (following [1]) we have performed\na search for a prompt gamma-ray counterpart of S230802aq (GCN 34314).\n\nAt the time of the event (2023-08-02 11:33:59 UTC, hereafter T0), INTEGRAL was operating in nominal mode. The peak of the event localization probability was at an angle of 75 deg with respect to the spacecraft pointing axis. This orientation implies strongly suppressed (21% of optimal) response of ISGRI, somewhat suppressed (44% of optimal) response of IBIS/Veto, and near-optimal (89% of optimal) response of SPI-ACS.\nWe note that due to large localization uncertainty, sensitivity is strongly dependent on the actual source location within the uncertainty.\n\nThe background within +/-300 seconds around the event was rather stable (excess variance 1.2).\n\nWe have performed a search for any impulsive events in INTEGRAL SPI-ACS (as described in [2]) data.\n\nWe do not detect any significant counterparts and estimate a 3-sigma upper limit on the 75-2000 keV fluence of 1.8e-07 erg/cm^2 (within the 50% probability containment region of the source localization) for a burst lasting less than 1 s with a characteristic short GRB spectrum (an exponentially cut off power law with alpha=-0.5 and Ep`0 keV) occurring at any time in the interval within 300 s around T0. For a typical long GRB spectrum (Band function with alpha=-1, beta=-2.5, and Ep00 keV), the derived peak flux upper limit is ~1.5e-07 (4.2e-08) erg/cm^2/s at 1 s (8 s) time scale in 75-2000 keV energy range.\n\nWe report for completeness and in order of FAP, all excesses identified in the search region. We find: 6 likely background\nexcesses:\n\nT-T0 | scale | S/N | flux ( x 1e-06 erg/cm2/s) | FAP\n13.9 | 0.05 | 4.2 | 1.77 +/- 0.528 +/- 1.39 | 0.402\n92.8 | 1.15 | 3.6 | 0.323 +/- 0.106 +/- 0.253 | 0.46\n-3.22 | 0.05 | 3.3 | 1.4 +/- 0.523 +/- 1.1 | 0.516\n252 | 2.5 | 3.5 | 2.14 +/- 0.72 +/- 1.68 | 0.695\n-14 | 0.1 | 3.6 | 1.08 +/- 0.367 +/- 0.843 | 0.782\n73.7 | 0.35 | 3.8 | 0.606 +/- 0.194 +/- 0.475 | 0.865\n\nNote that FAP estimates (especially at timescales above 2s) may be possibly further affected by enhanced non-stationary local background noise. This list excludes any excesses for which FAP is close to unity.\n\nWe note that no independent IBAS alerts happened in the viscinity.\n\n\nAll results quoted are preliminary.\n\nThis circular is an official product of the INTEGRAL Multi-Messenger team.\n\nNote that we send GCNs Circulars only when one of the following\nconditions is met: merger contains at least one neutron star, a\nsingificant counterpart is reported.\n\n[1] Savchenko et al. 2017, A&A 603, A46 [2] Savchenko et al. 2012, A&A\n541A, 122S\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjkwOTg4NDEyLCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.w-BCGdD9qFmICU4KuGW_ZnPZzDZYF5ehu2wnXimvYbU\n\n",
"published": "2023-08-02T15:00:22.797299Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-08-02T15:00:22.797316Z",
"modified": "2023-08-02T15:00:22.803973Z",
"nonlocalizedevents": [
{
"event_id": "S230802a"
}
],
"targets": []
},
{
"id": 1792,
"topic": "gcn.circular",
"uuid": "c42429f6-7eee-42e5-82bf-9a0d142c2d10",
"title": "GRB 230802A: Enhanced Swift-XRT position",
"submitter": "Hop gcn.circular",
"authors": "Phil Evans at U of Leicester <pae9@star.le.ac.uk>",
"data": {
"date": "23/08/02 20:19:42 GMT",
"from": "Phil Evans at U of Leicester <pae9@star.le.ac.uk>",
"title": "GCN CIRCULAR",
"number": "34317",
"subject": "GRB 230802A: Enhanced Swift-XRT position"
},
"message_text": "M.R. Goad, J.P. Osborne, A.P. Beardmore and P.A. Evans (U. Leicester)\nreport on behalf of the Swift-XRT team.\n\nUsing 1180 s of XRT Photon Counting mode data and 1 UVOT\nimages for GRB 230802A, 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 = 76.23985, +19.56066 which is equivalent\nto:\n\nRA (J2000): 05h 04m 57.56s\nDec (J2000): +19d 33' 38.4\"\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.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjkxMDA3NTg4LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.gXSWWnu01gZIreRx9TApT4aDZ3geTSzq_cteRt3WFws\n\n",
"published": "2023-08-02T20:19:56.325177Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-08-02T20:19:56.325198Z",
"modified": "2023-08-02T20:19:56.333112Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1793,
"topic": "gcn.circular",
"uuid": "22333e6d-265f-4984-af09-81fe3762b1cf",
"title": "GRB 230802A: Swift-XRT refined Analysis",
"submitter": "Hop gcn.circular",
"authors": "Phil Evans at U of Leicester <pae9@star.le.ac.uk>",
"data": {
"date": "23/08/02 20:28:29 GMT",
"from": "Phil Evans at U of Leicester <pae9@star.le.ac.uk>",
"title": "GCN CIRCULAR",
"number": "34318",
"subject": "GRB 230802A: Swift-XRT refined Analysis"
},
"message_text": "A.P. Beardmore (U. Leicester), B. Sbarufatti (INAF-OAB), A. D'Ai\n(INAF-IASFPA), A. Melandri (INAF-OAR), J. D. Gropp (PSU), S. Dichiara\n(PSU), J.A. Kennea (PSU), J.P. Osborne (U. Leicester) and P.A. Evans\nreport on behalf of the Swift-XRT team:\n\nWe have analysed 7.9 ks of XRT data for GRB 230802A, from 52 s to 40.1\nks after the BAT trigger. The data comprise 386 s in Windowed Timing\n(WT) mode (the first 10 s were taken while Swift was slewing) with the\nremainder in Photon Counting (PC) mode.\n\nThe light curve can be modelled with a series of power-law decays. The\ninitial decay index is alpha=0.4 (+/-0.4). At T+345 s the decay\nsteepens to an alpha of 2.5 (+0.4, -0.3) before breaking again at\nT+1364 s to a final decay with index alpha=1.26 (+0.16, -0.30).\n\nA spectrum formed from the WT mode data can be fitted with an absorbed\npower-law with a photon spectral index\tof 1.02 (+/-0.04). The\nbest-fitting absorption column is 6.5 (+/-0.5) x 10^21 cm^-2, in\nexcess of the Galactic value of 3.4 x 10^21 cm^-2 (Willingale et al.\n2013). The PC mode spectrum has a photon index of 1.66 (+0.22, -0.21)\nand a best-fitting absorption column of 4.5 (+1.5, -1.1) x 10^21 cm^-2.\nThe counts to observed (unabsorbed) 0.3-10 keV flux conversion factor\ndeduced from this spectrum is 4.9 x 10^-11 (6.5 x 10^-11) erg cm^-2\ncount^-1.\n\nA summary of the PC-mode spectrum is thus:\nTotal column:\t 4.5 (+1.5, -1.1) x 10^21 cm^-2\nGalactic foreground: 3.4 x 10^21 cm^-2\nExcess significance: <1.6 sigma\nPhoton index:\t 1.66 (+0.22, -0.21)\n\nIf the light curve continues to decay with a power-law decay index of\n1.26, the count rate at T+24 hours will be 1.5 x 10^-3 count s^-1,\ncorresponding to an observed (unabsorbed) 0.3-10 keV flux of 7.2 x\n10^-14 (9.7 x 10^-14) erg cm^-2 s^-1.\n\nThe results of the XRT-team automatic analysis are available at\nhttp://www.swift.ac.uk/xrt_products/01182085.\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.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjkxMDA4MTE1LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.JgnXilXrfYt_OApmADEPYfx96FVn8wN2EacvJtp50pE\n\n",
"published": "2023-08-02T20:28:40.331275Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-08-02T20:28:40.331298Z",
"modified": "2023-08-02T20:28:40.338329Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1794,
"topic": "gcn.circular",
"uuid": "d78572a4-9dfb-4019-b14b-d9dd2b87b748",
"title": "LIGO/Virgo/KAGRA S230802aq: Upper limits from Fermi-GBM Observations",
"submitter": "Hop gcn.circular",
"authors": "Joshua Wood at NASA/MSFC <joshua.r.wood@nasa.gov>",
"data": {
"date": "23/08/02 20:57:42 GMT",
"from": "Joshua Wood at NASA/MSFC <joshua.r.wood@nasa.gov>",
"title": "GCN CIRCULAR",
"number": "34319",
"subject": "LIGO/Virgo/KAGRA S230802aq: Upper limits from Fermi-GBM Observations"
},
"message_text": "J. Wood (NASA/MSFC) and J. Mangan (CNRS/IJCLab) report on behalf of the Fermi-GBM Team:\n\nFor S230802aq (GCN 34314) and using the initial bayestar skymap, Fermi-GBM was observing 59.4% of the localization probability at event time.\n\nThere was no Fermi-GBM onboard trigger around the event time of the LIGO/Virgo/KAGRA (LVK) detection of GW trigger S230802aq. An automated, blind search for short gamma-ray bursts below the onboard triggering threshold in Fermi-GBM also identified no counterpart candidates. The GBM targeted search, the most sensitive, coherent search for GRB-like signals, was run from +/-30 s around merger time, and also identified no counterpart candidates.\n\nPart of the LVK localization region is behind the Earth for Fermi, located at an RA35.9, Dec%.3 with a radius of 67.6 degrees. We therefore set upper limits on impulsive gamma-ray emission for the GW localization region visible to Fermi at merger time. Using the representative soft, normal, and hard GRB-like templates described in arXiv:1612.02395, we set the following 3 sigma flux upper limits over 10-1000 keV, weighted by GW localization probability (in units of 10^-7 erg/s/cm^2):\n\nTimescale Soft Normal Hard\n------------------------------------\n0.128 s: 1.2 2.1 4.6\n1.024 s: 0.3 0.6 1.3\n8.192 s: 0.1 0.1 0.2\n\nAssuming the a posteriori mean luminosity distance of 444 Mpc from the GW detection, we estimate the following intrinsic luminosity upper limits over the 1 keV-10 MeV energy range (in units of 10^48 erg/s):\n\nTimescale Soft Normal Hard\n------------------------------------\n0.128s: 4.3 7.0 25.\n1.024s: 1.0 2.1 7.1\n8.192s: 0.3 0.4 1.3\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjkxMDA5ODY4LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.v5Psk3kSHLoJNpP1szsSpGOlqYZ1xaO_Pjv9Ho9XR3w\n\n",
"published": "2023-08-02T20:57:54.083247Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-08-02T20:57:54.083280Z",
"modified": "2023-08-02T20:57:54.091746Z",
"nonlocalizedevents": [
{
"event_id": "S230802a"
}
],
"targets": []
},
{
"id": 1795,
"topic": "gcn.circular",
"uuid": "2cb41977-a8c7-4d5a-b2ef-7b3a0c28e1e1",
"title": "GRB 230802A: BOOTES-5/JGT optical upper limit",
"submitter": "Hop gcn.circular",
"authors": "Youdong HU at IAA-CSIC <huyoudong072@hotmail.com>",
"data": {
"date": "23/08/02 21:00:30 GMT",
"from": "Youdong HU at IAA-CSIC <huyoudong072@hotmail.com>",
"title": "GCN CIRCULAR",
"number": "34320",
"subject": "GRB 230802A: BOOTES-5/JGT optical upper limit"
},
"message_text": "E. Fernandez-Garcia, Y.-D. Hu, A. J. Castro-Tirado, I. Perez-Garcia, M.D. Caballero-Garcia, R. Sanchez-Ramirez, S. Guziy (IAA-CSIC), D. Hiriart and W. H. Lee (UNAM), C. J. Perez del Pulgar (UMA) and I. M. Carrasco-Garcia (SMA) and I. H. Park (SKKU), on behalf of a larger collaboration, report:\n\nFollowing the detection of GRB 230802A by Swift (Klingler et al. GCNC 34313), the BOOTES-5/JGT 0.6m robotic telescope at Observatorio Astronomico Nacional in San Pedro Martir (Mexico) automatically observed the GRB location starting on Aug. 02, 11:41 UT (~ 4.9 h after trigger). No new optical source is detected on the co-added image (13 x 60 s, clear filter) within the enhanced Swift/XRT error region (Goad et al. GCNC 34317) down to 19.7 mag, which is consistent with the limit reported by UVOT (Klingler et al. GCNC 34313).\n\nWe thank the staff at Observatorio Astronomico Nacional in San Pedro Martir for their excellent support.\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjkxMDEwMDMzLCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.XLVTGH_0ezlqTgKKQ77UkMazbB9ukLO9FwjKaHNIdaM\n\n",
"published": "2023-08-02T21:00:38.591605Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-08-02T21:00:38.591624Z",
"modified": "2023-08-02T21:00:38.597813Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1796,
"topic": "gcn.circular",
"uuid": "52407df9-6a95-4f05-8f1b-a14423ea2795",
"title": "Swift GRB 230802A: 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": "23/08/03 01:19:09 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "34321",
"subject": "Swift GRB 230802A: 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 Swift GRB 230802A ( N. J. Klingler et al., GCN 34313) errorbox 65651 sec after notice time and 65669 sec after trigger time at 2023-08-03 01:04:55 UT, with upper limit up to 15.3 mag. Observations started at twilight. The observations began at zenith distance = 65 deg. The sun altitude is -13.8 deg.\n\nThe galactic latitude b = -12 deg., longitude l = 183 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/observ.php?id\"48891\n\nWe obtain a following upper limits.\n\nTmid-T0 | Site |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____|_______|______|________\n\n 65759 | MASTER-Tavrida | C | 180 | 15.3 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjkxMDI1NTU1LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.ARajf0lxxXZazNdr52QSDp1TNaSsR6GKWTdEnrzE9QI\n\n",
"published": "2023-08-03T01:19:21.180548Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-08-03T01:19:21.180569Z",
"modified": "2023-08-03T01:19:21.189331Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1797,
"topic": "gcn.circular",
"uuid": "a5eafd44-e9e9-42df-9d09-f631c5735cbd",
"title": "GRB 230802B: Fermi GBM Final Localization",
"submitter": "Hop gcn.circular",
"authors": "Joshua Wood at NASA/MSFC <joshua.r.wood@nasa.gov>",
"data": {
"date": "23/08/03 01:25:55 GMT",
"from": "Joshua Wood at NASA/MSFC <joshua.r.wood@nasa.gov>",
"title": "GCN CIRCULAR",
"number": "34322",
"subject": "GRB 230802B: Fermi GBM Final Localization"
},
"message_text": "The Fermi GBM team reports the detection of a likely LONG GRB\n\n\"At 23:58:47.92 UT on 02 August 2023, the Fermi Gamma-ray Burst Monitor (GBM)\ntriggered and located GRB 230802B (trigger 712713532/230802999).\n\nThe on-ground calculated location, using the Fermi GBM trigger data,\nis RA = 22.22, Dec = 9.62 (J2000 degrees, equivalent to J2000 1h 28m, +9d 37'),\nwith a statistical uncertainty of 5.88 degrees.\n\nThe angle from the Fermi LAT boresight is 77 degrees.\n\nThe skymap can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn230802999/quicklook/glg_skymap_all_bn230802999.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/bn230802999/quicklook/glg_healpix_all_bn230802999.fit\n\nThe GBM light curve can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn230802999/quicklook/glg_lc_medres34_bn230802999.gif\"\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjkxMDI1OTYwLCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.dl-WN6PkobQFFhe_UdgoHL4ZQ_FK8P3nb4ZBOofIoM0\n\n",
"published": "2023-08-03T01:26:06.379387Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-08-03T01:26:06.379408Z",
"modified": "2023-08-03T01:26:06.387908Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1798,
"topic": "gcn.circular",
"uuid": "80fb4223-7a03-47c1-aae9-b608cfdf30fc",
"title": "Fermi trigger No 712651827: 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": "23/08/03 01:31:01 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "34323",
"subject": "Fermi trigger No 712651827: 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 GRB230802.28 (trigger No 712651827,04h 34m 04.01s , +12d 28m 00.1s, R=9.1167) errorbox 65639 sec after notice time and 65673 sec after trigger time at 2023-08-03 01:04:55 UT, with upper limit up to 15.3 mag. Observations started at twilight. The observations began at zenith distance = 65 deg. The sun altitude is -13.8 deg.\n\nThe galactic latitude b = -22 deg., longitude l = 184 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/observ.php?id\"48906\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 65763 | 2023-08-03 01:04:55 | MASTER-Tavrida | (05h 01m 53.77s , +19d 43m 25.9s) | C | 180 | 15.3 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjkxMDI2MjY0LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.h14jGf-TL2vj7_w9h8eSdb8LuqbmpU7Mxu_Y5Td5BRk\n\n",
"published": "2023-08-03T01:31:09.285384Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-08-03T01:31:09.285403Z",
"modified": "2023-08-03T01:31:09.291852Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1799,
"topic": "gcn.circular",
"uuid": "a8bce3c4-3e50-46ea-8930-5b92daba5138",
"title": "Fermi trigger No 712713532: 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": "23/08/03 01:31:25 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "34324",
"subject": "Fermi trigger No 712713532: 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 GRB230802.99 (trigger No 712713532,01h 28m 52.80s , +09d 37m 12.0s, R=5.88) errorbox 33 sec after notice time and 66 sec after trigger time at 2023-08-02 23:59:54 UT, with upper limit up to 18.6 mag. The observations began at zenith distance = 53 deg. The sun altitude is -21.4 deg.\n\nMASTER-SAAO robotic telescope located in South Africa (South African Astronomical Observatory) started inspect of the Fermi GRB230802.99 errorbox 578 sec after notice time and 611 sec after trigger time at 2023-08-03 00:08:59 UT, with upper limit up to 18.0 mag. The observations began at zenith distance = 62 deg. The sun altitude is -66.3 deg.\n\nThe galactic latitude b = -52 deg., longitude l = 139 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/observ.php?id\"49252\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 72 | 2023-08-02 23:59:54 | MASTER-Tavrida | (01h 58m 42.33s , +07d 15m 33.4s) | C | 10 | 16.6 |\n 94 | 2023-08-03 00:00:11 | MASTER-Tavrida | (01h 58m 44.94s , +07d 17m 12.7s) | C | 20 | 17.3 |\n 121 | 2023-08-03 00:00:38 | MASTER-Tavrida | (01h 58m 38.43s , +07d 16m 24.2s) | C | 20 | 17.3 |\n 152 | 2023-08-03 00:01:05 | MASTER-Tavrida | (01h 58m 38.24s , +07d 17m 24.3s) | C | 30 | 17.6 |\n 195 | 2023-08-03 00:01:43 | MASTER-Tavrida | (01h 58m 45.90s , +07d 16m 24.2s) | C | 40 | 17.8 |\n 244 | 2023-08-03 00:02:31 | MASTER-Tavrida | (01h 58m 38.80s , +07d 15m 24.1s) | C | 40 | 17.8 |\n 296 | 2023-08-03 00:03:18 | MASTER-Tavrida | (01h 58m 45.15s , +07d 15m 44.3s) | C | 50 | 18.1 |\n 365 | 2023-08-03 00:04:18 | MASTER-Tavrida | (01h 58m 42.05s , +07d 17m 21.2s) | C | 70 | 18.2 |\n 646 | 2023-08-03 00:08:33 | MASTER-Tavrida | (01h 26m 04.48s , +09d 43m 04.3s) | C | 120 | 18.0 |\n 641 | 2023-08-03 00:08:59 | MASTER-SAAO | (01h 27m 20.59s , +09d 19m 53.1s) | C | 60 | 17.1 |\n 701 | 2023-08-03 00:08:59 | MASTER-SAAO | (01h 27m 20.58s , +09d 19m 53.1s) | C | 180 | 18.0 | Coadd\n 641 | 2023-08-03 00:08:59 | MASTER-SAAO | (01h 26m 30.45s , +09d 21m 11.6s) | C | 60 | 16.7 |\n 701 | 2023-08-03 00:08:59 | MASTER-SAAO | (01h 26m 30.45s , +09d 21m 11.6s) | C | 180 | 17.5 | Coadd\n 732 | 2023-08-03 00:10:30 | MASTER-SAAO | (01h 27m 21.60s , +09d 20m 54.5s) | C | 60 | 17.4 |\n 732 | 2023-08-03 00:10:30 | MASTER-SAAO | (01h 26m 31.51s , +09d 22m 12.0s) | C | 60 | 17.4 |\n 784 | 2023-08-03 00:10:42 | MASTER-Tavrida | (01h 25m 57.88s , +09d 42m 17.1s) | C | 140 | 18.3 |\n 812 | 2023-08-03 00:11:49 | MASTER-SAAO | (01h 27m 27.50s , +09d 19m 55.4s) | C | 60 | 17.2 |\n 812 | 2023-08-03 00:11:49 | MASTER-SAAO | (01h 26m 37.38s , +09d 21m 12.9s) | C | 60 | 16.8 |\n 946 | 2023-08-03 00:13:09 | MASTER-Tavrida | (01h 25m 57.57s , +09d 43m 16.5s) | C | 170 | 18.5 |\n 903 | 2023-08-03 00:13:20 | MASTER-SAAO | (01h 26m 31.56s , +09d 20m 12.9s) | C | 60 | 16.7 |\n 903 | 2023-08-03 00:13:20 | MASTER-SAAO | (01h 27m 21.67s , +09d 18m 55.8s) | C | 60 | 17.0 |\n 1131 | 2023-08-03 00:16:09 | MASTER-Tavrida | (01h 26m 04.51s , +09d 42m 15.8s) | C | 180 | 18.6 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjkxMDI2Mjg3LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.Ce2aSDzrxrDEe9cfyMF5xVnNLVlkrtgqPMwM7HelVjI\n\n",
"published": "2023-08-03T01:31:31.333423Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-08-03T01:31:31.333443Z",
"modified": "2023-08-03T01:31:31.339533Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 1800,
"topic": "gcn.circular",
"uuid": "d25974e0-b7aa-4f6d-8b63-3bcbc67e79c7",
"title": "GRB 230803A: 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": "23/08/03 01:37:47 GMT",
"from": "Fermi GBM Team at MSFC/Fermi-GBM <do_not_reply@GIOC.nsstc.nasa.gov>",
"title": "GCN CIRCULAR",
"number": "34325",
"subject": "GRB 230803A: Fermi GBM Final Real-time Localization"
},
"message_text": "The Fermi GBM team reports the detection of a likely LONG GRB\n\nAt 01:27:08 UT on 3 Aug 2023, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 230803A (trigger 712718833.154354 / 230803061).\n\nThe on-ground calculated location, using the Fermi GBM trigger data, is RA = 158.4, Dec = -64.4 (J2000 degrees, equivalent to J2000 10h 33m, -64d 24'), with a statistical uncertainty of 3.3 degrees.\n\nThe angle from the Fermi LAT boresight is 66.0 degrees.\n\nThe skymap can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn230803061/quicklook/glg_skymap_all_bn230803061.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/bn230803061/quicklook/glg_healpix_all_bn230803061.fit\n\nThe GBM light curve can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn230803061/quicklook/glg_lc_medres34_bn230803061.gif\n\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjkxMDI2NjcxLCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.R0yTVkIjMk0-yBFZr0yq-DlGB7Nff_rWFUwXrR61AJQ\n\n",
"published": "2023-08-03T01:37:57.327130Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-08-03T01:37:57.327162Z",
"modified": "2023-08-03T01:37:57.333740Z",
"nonlocalizedevents": [],
"targets": []
}
]
}
