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"group": "CBC",
"search": "AllSky",
"area_50": 792.5030244906445,
"area_90": 3236.31629593426,
"duration": null,
"pipeline": "spiir",
"properties": {
"HasNS": 0.7660884916943602,
"HasMassGap": 0.040924531407290014,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "5ca255a736579dffebadf3ad8acc1ee3",
"classification": {
"BBH": 0.013138379566937664,
"BNS": 0.0,
"NSBH": 0.03773145541681188,
"Terrestrial": 0.9491301650162505
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-07-05T14:43:44Z",
"superevent_id": "S230705bm",
"external_coinc": null
},
"message_text": "",
"published": "2023-07-05T14:43:46.286322Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-07-05T14:43:46.286348Z",
"modified": "2023-07-05T14:43:46.292345Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 914,
"topic": "hermes.message",
"uuid": "082c5d35-e128-4bc6-b6ae-b7bbd3103fce",
"title": "INTEGRAL follow-up of S230705bm",
"submitter": "Volodymyr Savchenko",
"authors": "",
"data": {},
"message_text": "INTEGRAL follow-up of S230705bm at 2023-07-05T14:38:46.000\n\n\nSPI-ACS excesses:\nat T0+23.3 FAP = 0.073\nat T0+-4.85 FAP = 0.176\nat T0+-254.88 FAP = 0.188\nat T0+-20.78 FAP = 0.377\nat T0+5.72 FAP = 0.445\nat T0+-195.43 FAP = 0.625\nat T0+148.45 FAP = 0.96\n\n\n\n\nnext break in data in 31 hr: 2023-07-06T21:41:08, for 9.2 hr",
"published": "2023-07-05T14:51:26.148139Z",
"message_parser": "Hermes Message Parser v2",
"retracted": false,
"created": "2023-07-05T14:51:26.148158Z",
"modified": "2023-07-05T14:51:26.153766Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 915,
"topic": "igwn.gwalert",
"uuid": "5f8b072e-23bd-40a9-9044-91c37d3a8dd9",
"title": "S230705bs - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230705bs/files/cwb.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230705bs/view/"
},
"event": {
"far": 8.62634e-06,
"time": "2023-07-05T16:11:02.357Z",
"group": "Burst",
"search": "AllSky",
"area_50": 14.267991968589834,
"area_90": 43.64326955098067,
"duration": 0.009971,
"pipeline": "CWB",
"properties": {},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "b224b4a597dddf05fb0f713619d59dc4",
"classification": {},
"skymap_version": 0,
"central_frequency": 45.489952
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-07-05T16:12:20Z",
"superevent_id": "S230705bs",
"external_coinc": null
},
"message_text": "",
"published": "2023-07-05T16:12:20.558707Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-07-05T16:12:20.558729Z",
"modified": "2023-07-05T16:12:20.566374Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 916,
"topic": "igwn.gwalert",
"uuid": "12ee0efb-af2d-4f01-83d4-37c7d7f1ab34",
"title": "S230705bs - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230705bs/files/cwb.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230705bs/view/"
},
"event": {
"far": 8.62634e-06,
"time": "2023-07-05T16:11:02.357Z",
"group": "Burst",
"search": "AllSky",
"area_50": 14.267991968589834,
"area_90": 43.64326955098067,
"duration": 0.009971,
"pipeline": "CWB",
"properties": {},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "b224b4a597dddf05fb0f713619d59dc4",
"classification": {},
"skymap_version": 0,
"central_frequency": 45.489952
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-07-05T16:16:56Z",
"superevent_id": "S230705bs",
"external_coinc": null
},
"message_text": "",
"published": "2023-07-05T16:16:57.099064Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-07-05T16:16:57.099088Z",
"modified": "2023-07-05T16:16:57.104873Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 917,
"topic": "hermes.message",
"uuid": "0cacb0d8-0222-4d3b-a75b-eafb0f725fc6",
"title": "INTEGRAL follow-up of S230705bs",
"submitter": "Volodymyr Savchenko",
"authors": "",
"data": {},
"message_text": "INTEGRAL follow-up of S230705bs at 2023-07-05T16:11:02.000\n\n\nSPI-ACS excesses:\nat T0+-36.67 FAP = 0.16\nat T0+-28.47 FAP = 0.278\nat T0+-12.95 FAP = 0.321\nat T0+101.13 FAP = 0.347\nat T0+17.7 FAP = 0.569\nat T0+-150.32 FAP = 0.828\nat T0+-11.55 FAP = 0.869\nat T0+126.78 FAP = 0.931\nat T0+36.63 FAP = 0.986\n\n\n\n\nnext break in data in 30 hr: 2023-07-06T21:41:08, for 9.2 hr",
"published": "2023-07-05T16:23:36.739917Z",
"message_parser": "Hermes Message Parser v2",
"retracted": false,
"created": "2023-07-05T16:23:36.739936Z",
"modified": "2023-07-05T16:23:36.745778Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 918,
"topic": "igwn.gwalert",
"uuid": "e19bd94b-aa48-4353-a288-eb0454186454",
"title": "S230705bx - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230705bx/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230705bx/view/"
},
"event": {
"far": 9.313218285365371e-06,
"time": "2023-07-05T17:52:26.939Z",
"group": "CBC",
"search": "AllSky",
"area_50": 665.9795074750609,
"area_90": 2537.1846894733576,
"duration": null,
"pipeline": "pycbc",
"properties": {
"HasNS": 1.0,
"HasMassGap": 0.5762241541587168,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "4eae2833d049ccb892de004d98c4ddec",
"classification": {
"BBH": 0.0006255812274450312,
"BNS": 0.0,
"NSBH": 0.0040549382589031326,
"Terrestrial": 0.9953194805136518
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-07-05T17:52:55Z",
"superevent_id": "S230705bx",
"external_coinc": null
},
"message_text": "",
"published": "2023-07-05T17:52:56.584069Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-07-05T17:52:56.584091Z",
"modified": "2023-07-05T17:52:56.591684Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 919,
"topic": "igwn.gwalert",
"uuid": "27241cfd-2231-484d-a096-fb260279e1ab",
"title": "S230705bx - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230705bx/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230705bx/view/"
},
"event": {
"far": 9.313218285365371e-06,
"time": "2023-07-05T17:52:26.939Z",
"group": "CBC",
"search": "AllSky",
"area_50": 665.9795074750609,
"area_90": 2537.1846894733576,
"duration": null,
"pipeline": "pycbc",
"properties": {
"HasNS": 1.0,
"HasMassGap": 0.5762241541587168,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "4eae2833d049ccb892de004d98c4ddec",
"classification": {
"BBH": 0.0006255812274450312,
"BNS": 0.0,
"NSBH": 0.0040549382589031326,
"Terrestrial": 0.9953194805136518
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-07-05T17:57:30Z",
"superevent_id": "S230705bx",
"external_coinc": null
},
"message_text": "",
"published": "2023-07-05T17:57:31.121723Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-07-05T17:57:31.121747Z",
"modified": "2023-07-05T17:57:31.127779Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 920,
"topic": "hermes.message",
"uuid": "c558ecaf-a211-49a9-ae09-707a2f2aab65",
"title": "INTEGRAL follow-up of S230705bx",
"submitter": "Volodymyr Savchenko",
"authors": "",
"data": {},
"message_text": "INTEGRAL follow-up of S230705bx at 2023-07-05T17:52:26.000\n\n\nSPI-ACS excesses:\nat T0+-32.27 FAP = 0.039\nat T0+-117.32 FAP = 0.13\nat T0+-48.12 FAP = 0.218\nat T0+-30.09 FAP = 0.23\nat T0+4.08 FAP = 0.458\n\n\n\n\nnext break in data in 28 hr: 2023-07-06T21:41:08, for 9.2 hr",
"published": "2023-07-05T18:05:05.039986Z",
"message_parser": "Hermes Message Parser v2",
"retracted": false,
"created": "2023-07-05T18:05:05.040015Z",
"modified": "2023-07-05T18:05:05.046818Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 921,
"topic": "gcn.circular",
"uuid": "e05a5531-d0cd-4699-b5cb-4d34515ce6aa",
"title": "ZTF23aaoohpy/AT2023lcr: AMI-LA radio detection",
"submitter": "Hop gcn.circular",
"authors": "Assaf Horesh at Hebrew U, Jerusalem <assafh@mail.huji.ac.il>",
"data": {
"date": "23/07/05 18:55:59 GMT",
"from": "Assaf Horesh at Hebrew U, Jerusalem <assafh@mail.huji.ac.il>",
"title": "GCN CIRCULAR",
"number": "34145",
"subject": "ZTF23aaoohpy/AT2023lcr: AMI-LA radio detection"
},
"message_text": "Assaf Horesh (HUJI), Itai Sfaradi (HUJI), Lauren Rhodes (Oxford), Joe Bright (Oxford), Rob Fender (Oxford), Dave Green (Cambridge), David Titterington (Cambridge)\n\nWe report the detection of radio emission from the fast fading red transient ZTF23aaoohpy/AT2023lcr (Swain et al., GCN 34022) using the AMI-LA telescope.\n\nWe observed the field of AT 2023lcr with the Arcminute Microkelvin Imager âLarge Array (AMI-LA) for 4 hours on the 2023-06-21, with a central frequency of 15.5 GHz. The flux standard 3c286 was used to calibrate the bandpass response and flux scale of the AMI-LA and J1613+3412 was used as an interleaved complex gain calibrator.\n\nA point source is detected in the AMI-LA image at RA = 16:31:37.30 +/- 0.06 s, Dec = +26:22:01.0 +/- 3.0 arcsec, consistent with the reported position of AT 2023lcr. The source is detected at a flux density of 0.50 +/- 0.05 mJy.\n\nWe plan to perform follow-up observations with the AMI-LA, and encourage further high cadence multi frequency radio observations with other facilities.\n\nWe thank the staff of MRAO for scheduling and performing this observation.\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg4NTgzMzY1LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.SmzpGKK_lz5TFy2V5W6d6IQYQS1hz2Lsn6ZObqjyjHs\n\n",
"published": "2023-07-05T18:56:14.727421Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-07-05T18:56:14.727440Z",
"modified": "2023-07-05T18:56:14.734674Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 922,
"topic": "igwn.gwalert",
"uuid": "429eac39-d145-468d-956c-c6e48cce8f55",
"title": "S230705cb - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230705cb/files/cwb.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230705cb/view/"
},
"event": {
"far": 1.23779e-05,
"time": "2023-07-05T23:33:25.912Z",
"group": "Burst",
"search": "BBH",
"area_50": 3766.7498797077164,
"area_90": 12228.508410726705,
"duration": 0.023836,
"pipeline": "CWB",
"properties": {},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "28f066737fae1e96eed973b9b0c8767e",
"classification": {},
"skymap_version": 0,
"central_frequency": 28.015661
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-07-05T23:34:45Z",
"superevent_id": "S230705cb",
"external_coinc": null
},
"message_text": "",
"published": "2023-07-05T23:34:46.840649Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-07-05T23:34:46.840673Z",
"modified": "2023-07-05T23:34:46.847426Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 923,
"topic": "igwn.gwalert",
"uuid": "4922bd93-8e24-4958-8144-c103d9518770",
"title": "S230705cb - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230705cb/files/cwb.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230705cb/view/"
},
"event": {
"far": 1.23779e-05,
"time": "2023-07-05T23:33:25.912Z",
"group": "Burst",
"search": "BBH",
"area_50": 3766.7498797077164,
"area_90": 12228.508410726705,
"duration": 0.023836,
"pipeline": "CWB",
"properties": {},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "28f066737fae1e96eed973b9b0c8767e",
"classification": {},
"skymap_version": 0,
"central_frequency": 28.015661
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-07-05T23:39:21Z",
"superevent_id": "S230705cb",
"external_coinc": null
},
"message_text": "",
"published": "2023-07-05T23:39:22.142516Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-07-05T23:39:22.142539Z",
"modified": "2023-07-05T23:39:22.148325Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 924,
"topic": "hermes.message",
"uuid": "f3bdc0e3-8188-41a6-acb5-7aef76e42ae6",
"title": "INTEGRAL follow-up of S230705cb",
"submitter": "Volodymyr Savchenko",
"authors": "",
"data": {},
"message_text": "INTEGRAL follow-up of S230705cb at 2023-07-05T23:33:25.000\n\n\nSPI-ACS excesses:\nat T0+47.1 FAP = 0.093\nat T0+-71.25 FAP = 0.103\nat T0+-2.2 FAP = 0.227\nat T0+16.15 FAP = 0.376\nat T0+4.17 FAP = 0.814\nat T0+59.97 FAP = 0.819\n\n\n\n\nnext break in data in 22 hr: 2023-07-06T21:41:08, for 9.2 hr",
"published": "2023-07-05T23:45:56.123057Z",
"message_parser": "Hermes Message Parser v2",
"retracted": false,
"created": "2023-07-05T23:45:56.123087Z",
"modified": "2023-07-05T23:45:56.135850Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 925,
"topic": "gcn.circular",
"uuid": "100ce8a4-103d-4ea8-b7e7-fde380434006",
"title": "LIGO/Virgo/KAGRA S230627c: GECKO optical follow-up observations of host galaxy candidates and ZTF23aaptsuy/AT2023lxu",
"submitter": "Hop gcn.circular",
"authors": "Gregory Paek at Seoul National University <gregorypaek94@gmail.com>",
"data": {
"date": "23/07/06 00:01:29 GMT",
"from": "Gregory Paek at Seoul National University <gregorypaek94@gmail.com>",
"title": "GCN CIRCULAR",
"number": "34146",
"subject": "LIGO/Virgo/KAGRA S230627c: GECKO optical follow-up observations of host galaxy candidates and ZTF23aaptsuy/AT2023lxu"
},
"message_text": "Gregory S.-H. Paek, Myungshin Im, Jinguk Seo, Hyeonho Choi, Hongjae Moon (SNUARC/SNU), Joh-Na Yoon (CBNU), Sumin Lee, Changgon Kim, Soojong Pak (KHU), and Hyun-Il Sung (KASI), on behalf of the GECKO Team\n\n We report optical follow-up observations associated with the LIGO/Virgo/KAGRA gravitational-wave event, S230627c (GCN 34086), conducted with the LOAO, KHAO, CBNUO, and SAO telescopes. The LOAO is a 1.0-meter telescope located in the USA. The KHAO and SAO are 1.0-meter and 0.8-meter telescopes, respectively, located in Korea. The CBNUO is a 0.6-meter telescope with a wide field of view, also located in Korea. Detailed information is in Im+21. The LOAO and KHAO observed the seven highest-scoring host galaxy candidates. The SAO observed one of the optical counterpart candidates, ZTF23aaptsuy/AT2023lxu, reported by ZTF (GCN 34089), and the CBNUO observed the highest-ranked tile with a wide field-of-view (~1.4 deg2).\n\n The host galaxy candidates from the GLADE+ catalog (Dálya+21) were ranked based on a calculated score that combines the probability in the GW localization area with the K-band luminosity, the latter of which is used as a proxy for stellar mass. Each tile for wide field-of-view instruments is ranked by summing the scores of galaxies within the tile.\n\n Observations began at 2023-06-27 04:25 (UT), approximately 0.11 days after the GW alert. For the LOAO images, we subtracted each observed image from the reference image in the r-band from the Pan-STARRS1 surveys (Chambers+16) and filtered transient candidates, which we classified either through parameters from SourceEXtractor (Bertin+96) or visual inspection. Despite our efforts, we could not find any significant signals.\n\n We used the Pan-STARRS1 catalog for flux calibration and employed an AB magnitude system. The preliminary 5 sigma depths of LOAO and KHAO images are as follows:\n------\nOBS OBJECT RANK RA DEC DATE-OBS[UTC] t-t0[days] FILTER EXPTIME[s] DEPTH\nLOAO G135600 0 10:44:53.7 +51:59:22.2 2023-06-27T04:25:33 0.11 R 4860 20.9 \nLOAO G1053369 1 10:48:32.0 +54:05:12.0 2023-06-28T04:12:01 1.10 R 1800 20.8 \nLOAO G1047395 2 10:41:23.0 +46:56:05.0 2023-06-28T04:47:23 1.12 R 1800 20.5 \nLOAO G1079423 3 10:49:12.0 +57:50:13.2 2023-06-29T04:00:59 2.09 R 1800 20.8 \nLOAO G1078790 4 10:51:27.1 +57:42:36.0 2023-06-29T04:46:02 2.12 R 1800 20.7 \nLOAO G1047181 5 10:36:31.9 +45:16:44.4 2023-06-30T03:57:02 3.09 R 1800 20.7\nLOAO G1079513 6 10:51:47.2 +55:23:09.6 2023-06-30T04:34:44 3.11 R 1800 20.7\nKHAO G135600 0 10:44:53.1 +51:59:09.8 2023-06-27T12:10:16 0.43 R 900 16.7\n\n The preliminary 5-sigma depth of the CBNUO image is as follows:\n------\nOBS OBJECT RANK RA DEC DATE-OBS[UTC] t-t0[days] FILTER EXPTIME[s] DEPTH\nCBNUO S230627C 0 11:10:14.110 +75:41:28.640 2023-06-27T12:21:49 0.44 R 300 17.1\n\n The preliminary 5 sigma depths of SAO images are as follows:\n------\nOBS OBJECT DATE-OBS[UTC] t-t0[days] FILTER EXPTIME[s] DEPTH\nSAO AT2023lxu 2023-06-27T12:32:39 0.44 R 120 16.6\nSAO AT2023lxu 2023-07-01T11:45:01 4.41 R 2520 19.7\n\n Gravitational-wave EM Counterpart Korean Observatory (GECKO) is a network of 10+ 0.5m to 1m class telescopes worldwide. The Korea Astronomy and Space Science Institute operates LOAO. We thank the LOAO, KHAO, CBNUO, and SAO operators for their support for the observations.\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg4NjAxNjk0LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.kt-MVP_ziUTtc0K84PUs1btNNXJOMEpu8tFap2sbSFo\n\n",
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{
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"topic": "gcn.circular",
"uuid": "becf9c64-3cb3-4c02-ac5a-f9d48f681a64",
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"authors": "Nicolas Sanchis-Gual at University of Valencia <nicolas.sanchis-gual@ligo.org>",
"data": {
"date": "23/07/06 11:15:16 GMT",
"from": "Nicolas Sanchis-Gual at University of Valencia <nicolas.sanchis-gual@ligo.org>",
"title": "GCN CIRCULAR",
"number": "34147",
"subject": "LIGO/Virgo/KAGRA S230706ah: 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 S230706ah during\nreal-time processing of data from LIGO Hanford Observatory (H1) and\nLIGO Livingston Observatory (L1) at 2023-07-06 10:43:33.157 UTC (GPS\ntime: 1372675431.157). The candidate was found by the MBTA [1], GstLAL\n[2], PyCBC Live [3], and SPIIR [4] analysis pipelines.\n\nS230706ah is an event of interest because its false alarm rate, as\nestimated by the online analysis, is 4.3e-08 Hz, or about one in 8\nmonths. The event's properties can be found at this URL:\n\nhttps://gracedb.ligo.org/superevents/S230706ah\n\nThe classification of the GW signal, in order of descending\nprobability, is BBH (97%), Terrestrial (3%), NSBH (<1%), 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 <1%. [5] Using the masses and spins inferred from the\nsignal, the probability of matter outside the final compact object\n(HasRemnant) is <1%. [5] Both HasNS and HasRemnant consider the\nsupport of several neutron star equations of state. The probability\nthat either of the binary components lies between 3 and 5 solar masses\n(HasMassgap) is 4%.\n\nTwo sky maps are available at this time and can be retrieved from the\nGraceDB event page:\n * bayestar.multiorder.fits,1, an initial localization generated by\nBAYESTAR [6], distributed via GCN notice about 24 seconds after the\ncandidate event time.\n * bayestar.multiorder.fits,2, an initial localization generated by\nBAYESTAR [6], distributed via GCN notice about 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\n1553 deg2. Marginalized over the whole sky, the a posteriori\nluminosity distance estimate is 2143 +/- 684 Mpc (a posteriori mean\n+/- standard deviation).\n\nFor further information about analysis methodology and the contents of\nthis alert, refer to the LIGO/Virgo/KAGRA Public Alerts User Guide\nhttps://emfollow.docs.ligo.org/userguide/.\n\n [1] Aubin et al. CQG 38, 095004 (2021)\n [2] Tsukada et al. arXiv:2305.06286 (2023) and Ewing et al.\narXiv:2305.05625 (2023)\n [3] Dal Canton et al. ApJ 923, 254 (2021)\n [4] Chu et al. PRD 105, 024023 (2022)\n [5] Chatterjee et al. ApJ 896, 54 (2020)\n [6] Singer & Price PRD 93, 024013 (2016)\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg4NjQyMTIyLCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.SITu2vnfoutyAbjV13SWC2aEyBxluyO73KtcTQQJlMI\n\n",
"published": "2023-07-06T11:15:27.345094Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-07-06T11:15:27.345126Z",
"modified": "2023-07-06T11:15:27.351588Z",
"nonlocalizedevents": [
{
"event_id": "S230706a"
}
],
"targets": []
},
{
"id": 937,
"topic": "igwn.gwalert",
"uuid": "b62e1382-eb7a-4621-9da3-14845a30cb58",
"title": "S230706al - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230706al/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230706al/view/"
},
"event": {
"far": 1.9384231109143e-06,
"time": "2023-07-06T11:38:51.766Z",
"group": "CBC",
"search": "AllSky",
"area_50": 357.8013721240856,
"area_90": 1407.495443019127,
"duration": null,
"pipeline": "spiir",
"properties": {
"HasNS": 1.0,
"HasMassGap": 0.6313811610877974,
"HasRemnant": 0.006977644260972064
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "9a9628806231aaa81c88471fa89c2e96",
"classification": {
"BBH": 0.0,
"BNS": 0.06696994819888105,
"NSBH": 0.19952988634388244,
"Terrestrial": 0.7335001654572365
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-07-06T11:39:26Z",
"superevent_id": "S230706al",
"external_coinc": null
},
"message_text": "",
"published": "2023-07-06T11:39:27.684087Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-07-06T11:39:27.684110Z",
"modified": "2023-07-06T11:39:27.690080Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 938,
"topic": "igwn.gwalert",
"uuid": "1b6b6616-ccb1-41bb-b34a-ed9ac27d30c4",
"title": "S230706al - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230706al/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230706al/view/"
},
"event": {
"far": 1.9384231109143e-06,
"time": "2023-07-06T11:38:51.766Z",
"group": "CBC",
"search": "AllSky",
"area_50": 357.8013721240856,
"area_90": 1407.495443019127,
"duration": null,
"pipeline": "spiir",
"properties": {
"HasNS": 1.0,
"HasMassGap": 0.6313811610877974,
"HasRemnant": 0.006977644260972064
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "9a9628806231aaa81c88471fa89c2e96",
"classification": {
"BBH": 0.0,
"BNS": 0.06696994819888105,
"NSBH": 0.19952988634388244,
"Terrestrial": 0.7335001654572365
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-07-06T11:44:01Z",
"superevent_id": "S230706al",
"external_coinc": null
},
"message_text": "",
"published": "2023-07-06T11:44:02.449608Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-07-06T11:44:02.449632Z",
"modified": "2023-07-06T11:44:02.455304Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 939,
"topic": "igwn.gwalert",
"uuid": "ee9b127e-4692-455b-b846-e0b12b03f899",
"title": "S230706an - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230706an/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230706an/view/"
},
"event": {
"far": 1.988680306135957e-05,
"time": "2023-07-06T12:06:49.606Z",
"group": "CBC",
"search": "AllSky",
"area_50": 629.4702339083752,
"area_90": 2498.577181793644,
"duration": null,
"pipeline": "pycbc",
"properties": {
"HasNS": 1.0,
"HasMassGap": 0.06926197658550601,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "d0bb12b186282fc43e72483c57c5f5d2",
"classification": {
"BBH": 1.9135991380152537e-05,
"BNS": 7.914714835972812e-07,
"NSBH": 0.001167168545569023,
"Terrestrial": 0.9988129039915672
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-07-06T12:07:19Z",
"superevent_id": "S230706an",
"external_coinc": null
},
"message_text": "",
"published": "2023-07-06T12:07:20.375333Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-07-06T12:07:20.375391Z",
"modified": "2023-07-06T12:07:20.381593Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 940,
"topic": "igwn.gwalert",
"uuid": "4aceef83-e7e7-4f42-9a13-97156a1e96a9",
"title": "S230706an - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230706an/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230706an/view/"
},
"event": {
"far": 1.988680306135957e-05,
"time": "2023-07-06T12:06:49.606Z",
"group": "CBC",
"search": "AllSky",
"area_50": 629.4702339083752,
"area_90": 2498.577181793644,
"duration": null,
"pipeline": "pycbc",
"properties": {
"HasNS": 1.0,
"HasMassGap": 0.06926197658550601,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "d0bb12b186282fc43e72483c57c5f5d2",
"classification": {
"BBH": 1.9135991380152537e-05,
"BNS": 7.914714835972812e-07,
"NSBH": 0.001167168545569023,
"Terrestrial": 0.9988129039915672
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-07-06T12:11:53Z",
"superevent_id": "S230706an",
"external_coinc": null
},
"message_text": "",
"published": "2023-07-06T12:11:54.225662Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-07-06T12:11:54.225704Z",
"modified": "2023-07-06T12:11:54.231827Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 941,
"topic": "igwn.gwalert",
"uuid": "0649e6c4-06ff-4aee-bcff-64bb0cb4db75",
"title": "S230529ay - UPDATE",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230529ay/files/bayestar.multiorder.fits,1",
"gracedb": "https://gracedb.ligo.org/superevents/S230529ay/view/"
},
"event": {
"far": 1.975121185032117e-10,
"time": "2023-05-29T18:15:00.746Z",
"group": "CBC",
"search": "AllSky",
"area_50": 8430.704666146172,
"area_90": 24534.231836812833,
"duration": null,
"pipeline": "pycbc",
"properties": {
"HasNS": 0.980829231308616,
"HasMassGap": 0.7258304847050574,
"HasRemnant": 0.07214606012796915
},
"instruments": [
"L1"
],
"significant": true,
"skymap_hash": "f4e156cef2c35b2b3bd93c7b8615b6e9",
"classification": {
"BBH": 0.0,
"BNS": 0.30601513334446906,
"NSBH": 0.6240278234757632,
"Terrestrial": 0.0699570431797677
},
"skymap_version": 1,
"central_frequency": null
},
"alert_type": "UPDATE",
"sequence_num": 4,
"time_created": "2023-07-06T14:09:33Z",
"superevent_id": "S230529ay",
"external_coinc": null
},
"message_text": "",
"published": "2023-07-06T14:09:34.676081Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-07-06T14:09:34.676127Z",
"modified": "2023-07-06T14:09:34.696014Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 942,
"topic": "gcn.circular",
"uuid": "6017f0bf-b5d4-4544-b811-2aed085c9263",
"title": "LIGO/Virgo/KAGRA S230529ay: Updated Sky localization and EM Bright Classification",
"submitter": "Hop gcn.circular",
"authors": "Sylvia Biscoveanu at MIT <sylvia.biscoveanu@ligo.org>",
"data": {
"date": "23/07/06 14:20:32 GMT",
"from": "Sylvia Biscoveanu at MIT <sylvia.biscoveanu@ligo.org>",
"title": "GCN CIRCULAR",
"number": "34148",
"subject": "LIGO/Virgo/KAGRA S230529ay: Updated Sky localization and EM Bright Classification"
},
"message_text": "The LIGO Scientific Collaboration, the Virgo Collaboration, and the KAGRA Collaboration report:\n\nWe have conducted further offline analysis of the LIGO Livingston Observatory (L1) data around the time of the compact binary merger (CBC) candidate S230529ay (GCN Circular 33889). Parameter estimation has been performed using Bilby [1] and a new sky map, Bilby.offline0.multiorder.fits,0, distributed via GCN Notice, is available for retrieval from the GraceDB event page: https://gracedb.ligo.org/superevents/S230529ay\n\nBased on posterior support from parameter estimation [1], under the assumption that the candidate S230529ay is astrophysical in origin,the probability that the lighter compact object is consistent with a neutron star mass (HasNS) is 98%. [2] Using the masses and spins inferred from the signal, the probability of matter outside the final compact object (HasRemnant) is 7%. [2] Both HasNS and HasRemnant consider the support of several neutron star equations of state. The probability that any one of the binary components lie between 3 to 5 solar mass (HasMassgap) is 73%.\n\nThe upward revision in the HasRemnant value relative to that quoted in circular number 33891 is primarily due to an issue that was identified in the em-bright code rather than the updated choice of offline analysis settings. This issue has been fixed and does not affect any values from posterior samples reported in circulars for this event or other events in O4.\n\nFor the Bilby.offline0.multiorder.fits,0 sky map, the 90% credible region is 24534 deg2. Marginalized over the whole sky, the a posteriori luminosity distance estimate is 197 +/- 62 Mpc (a posteriori mean +/- standard deviation).\n\nFor further information about analysis methodology and the contents of this alert, refer to the LIGO/Virgo/KAGRA Public Alerts User Guide <https://emfollow.docs.ligo.org/userguide/>.\n\n\n[1] Ashton et al. ApJS 241, 27 (2019)\n[2] Chatterjee et al. The Astrophysical Journal 896, 1 (2020)\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg4NjUzMjM3LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.jdQtpjkXCKeOLcqZ12dvEqmR6YBuPqRZN36MGTCHtyA\n\n",
"published": "2023-07-06T14:20:42.977908Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-07-06T14:20:42.977926Z",
"modified": "2023-07-06T14:20:42.985424Z",
"nonlocalizedevents": [
{
"event_id": "S230529a"
}
],
"targets": []
},
{
"id": 943,
"topic": "gcn.circular",
"uuid": "23c07a81-0c90-4239-8e21-7c879f15655e",
"title": "GRB 230625A: Detection by GRID",
"submitter": "Hop gcn.circular",
"authors": "GRID Student Team at Tsinghua University <grid@tsinghua.edu.cn>",
"data": {
"date": "23/07/06 14:32:09 GMT",
"from": "GRID Student Team at Tsinghua University <grid@tsinghua.edu.cn>",
"title": "GCN CIRCULAR",
"number": "34149",
"subject": "GRB 230625A: Detection by GRID"
},
"message_text": "Chenyu Wang and Zirui Yang report on behalf of the GRID Collaboration:\n\nThe long-duration GRB 230625A (Fermi GBM detection: GCN Circular 34080) was observed with GRID-03B.\n\nThe detection was confirmed at the trigger time 2023-06-25T18:23:56.7 UTC. The T90 duration measured with GRID is 59.0 s.\n\nA brief introduction to GRID can be found at https://doi.org/10.1007/s10686-019-09636-w and https://doi.org/10.1007/s10686-021-09819-4.\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg4NjUzOTM0LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.Nym370oEd13VN1PfHx1oJYZJVIyGAgc3UnbeVQ2AiNs\n\n",
"published": "2023-07-06T14:32:20.372921Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-07-06T14:32:20.372940Z",
"modified": "2023-07-06T14:32:20.378474Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 944,
"topic": "igwn.gwalert",
"uuid": "532c6386-cb37-42d8-bf60-2dbdc6c693d4",
"title": "S230702an - UPDATE",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230702an/files/bayestar.multiorder.fits,2",
"gracedb": "https://gracedb.ligo.org/superevents/S230702an/view/"
},
"event": {
"far": 1.533216963076217e-12,
"time": "2023-07-02T18:54:53.738Z",
"group": "CBC",
"search": "AllSky",
"area_50": 581.6304961313388,
"area_90": 2266.9321357153617,
"duration": null,
"pipeline": "gstlal",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.0,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": true,
"skymap_hash": "30a7ff05da7177bf0572994f7a3ee7ab",
"classification": {
"BBH": 0.9999972350416713,
"BNS": 5.721838593993748e-23,
"NSBH": 9.76040385444119e-12,
"Terrestrial": 2.764948568323433e-06
},
"skymap_version": 2,
"central_frequency": null
},
"alert_type": "UPDATE",
"sequence_num": 4,
"time_created": "2023-07-06T17:07:27Z",
"superevent_id": "S230702an",
"external_coinc": null
},
"message_text": "",
"published": "2023-07-06T17:07:28.794217Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-07-06T17:07:28.794247Z",
"modified": "2023-07-06T17:07:28.804092Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 945,
"topic": "gcn.circular",
"uuid": "16afb4e4-fb96-4af3-871a-1aef44da5d21",
"title": "LIGO/Virgo/KAGRA S230702an: Updated Sky localization",
"submitter": "Hop gcn.circular",
"authors": "jgolomb@caltech.edu",
"data": {
"date": "23/07/06 17:11:18 GMT",
"from": "jgolomb@caltech.edu",
"title": "GCN CIRCULAR",
"number": "34150",
"subject": "LIGO/Virgo/KAGRA S230702an: Updated Sky localization"
},
"message_text": "We 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 S230702an (GCN Circular 34136). 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/S230702an\n\nFor the Bilby.multiorder.fits,0 sky map, the 90% credible region is 2267 deg2. Marginalized over the whole sky, the a posteriori luminosity distance estimate is 2428 +/- 849 Mpc (a posteriori mean +/- standard deviation).\n\nFor further information about analysis methodology and the contents of this alert, refer to the LIGO/Virgo/KAGRA Public Alerts User Guide https://emfollow.docs.ligo.org/userguide/.\n\n\n [1] Ashton et al. ApJS 241, 27 (2019)\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg4NjYzNDgzLCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.NuSw41ukERfA7GQH24m80LxIEDyX93swKG2cPEWpK4U\n\n",
"published": "2023-07-06T17:11:32.160557Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-07-06T17:11:32.160590Z",
"modified": "2023-07-06T17:11:32.167586Z",
"nonlocalizedevents": [
{
"event_id": "S230702a"
}
],
"targets": []
},
{
"id": 946,
"topic": "gcn.circular",
"uuid": "d69e29ff-6fc6-4370-800e-4a0922b205ff",
"title": "IBAS trigger number 10311: not a real GRB",
"submitter": "Hop gcn.circular",
"authors": "Diego Gotz at CEA <diego.gotz@cea.fr>",
"data": {
"date": "23/07/06 17:12:08 GMT",
"from": "Diego Gotz at CEA <diego.gotz@cea.fr>",
"title": "GCN CIRCULAR",
"number": "34151",
"subject": "IBAS trigger number 10311: not a real GRB"
},
"message_text": "D. Götz (CEA Saclay) and C. Ferrigno (ISDC) on behalf of the IBAS team report:\n\nThe IBAS trigger number 10311 of 2023-07-06 at 16:52:38 UTC is not a real GRB, but is related to the active state of Swift J0243.6+6124.\n\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg4NjYzNTMxLCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.Q4xe_UXhncSlLJ8F8JZKwVI4IxICAgld0gkaRV3IrSc\n\n",
"published": "2023-07-06T17:12:15.388267Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-07-06T17:12:15.388286Z",
"modified": "2023-07-06T17:12:15.393658Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 947,
"topic": "igwn.gwalert",
"uuid": "a9c1074a-00ae-4ed9-8786-a1c0d75bfe8e",
"title": "S230630bq - UPDATE",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230630bq/files/bayestar.multiorder.fits,2",
"gracedb": "https://gracedb.ligo.org/superevents/S230630bq/view/"
},
"event": {
"far": 7.732377e-09,
"time": "2023-06-30T23:45:32.407Z",
"group": "CBC",
"search": "AllSky",
"area_50": 245.07374440166075,
"area_90": 1214.2480812092558,
"duration": null,
"pipeline": "MBTA",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.02976190476190476,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": true,
"skymap_hash": "8ec9c51d178ad8428023bbb09bf4370e",
"classification": {
"BBH": 0.968061153,
"BNS": 0.0,
"NSBH": 0.000828221,
"Terrestrial": 0.031110641
},
"skymap_version": 2,
"central_frequency": null
},
"alert_type": "UPDATE",
"sequence_num": 4,
"time_created": "2023-07-06T18:49:16Z",
"superevent_id": "S230630bq",
"external_coinc": null
},
"message_text": "",
"published": "2023-07-06T18:49:17.333748Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-07-06T18:49:17.333794Z",
"modified": "2023-07-06T18:49:17.342023Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 948,
"topic": "gcn.circular",
"uuid": "b36c350d-b815-4dc2-bbd2-68b064aa7b9d",
"title": "LIGO/Virgo/KAGRA S230630bq: Updated Sky localization",
"submitter": "Hop gcn.circular",
"authors": "jgolomb@caltech.edu",
"data": {
"date": "23/07/06 18:52:12 GMT",
"from": "jgolomb@caltech.edu",
"title": "GCN CIRCULAR",
"number": "34152",
"subject": "LIGO/Virgo/KAGRA S230630bq: Updated Sky localization"
},
"message_text": "We 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 S230630bq (GCN Circular 34127). Parameter estimation has been performed using Bilby [1] and a new sky map, Bilby.offline0.multiorder.fits,0, distributed via GCN Notice, is available for retrieval from the GraceDB event page:\n\nhttps://gracedb.ligo.org/superevents/S230630bq\n\nFor the Bilby.offline0.multiorder.fits,0 sky map, the 90% credible region is 1215 deg2. Marginalized over the whole sky, the a posteriori luminosity distance estimate is 999 +/- 286 Mpc (a posteriori mean +/- standard deviation).\n\nFor further information about analysis methodology and the contents of this alert, refer to the LIGO/Virgo/KAGRA Public Alerts User Guide https://emfollow.docs.ligo.org/userguide/.\n\n\n [1] Ashton et al. ApJS 241, 27 (2019)\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg4NjY5NTM3LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.Ng2uYUCr4D4RJxcloAODDlmCgoQG1nNfclRS9zfi_Gk\n\n",
"published": "2023-07-06T18:52:22.778106Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-07-06T18:52:22.778135Z",
"modified": "2023-07-06T18:52:22.784792Z",
"nonlocalizedevents": [
{
"event_id": "S230630b"
}
],
"targets": []
},
{
"id": 949,
"topic": "igwn.gwalert",
"uuid": "a8ee6850-96a2-49fc-aca5-36bd344c506a",
"title": "S230704f - UPDATE",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230704f/files/bayestar.multiorder.fits,1",
"gracedb": "https://gracedb.ligo.org/superevents/S230704f/view/"
},
"event": {
"far": 2.815522679531743e-09,
"time": "2023-07-04T02:12:11.224Z",
"group": "CBC",
"search": "AllSky",
"area_50": 434.96393163068734,
"area_90": 1699.5696315526131,
"duration": null,
"pipeline": "gstlal",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.0,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": true,
"skymap_hash": "dc543539bf4db3f354998ffee0de8b4f",
"classification": {
"BBH": 0.9974491771640841,
"BNS": 1.1904241311736438e-20,
"NSBH": 8.37264971934899e-19,
"Terrestrial": 0.0025508228359159
},
"skymap_version": 1,
"central_frequency": null
},
"alert_type": "UPDATE",
"sequence_num": 4,
"time_created": "2023-07-06T19:00:49Z",
"superevent_id": "S230704f",
"external_coinc": null
},
"message_text": "",
"published": "2023-07-06T19:00:49.606029Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-07-06T19:00:49.606053Z",
"modified": "2023-07-06T19:00:49.611762Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 950,
"topic": "gcn.circular",
"uuid": "62516189-04b1-4509-abac-6c892803cf8c",
"title": "LIGO/Virgo/KAGRA S230704f: Updated Sky localization",
"submitter": "Hop gcn.circular",
"authors": "jgolomb@caltech.edu",
"data": {
"date": "23/07/06 19:03:13 GMT",
"from": "jgolomb@caltech.edu",
"title": "GCN CIRCULAR",
"number": "34153",
"subject": "LIGO/Virgo/KAGRA S230704f: Updated Sky localization"
},
"message_text": "The LIGO Scientific Collaboration, the Virgo Collaboration, and the KAGRA Collaboration report:\n\nWe have conducted further analysis of the LIGO Hanford Observatory (H1) and LIGO Livingston Observatory (L1) data around the time of the compact binary merger (CBC) candidate S230704f (GCN Circular 34140). 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/S230704f\n\nFor the Bilby.multiorder.fits,0 sky map, the 90% credible region is 1700 deg2. Marginalized over the whole sky, the a posteriori luminosity distance estimate is 2759 +/- 992 Mpc (a posteriori mean +/- standard deviation).\n\nFor further information about analysis methodology and the contents of this alert, refer to the LIGO/Virgo/KAGRA Public Alerts User Guide https://emfollow.docs.ligo.org/userguide/.\n\n\n [1] Ashton et al. ApJS 241, 27 (2019)\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg4NjcwMTk5LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.33wOe7aHN5fZRiwIe4yDycEWBpVZzFQF5MJIQAksuks\n\n",
"published": "2023-07-06T19:03:24.987019Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-07-06T19:03:24.987052Z",
"modified": "2023-07-06T19:03:24.992891Z",
"nonlocalizedevents": [
{
"event_id": "S230704f"
}
],
"targets": []
},
{
"id": 951,
"topic": "gcn.circular",
"uuid": "72a295b0-a74d-4ad5-b938-b3b868763f48",
"title": "Integral GRB230706.70: Global MASTER-Net observations report",
"submitter": "Hop gcn.circular",
"authors": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"data": {
"date": "23/07/06 20:57:32 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "34154",
"subject": "Integral GRB230706.70: 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 Integral GRB230706.70 (trigger No 10311,02h 43m 43.74s , +61d 25m 28.0s, R=0.0521667) errorbox 13108 sec after notice time and 13120 sec after trigger time at 2023-07-06 20:31:19 UT, with upper limit up to 17.9 mag. The observations began at zenith distance = 68 deg. The sun altitude is -21.1 deg.\n\nThe galactic latitude b = 2 deg., longitude l = 136 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/observ.php?id\"34345\n\nWe obtain a following upper limits.\n\nTmid-T0 | Site |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____|_______|______|________\n\n 13211 | MASTER-Tavrida | C | 180 | 17.8 |\n 13399 | MASTER-Tavrida | C | 180 | 17.9 |\n 13588 | MASTER-Tavrida | C | 180 | 17.7 |\n 13776 | MASTER-Tavrida | C | 180 | 17.5 |\n 13964 | MASTER-Tavrida | C | 180 | 17.5 |\n 14153 | MASTER-Tavrida | C | 180 | 17.4 |\n 14341 | MASTER-Tavrida | C | 180 | 17.4 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg4Njc3MDU4LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.E5vkYIijZjKdKUKcqJQubA7cv_ath_S5a2ISaeIUfnk\n\n",
"published": "2023-07-06T20:57:43.777428Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-07-06T20:57:43.777448Z",
"modified": "2023-07-06T20:57:43.783331Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 952,
"topic": "igwn.gwalert",
"uuid": "70e18aee-8946-4487-946d-ddec757e7a8b",
"title": "S230706bv - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230706bv/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230706bv/view/"
},
"event": {
"far": 2.12898103200132e-05,
"time": "2023-07-06T21:40:27.541Z",
"group": "CBC",
"search": "AllSky",
"area_50": 2339.1113892035223,
"area_90": 9994.308727174575,
"duration": null,
"pipeline": "spiir",
"properties": {
"HasNS": 1.0,
"HasMassGap": 0.5277428361332114,
"HasRemnant": 0.6973789141371401
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "8a593bdb8851ead58aabce5b88def34f",
"classification": {
"BBH": 0.0,
"BNS": 0.10173458566318336,
"NSBH": 0.042773331164923725,
"Terrestrial": 0.8554920831718928
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-07-06T21:40:51Z",
"superevent_id": "S230706bv",
"external_coinc": null
},
"message_text": "",
"published": "2023-07-06T21:40:52.510029Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-07-06T21:40:52.510051Z",
"modified": "2023-07-06T21:40:52.515776Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 953,
"topic": "igwn.gwalert",
"uuid": "ff796409-d3dc-41bc-9141-4bcbfe2903c3",
"title": "S230706bv - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230706bv/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230706bv/view/"
},
"event": {
"far": 2.12898103200132e-05,
"time": "2023-07-06T21:40:27.541Z",
"group": "CBC",
"search": "AllSky",
"area_50": 2339.1113892035223,
"area_90": 9994.308727174575,
"duration": null,
"pipeline": "spiir",
"properties": {
"HasNS": 1.0,
"HasMassGap": 0.5277428361332114,
"HasRemnant": 0.6973789141371401
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "8a593bdb8851ead58aabce5b88def34f",
"classification": {
"BBH": 0.0,
"BNS": 0.10173458566318336,
"NSBH": 0.042773331164923725,
"Terrestrial": 0.8554920831718928
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-07-06T21:45:25Z",
"superevent_id": "S230706bv",
"external_coinc": null
},
"message_text": "",
"published": "2023-07-06T21:45:27.217315Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-07-06T21:45:27.217340Z",
"modified": "2023-07-06T21:45:27.222872Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 954,
"topic": "igwn.gwalert",
"uuid": "4e0fa674-083f-446f-935b-cbe41fdf69f9",
"title": "S230706ah - UPDATE",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230706ah/files/bayestar.multiorder.fits,1",
"gracedb": "https://gracedb.ligo.org/superevents/S230706ah/view/"
},
"event": {
"far": 4.261355826314869e-08,
"time": "2023-07-06T10:43:33.157Z",
"group": "CBC",
"search": "AllSky",
"area_50": 375.95109720177703,
"area_90": 1496.880216234116,
"duration": null,
"pipeline": "gstlal",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.0,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": true,
"skymap_hash": "3de8e061c2003099eeeede489387ac0d",
"classification": {
"BBH": 0.9733323180266275,
"BNS": 4.420867447273138e-18,
"NSBH": 2.7828529137534185e-16,
"Terrestrial": 0.026667681973372215
},
"skymap_version": 1,
"central_frequency": null
},
"alert_type": "UPDATE",
"sequence_num": 4,
"time_created": "2023-07-07T00:12:10Z",
"superevent_id": "S230706ah",
"external_coinc": null
},
"message_text": "",
"published": "2023-07-07T00:12:11.431999Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-07-07T00:12:11.432054Z",
"modified": "2023-07-07T00:12:11.439907Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 955,
"topic": "gcn.circular",
"uuid": "d6fb1bef-6682-4ed9-a5a9-9fa5dd445ab1",
"title": "LIGO/Virgo/KAGRA S230706ah: Updated Sky localization",
"submitter": "Hop gcn.circular",
"authors": "jgolomb@caltech.edu",
"data": {
"date": "23/07/07 00:13:41 GMT",
"from": "jgolomb@caltech.edu",
"title": "GCN CIRCULAR",
"number": "34155",
"subject": "LIGO/Virgo/KAGRA S230706ah: Updated Sky localization"
},
"message_text": "The LIGO Scientific Collaboration, the Virgo Collaboration, and the KAGRA Collaboration report:\n\nWe have conducted further analysis of the LIGO Hanford Observatory (H1) and LIGO Livingston Observatory (L1) data around the time of the compact binary merger (CBC) candidate S230706ah (GCN Circular ***CITE ORIGINAL GCN ID, e.g. 25012***). Parameter estimation has been performed using Bilby [1] and a new sky map, Bilby.multiorder.fits,0,\ndistributed via GCN Notice, is available for retrieval from the\nGraceDB event page:\n\nhttps://gracedb.ligo.org/superevents/S230706ah\n\nFor the Bilby.multiorder.fits,0 sky map, the 90% credible region is\n1497 deg2. Marginalized over the whole sky, the a posteriori\nluminosity distance estimate is 1962 +/- 594 Mpc (a posteriori mean\n+/- standard deviation).\n\nFor further information about analysis methodology and the contents of\nthis alert, refer to the LIGO/Virgo/KAGRA Public Alerts User Guide\nhttps://emfollow.docs.ligo.org/userguide/.\n\n\n [1] Ashton et al. ApJS 241, 27 (2019)\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg4Njg4ODI2LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.23wqYpDDopntbXAskeO7OZn9YHK_1D8krx-Sd_utSp4\n\n",
"published": "2023-07-07T00:13:51.766307Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-07-07T00:13:51.766341Z",
"modified": "2023-07-07T00:13:51.772192Z",
"nonlocalizedevents": [
{
"event_id": "S230706a"
}
],
"targets": []
},
{
"id": 956,
"topic": "gcn.circular",
"uuid": "6912ccd8-1545-48a7-b396-fa42198c50b8",
"title": "GRB 230707A: 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": "23/07/07 03:34:19 GMT",
"from": "Fermi GBM Team at MSFC/Fermi-GBM <do_not_reply@GIOC.nsstc.nasa.gov>",
"title": "GCN CIRCULAR",
"number": "34156",
"subject": "GRB 230707A: Fermi GBM Final Real-time Localization"
},
"message_text": "The Fermi GBM team reports the detection of a likely LONG GRB\n\nAt 03:22:51 UT on 7 Jul 2023, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 230707A (trigger 710392976.959644 / 230707141).\n\nThe on-ground calculated location, using the Fermi GBM trigger data, is RA = 173.9, Dec = -17.1 (J2000 degrees, equivalent to J2000 11h 35m, -17d 06'), with a statistical uncertainty of 2.5 degrees.\n\nThe angle from the Fermi LAT boresight is 67.0 degrees.\n\nThe skymap can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn230707141/quicklook/glg_skymap_all_bn230707141.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/bn230707141/quicklook/glg_healpix_all_bn230707141.fit\n\nThe GBM light curve can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn230707141/quicklook/glg_lc_medres34_bn230707141.gif\n\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg4NzAwODY0LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.BuupNxcIgWVFAOYts9z7Ik-5cY-uq1V1fJPfeJbFkU0\n\n",
"published": "2023-07-07T03:34:29.735295Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-07-07T03:34:29.735315Z",
"modified": "2023-07-07T03:34:29.743205Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 957,
"topic": "gcn.circular",
"uuid": "d73c6a47-a3c3-4a1d-919f-429fcab4ef72",
"title": "Fermi GRB 230707A: Global MASTER-Net observations report",
"submitter": "Hop gcn.circular",
"authors": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"data": {
"date": "23/07/07 04:15:50 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "34157",
"subject": "Fermi GRB 230707A: 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-OAGH robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Mexico (OAGH National Institute for Astrophysics, Optics and Electronics) started inspect of the Fermi GRB 230707A ( Fermi GBM team, GCN 34156) errorbox 174 sec after notice time and 210 sec after trigger time at 2023-07-07 03:26:21 UT, with upper limit up to 18.0 mag. Observations started at twilight. The observations began at zenith distance = 71 deg. The sun altitude is -11.9 deg.\n\nMASTER-OAFA robotic telescope located in Argentina (OAFA observatory of San Juan National University) started inspect of the Fermi GRB 230707A errorbox 804 sec after notice time and 840 sec after trigger time at 2023-07-07 03:36:52 UT, with upper limit up to 12.3 mag. The observations began at zenith distance = 87 deg. The sun altitude is -73.8 deg.\n\nThe galactic latitude b = 42 deg., longitude l = 279 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/observ.php?id\"34493\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 230 | 2023-07-07 03:26:21 | MASTER-OAGH | (11h 31m 43.96s , -18d 19m 29.8s) | C | 40 | 16.8 |\n 451 | 2023-07-07 03:29:42 | MASTER-OAGH | (11h 31m 38.19s , -18d 20m 47.6s) | C | 80 | 17.2 |\n 916 | 2023-07-07 03:36:42 | MASTER-OAGH | (11h 35m 36.07s , -17d 26m 31.7s) | C | 170 | 17.8 |\n 906 | 2023-07-07 03:36:52 | MASTER-OAFA | (11h 33m 57.32s , -16d 58m 43.3s) | C | 130 | 12.3 |\n 1251 | 2023-07-07 03:42:12 | MASTER-OAGH | (11h 35m 36.41s , -17d 28m 18.2s) | C | 180 | 18.0 |\n 1592 | 2023-07-07 03:47:53 | MASTER-OAGH | (11h 31m 07.26s , -16d 16m 23.9s) | C | 180 | 17.7 |\n 1934 | 2023-07-07 03:53:35 | MASTER-OAGH | (11h 39m 30.22s , -16d 16m 43.2s) | C | 180 | 18.0 |\n 2274 | 2023-07-07 03:59:15 | MASTER-OAGH | (11h 31m 16.26s , -16d 16m 40.2s) | C | 180 | 17.7 |\n 2620 | 2023-07-07 04:05:01 | MASTER-OAGH | (11h 39m 28.83s , -16d 16m 03.1s) | C | 180 | 18.0 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg4NzAzMzU2LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.AuDr2NVpCgdVAO_mbi2c-HPECSYZX8ogJPsCbOB0VVE\n\n",
"published": "2023-07-07T04:16:02.250817Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-07-07T04:16:02.250851Z",
"modified": "2023-07-07T04:16:02.258783Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 958,
"topic": "igwn.gwalert",
"uuid": "173b945f-4f1d-45e9-b2eb-84622e2b4a5d",
"title": "S230707o - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230707o/files/cwb.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230707o/view/"
},
"event": {
"far": 1.92919e-05,
"time": "2023-07-07T06:49:08.586Z",
"group": "Burst",
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"area_50": 2350.0222065912676,
"area_90": 7425.230879183194,
"duration": 0.051099,
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"classification": {},
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"sequence_num": 1,
"time_created": "2023-07-07T06:50:17Z",
"superevent_id": "S230707o",
"external_coinc": null
},
"message_text": "",
"published": "2023-07-07T06:50:18.378289Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-07-07T06:50:18.378328Z",
"modified": "2023-07-07T06:50:18.393903Z",
"nonlocalizedevents": [],
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},
{
"id": 959,
"topic": "igwn.gwalert",
"uuid": "027187b4-69a3-4845-9eca-c0cd66cb6c48",
"title": "S230707o - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230707o/files/cwb.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230707o/view/"
},
"event": {
"far": 1.92919e-05,
"time": "2023-07-07T06:49:08.586Z",
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"sequence_num": 2,
"time_created": "2023-07-07T06:54:51Z",
"superevent_id": "S230707o",
"external_coinc": null
},
"message_text": "",
"published": "2023-07-07T06:54:52.242420Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-07-07T06:54:52.242444Z",
"modified": "2023-07-07T06:54:52.248667Z",
"nonlocalizedevents": [],
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},
{
"id": 960,
"topic": "igwn.gwalert",
"uuid": "3d900899-6b33-43e8-ad34-67b81469d0d3",
"title": "S230707v - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230707v/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230707v/view/"
},
"event": {
"far": 1.165973624529962e-06,
"time": "2023-07-07T08:51:50.389Z",
"group": "CBC",
"search": "AllSky",
"area_50": 456.0511844666178,
"area_90": 1591.9302215542807,
"duration": null,
"pipeline": "pycbc",
"properties": {
"HasNS": 1.0,
"HasMassGap": 0.45594227994228,
"HasRemnant": 1.0
},
"instruments": [
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"L1"
],
"significant": false,
"skymap_hash": "4b77ec1dc8e93e15a411c4233035f467",
"classification": {
"BBH": 0.0,
"BNS": 0.028688637703657028,
"NSBH": 0.0,
"Terrestrial": 0.971311362296343
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-07-07T08:52:27Z",
"superevent_id": "S230707v",
"external_coinc": null
},
"message_text": "",
"published": "2023-07-07T08:52:29.156452Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-07-07T08:52:29.156496Z",
"modified": "2023-07-07T08:52:29.167868Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 961,
"topic": "igwn.gwalert",
"uuid": "2139903d-da83-4b6f-8d00-a2171cc64e74",
"title": "S230707v - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230707v/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230707v/view/"
},
"event": {
"far": 1.165973624529962e-06,
"time": "2023-07-07T08:51:50.389Z",
"group": "CBC",
"search": "AllSky",
"area_50": 456.0511844666178,
"area_90": 1591.9302215542807,
"duration": null,
"pipeline": "pycbc",
"properties": {
"HasNS": 1.0,
"HasMassGap": 0.45594227994228,
"HasRemnant": 1.0
},
"instruments": [
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"significant": false,
"skymap_hash": "4b77ec1dc8e93e15a411c4233035f467",
"classification": {
"BBH": 0.0,
"BNS": 0.028688637703657028,
"NSBH": 0.0,
"Terrestrial": 0.971311362296343
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-07-07T08:57:02Z",
"superevent_id": "S230707v",
"external_coinc": null
},
"message_text": "",
"published": "2023-07-07T08:57:03.100113Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-07-07T08:57:03.100137Z",
"modified": "2023-07-07T08:57:03.106373Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 962,
"topic": "igwn.gwalert",
"uuid": "4b5669af-2243-4562-89a1-2b3fe2936148",
"title": "S230707ab - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230707ab/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230707ab/view/"
},
"event": {
"far": 9.755090930358387e-06,
"time": "2023-07-07T10:25:32.614Z",
"group": "CBC",
"search": "AllSky",
"area_50": 451.48752527078216,
"area_90": 1626.9707312418468,
"duration": null,
"pipeline": "pycbc",
"properties": {
"HasNS": 0.33551606681006296,
"HasMassGap": 0.3999507535186328,
"HasRemnant": 0.0
},
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"L1"
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"significant": false,
"skymap_hash": "003f22dc802e63d531b10f5ca469c0fc",
"classification": {
"BBH": 0.04223661354218942,
"BNS": 0.0,
"NSBH": 0.020362554838780005,
"Terrestrial": 0.9374008316190305
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-07-07T10:25:57Z",
"superevent_id": "S230707ab",
"external_coinc": null
},
"message_text": "",
"published": "2023-07-07T10:25:58.488452Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-07-07T10:25:58.488494Z",
"modified": "2023-07-07T10:25:58.497273Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 963,
"topic": "igwn.gwalert",
"uuid": "42377e55-e0a6-4648-91de-6f1fe8587b2c",
"title": "S230707ab - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230707ab/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230707ab/view/"
},
"event": {
"far": 9.755090930358387e-06,
"time": "2023-07-07T10:25:32.614Z",
"group": "CBC",
"search": "AllSky",
"area_50": 451.48752527078216,
"area_90": 1626.9707312418468,
"duration": null,
"pipeline": "pycbc",
"properties": {
"HasNS": 0.33551606681006296,
"HasMassGap": 0.3999507535186328,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "003f22dc802e63d531b10f5ca469c0fc",
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"BBH": 0.04223661354218942,
"BNS": 0.0,
"NSBH": 0.020362554838780005,
"Terrestrial": 0.9374008316190305
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-07-07T10:30:32Z",
"superevent_id": "S230707ab",
"external_coinc": null
},
"message_text": "",
"published": "2023-07-07T10:30:34.363680Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-07-07T10:30:34.363703Z",
"modified": "2023-07-07T10:30:34.369614Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 964,
"topic": "gcn.circular",
"uuid": "e75d74fc-2174-4437-8fb4-47305427ae3d",
"title": "ZTF23aaoohpy/AT2023lcr : HCT follow-up observations",
"submitter": "Hop gcn.circular",
"authors": "Vishwajeet Swain at IIT Bombay <vishwajeet.s@iitb.ac.in>",
"data": {
"date": "23/07/07 10:33:38 GMT",
"from": "Vishwajeet Swain at IIT Bombay <vishwajeet.s@iitb.ac.in>",
"title": "GCN CIRCULAR",
"number": "34158",
"subject": "ZTF23aaoohpy/AT2023lcr : HCT follow-up observations"
},
"message_text": "H. Kumar (IITB), V. Swain (IITB), G. C. Anupama (IIA), S. Barway (IIA), V. Bhalerao (IITB), D.K. Sahu (IIA), R.S. Teja (IIA), R. Gupta (ARIES), K. Mishra (ARIES), D. Panchal (ARIES), S.B. Pandey (ARIES):\n\nWe observed ZTF23aaoohpy/AT2023lcr (Swain et al., GCN 34022) with the 2.0m Himalayan Chandra Telescope (HCT) of the Indian Astronomical Observatory (IAO). We obtained exposures in the SDSS r' filter. We detected the source in our stacked images and got the following photometric result:\n\n-------------------------------------------------------------------\n\n JD (mid) | Exposure (sec) | Filter | Magnitude (AB) |\n\n-------------------------------------------------------------------\n\n 2460120.325395 | 8 x 300 | r' | 22.74 +/- 0.18 |\n\n-------------------------------------------------------------------\n\nThe magnitudes are calibrated against PanSTARRS DR1 (Chambers et al., 2016) and not corrected for Galactic extinction.\n\nThese observations were carried out under the ToO program HCT-2023-C2-P15. We thank the HCT staff for their support during the observations. The Indian Astronomical Observatory is operated by the Indian Institute of Astrophysics, Bengaluru, India.\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg4NzI2MDI0LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.IMCL1CLDPsE6IZPFgXpbDkY5inBpcF0YGN8Lu27eRAs\n\n",
"published": "2023-07-07T10:33:52.755537Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-07-07T10:33:52.755557Z",
"modified": "2023-07-07T10:33:52.761774Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 965,
"topic": "igwn.gwalert",
"uuid": "9a6ecd19-32b9-4bb1-bda0-bcd4a72ebbb0",
"title": "S230707ac - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230707ac/files/cwb.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230707ac/view/"
},
"event": {
"far": 1.61614e-05,
"time": "2023-07-07T11:16:16.301Z",
"group": "Burst",
"search": "BBH",
"area_50": 612.6843610041518,
"area_90": 3190.994439092857,
"duration": 0.012732,
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"sequence_num": 1,
"time_created": "2023-07-07T11:17:44Z",
"superevent_id": "S230707ac",
"external_coinc": null
},
"message_text": "",
"published": "2023-07-07T11:17:46.039489Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-07-07T11:17:46.039511Z",
"modified": "2023-07-07T11:17:46.045671Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 966,
"topic": "gcn.circular",
"uuid": "93e75e8e-d0e3-48a3-ade5-3d3588463fdf",
"title": "GRB 230707A: Swift/BAT-GUANO arcminute localization of a burst",
"submitter": "Hop gcn.circular",
"authors": "Aaron Tohuvavohu at University of Toronto <aaron.tohu@gmail.com>",
"data": {
"date": "23/07/07 11:21:40 GMT",
"from": "Aaron Tohuvavohu at University of Toronto <aaron.tohu@gmail.com>",
"title": "GCN CIRCULAR",
"number": "34159",
"subject": "GRB 230707A: Swift/BAT-GUANO arcminute localization of a burst"
},
"message_text": "Aaron Tohuvavohu (U Toronto), James DeLaunay (U Alabama), Gayathri Raman (PSU), Jamie A. Kennea (PSU), Tyler Parsotan (NASA GSFC) report:\n\nSwift/BAT did not localize GRB 230707A onboard (T0: 2023-07-07T03:22:51 UTC, Fermi/GBM GCN 34156).\n\nThe Fermi 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\nThe burst is ~15 s in duration as seen by BAT.\n\nIn ground analysis of the available data, we find the position of the burst with SNR 10.0 in the image domain.\nThe BAT position is RA, Dec = 171.4759 -21.5125, which is:\n RA (J2000) 11h 25m 54.22s\n Dec (J2000) -21d 30' 45.0\"\nwith an estimated uncertainty of 2 arcminutes.\n\nXRT and UVOT follow-up has been requested.\nResults of follow-up observations will be reported in future circulars.\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.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg4NzI4OTA1LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.FBCaarNQax1DlGDZ748euLsRrEaAS4bg9ssqhio-MMo\n\n",
"published": "2023-07-07T11:21:50.556236Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-07-07T11:21:50.556254Z",
"modified": "2023-07-07T11:21:50.562578Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 967,
"topic": "igwn.gwalert",
"uuid": "d0f16b6a-09be-4aa5-a519-35585a0ece72",
"title": "S230707ac - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230707ac/files/cwb.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230707ac/view/"
},
"event": {
"far": 1.61614e-05,
"time": "2023-07-07T11:16:16.301Z",
"group": "Burst",
"search": "BBH",
"area_50": 612.6843610041518,
"area_90": 3190.994439092857,
"duration": 0.012732,
"pipeline": "CWB",
"properties": {},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "6bcd304fbf464a93c397d45caaa3b022",
"classification": {},
"skymap_version": 0,
"central_frequency": 121.537811
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-07-07T11:22:19Z",
"superevent_id": "S230707ac",
"external_coinc": null
},
"message_text": "",
"published": "2023-07-07T11:22:20.640727Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-07-07T11:22:20.640765Z",
"modified": "2023-07-07T11:22:20.647154Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 968,
"topic": "gcn.circular",
"uuid": "bd68be09-ceed-4004-bdaa-b6359e6ae4b4",
"title": "GRB 230707A: Swift ToO observations",
"submitter": "Hop gcn.circular",
"authors": "Phil Evans at U of Leicester <pae9@star.le.ac.uk>",
"data": {
"date": "23/07/07 12:28:56 GMT",
"from": "Phil Evans at U of Leicester <pae9@star.le.ac.uk>",
"title": "GCN CIRCULAR",
"number": "34160",
"subject": "GRB 230707A: Swift ToO observations"
},
"message_text": "P. A. Evans (U. Leicester) reports on behalf of the Swift team:\n\nSwift has initiated a ToO observation of the Swift/BAT-GUANO GRB 230707A.\nAutomated analysis of the XRT data will be presented online at\nhttps://www.swift.ac.uk/ToO_GRBs/00021587\n\nAny uncatalogued X-ray sources detected in this analysis will be\nreported on this website and via GCN COUNTERPART notices. These are\nnot necessarily related to the Swift/BAT-GUANO event. Any X-ray source\nconsidered to be a probable afterglow candidate will be reported via a\nGCN Circular after manual consideration.\n\nDetails of the XRT automated analysis methods are detailed in Evans et\nal. (2007, A&A, 469, 379; 2009, MNRAS, 397, 1177 and 2014, ApJS, 210, 8).\n\nThis circular is an official product of the Swift-XRT team.\n\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg4NzMyOTQyLCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.qCuKRYcSqpldhT2g2g6JfrG40fY5ZCKSWiiuWWWvUA4\n\n",
"published": "2023-07-07T12:29:07.148605Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-07-07T12:29:07.148634Z",
"modified": "2023-07-07T12:29:07.158167Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 969,
"topic": "igwn.gwalert",
"uuid": "28828e64-bda1-4540-8189-81c94f14b410",
"title": "S230707ai - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230707ai/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230707ai/view/"
},
"event": {
"far": 2.027425402512038e-09,
"time": "2023-07-07T12:40:47.356Z",
"group": "CBC",
"search": "AllSky",
"area_50": 761.2393362065285,
"area_90": 2781.4191402298075,
"duration": null,
"pipeline": "gstlal",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.0,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": true,
"skymap_hash": "fd10bca8590080481574938cc6117525",
"classification": {
"BBH": 0.9981950088463297,
"BNS": 1.0951789865838849e-24,
"NSBH": 8.241970311773602e-23,
"Terrestrial": 0.0018049911536702767
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-07-07T12:41:16Z",
"superevent_id": "S230707ai",
"external_coinc": null
},
"message_text": "",
"published": "2023-07-07T12:41:17.105865Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-07-07T12:41:17.105908Z",
"modified": "2023-07-07T12:41:17.114782Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 970,
"topic": "igwn.gwalert",
"uuid": "79c62297-9a2f-49f1-85af-26fb13f9fe30",
"title": "S230707ai - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230707ai/files/bayestar.multiorder.fits,1",
"gracedb": "https://gracedb.ligo.org/superevents/S230707ai/view/"
},
"event": {
"far": 1.376458e-08,
"time": "2023-07-07T12:40:47.349Z",
"group": "CBC",
"search": "AllSky",
"area_50": 744.6632867136079,
"area_90": 2713.4363549677028,
"duration": null,
"pipeline": "MBTA",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.0,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": true,
"skymap_hash": "ad4705d838a796dbb1ccf3d238d3e404",
"classification": {
"BBH": 0.9510657,
"BNS": 0.0,
"NSBH": 0.0,
"Terrestrial": 0.0489343
},
"skymap_version": 1,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-07-07T12:45:57Z",
"superevent_id": "S230707ai",
"external_coinc": null
},
"message_text": "",
"published": "2023-07-07T12:45:57.940136Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-07-07T12:45:57.940179Z",
"modified": "2023-07-07T12:45:57.951868Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 971,
"topic": "igwn.gwalert",
"uuid": "6fe6fec1-d1e1-44b9-86ea-7b29f9fcadcb",
"title": "S230707aj - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230707aj/files/cwb.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230707aj/view/"
},
"event": {
"far": 7.98329e-06,
"time": "2023-07-07T13:13:09.467Z",
"group": "Burst",
"search": "BBH",
"area_50": 769.6322726586402,
"area_90": 4238.432908316393,
"duration": 0.01877,
"pipeline": "CWB",
"properties": {},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "dac82483214d89ccd33616e2922cc76e",
"classification": {},
"skymap_version": 0,
"central_frequency": 39.845379
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-07-07T13:14:49Z",
"superevent_id": "S230707aj",
"external_coinc": null
},
"message_text": "",
"published": "2023-07-07T13:14:51.247176Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-07-07T13:14:51.247211Z",
"modified": "2023-07-07T13:14:51.255363Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 972,
"topic": "igwn.gwalert",
"uuid": "08f23eee-96cf-488e-8e69-192edb2519ea",
"title": "S230707aj - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230707aj/files/cwb.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230707aj/view/"
},
"event": {
"far": 7.98329e-06,
"time": "2023-07-07T13:13:09.467Z",
"group": "Burst",
"search": "BBH",
"area_50": 769.6322726586402,
"area_90": 4238.432908316393,
"duration": 0.01877,
"pipeline": "CWB",
"properties": {},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "dac82483214d89ccd33616e2922cc76e",
"classification": {},
"skymap_version": 0,
"central_frequency": 39.845379
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-07-07T13:19:33Z",
"superevent_id": "S230707aj",
"external_coinc": null
},
"message_text": "",
"published": "2023-07-07T13:19:33.787067Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-07-07T13:19:33.787096Z",
"modified": "2023-07-07T13:19:33.793550Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 973,
"topic": "igwn.gwalert",
"uuid": "749a2195-9389-4746-b242-db28c7ead415",
"title": "S230707ai - INITIAL",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230707ai/files/bayestar.multiorder.fits,1",
"gracedb": "https://gracedb.ligo.org/superevents/S230707ai/view/"
},
"event": {
"far": 1.376458e-08,
"time": "2023-07-07T12:40:47.349Z",
"group": "CBC",
"search": "AllSky",
"area_50": 744.6632867136079,
"area_90": 2713.4363549677028,
"duration": null,
"pipeline": "MBTA",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.0,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": true,
"skymap_hash": "ad4705d838a796dbb1ccf3d238d3e404",
"classification": {
"BBH": 0.9510657,
"BNS": 0.0,
"NSBH": 0.0,
"Terrestrial": 0.0489343
},
"skymap_version": 1,
"central_frequency": null
},
"alert_type": "INITIAL",
"sequence_num": 3,
"time_created": "2023-07-07T13:32:24Z",
"superevent_id": "S230707ai",
"external_coinc": null
},
"message_text": "",
"published": "2023-07-07T13:32:25.670391Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-07-07T13:32:25.670429Z",
"modified": "2023-07-07T13:32:25.676949Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 974,
"topic": "gcn.circular",
"uuid": "a944d10c-85ec-46ad-bcd5-cbe3b052aa92",
"title": "LIGO/Virgo/KAGRA S230707ai: Identification of a GW compact binary merger candidate",
"submitter": "Hop gcn.circular",
"authors": "davide.guerra@ligo.org",
"data": {
"date": "23/07/07 13:53:41 GMT",
"from": "davide.guerra@ligo.org",
"title": "GCN CIRCULAR",
"number": "34161",
"subject": "LIGO/Virgo/KAGRA S230707ai: 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 S230707ai during\nreal-time processing of data from LIGO Hanford Observatory (H1) and\nLIGO Livingston Observatory (L1) at 2023-07-07 12:40:47.349 UTC (GPS\ntime: 1372768865.349). The candidate was found by the CWB [1], MBTA\n[2], GstLAL [3], PyCBC Live [4], and SPIIR [5] analysis pipelines.\n\nS230707ai is an event of interest because its false alarm rate, as\nestimated by the online analysis, is 1.4e-08 Hz, or about one in 2\nyears. The event's properties can be found at this URL:\n\nhttps://gracedb.ligo.org/superevents/S230707ai\n\nThe classification of the GW signal, in order of descending\nprobability, is BBH (95%), Terrestrial (5%), BNS (<1%), or NSBH (<1%).\n\nAssuming the candidate is astrophysical in origin, the probability\nthat the lighter compact object is consistent with a neutron star mass\n(HasNS) is <1%. [6] Using the masses and spins inferred from the\nsignal, the probability of matter outside the final compact object\n(HasRemnant) is <1%. [6] Both HasNS and HasRemnant consider the\nsupport of several neutron star equations of state. The probability\nthat either of the binary components lies between 3 and 5 solar masses\n(HasMassgap) is <1%.\n\nTwo sky maps are available at this time and can be retrieved from the\nGraceDB event page:\n * bayestar.multiorder.fits,1, an initial localization generated by\nBAYESTAR [7], distributed via GCN notice about 28 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\n2714 deg2. Marginalized over the whole sky, the a posteriori\nluminosity distance estimate is 3766 +/- 1135 Mpc (a posteriori mean\n+/- standard deviation).\n\nFor further information about analysis methodology and the contents of\nthis alert, refer to the LIGO/Virgo/KAGRA Public Alerts User Guide\nhttps://emfollow.docs.ligo.org/userguide/.\n\n [1] Klimenko et al. PRD 93, 042004 (2016)\n [2] 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\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg4NzM4MDI2LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.qrLh5wzVZeiICKQ41Kmdnh69pCTI_VMdSYL_HwulAfc\n\n",
"published": "2023-07-07T13:53:51.798148Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-07-07T13:53:51.798181Z",
"modified": "2023-07-07T13:53:51.806833Z",
"nonlocalizedevents": [
{
"event_id": "S230707a"
}
],
"targets": []
},
{
"id": 975,
"topic": "igwn.gwalert",
"uuid": "62184ca2-c3b8-4969-aafd-5663e9f5351e",
"title": "S230707ay - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230707ay/files/cwb.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230707ay/view/"
},
"event": {
"far": 1.49326e-05,
"time": "2023-07-07T15:53:23.952Z",
"group": "Burst",
"search": "BBH",
"area_50": 1506.532093154045,
"area_90": 8830.208441266688,
"duration": 0.035784,
"pipeline": "CWB",
"properties": {},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "8ecaf93aba79abdf2e3ac1d8197456f8",
"classification": {},
"skymap_version": 0,
"central_frequency": 28.69986
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-07-07T15:56:19Z",
"superevent_id": "S230707ay",
"external_coinc": null
},
"message_text": "",
"published": "2023-07-07T15:56:20.787560Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-07-07T15:56:20.787587Z",
"modified": "2023-07-07T15:56:20.795879Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 976,
"topic": "igwn.gwalert",
"uuid": "ca413702-83d5-4b9c-b238-fca40a417a8e",
"title": "S230707ay - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230707ay/files/cwb.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230707ay/view/"
},
"event": {
"far": 1.49326e-05,
"time": "2023-07-07T15:53:23.952Z",
"group": "Burst",
"search": "BBH",
"area_50": 1506.532093154045,
"area_90": 8830.208441266688,
"duration": 0.035784,
"pipeline": "CWB",
"properties": {},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "8ecaf93aba79abdf2e3ac1d8197456f8",
"classification": {},
"skymap_version": 0,
"central_frequency": 28.69986
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-07-07T16:00:55Z",
"superevent_id": "S230707ay",
"external_coinc": null
},
"message_text": "",
"published": "2023-07-07T16:00:56.612758Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-07-07T16:00:56.612802Z",
"modified": "2023-07-07T16:00:56.619124Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 977,
"topic": "gcn.circular",
"uuid": "7a04e829-3885-44d4-979c-4a9989b6146b",
"title": "GRB 230707A: Fermi GBM Detection",
"submitter": "Hop gcn.circular",
"authors": "Peter Veres at University of Alabama in Huntsville <veresp@gmail.com>",
"data": {
"date": "23/07/07 17:52:03 GMT",
"from": "Peter Veres at University of Alabama in Huntsville <veresp@gmail.com>",
"title": "GCN CIRCULAR",
"number": "34162",
"subject": "GRB 230707A: Fermi GBM Detection"
},
"message_text": "P. Veres and C. Meegan (both UAH) report on behalf of\nthe Fermi Gamma-ray Burst Monitor Team:\n\n\"At 03:22:51.96 UT on 07 July 2023, the Fermi Gamma-ray Burst Monitor (GBM)\ntriggered and located GRB 230707A (trigger 710392976/230707141),\nwhich was also detected by the Swift/BAT-GUANO (Tohuvavohu et al.\n2023, GCN 34159).\nThe Fermi GBM Final Real-time Localization (GCN 34156) is consistent\nwith the Swift position.\nThe angle from the Fermi LAT boresight is 63 degrees.\n\nThe GBM light curve consists of multiple pulses with a duration (T90)\nof about 29 s (50-300 keV). The time-averaged spectrum\nfrom T0-2.8 to T0+30.0 s is best fit by\na power law function with an exponential high-energy cutoff.\nThe power law index is -0.77 +/- 0.08 and the cutoff energy,\nparameterized as Epeak, is 121 +/- 7 keV.\n\nThe event fluence (10-1000 keV) in this time interval is\n(6.9 +/- 0.2)E-06 erg/cm^2. The 1-sec peak photon flux measured\nstarting from T0+1.5 s in the 10-1000 keV band is 6.5 +/- 0.3 ph/s/cm^2.\n\nA Band function fits the spectrum equally well\nwith Epeak= 110 +/- 10 keV, alpha = -0.7 +/- 0.1 and beta = -2.5 +/- 0.2.\n\n\nThe spectral analysis results presented above are preliminary;\nfinal results will be published in the GBM GRB Catalog:\nhttps://heasarc.gsfc.nasa.gov/W3Browse/fermi/fermigbrst.html\n\nFor Fermi GBM data and info, please visit the official Fermi GBM Support Page:\nhttps://fermi.gsfc.nasa.gov/ssc/data/access/gbm/\"\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg4NzUyMzI5LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.HND-SDAcvYrjsKNe3Xeu1oEFG8q1SLcedkOaIRLhkU8\n\n",
"published": "2023-07-07T17:52:18.295427Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-07-07T17:52:18.295479Z",
"modified": "2023-07-07T17:52:18.302654Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 978,
"topic": "gcn.circular",
"uuid": "73278d21-7b42-4493-b1fa-79e9b31e64b8",
"title": "IceCube-230707A - IceCube observation of a high-energy neutrino candidate track-like event",
"submitter": "Hop gcn.circular",
"authors": "Massimiliano Lincetto at Ruhr-Universitaet Bochum <lincetto@astro.ruhr-uni-bochum.de>",
"data": {
"date": "23/07/07 18:14:43 GMT",
"from": "Massimiliano Lincetto at Ruhr-Universitaet Bochum <lincetto@astro.ruhr-uni-bochum.de>",
"title": "GCN CIRCULAR",
"number": "34163",
"subject": "IceCube-230707A - IceCube observation of a high-energy neutrino candidate track-like event"
},
"message_text": "The IceCube Collaboration (http://icecube.wisc.edu/) reports:\n\nOn 23-07-07 at 16:58:50.03 UT IceCube detected a track-like event with\na high probability of being of astrophysical origin.\n\nThe event was selected by the ICECUBE_Astrotrack_GOLD alert stream. The\naverage astrophysical neutrino purity for Gold alerts is 50%. This\nalert has an estimated false alarm rate of 0.4443 events per year due\nto atmospheric backgrounds. The IceCube detector was in a normal\noperating state at the time of detection. After the initial automated\nalert\n(https://gcn.gsfc.nasa.gov/notices_amon_g_b/138125_11333473.amon), more\nsophisticated reconstruction algorithms have been applied offline, with\nthe direction refined to:\n\nDate: 23-07-07\nTime: 16:58:50.03 UT\nRA: 269.03 (+0.88 / -0.76 deg 90% PSF containment) J2000\nDec: -1.94 (+0.53 / -0.54 deg 90% PSF containment) J2000\n\nWe encourage follow-up by ground and space-based instruments to help\nidentify a possible astrophysical source for the candidate neutrino.\n\nThere are no Fermi 4FGL-DR3 or 3FHL catalog sources in the 90%\nuncertainty region. The nearest gamma-ray source in either catalog is\n4FGL J1759.0-0107 at RA: 269.77 deg, Dec: -1.12 deg (1.10 deg away from\nthe best-fit event position).\n\nThe IceCube Neutrino Observatory is a cubic-kilometer neutrino detector\noperating at the geographic South Pole, Antarctica. The IceCube\nrealtime alert point of contact can be reached at roc@icecube.wisc.edu\n\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg4NzUzNjg5LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.4-jdqGgciOhZcVKfarNdUvsEospgXaTke14MKqHdjrI\n\n",
"published": "2023-07-07T18:14:54.018975Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-07-07T18:14:54.018998Z",
"modified": "2023-07-07T18:14:54.026189Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 979,
"topic": "igwn.gwalert",
"uuid": "94b06220-4b51-4d0e-8c0f-2a372b612d5e",
"title": "S230707bh - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230707bh/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230707bh/view/"
},
"event": {
"far": 6.213635909387818e-06,
"time": "2023-07-07T18:17:28.723Z",
"group": "CBC",
"search": "AllSky",
"area_50": 691.5779636540016,
"area_90": 2448.2195630809742,
"duration": null,
"pipeline": "gstlal",
"properties": {
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"HasMassGap": 0.03210230956782681,
"HasRemnant": 0.0
},
"instruments": [
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],
"significant": false,
"skymap_hash": "ca8a392c63f0874d097887c82eb80d16",
"classification": {
"BBH": 0.29600827979365174,
"BNS": 5.808759295180135e-14,
"NSBH": 4.16492423697013e-12,
"Terrestrial": 0.7039917202021253
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-07-07T18:17:50Z",
"superevent_id": "S230707bh",
"external_coinc": null
},
"message_text": "",
"published": "2023-07-07T18:17:52.068582Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-07-07T18:17:52.068612Z",
"modified": "2023-07-07T18:17:52.074666Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 980,
"topic": "igwn.gwalert",
"uuid": "25527103-91a6-4f2b-8c2d-d4cb8ef6a212",
"title": "S230707bh - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230707bh/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230707bh/view/"
},
"event": {
"far": 6.213635909387818e-06,
"time": "2023-07-07T18:17:28.723Z",
"group": "CBC",
"search": "AllSky",
"area_50": 691.5779636540016,
"area_90": 2448.2195630809742,
"duration": null,
"pipeline": "gstlal",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.03210230956782681,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "ca8a392c63f0874d097887c82eb80d16",
"classification": {
"BBH": 0.29600827979365174,
"BNS": 5.808759295180135e-14,
"NSBH": 4.16492423697013e-12,
"Terrestrial": 0.7039917202021253
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-07-07T18:22:31Z",
"superevent_id": "S230707bh",
"external_coinc": null
},
"message_text": "",
"published": "2023-07-07T18:22:33.315004Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-07-07T18:22:33.315034Z",
"modified": "2023-07-07T18:22:33.321017Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 981,
"topic": "gcn.circular",
"uuid": "b62fee65-562c-4b96-bbd0-aadc9128099b",
"title": "IceCube Alert 230707.71: Global MASTER-Net observations report",
"submitter": "Hop gcn.circular",
"authors": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"data": {
"date": "23/07/07 18:39:41 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "34164",
"subject": "IceCube Alert 230707.71: 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 IceCube Alert 230707.71 (trigger No 11333473,17h 56m 07.20s , -01d 56m 24.0s, R=0.68) errorbox 5139 sec after notice time and 5201 sec after trigger time at 2023-07-07 18:25:31 UT, with upper limit up to 16.1 mag. Observations started at twilight. The observations began at zenith distance = 54 deg. The sun altitude is -8.9 deg.\n\nThe galactic latitude b = 11 deg., longitude l = 25 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/observ.php?id\"34920\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 5291 | 2023-07-07 18:25:31 | MASTER-Tavrida | (17h 53m 25.13s , -01d 44m 34.7s) | C | 180 | 13.7 |\n 5481 | 2023-07-07 18:28:41 | MASTER-Tavrida | (17h 53m 22.65s , -01d 43m 08.7s) | C | 180 | 15.8 |\n 5670 | 2023-07-07 18:31:50 | MASTER-Tavrida | (17h 53m 22.73s , -01d 44m 48.1s) | C | 180 | 16.1 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg4NzU1MTg3LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.GhTHF7dLpmzX_Yag3xWGUFqsOhzoxApmTcedryW1ff4\n\n",
"published": "2023-07-07T18:39:52.095924Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-07-07T18:39:52.095948Z",
"modified": "2023-07-07T18:39:52.103085Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 982,
"topic": "gcn.circular",
"uuid": "e3fe0fe5-a899-4dd9-8149-4f00dfcf158c",
"title": "GRB 230707B: 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": "23/07/07 18:56:58 GMT",
"from": "Fermi GBM Team at MSFC/Fermi-GBM <do_not_reply@GIOC.nsstc.nasa.gov>",
"title": "GCN CIRCULAR",
"number": "34165",
"subject": "GRB 230707B: Fermi GBM Final Real-time Localization"
},
"message_text": "The Fermi GBM team reports the detection of a likely LONG GRB\n\nAt 18:46:20 UT on 7 Jul 2023, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 230707B (trigger 710448385.289496 / 230707782).\n\nThe on-ground calculated location, using the Fermi GBM trigger data, is RA = 28.5, Dec = -41.3 (J2000 degrees, equivalent to J2000 01h 53m, -41d 17'), with a statistical uncertainty of 2.2 degrees.\n\nThe angle from the Fermi LAT boresight is 83.0 degrees.\n\nThe skymap can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn230707782/quicklook/glg_skymap_all_bn230707782.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/bn230707782/quicklook/glg_healpix_all_bn230707782.fit\n\nThe GBM light curve can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn230707782/quicklook/glg_lc_medres34_bn230707782.gif\n\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg4NzU2MjI0LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.Re_KHZokImdv3dy5E2pYurzyr6bTFTnyYbdEBh2RsyY\n\n",
"published": "2023-07-07T18:57:09.912426Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-07-07T18:57:09.912452Z",
"modified": "2023-07-07T18:57:09.918206Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 983,
"topic": "igwn.gwalert",
"uuid": "934dbbab-28f8-4640-9b44-cdf810df4d25",
"title": "S230707bl - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230707bl/files/cwb.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230707bl/view/"
},
"event": {
"far": 2.0711e-05,
"time": "2023-07-07T19:12:23.834Z",
"group": "Burst",
"search": "BBH",
"area_50": 3582.1052777612604,
"area_90": 11928.880579386316,
"duration": 0.043437,
"pipeline": "CWB",
"properties": {},
"instruments": [
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"L1"
],
"significant": false,
"skymap_hash": "df30268eea9bcbc26200f37a0583efc5",
"classification": {},
"skymap_version": 0,
"central_frequency": 22.895847
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-07-07T19:13:47Z",
"superevent_id": "S230707bl",
"external_coinc": null
},
"message_text": "",
"published": "2023-07-07T19:13:48.719229Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-07-07T19:13:48.719257Z",
"modified": "2023-07-07T19:13:48.725338Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 984,
"topic": "igwn.gwalert",
"uuid": "cfd8c252-9bcd-497f-afe1-eaf109360ce6",
"title": "S230707bl - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230707bl/files/cwb.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230707bl/view/"
},
"event": {
"far": 2.0711e-05,
"time": "2023-07-07T19:12:23.834Z",
"group": "Burst",
"search": "BBH",
"area_50": 3582.1052777612604,
"area_90": 11928.880579386316,
"duration": 0.043437,
"pipeline": "CWB",
"properties": {},
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"significant": false,
"skymap_hash": "df30268eea9bcbc26200f37a0583efc5",
"classification": {},
"skymap_version": 0,
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},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-07-07T19:18:21Z",
"superevent_id": "S230707bl",
"external_coinc": null
},
"message_text": "",
"published": "2023-07-07T19:18:23.409703Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-07-07T19:18:23.409732Z",
"modified": "2023-07-07T19:18:23.416281Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 985,
"topic": "gcn.circular",
"uuid": "54b9615b-7017-495d-b94a-754d3b9d1dcf",
"title": "IceCube-230707B - IceCube observation of a high-energy neutrino candidate track-like event",
"submitter": "Hop gcn.circular",
"authors": "Marcos Santander at U of Alabama <jmsantander@ua.edu>",
"data": {
"date": "23/07/07 19:37:40 GMT",
"from": "Marcos Santander at U of Alabama <jmsantander@ua.edu>",
"title": "GCN CIRCULAR",
"number": "34166",
"subject": "IceCube-230707B - IceCube observation of a high-energy neutrino candidate track-like event"
},
"message_text": "\nThe IceCube Collaboration (http://icecube.wisc.edu/) reports:\n\nOn 23-07-07 at 18:56:51.44 UT IceCube detected a track-like event with a moderate probability of being of astrophysical origin.\n\nThe event was selected by the ICECUBE_Astrotrack_Bronze alert stream. The average astrophysical neutrino purity for Bronze alerts is 30%. This alert has an estimated false alarm rate of 1.358 events per year due to atmospheric backgrounds. The IceCube detector was in a normal operating state at the time of detection. After the initial automated alert (https://gcn.gsfc.nasa.gov/notices_amon_g_b/138125_29513102.amon) more sophisticated reconstruction algorithms have been applied offline, with the direction refined to:\n\nDate: 23-07-07\nTime: 18:56:51.44 UT\nRA: 127.18 (+11.41 deg, -8.66 deg 90% PSF containment) J2000\nDec: 20.74 (+11.41 deg, -9.16 deg 90% PSF containment) J2000\n\nThe large directional uncertainty is due to the muon that triggered the event clipping a corner of the detector and therefore producing a short track.\n\nWe encourage follow-up by ground and space-based instruments to help identify a possible astrophysical source for the candidate neutrino.\n\nGiven the size of the uncertainty region, there is a large number (>30) of Fermi 4FGL-DR3 or 3FHL catalog sources in the 90% uncertainty region.\n\nThe IceCube Neutrino Observatory is a cubic-kilometer neutrino detector operating at the geographic South Pole, Antarctica. The IceCube realtime alert point of contact can be reached at roc@icecube.wisc.edu\n\n\n\n\n\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjg4NzU4NjY1LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.qTk9CqRo5ER_o6phfMcWEGENbevfePpBoLAPf4_XDsc\n\n",
"published": "2023-07-07T19:37:50.992584Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-07-07T19:37:50.992612Z",
"modified": "2023-07-07T19:37:50.998889Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 986,
"topic": "igwn.gwalert",
"uuid": "4b44ccb2-351c-4176-9efa-c4b429065978",
"title": "S230707bo - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230707bo/files/cwb.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230707bo/view/"
},
"event": {
"far": 1.43385e-05,
"time": "2023-07-07T20:17:27.484Z",
"group": "Burst",
"search": "BBH",
"area_50": 656.3276305551327,
"area_90": 2127.6093906103083,
"duration": 0.009819,
"pipeline": "CWB",
"properties": {},
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],
"significant": false,
"skymap_hash": "965a15a184be977dfb3c7ea6fd8e9848",
"classification": {},
"skymap_version": 0,
"central_frequency": 98.466454
},
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