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"title": "S230916bq - PRELIMINARY",
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{
"id": 3059,
"topic": "gcn.circular",
"uuid": "9a1a3c52-a91d-41b2-9089-ba96c035125d",
"title": "Fermi trigger No 716544961: 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": "23/09/16 21:30:31 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "34716",
"subject": "Fermi trigger No 716544961: Global MASTER-Net observations report"
},
"message_text": "V. Lipunov, V.Kornilov, E. Gorbovskoy, K. Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, V.Senik, D. Vlasenko,\nG.Antipov, D.Zimnukhov, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D. Cheryasov, Ya.Kechin, Yu.Tselik, A. Sosnovskij\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. Gress, N.M. Budnev, O.Ershova\n(Irkutsk State University, API),\n\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez,\nA.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\nV. Yurkov, A. Gabovich\n(Blagoveschensk Educational State University)\n\nMASTER-Amur robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Russia (Blagoveshchensk State Pedagogical University) started inspect of the Fermi GRB230916.34 (trigger No 716544961,10h 46m 48.00s , +12d 52m 58.8s, R5.95) errorbox 35284 sec after notice time and 35318 sec after trigger time at 2023-09-16 18:04:34 UT, with upper limit up to 12.3 mag. The observations began at zenith distance = 84 deg. The sun altitude is -27.3 deg.\n\nThe galactic latitude b = 58 deg., longitude l = 234 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/observ.php?id\"71436\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 35349 | 2023-09-16 18:04:34 | MASTER-Amur | (12h 01m 18.82s , +41d 11m 24.1s) | C | 60 | 12.3 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n\n\n\nView this GCN Circular online at https://gcn.nasa.gov/circulars/34716.\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjk0ODk5ODM2LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.N9hzXmfkHz-9qvWRwlJffNoLuwAehihpP6hsik3vkvc\n\n",
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"uuid": "fac75ae5-e780-47c8-8f47-01703214de64",
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"id": 9380,
"topic": "lvk-users.beccatest",
"uuid": "6509b79d-9e97-4ddf-9417-a3fae7b63a10",
"title": "Generic Message",
"submitter": "",
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"published": "2024-05-23T20:10:06.888429Z",
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{
"id": 9381,
"topic": "lvk-users.beccatest",
"uuid": "980990ea-e334-4b3d-a739-9ea7b46608a1",
"title": "Generic Message",
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1400530300
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"published": "2024-05-23T20:11:38.462438Z",
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{
"id": 9382,
"topic": "lvk-users.beccatest",
"uuid": "6815b90c-9674-4d7b-b124-5a85465db683",
"title": "Generic Message",
"submitter": "",
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"published": "2024-05-23T20:11:41.483199Z",
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{
"id": 3065,
"topic": "gcn.circular",
"uuid": "c09faded-d03e-4f81-8f91-f5d1eab7f0c0",
"title": "GRB 230911A: Fermi GBM Observation",
"submitter": "Hop gcn.circular",
"authors": "Oliver J Roberts at USRA/NASA <oliver.roberts@nasa.gov>",
"data": {
"date": "23/09/17 00:27:58 GMT",
"from": "Oliver J Roberts at USRA/NASA <oliver.roberts@nasa.gov>",
"title": "GCN CIRCULAR",
"number": "34720",
"subject": "GRB 230911A: Fermi GBM Observation"
},
"message_text": "O.J. Roberts (USRA/NASA-MSFC) and C. Meegan (UAH)\nreport on behalf of the Fermi Gamma-ray Burst Monitor Team:\n\n\"At 03:09:32.88 UT on 11 September 2023, the\nFermi Gamma-ray Burst Monitor (GBM) triggered and located\nGRB 230911A (trigger 716094577/230911132), which was also\ndetected by Swift/XRT (P. D'Avanzo et al. 2023, GCN 34702)\nand GOTO (S. Belkin et al. 2023, GCN 34681). The Fermi GBM\nFinal Real-time Localization reported in GCN 34652 is\nconsistent with the Swift-XRT and GOTO localizations.\n\nThe angle from the Fermi LAT boresight is 54 degrees.\n\nThe GBM light curve consists of a single peak with a\nduration (T90) of about 36 s (50-300 keV). The time-averaged\nspectrum from T0-4 to T0+30 s is best fit by a Band function\nwith Epeak= 98 +/- 21 keV, alpha = -1.1 +/- 0.1 and\nbeta = -2.0 +/- 0.1.\n\nThe event fluence (10-1000 keV) in this time interval is\n(6.2 +/- 0.3)E-06 erg/cm^2. The 1-sec peak photon flux measured\nstarting from T0+2.0 s in the 10-1000 keV band is 3.7 +/- 0.2 ph/s/cm^2.\n\nThe spectral analysis results presented above are preliminary;\nfinal results will be published in the GBM GRB Catalog:\nhttps://heasarc.gsfc.nasa.gov/W3Browse/fermi/fermigbrst.html\n\nFor Fermi GBM data and info, please visit the official Fermi GBM Support Page:\nhttps://fermi.gsfc.nasa.gov/ssc/data/access/gbm/\"\n\n\nView this GCN Circular online at https://gcn.nasa.gov/circulars/34720.\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjk0OTEwNDg0LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.bDrt1NHD1P-0fD3mqEGugJTR709i66vu04Tb50uiOdY\n\n",
"published": "2023-09-17T00:28:15.171055Z",
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{
"id": 4116,
"topic": "gcn.circular",
"uuid": "34c52dac-5f9f-4997-b31e-13186de5dca0",
"title": "Fermi trigger No 719846439: 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": "23/10/24 18:00:53 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"urls": {
"gcn": "https://gcn.nasa.gov/circulars/34875"
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"title": "GCN CIRCULAR",
"number": "34875",
"subject": "Fermi trigger No 719846439: Global MASTER-Net observations report"
},
"message_text": "V. Lipunov, V.Kornilov, E. Gorbovskoy, K. Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, V.Senik, D. Vlasenko,\nG.Antipov, D.Zimnukhov, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D. Cheryasov, Ya.Kechin, Yu.Tselik, A. Sosnovskij\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. Gress, N.M. Budnev, O.Ershova\n(Irkutsk State University, API),\n\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez,\nA.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\nV. Yurkov, A. Gabovich\n(Blagoveschensk Educational State University)\n\nMASTER-Tavrida robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Russia (Lomonosov MSU, SAI Crimea astronomical station) started inspect of the Fermi GRB231024.56 (trigger No 719846439,01h 01m 28.80s , -14d 03m 00.0s, R\u0012.61) errorbox 15849 sec after notice time and 15886 sec after trigger time at 2023-10-24 17:45:20 UT, with upper limit up to 17.1 mag. The observations began at zenith distance = 67 deg. The sun altitude is -32.8 deg.\n\nThe galactic latitude b = -76 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\"90597\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 15916 | 2023-10-24 17:45:20 | MASTER-Tavrida | (00h 55m 13.90s , -12d 02m 35.2s) | C | 60 | 15.8 |\n 15988 | 2023-10-24 17:46:32 | MASTER-Tavrida | (00h 56m 07.17s , -15d 50m 17.9s) | C | 60 | 13.2 |\n 16063 | 2023-10-24 17:47:47 | MASTER-Tavrida | (00h 54m 46.43s , -10d 07m 45.2s) | C | 60 | 16.5 |\n 16211 | 2023-10-24 17:50:15 | MASTER-Tavrida | (01h 10m 46.64s , -12d 02m 39.5s) | C | 60 | 15.1 |\n 16284 | 2023-10-24 17:51:28 | MASTER-Tavrida | (00h 54m 31.58s , -08d 14m 43.3s) | C | 60 | 17.1 |\n 16433 | 2023-10-24 17:53:57 | MASTER-Tavrida | (01h 10m 19.74s , -10d 07m 48.6s) | C | 60 | 16.5 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n\n\n\nView this GCN Circular online at https://gcn.nasa.gov/circulars/34875.",
"published": "2023-10-24T18:01:46.451710Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-10-24T18:01:46.451750Z",
"modified": "2023-10-24T18:01:46.461377Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 9387,
"topic": "lvk-users.beccatest",
"uuid": "5a983f6b-fe7e-4995-9d69-40d0f85dae0e",
"title": "Generic Message",
"submitter": "",
"authors": "",
"data": {
"ifo": [
"H1"
],
"time": [
1400530500
],
"range": 154.85284681741572
},
"message_text": "",
"published": "2024-05-23T20:15:00.235152Z",
"message_parser": "",
"retracted": false,
"created": "2024-05-23T20:15:00.235187Z",
"modified": "2024-05-23T20:15:00.235195Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 4417,
"topic": "igwn.gwalert",
"uuid": "d4eff69f-4ecb-4b67-bbfc-38e8db014862",
"title": "S231107g - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S231107g/files/cwb.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S231107g/view/"
},
"event": {
"far": 1.13774e-05,
"time": "2023-11-07T01:28:53.819Z",
"group": "Burst",
"search": "AllSky",
"area_50": 388.59295773277034,
"area_90": 1596.3365131916398,
"duration": 0.008501,
"pipeline": "CWB",
"properties": {},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "e95637d8b3b8aa2d4b73367954050003",
"classification": {},
"skymap_version": 0,
"central_frequency": 152.475739
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-11-07T01:30:35Z",
"superevent_id": "S231107g",
"external_coinc": null
},
"message_text": "",
"published": "2023-11-07T01:30:36.325843Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-11-07T01:30:36.325866Z",
"modified": "2023-11-07T01:30:36.341497Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 9388,
"topic": "lvk-users.beccatest",
"uuid": "5ec2ac32-c666-4007-8780-0c129e187070",
"title": "Generic Message",
"submitter": "",
"authors": "",
"data": {
"ifo": [
"L1"
],
"time": [
1400530500
],
"range": 164.29690345331667
},
"message_text": "",
"published": "2024-05-23T20:15:02.273402Z",
"message_parser": "",
"retracted": false,
"created": "2024-05-23T20:15:02.273447Z",
"modified": "2024-05-23T20:15:02.273461Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 9389,
"topic": "lvk-users.beccatest",
"uuid": "d8fe9878-b9b6-477d-baee-ea68d7f9a90c",
"title": "Generic Message",
"submitter": "",
"authors": "",
"data": {
"ifo": [
"V1"
],
"time": [
1400530500
],
"range": 49.806511214101334
},
"message_text": "",
"published": "2024-05-23T20:15:08.295329Z",
"message_parser": "",
"retracted": false,
"created": "2024-05-23T20:15:08.295354Z",
"modified": "2024-05-23T20:15:08.295362Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 9390,
"topic": "lvk-users.beccatest",
"uuid": "5e2c9064-9cc4-4fa1-a590-5ad391006e08",
"title": "Generic Message",
"submitter": "",
"authors": "",
"data": {
"ifo": [
"H1"
],
"time": [
1400530600
],
"range": 154.6738606998418
},
"message_text": "",
"published": "2024-05-23T20:16:38.736355Z",
"message_parser": "",
"retracted": false,
"created": "2024-05-23T20:16:38.736376Z",
"modified": "2024-05-23T20:16:38.736385Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 9391,
"topic": "lvk-users.beccatest",
"uuid": "943e5aab-4f2b-4e86-96a0-044676f37490",
"title": "Generic Message",
"submitter": "",
"authors": "",
"data": {
"ifo": [
"L1"
],
"time": [
1400530600
],
"range": 165.10130060159202
},
"message_text": "",
"published": "2024-05-23T20:16:42.758446Z",
"message_parser": "",
"retracted": false,
"created": "2024-05-23T20:16:42.758476Z",
"modified": "2024-05-23T20:16:42.758484Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 9392,
"topic": "lvk-users.beccatest",
"uuid": "402fcd47-64c7-4193-8e96-2598a43cea34",
"title": "Generic Message",
"submitter": "",
"authors": "",
"data": {
"ifo": [
"V1"
],
"time": [
1400530600
],
"range": 49.68628146745138
},
"message_text": "",
"published": "2024-05-23T20:16:46.782801Z",
"message_parser": "",
"retracted": false,
"created": "2024-05-23T20:16:46.782822Z",
"modified": "2024-05-23T20:16:46.782831Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 3082,
"topic": "gcn.circular",
"uuid": "879ff0d8-9705-4213-9fda-217466997a44",
"title": "LIGO/Virgo/KAGRA S230917af: MAXI/GSC observations",
"submitter": "Hop gcn.circular",
"authors": "Motoko Serino at Aoyama Gakuin U. <serino@phys.aoyama.ac.jp>",
"data": {
"date": "23/09/18 02:47:02 GMT",
"from": "Motoko Serino at Aoyama Gakuin U. <serino@phys.aoyama.ac.jp>",
"title": "GCN CIRCULAR",
"number": "34723",
"subject": "LIGO/Virgo/KAGRA S230917af: MAXI/GSC observations"
},
"message_text": "H. Negoro, M. Nakajima (Nihon U.),\nT. Mihara, N. Kawai (RIKEN),\nS. Sugita, M. Serino, H. Hiramatsu, H. Nishikawa, Y. Kondo (AGU),\nY. Kawakubo (LSU)\nreport on behalf of the MAXI team:\n\nWe examined MAXI/GSC all-sky X-ray images (2-20 keV)\nafter compact binary merger candidate S230917af at 2023-09-17 10:04:17 UTC .\n\nAt the trigger time of S230917af, the high-voltage of MAXI/GSC was on,\nbut the FOV was out of the 90% credible region of the cwb skymap.\nThe first one-orbit (92 min) scan observation with GSC after the event covered 100%\nof the 90% credible region of the cwb skymap from 10:41:56 to 10:53:01 UTC (T0+2259 to T0+2924 sec).\n\nThere was a low significance burst-like X-ray event at\n(R.A., Dec) = (333.784 deg, 39.435 deg) = (22 15 08, +39 26 06) (J2000)\nwith a statistical 90% C.L. error region of ~0.6 deg.\nThere is an additional systematic uncertainty of 0.1 deg (90% containment radius).\nThe sources region was observed around 10:50:13 UTC.\nThe X-ray flux averaged over the scan was 48 +- 13 mCrab\n(4.0-10.0keV, 1 sigma error).\n\nIf you require information about X-ray flux by MAXI/GSC at specific coordinates,\nplease contact the submitter of this circular by email.\n\n\n\nView this GCN Circular online at https://gcn.nasa.gov/circulars/34723.\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjk1MDA1MjI3LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.JSOai4dvHQcFbZxXrZpUXJljxmPHXun85fYc2GT2Ov4\n\n",
"published": "2023-09-18T02:47:18.094572Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-09-18T02:47:18.094597Z",
"modified": "2023-09-18T02:47:18.104443Z",
"nonlocalizedevents": [
{
"event_id": "S230917a"
}
],
"targets": []
},
{
"id": 3083,
"topic": "gcn.circular",
"uuid": "59c369e7-73c2-48e8-92b6-d164babae877",
"title": "Swift Triggers 1192480, 1192481, 1192482 and 1192483 are not astrophysical events",
"submitter": "Hop gcn.circular",
"authors": "K.L. Page at U Leicester <klp5@leicester.ac.uk>",
"data": {
"date": "23/09/18 02:49:03 GMT",
"from": "K.L. Page at U Leicester <klp5@leicester.ac.uk>",
"title": "GCN CIRCULAR",
"number": "34724",
"subject": "Swift Triggers 1192480, 1192481, 1192482 and 1192483 are not astrophysical events"
},
"message_text": "\nC. Gronwall (PSU) and K. L. Page (U Leicester) report on behalf of the\nNeil Gehrels Swift Observatory Team:\n\nSwift triggers 1192480, 1192481, 1192482 and 1192483, on 2023-09-18 between 02:15:52 and\n02:40:32 UTC, are not an astrophysical events. They were caused by misidentifcation of various sources when the star trackers had lost lock.\n\nFor the near future, please verify that the Swift GCN notices do not have the comment\n\nCOMMENTS: This trigger occured while the StarTracker had lost lock, so it is possibly bogus.\n\nGCN 34709 lists sources which BAT currently sees, so notices with coordinates\nnear these locations should be treated as suspect.\n\n\n\n\nView this GCN Circular online at https://gcn.nasa.gov/circulars/34724.\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjk1MDA1MzQ2LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.0OOededBGzxO3kljf1W66WF-0VOC6bVvh4_oHUbM4Xo\n\n",
"published": "2023-09-18T02:49:17.261279Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-09-18T02:49:17.261300Z",
"modified": "2023-09-18T02:49:17.267385Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 3321,
"topic": "igwn.gwalert",
"uuid": "5e1b4306-9312-4784-b19c-5c7bd91c7bc2",
"title": "S230923bq - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230923bq/files/cwb.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230923bq/view/"
},
"event": {
"far": 1.13338e-05,
"time": "2023-09-23T21:50:29.375Z",
"group": "Burst",
"search": "AllSky",
"area_50": 2072.425833437674,
"area_90": 6308.550684229736,
"duration": 0.103895,
"pipeline": "CWB",
"properties": {},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "fae123a225fafab951cf490e38b2d7e2",
"classification": {},
"skymap_version": 0,
"central_frequency": 20.436661
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-09-23T21:57:19Z",
"superevent_id": "S230923bq",
"external_coinc": null
},
"message_text": "",
"published": "2023-09-23T21:57:21.238223Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-09-23T21:57:21.238269Z",
"modified": "2023-09-23T21:57:21.244981Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 3322,
"topic": "igwn.gwalert",
"uuid": "57ff3745-8b70-4fe0-82c1-632c9501984b",
"title": "S230923bt - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230923bt/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230923bt/view/"
},
"event": {
"far": 1.016509e-05,
"time": "2023-09-23T22:07:25.304Z",
"group": "CBC",
"search": "AllSky",
"area_50": 725.5693562850539,
"area_90": 2577.470784443494,
"duration": null,
"pipeline": "MBTA",
"properties": {
"HasNS": 1.0,
"HasMassGap": 0.0,
"HasRemnant": 1.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "e5eee9d541eacf44e26acf4a3589e5a5",
"classification": {
"BBH": 0.0,
"BNS": 0.001204987,
"NSBH": 2.003e-06,
"Terrestrial": 0.99879301
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-09-23T22:07:57Z",
"superevent_id": "S230923bt",
"external_coinc": null
},
"message_text": "",
"published": "2023-09-23T22:07:59.356560Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-09-23T22:07:59.356620Z",
"modified": "2023-09-23T22:07:59.363546Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 3323,
"topic": "igwn.gwalert",
"uuid": "8698be4a-fea1-474e-917f-c62a5f28a95f",
"title": "S230923bt - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230923bt/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230923bt/view/"
},
"event": {
"far": 1.016509e-05,
"time": "2023-09-23T22:07:25.304Z",
"group": "CBC",
"search": "AllSky",
"area_50": 725.5693562850539,
"area_90": 2577.470784443494,
"duration": null,
"pipeline": "MBTA",
"properties": {
"HasNS": 1.0,
"HasMassGap": 0.0,
"HasRemnant": 1.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "e5eee9d541eacf44e26acf4a3589e5a5",
"classification": {
"BBH": 0.0,
"BNS": 0.001204987,
"NSBH": 2.003e-06,
"Terrestrial": 0.99879301
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-09-23T22:12:31Z",
"superevent_id": "S230923bt",
"external_coinc": null
},
"message_text": "",
"published": "2023-09-23T22:12:31.956810Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-09-23T22:12:31.956837Z",
"modified": "2023-09-23T22:12:31.962952Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 4264,
"topic": "igwn.gwalert",
"uuid": "fe220b18-148a-45e0-8c50-03d34766d697",
"title": "S231029n - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S231029n/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S231029n/view/"
},
"event": {
"far": 2.159373980248347e-05,
"time": "2023-10-29T07:44:33.518Z",
"group": "CBC",
"search": "AllSky",
"area_50": 1820.8475632856268,
"area_90": 6798.278526210453,
"duration": null,
"pipeline": "spiir",
"properties": {
"HasNS": 0.4540836318961177,
"HasMassGap": 0.07518970938401677,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "ef9e4e46b435e9b683efa5965a980573",
"classification": {
"BBH": 0.08147370332929382,
"BNS": 0.0,
"NSBH": 0.024627440145662323,
"Terrestrial": 0.8938988565250439
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-10-29T07:49:31Z",
"superevent_id": "S231029n",
"external_coinc": null
},
"message_text": "",
"published": "2023-10-31T23:28:25.792676Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-10-31T23:28:25.792758Z",
"modified": "2023-10-31T23:28:25.797811Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 3086,
"topic": "igwn.gwalert",
"uuid": "be8fed00-de3d-46c0-bd2b-e28b0cc770dd",
"title": "S230918ae - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230918ae/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230918ae/view/"
},
"event": {
"far": 6.683096e-06,
"time": "2023-09-18T08:56:09.489Z",
"group": "CBC",
"search": "AllSky",
"area_50": 421.7450567186114,
"area_90": 1739.016432877538,
"duration": null,
"pipeline": "MBTA",
"properties": {
"HasNS": 1.0,
"HasMassGap": 0.5241000027134658,
"HasRemnant": 0.135963633904799
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "40ea17ac081bba4664a68f8604e22733",
"classification": {
"BBH": 0.0,
"BNS": 0.000307366,
"NSBH": 0.002672942,
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"uuid": "b726944a-9ef9-4d64-ab71-5cc3cc5862ca",
"title": "S230918ah - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
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"gracedb": "https://gracedb.ligo.org/superevents/S230918ah/view/"
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"time": "2023-09-18T09:22:13.219Z",
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"time_created": "2023-09-18T09:23:11Z",
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"published": "2023-09-18T09:23:12.194139Z",
"message_parser": "IGWN Alert Avro Parser v1",
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{
"id": 3088,
"topic": "igwn.gwalert",
"uuid": "13729c7c-89d5-431f-be77-8d6c77d7618d",
"title": "S230918ah - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
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"time_created": "2023-09-18T09:27:44Z",
"superevent_id": "S230918ah",
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"published": "2023-09-18T09:27:44.740557Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-09-18T09:27:44.740585Z",
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{
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"topic": "igwn.gwalert",
"uuid": "d5a4d1a0-e148-4316-9887-0966e012033a",
"title": "S231025c - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
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"gracedb": "https://gracedb.ligo.org/superevents/S231025c/view/"
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"event": {
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"time": "2023-10-25T03:29:30.125Z",
"group": "CBC",
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"area_90": 11548.680558105658,
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"sequence_num": 1,
"time_created": "2023-10-25T03:29:55Z",
"superevent_id": "S231025c",
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"published": "2023-10-25T03:30:01.014897Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-10-25T03:30:01.014935Z",
"modified": "2023-10-25T03:30:01.027626Z",
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{
"id": 3093,
"topic": "gcn.circular",
"uuid": "af0eafee-3b3b-4157-abfe-9db85ebf7b97",
"title": "LIGO/Virgo/KAGRA S230918aq: Retraction of GW compact binary merger candidate",
"submitter": "Hop gcn.circular",
"authors": "Michela Mapelli <michela.mapelli@inaf.it>",
"data": {
"date": "23/09/18 12:09:47 GMT",
"from": "Michela Mapelli <michela.mapelli@inaf.it>",
"title": "GCN CIRCULAR",
"number": "34728",
"subject": "LIGO/Virgo/KAGRA S230918aq: Retraction of GW compact binary merger candidate"
},
"message_text": "The LIGO Scientific Collaboration, the Virgo Collaboration, and the KAGRA Collaboration report:\n\nThe trigger S230918aq is no longer considered to be a candidate of interest. This candidate was initially identified by one or more early-warning analyses by matching partial signal templates to the data. Analysis of additional data up to the putative merger time, with full signal templates, did not make a significant detection, indicating that the initial candidate was likely due to transient noise.\n\n\n\nView this GCN Circular online at https://gcn.nasa.gov/circulars/34728.\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjk1MDM4OTkzLCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.zujDdQNgEfTZUxYXL0ZjMADyShxsvfrMQhf-hX9hQdM\n\n",
"published": "2023-09-18T12:10:02.113323Z",
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"retracted": false,
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"modified": "2023-09-18T12:10:02.119496Z",
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{
"id": 9397,
"topic": "lvk-users.beccatest",
"uuid": "35fc9efe-c775-4d01-bfd8-b55543b87866",
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"submitter": "",
"authors": "",
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"range": 164.94966756906462
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"published": "2024-05-23T20:19:59.388961Z",
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"created": "2024-05-23T20:19:59.388981Z",
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"topic": "igwn.gwalert",
"uuid": "78bf2c32-9f51-4fd4-ba18-5eb1191c5edf",
"title": "S230918bq - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
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"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-09-18T22:22:10.493490Z",
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{
"id": 3100,
"topic": "igwn.gwalert",
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"title": "S230918bq - PRELIMINARY",
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"authors": "LVK",
"data": {
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"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-09-18T22:26:43Z",
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"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-09-18T22:26:44.912080Z",
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{
"id": 3089,
"topic": "gcn.circular",
"uuid": "9db32c5b-f499-4c75-a532-508cad5d0f99",
"title": "GRB 230918A: 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": "23/09/18 10:03:09 GMT",
"from": "Fermi GBM Team at MSFC/Fermi-GBM <do_not_reply@GIOC.nsstc.nasa.gov>",
"title": "GCN CIRCULAR",
"number": "34726",
"subject": "GRB 230918A: Fermi GBM Final Real-time Localization"
},
"message_text": "The Fermi GBM team reports the detection of a likely SHORT GRB\n\nAt 09:52:36 UT on 18 Sep 2023, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 230918A (trigger 716723561.504536 / 230918412).\n\nThe on-ground calculated location, using the Fermi GBM trigger data, is RA = 222.5, Dec = -11.6 (J2000 degrees, equivalent to J2000 14h 50m, -11d 35'), with a statistical uncertainty of 17.1 degrees.\n\nThe angle from the Fermi LAT boresight is 63.0 degrees.\n\nThe skymap can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn230918412/quicklook/glg_skymap_all_bn230918412.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/bn230918412/quicklook/glg_healpix_all_bn230918412.fit\n\nThe GBM light curve can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn230918412/quicklook/glg_lc_medres34_bn230918412.gif\n\n\n\n\nView this GCN Circular online at https://gcn.nasa.gov/circulars/34726.\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjk1MDMxMzk0LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.BsGdDB_fu8S90uEmJknQnFe0jbmcO54lLTdxi7QxRVw\n\n",
"published": "2023-09-18T10:03:25.848987Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-09-18T10:03:25.849021Z",
"modified": "2023-09-18T10:03:25.857956Z",
"nonlocalizedevents": [],
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{
"id": 3090,
"topic": "igwn.gwalert",
"uuid": "1fbadaac-fa05-4bb9-8bed-c7fe5be9db2e",
"title": "S230918aq - EARLYWARNING",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
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"time_created": "2023-09-18T11:19:36Z",
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"published": "2023-09-18T11:19:37.655794Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-09-18T11:19:37.655819Z",
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},
{
"id": 3091,
"topic": "gcn.circular",
"uuid": "416957d5-3f78-4489-ac69-8df2e9707edc",
"title": "GRB 230812B: Radio observations with the uGMRT",
"submitter": "Hop gcn.circular",
"authors": "S. Mohnani at Indian Institute Of Technology Indore <phd2201121011@iiti.ac.in>",
"data": {
"date": "23/09/18 11:41:40 GMT",
"from": "S. Mohnani at Indian Institute Of Technology Indore <phd2201121011@iiti.ac.in>",
"title": "GCN CIRCULAR",
"number": "34727",
"subject": "GRB 230812B: Radio observations with the uGMRT"
},
"message_text": "S. Mohnani (IIT Indore), S. Chatterjee (IIT Indore), B. Banerjee (GSSI), A. Shukla (IIT Indore), A. Datta (IIT Indore), G. Oganesyan (GSSI), S. Agarwal (IIT Indore), M. Branchesi (GSSI), K.K Yadav (ApSD BARC), V. Chitnis (TIFR), G.C. Anupama (IIA), P. Tiwari (GSSI), S. Mangla (IIT Indore)\n\nAt 11:30:00 UT on 2023 September 17 (35.92 days post-burst) upgraded Giant Meterwave Radio Telescope (uGMRT) observed the field of GRB 230812B (Fermi GBM team, GCN 34386) at a central frequency of 1.26 GHz for about 2 hours.\n\nThe standard 3C286 was used as a bandpass and flux density calibrator, while 1635+381 was used as a phase calibrator.\n\nBased on preliminary analysis, we do not detect any source consistent with the location of the afterglow (A.P. Beardmore et al., GCN 34400; S. Giarratana et al., GCN 34552). The 3-sigma upper limit achieved is ~ 43 micro Jy.\n\nWe would like to thank the staff of the uGMRT for approving, executing,\nand processing the observations through the DDT proposal (ddtC304; PI- Shraddha Mohnani).\n\nThe uGMRT is operated by the National Center for Radio Astrophysics of the Tata Institute of Fundamental Research.\n\n\n\nView this GCN Circular online at https://gcn.nasa.gov/circulars/34727.\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjk1MDM3MzA1LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.neAW8cOe9pNDJikWRpqQLGb4n70qKWk2ye4vUTXLzeI\n\n",
"published": "2023-09-18T11:41:55.264438Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-09-18T11:41:55.264460Z",
"modified": "2023-09-18T11:41:55.271247Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 3092,
"topic": "igwn.gwalert",
"uuid": "79745dca-2877-48b1-a492-fb6fb78784f4",
"title": "S230918aq - RETRACTION",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
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"event": null,
"alert_type": "RETRACTION",
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"time_created": "2023-09-18T11:52:55Z",
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"published": "2023-09-18T11:52:56.486832Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-09-18T11:52:56.486856Z",
"modified": "2023-09-18T11:52:56.492940Z",
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},
{
"id": 4121,
"topic": "igwn.gwalert",
"uuid": "afef2007-4729-4af8-87ba-d2f494b61a79",
"title": "S231025c - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
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"sequence_num": 2,
"time_created": "2023-10-25T03:34:29Z",
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},
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"published": "2023-10-25T03:34:31.158431Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-10-25T03:34:31.158456Z",
"modified": "2023-10-25T03:34:31.164402Z",
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{
"id": 4122,
"topic": "gcn.circular",
"uuid": "a9a569fe-3c24-4a9d-8196-de425725659c",
"title": "LIGO/Virgo/KAGRA S231025a: two counterpart neutrino candidates from IceCube neutrino searches",
"submitter": "Hop gcn.circular",
"authors": "acz2122@columbia.edu",
"data": {
"date": "23/10/25 03:45:25 GMT",
"from": "acz2122@columbia.edu",
"urls": {
"gcn": "https://gcn.nasa.gov/circulars/34877"
},
"title": "GCN CIRCULAR",
"number": "34877",
"subject": "LIGO/Virgo/KAGRA S231025a: two counterpart neutrino candidates from IceCube neutrino searches"
},
"message_text": "The IceCube Collaboration (http://icecube.wisc.edu/) reports:\n\nA search for track-like muon neutrino events detected by IceCube consistent with the sky\nlocalization of the low-significance gravitational wave candidate S231025a in a time range of 1000 seconds\ncentered on the alert event time (2023-10-25 03:03:04 UTC to 2023-10-25 03:19:44 UTC)\nhas been performed [1,2]. During this time period IceCube was collecting good quality data.\nOne hypothesis test was conducted for this low-significance gravitational wave event. The\nsearch uses a Bayesian approach to quantify the joint GW + neutrino event significance, which\nassumes a binary merger scenario and accounts for known astrophysical priors, such as GW source\ndistance, in the significance estimate [3].\n\nTwo track-like events are found in spatial and temporal coincidence with the gravitational-wave\ncandidate S231025a calculated from the map circulated by LVK as S231025a-2-Preliminary. This\nrepresents an overall pre-trial p-value of 0.0010 for the Bayesian search.\n\nThe reported p-value here does not account for any trials correction (multiple hypotheses testing). The false alarm rate of these coincidences can be obtained by multiplying the p-values with their corresponding GW trigger rates. Further details are available at https://gcn.nasa.gov/missions/icecube and at https://roc.icecube.wisc.edu/public/LvkNuTrackSearch.\n\n\nProperties of the coincident event(s) are shown below.\n\ndt(s)\tRA(deg)\t\tDec(deg)\tAngular uncertainty(deg) p-value(generic transient) p-value(Bayesian)\n-----------------------------------------------------------------------------------------------------\n-331.09 226.87 -4.88 1.81 not applicable\t\t0.0253\n+284.41 240.49 -3.37 2.06 not applicable\t\t0.0011\n\n\n\nwhere:\ndt = Time of track event minus time of GW trigger (sec)\nAngular uncertainty = Angular uncertainty of track event: the radius of a circle\n \trepresenting 90% CL containment by area.\np-value = the p-value for this specific track event from each search.\n\nThe IceCube Neutrino Observatory is a cubic-kilometer neutrino detector operating at the\ngeographic South Pole, Antarctica. The IceCube realtime alert point of contact can be\nreached at roc@icecube.wisc.edu\n\n\n[1] M. G. Aartsen et al 2020 ApJL 898 L10\n[2] Abbasi et al. Astrophys.J. 944 (2023) 1, 80\n[3] I. Bartos et al. 2019 Phys. Rev. D 100, 083017\n\n\nView this GCN Circular online at https://gcn.nasa.gov/circulars/34877.",
"published": "2023-10-25T03:45:35.160920Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-10-25T03:45:35.160955Z",
"modified": "2023-10-25T03:45:35.170582Z",
"nonlocalizedevents": [
{
"event_id": "S231025a"
}
],
"targets": []
},
{
"id": 9398,
"topic": "lvk-users.beccatest",
"uuid": "ad4ad16f-c497-4599-9847-f0a7b1c45113",
"title": "Generic Message",
"submitter": "",
"authors": "",
"data": {
"ifo": [
"V1"
],
"time": [
1400530800
],
"range": 49.369067793296125
},
"message_text": "",
"published": "2024-05-23T20:20:08.415592Z",
"message_parser": "",
"retracted": false,
"created": "2024-05-23T20:20:08.415612Z",
"modified": "2024-05-23T20:20:08.415620Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 9399,
"topic": "lvk-users.beccatest",
"uuid": "7d0ef23a-60c6-41cf-9b65-62ed158c0ddb",
"title": "Generic Message",
"submitter": "",
"authors": "",
"data": {
"ifo": [
"H1"
],
"time": [
1400530900
],
"range": 154.226945783877
},
"message_text": "",
"published": "2024-05-23T20:21:38.931547Z",
"message_parser": "",
"retracted": false,
"created": "2024-05-23T20:21:38.931567Z",
"modified": "2024-05-23T20:21:38.931576Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 9400,
"topic": "lvk-users.beccatest",
"uuid": "3b1ffd20-a461-4059-9a92-182295ac6549",
"title": "Generic Message",
"submitter": "",
"authors": "",
"data": {
"ifo": [
"L1"
],
"time": [
1400530900
],
"range": 165.01813237661247
},
"message_text": "",
"published": "2024-05-23T20:21:39.945621Z",
"message_parser": "",
"retracted": false,
"created": "2024-05-23T20:21:39.945708Z",
"modified": "2024-05-23T20:21:39.945753Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 9401,
"topic": "lvk-users.beccatest",
"uuid": "1178af9d-5453-496b-a0e9-ef808f8cd088",
"title": "Generic Message",
"submitter": "",
"authors": "",
"data": {
"ifo": [
"V1"
],
"time": [
1400530900
],
"range": 49.228921079146915
},
"message_text": "",
"published": "2024-05-23T20:21:46.974652Z",
"message_parser": "",
"retracted": false,
"created": "2024-05-23T20:21:46.974700Z",
"modified": "2024-05-23T20:21:46.974714Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 3094,
"topic": "gcn.circular",
"uuid": "b3bf63c6-3ba0-434f-95cd-ae556eab23e2",
"title": "GRB 230915A: Fermi GBM observation",
"submitter": "Hop gcn.circular",
"authors": "rachel.hamburg@ijclab.in2p3.fr",
"data": {
"date": "23/09/18 14:43:46 GMT",
"from": "rachel.hamburg@ijclab.in2p3.fr",
"title": "GCN CIRCULAR",
"number": "34729",
"subject": "GRB 230915A: Fermi GBM observation"
},
"message_text": "R. Hamburg (CNRS/IJCLab) and C. Meegan (UAH)\nreport on behalf of the Fermi GBM Team:\n\n\"At 05:39:29.46 UT on 15 September 2023, the Fermi Gamma-Ray Burst Monitor (GBM)\ntriggered and located GRB 230915A (trigger 716449174 / 230915236),\nwhich was also detected by Swift/BAT-GUANO (Tohuvavohu et al. 2023, GCN 34714)\n\nThe angle from the Fermi LAT boresight at the GBM trigger time is 56 degrees.\n\nThe GBM light curve shows a multi-peaked lightcurve\nwith a duration (T90) of about 42 s (50-300 keV).\nThe time-averaged spectrum from T0-9.73 s to T0+18.94 s is\nbest fit by a power law function with an exponential\nhigh-energy cutoff. The power law index is -1.13 +/- 0.06 and\nthe cutoff energy, parameterized as Epeak, is 177 +/- 19 keV.\nA Band function fits the spectrum equally well with\nEpeak = 141 +/- 23 keV, alpha = -1.03 +/- 0.10 and beta = -2.18 +/- 0.20.\n\nThe event fluence (10-1000 keV) in this time interval is\n(5.60 +/- 0.29)E-06 erg/cm^2. The 1-sec peak photon flux measured\nstarting from T0+4.54 s in the 10-1000 keV band\nis 5.3 +/- 0.2 ph/s/cm^2.\n\nThe spectral analysis results presented above are preliminary;\nfinal results will be published in the GBM GRB Catalog:\nhttps://heasarc.gsfc.nasa.gov/W3Browse/fermi/fermigbrst.html\n\nFor Fermi GBM data and info, please visit the official Fermi GBM Support Page:\nhttps://fermi.gsfc.nasa.gov/ssc/data/access/gbm/\"\n\n\n\nView this GCN Circular online at https://gcn.nasa.gov/circulars/34729.\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjk1MDQ4MjMxLCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.TaBI3tRlwskbjYK8Hvme0kBoqlEEi0xSTqoxQabjR1Y\n\n",
"published": "2023-09-18T14:44:00.869775Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-09-18T14:44:00.869801Z",
"modified": "2023-09-18T14:44:00.878013Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 3095,
"topic": "gcn.circular",
"uuid": "bfd8fc93-e75f-4f83-bc6d-2b4cb482ebde",
"title": "ZTF and SEDM Observations of the Candidate Optical Afterglow AT 2023sva",
"submitter": "Hop gcn.circular",
"authors": "jlv93@cornell.edu",
"data": {
"date": "23/09/18 17:55:30 GMT",
"from": "jlv93@cornell.edu",
"title": "GCN CIRCULAR",
"number": "34730",
"subject": "ZTF and SEDM Observations of the Candidate Optical Afterglow AT 2023sva"
},
"message_text": "Jada L. Vail, Maggie L. Li (Cornell), Jacob Wise (LJMU), D. A. Perley (LJMU), Anna Y. Q. Ho (Cornell), Eric Burns (LSU), Michael Coughlin (UMN) report:\n\nWe report the identification of a fast-evolving red transient by the Zwicky Transient Facility (ZTF) and Spectral Energy Distribution Machine (SEDM). AT 2023sva is located at the position (J2000) of:\n\nRA = 00:56:59.19 (14.24662 deg)\nDec = +80:08:44.12 (80.14559 deg)\n\nIt was first detected by ZTF on 2023-09-17 09:38:31 UT at r = 17.71 +/- 0.05 mag (MJD`204.40175) and g = 18.49 +/- 0.06 mag (MJD`204.44580) as part of the public all-sky survey. ZTF also obtained a non-detection ~2 days prior at r > 20.91 mag (MJD`202.24319), indicating a fast rise rate of >1.5 mag/day in r. The transient was detected in follow-up Spectral Energy Distribution Machine (SEDM) observations at r = 20.22 +/- 0.08 mag (MJD`205.48761) and g = 20.73 +/- 0.10 mag (MJD`205.48597), implying red colors and rapid fading (~2.3 mag/day fade in r).\n\nAT2023sva was also detected by ATLAS (ATLAS23srq) at MJD 60204.43499 and saved to the TNS (Tonry et al. 2023, TNS Report No. 188327). The last ATLAS non-detection was at MJD 60202.48470. The Galactic latitude of AT 2023sva is 17.27 degrees, and the Galactic reddening toward the direction of AT 2023sva is: E(g-r) = 0.249 from Schlafly & Finkbeiner (2011).\n\nThe fast rise, fast decay, red color, and lack of an archival optical counterpart make AT 2023sva a strong candidate afterglow. We identify the temporally and spatially coincident Fermi-GBM trigger bn230916144 / 716527670, initially classified as a GRB with 64% probability at position (J2000) of RA, Dec = 00:26:52.8, +87:43:12. The localization error radius is 21.44 deg. The time of the GBM trigger was 2023-09-16 03:27:46 UT (MJD`203.14428), 1.3 days prior to the first ZTF detection of AT 2023sva. If the Fermi-GBM trigger is indeed a GRB then we suggest this as the prompt counterpart to AT 2023sva. If the trigger is of another origin, then no identified prompt signal has been reported thus far.\n\nWe encourage spectroscopic follow-up observations.\n\nZTF is supported by the National Science Foundation under Grant No. AST-2034437 and a collaboration including Caltech, IPAC, the Weizmann Institute for Science, the Oskar Klein Center at Stockholm University, the University of Maryland, Deutsches Elektronen-Synchrotron and Humboldt University, the TANGO Consortium of Taiwan, the University of Wisconsin at Milwaukee, Trinity College Dublin, Lawrence Livermore National Laboratories, and IN2P3, France. Operations are conducted by COO, IPAC, and UW.\n\nSED Machine is based upon work supported by the National Science Foundation under Grant No. 1106171.\n\n\n\nView this GCN Circular online at https://gcn.nasa.gov/circulars/34730.\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjk1MDU5NzM1LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.98s7RJqmgWbIYNyObMphFX4pU_tlfHjVKam0auvuIM0\n\n",
"published": "2023-09-18T17:55:45.844108Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-09-18T17:55:45.844141Z",
"modified": "2023-09-18T17:55:45.851838Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 3096,
"topic": "gcn.circular",
"uuid": "a03b0a28-0f82-482a-9d12-1d50f995545f",
"title": "AT 2023sva: NOT observations of the ZTF candidate afterglow",
"submitter": "Hop gcn.circular",
"authors": "Daniele B. Malesani at IMAPP / Radboud University <d.malesani@astro.ru.nl>",
"data": {
"date": "23/09/18 21:29:35 GMT",
"from": "Daniele B. Malesani at IMAPP / Radboud University <d.malesani@astro.ru.nl>",
"title": "GCN CIRCULAR",
"number": "34731",
"subject": "AT 2023sva: NOT observations of the ZTF candidate afterglow"
},
"message_text": "D. B. Malesani (Radboud Univ. and DAWN/NBI) and Maria B. Stone (Turku Univ.) report on behalf of a larger collaboration:\n\nWe observed the transient AT 2023sva (Vail et al., GCN 34730; Tonry et al. 2023, TNS report 188327), a candidate afterglow of the Fermi-GBM trigger 716527670 from 2023 September 16, using the Nordic Optical Telescope (NOT) equipped with the ALFOSC camera.\n\nObservations started on 2023 Sep 18.84 (2.70 days after the GBM trigger), in twilight, at a large airmass, and consisted in a single 300-s exposure in each of the SDSS r and g filters.\n\nIn our image, the transient is clearly detected with a magnitude r = 20.7 +- 0.1 AB, calibrated against nearby stars from the Pan-STARRS catalog.\n\n\nView this GCN Circular online at https://gcn.nasa.gov/circulars/34731.\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjk1MDcyNTgxLCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.20jK1YuzwE35PLx6ooJr9UuOzlo4lduOq3Cpasd0mOA\n\n",
"published": "2023-09-18T21:29:56.457288Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-09-18T21:29:56.457309Z",
"modified": "2023-09-18T21:29:56.463430Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 3097,
"topic": "gcn.circular",
"uuid": "c2dd6eef-8f1d-4257-b39d-610b4f886660",
"title": "GRB 230916B: Glowbug gamma-ray detection",
"submitter": "Hop gcn.circular",
"authors": "matthew.kerr@gmail.com",
"data": {
"date": "23/09/18 22:19:51 GMT",
"from": "matthew.kerr@gmail.com",
"title": "GCN CIRCULAR",
"number": "34732",
"subject": "GRB 230916B: Glowbug gamma-ray detection"
},
"message_text": "M. Kerr, C.C. Cheung, J. E. Grove, R. Woolf (NRL), A. Goldstein (USRA), C.A. Wilson-Hodge (MSFC), and M.S. Briggs (UAH) report:\n\nThe Glowbug gamma-ray telescope [1,2], operating on the International Space Station, reports the detection of GRB 230916B, which was also detected by Fermi/GBM (trigger 716572242).\n\nUsing an adaptive window with a resolution of 32-ms, the burst onset is determined to be 2023-09-16 15:50:37.040 with a duration of 14.3 s and a total significance of about 32.9 sigma.\n\nUsing a standard power-law function with an exponential high-energy cutoff [3] to model the emission over this duration results in a photon index dN/dE~E^x of x=3.3 and a cutoff energy (\"Epeak\") of 94 keV. The modeled 10-10000 keV fluence is 1.0e-06 erg/cm^2.\n\nThe analysis results presented here are preliminary and use a response function that lacks a detailed characterization of the surrounding passive structure of the ISS.\n\nGlowbug is a NASA-funded technology demonstrator for sensitive, low-cost gamma-ray transient telescopes developed, built, and operated by the U.S. Naval Research Laboratory (NRL) with support from the University of Alabama in Huntsville, USRA, and NASA MSFC. It was launched on 2023 March 15 aboard the Department of Defense Space Test Programâs STP-H9 to the ISS. The detector comprises 12 large-area (15 cm x 15 cm) CsI:Tl panels covering the surface of a half cube, and two hexagonal (5-cm diameter, 10-cm length) CLLB scintillators, giving it a large field of view (instantaneous FoV ~2/3 sky) over a wide energy band of 50 keV to >2 MeV.\n\n[1] Grove, J.E. et al. 2020, Proc. Yamada Conf. LXXI, arXiv:2009.11959\n[2] Woolf, R.S. et al. 2022, Proc. SPIE, 12181, id. 121811O\n[3] Goldstein, A. et al. 2020, ApJ 895, 40, arXiv :1909.03006\n\nDistribution Statement A: Approved for public release. Distribution is unlimited.\n\n\nView this GCN Circular online at https://gcn.nasa.gov/circulars/34732.\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjk1MDc1NTk2LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.mKEzFIcyIVoYaC6JnsxI2wGoNfkSaZHOlLxmiPg9ILo\n\n",
"published": "2023-09-18T22:20:11.137803Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-09-18T22:20:11.137835Z",
"modified": "2023-09-18T22:20:11.145661Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 3098,
"topic": "gcn.circular",
"uuid": "07185aca-49a3-4d26-af2c-f678dd29675c",
"title": "GRB 230918A (short): Glowbug gamma-ray detection",
"submitter": "Hop gcn.circular",
"authors": "matthew.kerr@gmail.com",
"data": {
"date": "23/09/18 22:20:21 GMT",
"from": "matthew.kerr@gmail.com",
"title": "GCN CIRCULAR",
"number": "34733",
"subject": "GRB 230918A (short): Glowbug gamma-ray detection"
},
"message_text": "M. Kerr, C.C. Cheung, J. E. Grove, R. Woolf (NRL), A. Goldstein (USRA), C.A. Wilson-Hodge (MSFC), and M.S. Briggs (UAH) report:\n\nThe Glowbug gamma-ray telescope [1,2], operating on the International Space Station, reports the detection of the short GRB 230918A, which was also detected by Fermi/GBM (GCN 34726).\n\nUsing an adaptive window with a resolution of 32-ms, the burst onset is determined to be 2023-09-18 09:52:35.360 with a duration of 0.128 s and a total significance of about 12.9 sigma.\n\nUsing a standard power-law function with an exponential high-energy cutoff [3] to model the emission over this duration results in a photon index dN/dE~E^x of x=0.7 and a cutoff energy (\"Epeak\") of 417 keV. The modeled 10-10000 keV fluence is 1.7e-07 erg/cm^2.\n\nThe analysis results presented here are preliminary and use a response function that lacks a detailed characterization of the surrounding passive structure of the ISS.\n\nGlowbug is a NASA-funded technology demonstrator for sensitive, low-cost gamma-ray transient telescopes developed, built, and operated by the U.S. Naval Research Laboratory (NRL) with support from the University of Alabama in Huntsville, USRA, and NASA MSFC. It was launched on 2023 March 15 aboard the Department of Defense Space Test Programâs STP-H9 to the ISS. The detector comprises 12 large-area (15 cm x 15 cm) CsI:Tl panels covering the surface of a half cube, and two hexagonal (5-cm diameter, 10-cm length) CLLB scintillators, giving it a large field of view (instantaneous FoV ~2/3 sky) over a wide energy band of 50 keV to >2 MeV.\n\n[1] Grove, J.E. et al. 2020, Proc. Yamada Conf. LXXI, arXiv:2009.11959\n[2] Woolf, R.S. et al. 2022, Proc. SPIE, 12181, id. 121811O\n[3] Goldstein, A. et al. 2020, ApJ 895, 40, arXiv :1909.03006\n\nDistribution Statement A: Approved for public release. Distribution is unlimited.\n\n\nView this GCN Circular online at https://gcn.nasa.gov/circulars/34733.\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjk1MDc1NjIzLCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.gJD2YwW0sW71NqbmL3n1q1Gu-QC3_K2j3rGeFEoZwPM\n\n",
"published": "2023-09-18T22:20:27.173578Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-09-18T22:20:27.173598Z",
"modified": "2023-09-18T22:20:27.179776Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 4123,
"topic": "igwn.gwalert",
"uuid": "93378627-c8e1-42db-9d46-6e282df2c7ff",
"title": "S231025e - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S231025e/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S231025e/view/"
},
"event": {
"far": 2.027248410740867e-05,
"time": "2023-10-25T04:06:04.280Z",
"group": "CBC",
"search": "AllSky",
"area_50": 391.58294134383516,
"area_90": 1676.0694094867004,
"duration": null,
"pipeline": "spiir",
"properties": {
"HasNS": 1.0,
"HasMassGap": 0.35679266993958764,
"HasRemnant": 1.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "6046c1da6fec33d5332a03f97005bd39",
"classification": {
"BBH": 0.0,
"BNS": 0.027546917749842453,
"NSBH": 0.00835222600439437,
"Terrestrial": 0.9641008562457631
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-10-25T04:06:29Z",
"superevent_id": "S231025e",
"external_coinc": null
},
"message_text": "",
"published": "2023-10-25T04:06:31.880025Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-10-25T04:06:31.880051Z",
"modified": "2023-10-25T04:06:31.891700Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 9402,
"topic": "lvk-users.beccatest",
"uuid": "040e3f36-7f9e-4f52-8301-f3c88d9bd1d8",
"title": "Generic Message",
"submitter": "",
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"title": "GCN CIRCULAR",
"number": "34742",
"subject": "GRB 230919A: AstroSat CZTI detection"
},
"message_text": "P. K. Navaneeth (IUCAA), G. Waratkar (IITB), A. Vibhute (IUCAA), V. Bhalerao (IITB), D. Bhattacharya (Ashoka University/IUCAA), A. R. Rao (IUCAA/TIFR), and S. Vadawale (PRL) report on behalf of the AstroSat CZTI collaboration:\n\nAnalysis of AstroSat CZTI data with the CIFT framework (Sharma et al., 2021, JApA, 42, 73) showed the detection of GRB 230919A which was also detected by Fermi-GBM (Fermi GBM Team, GCN Circ. 34737).\n\nThe source was clearly detected in the CZT detectors in the 20-200 keV energy range. The light curve showed multiple peaks of emission with the strongest peak at 2023-09-19 16:58:23.95 UTC. The measured peak count rate associated with the burst is 1118 (+205, -166) counts/s above the background in the combined data of all quadrants, with a total of 921 (+115, -92) counts. The local mean background count rate was 406 (+10, -15) counts/s. Using cumulative rates, we measure a T90 of 1.58 (+1.38, -0.23) s. We caution that there are two 0.3 s readout dead time windows in CZTI data immediately after the detection of the burst. Hence, the T90 can be as large as 2.96 s for this GRB, with a lower limit of 1.35 s as estimated above by cumulative rates.\n\nThe source was also clearly detected in the CsI anticoincidence (Veto) detector in the 100-500 keV energy range. The light curve peaks at 2023-09-19 16:58:23.55 UTC. The measured peak count rate associated with the burst is 1196 (+82, -86) counts/s above the background in the combined data of all quadrants, with a total of 1796 (+193, -200) counts. The local mean background count rate was 1280 (+6, -6) counts/s. We measure a T90 of 2.1 (+1.2, -0.5) s from the cumulative Veto light curve. Note that this result is limited due to the 1 s native resolution of veto data.\n\nCZTI is built by a TIFR-led consortium of institutes across India, including VSSC, URSC, IUCAA, SAC, and PRL. The Indian Space Research Organisation funded, managed, and facilitated the project.\n\nCZTI GRB detections are reported regularly on the payload site at:\nhttp://astrosat.iucaa.in/czti/?q=grb\n\n\n\nView this GCN Circular online at https://gcn.nasa.gov/circulars/34742.\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjk1MjE3MzU0LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.sdre22ZP9U6EWFWY8bAGDGmbd2ubAQtl7zd7Z_lZFmQ\n\n",
"published": "2023-09-20T13:42:43.481263Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-09-20T13:42:43.481284Z",
"modified": "2023-09-20T13:42:43.490798Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 3158,
"topic": "igwn.gwalert",
"uuid": "44d10be0-d065-43f6-af6c-be36dfa0c05d",
"title": "S230919bj - UPDATE",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230919bj/files/bayestar.multiorder.fits,2",
"gracedb": "https://gracedb.ligo.org/superevents/S230919bj/view/"
},
"event": {
"far": 3.167545842243851e-10,
"time": "2023-09-19T21:57:12.026Z",
"group": "CBC",
"search": "AllSky",
"area_50": 165.28839225377422,
"area_90": 708.1540131469221,
"duration": null,
"pipeline": "pycbc",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.0,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": true,
"skymap_hash": "840cec4a73ce7a8c00719b95eccd3e12",
"classification": {
"BBH": 0.9996521656245423,
"BNS": 0.0,
"NSBH": 0.0,
"Terrestrial": 0.0003478343754577118
},
"skymap_version": 2,
"central_frequency": null
},
"alert_type": "UPDATE",
"sequence_num": 4,
"time_created": "2023-09-20T16:21:56Z",
"superevent_id": "S230919bj",
"external_coinc": null
},
"message_text": "",
"published": "2023-09-20T16:21:58.215689Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-09-20T16:21:58.215717Z",
"modified": "2023-09-20T16:21:58.223926Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 3159,
"topic": "gcn.circular",
"uuid": "b44e2605-84b6-4dcd-b97a-d678ef34ed52",
"title": "GRB 230812B : optical observations from MISTRAL at Observatoire de Haute-Provence",
"submitter": "Hop gcn.circular",
"authors": "christophe.adami@lam.fr",
"data": {
"date": "23/09/20 16:25:03 GMT",
"from": "christophe.adami@lam.fr",
"title": "GCN CIRCULAR",
"number": "34743",
"subject": "GRB 230812B : optical observations from MISTRAL at Observatoire de Haute-Provence"
},
"message_text": "C. Adami, P. Amram, S. Basa, K. Parra-Ramos (LAM), T. Adami (ENS Paris-Saclay), B. Schneider (MIT), A. Saccardi, S. D. Vergani, (GEPI, Obs. de Paris), S. Antier, A. de Ugarte Postigo (OCA), \nE. Le Floc'h, D. Götz, F. Schüssler, D. Turpin (CEA-Saclay), report, on behalf of a larger collaboration:\n\nWe observed the field of GRB 230812B (Fermi GBM Team GCN, 34386 and all subsequent GCNs) using the MISTRAL spectro-imager of Observatoire de Haute Provence (OHP) in imaging mode. We obtained \nduring the 2023 09 17 night 1x1200s exposure in the r'-band with a mid-epoch of 19:20 UT, during the 2023 09 18 night 1x600s and 2x900s exposures in the r'-band with a mid-epoch of 21:06 UT, and during the 2023 09 19\nnight 8x600sec and 1x700sec in the r'-band with a mid epoch of 19:58 UT.\n\nWe derive the following photometry, calibrated against the Pan-STARRS catalog, not corrected for the underlying galaxy, and not corrected for Galactic dust reddening:\n\n\n2023 09 17 19:20 UT r' = 22.36 +/- 0.16\n2023 09 18 21:06 UT r' = 22.37 +/- 0.14\n2023 09 19 19:58 UT r' = 22.45 +/- 0.10\n\n\nWe acknowledge the excellent support from Jerome Schmitt, Stephane Favard and Jean Balcaen (Observatoire de Haute Provence).\n\n\nView this GCN Circular online at https://gcn.nasa.gov/circulars/34743.\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjk1MjI3MTA4LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.onpTq6m4unAvb-MzbxnLLelX2tux2vxnh3e3bT1YdDg\n\n",
"published": "2023-09-20T16:25:24.702738Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-09-20T16:25:24.702758Z",
"modified": "2023-09-20T16:25:24.708849Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 4127,
"topic": "igwn.gwalert",
"uuid": "067cbf47-8557-48ed-8d64-0023a1e75254",
"title": "S231025k - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S231025k/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S231025k/view/"
},
"event": {
"far": 1.862234421423636e-05,
"time": "2023-10-25T04:56:33.166Z",
"group": "CBC",
"search": "AllSky",
"area_50": 836.9855876868362,
"area_90": 2532.1489276020907,
"duration": null,
"pipeline": "spiir",
"properties": {
"HasNS": 0.12280839430132091,
"HasMassGap": 0.07314718625976231,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "d4faa3e03fdfb6733ab81b6064c11384",
"classification": {
"BBH": 0.049819072802608805,
"BNS": 0.0,
"NSBH": 0.024755801091014287,
"Terrestrial": 0.925425126106377
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-10-25T04:56:59Z",
"superevent_id": "S231025k",
"external_coinc": null
},
"message_text": "",
"published": "2023-10-25T04:57:13.015035Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-10-25T04:57:13.015068Z",
"modified": "2023-10-25T04:57:13.021176Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 6723,
"topic": "igwn.gwalert",
"uuid": "08c52e35-01ef-49db-88cb-f6f33cf70d52",
"title": "S240420ap - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S240420ap/files/bayestar.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S240420ap/view/"
},
"event": {
"far": 1.402169180879583e-05,
"time": "2024-04-20T04:21:37.440Z",
"group": "CBC",
"search": "AllSky",
"area_50": 176.72376816977635,
"area_90": 2729.382934226715,
"duration": null,
"pipeline": "gstlal",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.018157865123382366,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "1de080b19f9aa570badc0e45abbebc6d",
"classification": {
"BBH": 0.10024604498364667,
"BNS": 8.38735750328333e-18,
"NSBH": 6.650691966618892e-16,
"Terrestrial": 0.8997539550163527
},
"skymap_version": 0,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2024-04-20T04:24:36Z",
"superevent_id": "S240420ap",
"external_coinc": null
},
"message_text": "",
"published": "2024-04-20T04:24:36.766820Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2024-04-20T04:24:36.766835Z",
"modified": "2024-04-20T04:24:36.773378Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 9424,
"topic": "lvk-users.beccatest",
"uuid": "d5ef83fb-178e-494a-b04f-3742014af810",
"title": "Generic Message",
"submitter": "",
"authors": "",
"data": {
"ifo": [
"L1"
],
"time": [
1400531700
],
"range": 163.70313746964868
},
"message_text": "",
"published": "2024-05-23T20:35:00.156015Z",
"message_parser": "",
"retracted": false,
"created": "2024-05-23T20:35:00.156036Z",
"modified": "2024-05-23T20:35:00.156045Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 3162,
"topic": "igwn.gwalert",
"uuid": "cdc613bc-7901-4e42-8eef-44f691945547",
"title": "S230920al - UPDATE",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230920al/files/bayestar.multiorder.fits,2",
"gracedb": "https://gracedb.ligo.org/superevents/S230920al/view/"
},
"event": {
"far": 3.167545842243851e-10,
"time": "2023-09-20T07:11:24.729Z",
"group": "CBC",
"search": "AllSky",
"area_50": 628.0014700292556,
"area_90": 2180.0652434360063,
"duration": null,
"pipeline": "pycbc",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.0,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": true,
"skymap_hash": "fc2c2f9e030131f5bc0df89ad05c6779",
"classification": {
"BBH": 0.9999894194286553,
"BNS": 0.0,
"NSBH": 0.0,
"Terrestrial": 1.058057134473156e-05
},
"skymap_version": 2,
"central_frequency": null
},
"alert_type": "UPDATE",
"sequence_num": 4,
"time_created": "2023-09-20T17:00:25Z",
"superevent_id": "S230920al",
"external_coinc": null
},
"message_text": "",
"published": "2023-09-20T17:00:26.560601Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-09-20T17:00:26.560630Z",
"modified": "2023-09-20T17:00:26.567204Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 3163,
"topic": "gcn.circular",
"uuid": "4dab55da-fd95-4d7b-aa63-96f371fea311",
"title": "LIGO/Virgo/KAGRA S230920al: Updated Sky localization",
"submitter": "Hop gcn.circular",
"authors": "naresh.adhikari@ligo.org",
"data": {
"date": "23/09/20 17:06:10 GMT",
"from": "naresh.adhikari@ligo.org",
"title": "GCN CIRCULAR",
"number": "34746",
"subject": "LIGO/Virgo/KAGRA S230920al: Updated Sky localization"
},
"message_text": "The LIGO Scientific Collaboration, the Virgo Collaboration, and the\nKAGRA Collaboration report:\n\nWe have conducted further analysis of the LIGO Hanford Observatory\n(H1) and LIGO Livingston Observatory (L1) data around the time of the\ncompact binary merger (CBC) candidate S230920al (GCN Circular 34741). Parameter estimation has been\nperformed 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/S230920al\n\nFor the Bilby.multiorder.fits,0 sky map, the 90% credible region is\n2180 deg2. Marginalized over the whole sky, the a posteriori\nluminosity distance estimate is 3139 +/- 1003 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\nView this GCN Circular online at https://gcn.nasa.gov/circulars/34746.\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjk1MjI5NTc2LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.T9VK-czcPkSQNlkzuGMeIKFdBcBpPdd4HLBYGP7yFaA\n\n",
"published": "2023-09-20T17:06:24.116456Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-09-20T17:06:24.116485Z",
"modified": "2023-09-20T17:06:24.123345Z",
"nonlocalizedevents": [
{
"event_id": "S230920a"
}
],
"targets": []
},
{
"id": 3164,
"topic": "gcn.circular",
"uuid": "84552984-df96-45b5-b0ed-a20b3d7976c8",
"title": "GRB 230919A: Swift/BAT-GUANO detection of a possibly short burst outside the coded FOV",
"submitter": "Hop gcn.circular",
"authors": "Jimmy DeLaunay at University of Alabama <delauj2@gmail.com>",
"data": {
"date": "23/09/20 17:51:55 GMT",
"from": "Jimmy DeLaunay at University of Alabama <delauj2@gmail.com>",
"title": "GCN CIRCULAR",
"number": "34747",
"subject": "GRB 230919A: Swift/BAT-GUANO detection of a possibly short burst outside the coded FOV"
},
"message_text": "James DeLaunay (U Alabama), Aaron Tohuvavohu (U Toronto), Samuele Ronchini (PSU), Gayathri Raman (PSU), Jamie A. Kennea (PSU), Tyler Parsotan (NASA GSFC) report:\n\nSwift/BAT did not localize GRB 230919A onboard (T0: 2023-09-19T16:58:23.86 UTC, Fermi trig 716835508, AstroSat CZTI GCN 34742)\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 90 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 BAT likelihood search, NITRATES (DeLaunay + Tohuvavohu 2022, ApJ, 941, 169), performed on the temporal window [T0-20 s, T0+20 s], detects the burst with a sqrt(TS) of 16.6 in a 1.5 s analysis time bin, starting at T0 - 0.2 s.\n\nNITRATES results are consistent with a burst coming from outside the FOV, with DeltaLLHOut of -0.6 and are consistent with Fermi GBM's localization (GCN 34737).\n\nSee Section 9.1 and Figures 10 and 17 in the NITRATES paper for brief descriptions and interpretation of sqrt(TS), DeltaLLHPeak, and DeltaLLHOut.\n\nGUANO is a fully autonomous, extremely low latency, spacecraft commanding pipeline designed for targeted recovery of BAT event mode data around the times of compelling astrophysical events to enable more sensitive GRB searches.\n\nA live reporting of Swift/BAT event data recovered by GUANO can be found at: https://www.swift.psu.edu/guano/\n\n\nView this GCN Circular online at https://gcn.nasa.gov/circulars/34747.\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjk1MjMyMzIwLCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.rfWY-tj_8wsUXo3mXe3p7CU200WoXG2_CidvhkK5XqU\n\n",
"published": "2023-09-20T17:52:11.651477Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-09-20T17:52:11.651494Z",
"modified": "2023-09-20T17:52:11.657831Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 3165,
"topic": "gcn.circular",
"uuid": "bcfec4e7-2e1e-45b9-91f3-32a9e6bfdf10",
"title": "Fermi GBM Statement for Trigger 716527670/230916144",
"submitter": "Hop gcn.circular",
"authors": "Oliver J Roberts at USRA/NASA <oliver.roberts@nasa.gov>",
"data": {
"date": "23/09/20 18:05:31 GMT",
"from": "Oliver J Roberts at USRA/NASA <oliver.roberts@nasa.gov>",
"title": "GCN CIRCULAR",
"number": "34748",
"subject": "Fermi GBM Statement for Trigger 716527670/230916144"
},
"message_text": "O.J. Roberts (USRA/NASA-MSFC), S. Bala (USRA), C. Meegan (UAH)\nreport on behalf of the Fermi GBM Team:\n\n\"At 03:27:45.98 UT on 16 September 2023, the Fermi Gamma-ray Burst Monitor (GBM)\ntriggered on trigger 716527670/230916144 as a GRB with 64% confidence). This trigger\nwas later followed up by GOTO (Vail et al., GCN 34730), identifying a candidate afterglow\n(AT 2023sva) and suggested it was the counterpart.\n\nCareful inspection of the GBM trigger by the Fermi-GBM Team identified a weak\nC1-class solar flare occurring contemporaneously at the trigger time, which dominates\nthe spectrum below 50 keV. There is approximately several hundred counts in the\n50-300 keV band over 12s, which the Team was able to localize. The on-ground calculated\nlocation using the Fermi GBM trigger data over this energy range is\nRA = 143.0, Dec = 70.5 (J2000 degrees, equivalent to J2000 9h 32m, +/- 70d 30'), with a\nstatistical uncertainty of 8.0 degrees (radius, 1-sigma containment, statistical only; there\nis additionally a systematic error which we have characterized as a core-plus-tail model,\nwith 90% of GRBs having a 3.7 deg error and a small tail suffering a larger than 10 deg\nsystematic error. [Connaughton et al. 2015, ApJS, 216, 32] ).\n\nWe note that this localization is 71 degrees from the Sun, and is quite far from the\nRA and Dec of the afterglow candidate reported by Vail et al. in GCN 34730. We therefore\nbelieve these two events to be unrelated and suggest that AT2023sva is an orphan afterglow.\nWe also note that this weak burst is contaminated by the solar flare and that any meaningful\ndata regarding the nature of this transient is likely unrecoverable.\n\nThe skymap can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn230916144/quicklook/glg_skymap_all_bn230916144.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/bn230916144/quicklook/glg_healpix_all_bn230916144.fit\n\nThe GBM light curve can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn230916144/quicklook/glg_lc_medres34_bn230916144.gif\"\n\n\nView this GCN Circular online at https://gcn.nasa.gov/circulars/34748.\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjk1MjMzMTM2LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.uQwfU1gYRz11Xrb3Az0HcXZaMf-1r5-BOn2z0IwSEo0\n\n",
"published": "2023-09-20T18:05:48.148605Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-09-20T18:05:48.148629Z",
"modified": "2023-09-20T18:05:48.156010Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 3191,
"topic": "hermes.message",
"uuid": "4cefe568-1f38-4342-8dac-aa3f23642cd7",
"title": "INTEGRAL follow-up of S230917y",
"submitter": "Volodymyr Savchenko",
"authors": "",
"data": {},
"message_text": "INTEGRAL follow-up of S230917y at 2023-09-17T07:10:34.000\n\n\nSPI-ACS excesses:\nat T0+13.75 FAP = 0.116\nat T0+-18.47 FAP = 0.307\nat T0+252.7 FAP = 0.314\nat T0+-44.6 FAP = 0.394\nat T0+20.7 FAP = 0.694\nat T0+-50.12 FAP = 0.979\nat T0+-84.05 FAP = 0.994\n\n\n\n\nnext break in data in 50 hr: 2023-09-19T09:23:29, for about 9 hr",
"published": "2023-09-21T14:36:02.587193Z",
"message_parser": "Hermes Message Parser v2",
"retracted": false,
"created": "2023-09-21T14:36:02.587213Z",
"modified": "2023-09-21T14:36:02.593639Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 3192,
"topic": "hermes.message",
"uuid": "4a2f2b45-f981-46d7-a056-de5df778992f",
"title": "INTEGRAL follow-up of S230808r",
"submitter": "Volodymyr Savchenko",
"authors": "",
"data": {},
"message_text": "INTEGRAL follow-up of S230808r at 2023-08-08T06:30:36.000\n\n\nSPI-ACS excesses:\n\n\n\n\nnext break in data in 53 hr: 2023-08-10T11:43:58, for 9.3 hr",
"published": "2023-09-21T14:43:36.271757Z",
"message_parser": "Hermes Message Parser v2",
"retracted": false,
"created": "2023-09-21T14:43:36.271779Z",
"modified": "2023-09-21T14:43:36.278562Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 3193,
"topic": "hermes.message",
"uuid": "46319729-98ce-465c-9ff4-00cc67d60f21",
"title": "INTEGRAL follow-up of S230831ar",
"submitter": "Volodymyr Savchenko",
"authors": "",
"data": {},
"message_text": "INTEGRAL follow-up of S230831ar at 2023-08-31T08:23:45.000\n\n\nSPI-ACS excesses:\nat T0+-1.08 FAP = 0.017\nat T0+-0.25 FAP = 0.043\nat T0+-30.78 FAP = 0.083\nat T0+-8.88 FAP = 0.094\nat T0+-87.28 FAP = 0.325\nat T0+9.77 FAP = 0.355\nat T0+-18.25 FAP = 0.379\nat T0+195.52 FAP = 0.718\n\n\n\n\nnext break in data in 10 hr: 2023-08-31T18:31:55, for 9.3 hr",
"published": "2023-09-21T14:48:50.844467Z",
"message_parser": "Hermes Message Parser v2",
"retracted": false,
"created": "2023-09-21T14:48:50.844508Z",
"modified": "2023-09-21T14:48:50.850993Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 3194,
"topic": "hermes.message",
"uuid": "3ddc077b-7009-4e88-b6ef-b7d73a557229",
"title": "INTEGRAL follow-up of S230823d",
"submitter": "Volodymyr Savchenko",
"authors": "",
"data": {},
"message_text": "INTEGRAL follow-up of S230823d at 2023-08-23T00:55:55.000\n\n\nSPI-ACS excesses:\nat T0+-3.74 FAP = 0.126\nat T0+11.69 FAP = 0.283\nat T0+-19.91 FAP = 0.536\nat T0+-11.21 FAP = 0.841\n\n\n\n\nnext break in data in 18 hr: 2023-08-23T18:56:26, for 9.3 hr",
"published": "2023-09-21T14:53:02.340285Z",
"message_parser": "Hermes Message Parser v2",
"retracted": false,
"created": "2023-09-21T14:53:02.340312Z",
"modified": "2023-09-21T14:53:02.346692Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 3195,
"topic": "hermes.message",
"uuid": "0435346f-ad92-4645-acc2-c621a6a8606b",
"title": "INTEGRAL follow-up of S230830ab",
"submitter": "Volodymyr Savchenko",
"authors": "",
"data": {},
"message_text": "INTEGRAL follow-up of S230830ab at 2023-08-30T09:43:02.000\n\n\nSPI-ACS excesses:\nat T0+-42.98 FAP = 0.095\nat T0+23.09 FAP = 0.155\nat T0+-8.83 FAP = 0.168\nat T0+281.87 FAP = 0.322\nat T0+18.34 FAP = 0.348\nat T0+71.64 FAP = 0.565\nat T0+-14.08 FAP = 0.916\nat T0+-32.03 FAP = 0.937\n\n\n\n\nnext break in data in 33 hr: 2023-08-31T18:31:55, for 9.3 hr",
"published": "2023-09-21T14:56:44.859567Z",
"message_parser": "Hermes Message Parser v2",
"retracted": false,
"created": "2023-09-21T14:56:44.859594Z",
"modified": "2023-09-21T14:56:44.865546Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 3196,
"topic": "hermes.message",
"uuid": "d6284a80-6f55-499b-ab2d-5a0f8c1d9d18",
"title": "INTEGRAL follow-up of S230920x",
"submitter": "Volodymyr Savchenko",
"authors": "",
"data": {},
"message_text": "INTEGRAL follow-up of S230920x at 2023-09-20T04:41:16.000\n\n\nSPI-ACS excesses:\nat T0+-171.06 FAP = 0.201\nat T0+19.76 FAP = 0.466\nat T0+-115.56 FAP = 0.595\nat T0+108.21 FAP = 0.984\n\n\n\n\nnext break in data in 43 hr: 2023-09-22T00:06:29, for about 9 hr",
"published": "2023-09-21T14:59:20.048342Z",
"message_parser": "Hermes Message Parser v2",
"retracted": false,
"created": "2023-09-21T14:59:20.048373Z",
"modified": "2023-09-21T14:59:20.054593Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 3197,
"topic": "hermes.message",
"uuid": "428919f5-d36b-4b33-9379-01a28a998988",
"title": "INTEGRAL follow-up of S230920z",
"submitter": "Volodymyr Savchenko",
"authors": "",
"data": {},
"message_text": "INTEGRAL follow-up of S230920z at 2023-09-20T04:43:53.000\n\n\nSPI-ACS excesses:\nat T0+2.11 FAP = 0.018\nat T0+-22.31 FAP = 0.179\nat T0+-14.26 FAP = 0.268\nat T0+212.59 FAP = 0.356\nat T0+-16.84 FAP = 0.383\nat T0+-48.79 FAP = 0.449\nat T0+-272.64 FAP = 0.639\n\n\n\n\nnext break in data in 43 hr: 2023-09-22T00:06:29, for about 9 hr",
"published": "2023-09-21T15:02:28.402693Z",
"message_parser": "Hermes Message Parser v2",
"retracted": false,
"created": "2023-09-21T15:02:28.402713Z",
"modified": "2023-09-21T15:02:28.409397Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 9427,
"topic": "lvk-users.beccatest",
"uuid": "3658509f-1551-4e56-b73c-331fe4d5eed3",
"title": "Generic Message",
"submitter": "",
"authors": "",
"data": {
"ifo": [
"L1"
],
"time": [
1400531800
],
"range": 163.94927849385653
},
"message_text": "",
"published": "2024-05-23T20:36:41.741200Z",
"message_parser": "",
"retracted": false,
"created": "2024-05-23T20:36:41.741221Z",
"modified": "2024-05-23T20:36:41.741229Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 9428,
"topic": "lvk-users.beccatest",
"uuid": "aa3a11ce-2f76-48fe-9b75-d0ff35aa9aec",
"title": "Generic Message",
"submitter": "",
"authors": "",
"data": {
"ifo": [
"V1"
],
"time": [
1400531800
],
"range": 50.38471534301249
},
"message_text": "",
"published": "2024-05-23T20:36:46.760246Z",
"message_parser": "",
"retracted": false,
"created": "2024-05-23T20:36:46.760266Z",
"modified": "2024-05-23T20:36:46.760275Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 11769,
"topic": "lvk-users.beccatest",
"uuid": "c86aaffc-aaec-4e40-b175-0b2dcbd7161c",
"title": "Generic Message",
"submitter": "",
"authors": "",
"data": {
"ifo": [
"L1"
],
"time": [
1400630000
],
"range": 159.3238769016971
},
"message_text": "",
"published": "2024-05-24T23:53:20.921576Z",
"message_parser": "",
"retracted": false,
"created": "2024-05-24T23:53:20.921588Z",
"modified": "2024-05-24T23:53:20.921593Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 3171,
"topic": "gcn.circular",
"uuid": "26f656f8-0d4d-4bc7-b6d6-d70fdca8a19b",
"title": "GRB 230921A: 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": "23/09/21 02:51:55 GMT",
"from": "Fermi GBM Team at MSFC/Fermi-GBM <do_not_reply@GIOC.nsstc.nasa.gov>",
"title": "GCN CIRCULAR",
"number": "34754",
"subject": "GRB 230921A: Fermi GBM Final Real-time Localization"
},
"message_text": "The Fermi GBM team reports the detection of a likely LONG GRB\n\nAt 02:41:32 UT on 21 Sep 2023, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 230921A (trigger 716956897.615146 / 230921112).\n\nThe on-ground calculated location, using the Fermi GBM trigger data, is RA = 239.4, Dec = -33.4 (J2000 degrees, equivalent to J2000 15h 57m, -33d 23'), with a statistical uncertainty of 6.9 degrees.\n\nThe angle from the Fermi LAT boresight is 39.0 degrees.\n\nThe skymap can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn230921112/quicklook/glg_skymap_all_bn230921112.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/bn230921112/quicklook/glg_healpix_all_bn230921112.fit\n\nThe GBM light curve can be found here:\nhttps://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn230921112/quicklook/glg_lc_medres34_bn230921112.gif\n\n\n\n\nView this GCN Circular online at https://gcn.nasa.gov/circulars/34754.\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjk1MjY0NzIwLCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.TSxoSLOAPIwQ2Uss-TDWq6hCv7odamgAcgEdUw-ne3M\n\n",
"published": "2023-09-21T02:52:13.013120Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-09-21T02:52:13.013141Z",
"modified": "2023-09-21T02:52:13.024786Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 3172,
"topic": "igwn.gwalert",
"uuid": "972c72e9-ac79-4c25-9cb6-90f14ec3795c",
"title": "S230921t - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230921t/files/cwb.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230921t/view/"
},
"event": {
"far": 2.16904e-05,
"time": "2023-09-21T07:28:30.773Z",
"group": "Burst",
"search": "BBH",
"area_50": 955.9554618955191,
"area_90": 3091.9577889579396,
"duration": 0.005695,
"pipeline": "CWB",
"properties": {},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "ad3cc77191d6c239c452315ff5c998b5",
"classification": {},
"skymap_version": 0,
"central_frequency": 145.708984
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-09-21T07:29:34Z",
"superevent_id": "S230921t",
"external_coinc": null
},
"message_text": "",
"published": "2023-09-21T07:29:35.376632Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-09-21T07:29:35.376677Z",
"modified": "2023-09-21T07:29:35.388031Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 3173,
"topic": "igwn.gwalert",
"uuid": "d93867ab-4945-4996-b102-5954668ab998",
"title": "S230921t - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230921t/files/cwb.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S230921t/view/"
},
"event": {
"far": 2.16904e-05,
"time": "2023-09-21T07:28:30.773Z",
"group": "Burst",
"search": "BBH",
"area_50": 955.9554618955191,
"area_90": 3091.9577889579396,
"duration": 0.005695,
"pipeline": "CWB",
"properties": {},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "ad3cc77191d6c239c452315ff5c998b5",
"classification": {},
"skymap_version": 0,
"central_frequency": 145.708984
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-09-21T07:34:08Z",
"superevent_id": "S230921t",
"external_coinc": null
},
"message_text": "",
"published": "2023-09-21T07:34:08.908521Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-09-21T07:34:08.908548Z",
"modified": "2023-09-21T07:34:08.914559Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 3174,
"topic": "hermes.message",
"uuid": "4f52765a-d45a-4c07-9d07-39ede7effa6f",
"title": "INTEGRAL follow-up of S230921t",
"submitter": "Volodymyr Savchenko",
"authors": "",
"data": {},
"message_text": "INTEGRAL follow-up of S230921t at 2023-09-21T07:28:30.000\n\n\nSPI-ACS excesses:\nat T0+10.22 FAP = 0.173\nat T0+16.24 FAP = 0.182\nat T0+-49.61 FAP = 0.258\nat T0+-66.71 FAP = 0.423\nat T0+-70.56 FAP = 0.613\nat T0+44.37 FAP = 0.835\n\n\n\n\nnext break in data in 17 hr: 2023-09-22T00:06:29, for about 9 hr",
"published": "2023-09-21T13:23:41.240927Z",
"message_parser": "Hermes Message Parser v2",
"retracted": false,
"created": "2023-09-21T13:23:41.240970Z",
"modified": "2023-09-21T13:23:41.249666Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 3175,
"topic": "hermes.message",
"uuid": "b1110173-edc1-4897-8905-29a5f12b8b3c",
"title": "INTEGRAL follow-up of S230915aq",
"submitter": "Volodymyr Savchenko",
"authors": "",
"data": {},
"message_text": "INTEGRAL follow-up of S230915aq at 2023-09-15T11:07:59.000\n\n\nSPI-ACS excesses:\nat T0+-2.09 FAP = 0.012\nat T0+-22.99 FAP = 0.097\nat T0+-237.94 FAP = 0.115\nat T0+11.94 FAP = 0.251\nat T0+-126.86 FAP = 0.54\n\n\n\n\nnext break in data in 30 hr: 2023-09-16T17:33:35, for 9.3 hr",
"published": "2023-09-21T13:30:14.092628Z",
"message_parser": "Hermes Message Parser v2",
"retracted": false,
"created": "2023-09-21T13:30:14.092694Z",
"modified": "2023-09-21T13:30:14.098843Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 3176,
"topic": "hermes.message",
"uuid": "33b151d4-2e7d-44cf-8ad7-52accf34de24",
"title": "INTEGRAL follow-up of S230919bj",
"submitter": "Volodymyr Savchenko",
"authors": "",
"data": {},
"message_text": "INTEGRAL follow-up of S230919bj at 2023-09-19T21:57:12.000\n\n\nSPI-ACS excesses:\nat T0+1.77 FAP = 0.031\nat T0+0.32 FAP = 0.043\nat T0+-134.18 FAP = 0.087\nat T0+244.77 FAP = 0.248\nat T0+-15.08 FAP = 0.328\nat T0+18.05 FAP = 0.896\n\n\n\n\nnext break in data in 50 hr: 2023-09-22T00:06:29, for about 9 hr",
"published": "2023-09-21T13:30:45.159767Z",
"message_parser": "Hermes Message Parser v2",
"retracted": false,
"created": "2023-09-21T13:30:45.159795Z",
"modified": "2023-09-21T13:30:45.185623Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 3177,
"topic": "hermes.message",
"uuid": "e1c91410-0802-44cc-aa12-fa4b4de0ef10",
"title": "INTEGRAL follow-up of S230806t",
"submitter": "Volodymyr Savchenko",
"authors": "",
"data": {},
"message_text": "INTEGRAL follow-up of S230806t at 2023-08-06T11:21:21.000\n\n\nSPI-ACS excesses:\nat T0+0.68 FAP = 0.116\nat T0+-4.29 FAP = 0.244\nat T0+3.16 FAP = 0.306\nat T0+50.41 FAP = 0.819\n\n\n\n\nnext break in data in 33 hr: 2023-08-07T19:53:51, for 9.3 hr",
"published": "2023-09-21T13:35:21.760653Z",
"message_parser": "Hermes Message Parser v2",
"retracted": false,
"created": "2023-09-21T13:35:21.760673Z",
"modified": "2023-09-21T13:35:21.766758Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 3178,
"topic": "hermes.message",
"uuid": "ed80aca2-5017-4e12-bb83-dfa653c43da8",
"title": "INTEGRAL follow-up of S230916ak",
"submitter": "Volodymyr Savchenko",
"authors": "",
"data": {},
"message_text": "INTEGRAL follow-up of S230916ak at 2023-09-16T08:52:37.000\n\n\nSPI-ACS excesses:\nat T0+0.43 FAP = 0.014\nat T0+-2.0 FAP = 0.081\nat T0+71.73 FAP = 0.102\nat T0+86.3 FAP = 0.156\nat T0+107.63 FAP = 0.368\nat T0+8.38 FAP = 0.38\nat T0+-98.42 FAP = 0.689\nat T0+-292.87 FAP = 0.737\nat T0+42.25 FAP = 0.772\nat T0+-297.9 FAP = 0.862\n\n\n\n\nnext break in data in 8.7 hr: 2023-09-16T17:33:35, for 9.3 hr",
"published": "2023-09-21T13:43:23.566956Z",
"message_parser": "Hermes Message Parser v2",
"retracted": false,
"created": "2023-09-21T13:43:23.566976Z",
"modified": "2023-09-21T13:43:23.572998Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 3179,
"topic": "hermes.message",
"uuid": "a967bed6-5514-49ab-ac28-dfab0a291e9d",
"title": "INTEGRAL follow-up of S230824bb",
"submitter": "Volodymyr Savchenko",
"authors": "",
"data": {},
"message_text": "INTEGRAL follow-up of S230824bb at 2023-08-24T11:32:21.000\n\n\nSPI-ACS excesses:\nat T0+-39.34 FAP = 0.13\nat T0+-58.57 FAP = 0.193\nat T0+37.81 FAP = 0.48\nat T0+-20.54 FAP = 0.536\nat T0+16.11 FAP = 0.689\nat T0+44.78 FAP = 0.852\n\n\n\n\nnext break in data in 47 hr: 2023-08-26T10:47:36, for 9.3 hr",
"published": "2023-09-21T13:51:23.565084Z",
"message_parser": "Hermes Message Parser v2",
"retracted": false,
"created": "2023-09-21T13:51:23.565102Z",
"modified": "2023-09-21T13:51:23.571136Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 4129,
"topic": "igwn.gwalert",
"uuid": "645d49b6-2784-4deb-8088-8b6ad8bd2bc8",
"title": "S231025p - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S231025p/files/cwb.multiorder.fits,0",
"gracedb": "https://gracedb.ligo.org/superevents/S231025p/view/"
},
"event": {
"far": 9.89193e-06,
"time": "2023-10-25T05:38:55.316Z",
"group": "Burst",
"search": "BBH",
"area_50": 1510.7285613801007,
"area_90": 4857.831618482234,
"duration": 0.006001,
"pipeline": "CWB",
"properties": {},
"instruments": [
"H1",
"L1"
],
"significant": false,
"skymap_hash": "b1289b8238ad60529625bd6b8f69ff09",
"classification": {},
"skymap_version": 0,
"central_frequency": 183.506241
},
"alert_type": "PRELIMINARY",
"sequence_num": 1,
"time_created": "2023-10-25T05:40:01Z",
"superevent_id": "S231025p",
"external_coinc": null
},
"message_text": "",
"published": "2023-10-25T05:40:03.097240Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-10-25T05:40:03.097276Z",
"modified": "2023-10-25T05:40:03.119217Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 9434,
"topic": "lvk-users.beccatest",
"uuid": "d4889962-4c39-41a8-8efb-1c9cdec0e831",
"title": "Generic Message",
"submitter": "",
"authors": "",
"data": {
"ifo": [
"V1"
],
"time": [
1400532000
],
"range": 50.74264811226897
},
"message_text": "",
"published": "2024-05-23T20:40:06.378934Z",
"message_parser": "",
"retracted": false,
"created": "2024-05-23T20:40:06.378972Z",
"modified": "2024-05-23T20:40:06.378991Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 9435,
"topic": "lvk-users.beccatest",
"uuid": "f6230258-fa50-419d-8950-b7683b30b4f4",
"title": "Generic Message",
"submitter": "",
"authors": "",
"data": {
"ifo": [
"H1"
],
"time": [
1400532100
],
"range": 153.67389886867545
},
"message_text": "",
"published": "2024-05-23T20:41:38.836501Z",
"message_parser": "",
"retracted": false,
"created": "2024-05-23T20:41:38.836521Z",
"modified": "2024-05-23T20:41:38.836529Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 3294,
"topic": "igwn.gwalert",
"uuid": "b1136803-198c-4a47-acb5-f64c16289a31",
"title": "S230922q - PRELIMINARY",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230922q/files/bayestar.multiorder.fits,1",
"gracedb": "https://gracedb.ligo.org/superevents/S230922q/view/"
},
"event": {
"far": 3.607753495191586e-10,
"time": "2023-09-22T04:06:58.085Z",
"group": "CBC",
"search": "AllSky",
"area_50": 1043.6616478200863,
"area_90": 3974.055410074875,
"duration": null,
"pipeline": "pycbc",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.00038661682314933087,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": true,
"skymap_hash": "c0388dd0940ebfd7bcff65e21d5b464c",
"classification": {
"BBH": 0.9999775936280579,
"BNS": 0.0,
"NSBH": 0.0,
"Terrestrial": 2.2406371942063075e-05
},
"skymap_version": 1,
"central_frequency": null
},
"alert_type": "PRELIMINARY",
"sequence_num": 2,
"time_created": "2023-09-22T04:12:01Z",
"superevent_id": "S230922q",
"external_coinc": null
},
"message_text": "",
"published": "2023-09-22T04:12:02.315921Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-09-22T04:12:02.315944Z",
"modified": "2023-09-22T04:12:02.322269Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 3295,
"topic": "igwn.gwalert",
"uuid": "e2ea5e75-3c73-40e3-b452-6a9242fbd4a5",
"title": "S230922q - INITIAL",
"submitter": "cody.messick-30d512c8",
"authors": "LVK",
"data": {
"urls": {
"skymap": "https://gracedb.ligo.org/api/superevents/S230922q/files/bayestar.multiorder.fits,1",
"gracedb": "https://gracedb.ligo.org/superevents/S230922q/view/"
},
"event": {
"far": 3.607753495191586e-10,
"time": "2023-09-22T04:06:58.085Z",
"group": "CBC",
"search": "AllSky",
"area_50": 1043.6616478200863,
"area_90": 3974.055410074875,
"duration": null,
"pipeline": "pycbc",
"properties": {
"HasNS": 0.0,
"HasMassGap": 0.00038661682314933087,
"HasRemnant": 0.0
},
"instruments": [
"H1",
"L1"
],
"significant": true,
"skymap_hash": "c0388dd0940ebfd7bcff65e21d5b464c",
"classification": {
"BBH": 0.9999775936280579,
"BNS": 0.0,
"NSBH": 0.0,
"Terrestrial": 2.2406371942063075e-05
},
"skymap_version": 1,
"central_frequency": null
},
"alert_type": "INITIAL",
"sequence_num": 3,
"time_created": "2023-09-22T04:35:02Z",
"superevent_id": "S230922q",
"external_coinc": null
},
"message_text": "",
"published": "2023-09-22T04:35:03.820216Z",
"message_parser": "IGWN Alert Avro Parser v1",
"retracted": false,
"created": "2023-09-22T04:35:03.820242Z",
"modified": "2023-09-22T04:35:03.826570Z",
"nonlocalizedevents": [],
"targets": []
},
{
"id": 3296,
"topic": "gcn.circular",
"uuid": "4fe3f11d-4629-4b27-9529-fb1bb9c1bb91",
"title": "LIGO/Virgo/KAGRA S230922q: Identification of a GW compact binary merger candidate",
"submitter": "Hop gcn.circular",
"authors": "ä¸éæ at RESCEU, The University of Tokyo <lpvk5082@g.ecc.u-tokyo.ac.jp>",
"data": {
"date": "23/09/22 04:50:09 GMT",
"from": "ä¸éæ at RESCEU, The University of Tokyo <lpvk5082@g.ecc.u-tokyo.ac.jp>",
"title": "GCN CIRCULAR",
"number": "34756",
"subject": "LIGO/Virgo/KAGRA S230922q: 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 S230922q during\nreal-time processing of data from LIGO Hanford Observatory (H1) and\nLIGO Livingston Observatory (L1) at 2023-09-22 04:06:58.085 UTC (GPS\ntime: 1379390836.085). The candidate was found by the CWB [1], GstLAL\n[2], MBTA [3], and PyCBC Live [4] analysis pipelines.\n\nS230922q is an event of interest because its false alarm rate, as\nestimated by the online analysis, is 3.6e-10 Hz, or about one in 87\nyears. The event's properties can be found at this URL:\n\nhttps://gracedb.ligo.org/superevents/S230922q\n\nThe classification of the GW signal, in order of descending\nprobability, is BBH (>99%), Terrestrial (<1%), BNS (<1%), or NSBH\n(<1%).\n\nAssuming the candidate is astrophysical in origin, the probability\nthat the lighter compact object is consistent with a neutron star mass\n(HasNS) is <1%. [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 <1%.\n\nTwo sky maps are available at this time and can be retrieved from the\nGraceDB event page:\n * bayestar.multiorder.fits,0, an initial localization generated by\nBAYESTAR [6], distributed via GCN notice about 24 seconds after the\ncandidate event time.\n * bayestar.multiorder.fits,1, 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,1. For\nthe bayestar.multiorder.fits,1 sky map, the 90% credible region is\n3975 deg2. Marginalized over the whole sky, the a posteriori\nluminosity distance estimate is 1110 +/- 313 Mpc (a posteriori mean\n+/- standard deviation).\n\nFor further information about analysis methodology and the contents of\nthis alert, refer to the LIGO/Virgo/KAGRA Public Alerts User Guide\nhttps://emfollow.docs.ligo.org/userguide/.\n\n [1] Klimenko et al. PRD 93, 042004 (2016)\n [2] Tsukada et al. arXiv:2305.06286 (2023) and Ewing et al.\narXiv:2305.05625 (2023)\n [3] Aubin et al. CQG 38, 095004 (2021)\n [4] Dal Canton et al. ApJ 923, 254 (2021)\n [5] Chatterjee et al. ApJ 896, 54 (2020)\n [6] Singer & Price PRD 93, 024013 (2016)\n\n\nView this GCN Circular online at https://gcn.nasa.gov/circulars/34756.\n---\nTo unsubscribe, open this link in a web browser:\nhttps://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6ImdjbmNpcmN1bGFyQGRldi5ob3Auc2NpbW1hLm9yZyIsInRvcGljcyI6WyJjaXJjdWxhcnMiXSwiaWF0IjoxNjk1MzU4MjE0LCJpc3MiOiJodHRwczovL2djbi5uYXNhLmdvdiJ9.5U7gmCj4sLkMYvmuhpty6pji5GPBaBQ35nKZPoIREF8\n\n",
"published": "2023-09-22T04:50:25.483880Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-09-22T04:50:25.483912Z",
"modified": "2023-09-22T04:50:25.490854Z",
"nonlocalizedevents": [
{
"event_id": "S230922q"
}
],
"targets": []
},
{
"id": 1,
"topic": "gcn.circular",
"uuid": "025112ec-3f89-43bb-b257-72a036144315",
"title": "LIGO/Virgo S230518h: 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": "23/05/18 18:28:23 GMT",
"from": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
"title": "GCN CIRCULAR",
"number": "33817",
"subject": "LIGO/Virgo S230518h: 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-Amur robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Russia (Blagoveshchensk State Pedagogical University) started inspect of the LIGO/Virgo S230518h errorbox 192 sec after notice time and 10188 sec after trigger time at 2023-05-18 15:48:56 UT, with upper limit up to 17.7 mag. The observations began at zenith distance = 83 deg. The sun altitude is -20.3 deg.\n\nMASTER-SAAO robotic telescope located in South Africa (South African Astronomical Observatory) started inspect of the LIGO/Virgo S230518h errorbox 3191 sec after notice time and 13187 sec after trigger time at 2023-05-18 16:38:55 UT, with upper limit up to 17.7 mag. Observations started at twilight. The observations began at zenith distance = 43 deg. The sun altitude is -11.0 deg.\n\nThe galactic latitude b = -11 deg., longitude l = 223 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/ligo_1.php?id\u0011865\n\nWe obtain a following upper limits.\n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 10278 | 2023-05-18 15:48:56 | MASTER-Amur | (23h 42m 34.05s , +27d 56m 23.2s) | C | 180 | 16.4 |\n 10486 | 2023-05-18 15:52:23 | MASTER-Amur | (23h 36m 00.68s , +26d 00m 33.9s) | C | 180 | 16.5 |\n 10686 | 2023-05-18 15:55:44 | MASTER-Amur | (23h 56m 30.29s , +27d 55m 52.4s) | C | 180 | 15.6 |\n 11213 | 2023-05-18 16:04:31 | MASTER-Amur | (00h 13m 40.72s , +29d 50m 21.9s) | C | 180 | 15.3 |\n 11413 | 2023-05-18 16:07:51 | MASTER-Amur | (23h 55m 58.92s , +31d 42m 40.7s) | C | 180 | 17.0 |\n 11647 | 2023-05-18 16:11:44 | MASTER-Amur | (00h 05m 25.45s , +31d 43m 52.8s) | C | 180 | 16.6 |\n 12170 | 2023-05-18 16:20:28 | MASTER-Amur | (23h 56m 00.17s , +31d 44m 12.4s) | C | 180 | 16.8 |\n 12370 | 2023-05-18 16:23:48 | MASTER-Amur | (00h 05m 18.97s , +31d 43m 14.6s) | C | 180 | 16.9 |\n 12571 | 2023-05-18 16:27:08 | MASTER-Amur | (23h 25m 22.89s , +27d 54m 58.8s) | C | 180 | 17.5 |\n 12770 | 2023-05-18 16:30:28 | MASTER-Amur | (23h 34m 20.58s , +27d 54m 00.4s) | C | 180 | 17.3 |\n 12970 | 2023-05-18 16:33:47 | MASTER-Amur | (23h 18m 57.17s , +26d 01m 19.5s) | C | 180 | 17.5 |\n 13170 | 2023-05-18 16:37:07 | MASTER-Amur | (23h 27m 50.84s , +25d 59m 52.3s) | C | 180 | 17.4 |\n 13278 | 2023-05-18 16:38:55 | MASTER-SAAO | (06h 32m 29.44s , -23d 26m 27.9s) | C | 180 | 17.3 |\n 13278 | 2023-05-18 16:38:55 | MASTER-SAAO | (06h 33m 19.54s , -23d 26m 52.9s) | C | 180 | 17.4 |\n 13370 | 2023-05-18 16:40:27 | MASTER-Amur | (23h 25m 21.09s , +27d 55m 38.3s) | C | 180 | 17.5 |\n 13489 | 2023-05-18 16:42:27 | MASTER-SAAO | (06h 41m 06.20s , -23d 27m 07.7s) | C | 180 | 15.8 |\n 13489 | 2023-05-18 16:42:27 | MASTER-SAAO | (06h 41m 56.73s , -23d 27m 32.5s) | C | 180 | 15.7 |\n 13569 | 2023-05-18 16:43:47 | MASTER-Amur | (23h 34m 18.00s , +27d 54m 49.9s) | C | 180 | 17.5 |\n 13689 | 2023-05-18 16:45:47 | MASTER-SAAO | (06h 26m 56.44s , -21d 32m 00.9s) | C | 180 | 15.9 |\n 13689 | 2023-05-18 16:45:47 | MASTER-SAAO | (06h 27m 46.21s , -21d 32m 26.0s) | C | 180 | 15.9 |\n 13769 | 2023-05-18 16:47:06 | MASTER-Amur | (23h 18m 51.54s , +26d 01m 33.5s) | C | 180 | 17.7 |\n 13901 | 2023-05-18 16:49:18 | MASTER-SAAO | (06h 35m 40.83s , -21d 32m 55.8s) | C | 180 | 17.7 |\n 13901 | 2023-05-18 16:49:18 | MASTER-SAAO | (06h 36m 30.85s , -21d 33m 20.5s) | C | 180 | 17.7 |\n 13968 | 2023-05-18 16:50:26 | MASTER-Amur | (23h 27m 53.06s , +26d 00m 39.5s) | C | 180 | 17.6 |\n 14112 | 2023-05-18 16:52:49 | MASTER-SAAO | (06h 22m 09.91s , -19d 39m 15.3s) | C | 180 | 15.3 |\n 14112 | 2023-05-18 16:52:49 | MASTER-SAAO | (06h 22m 59.36s , -19d 39m 40.9s) | C | 180 | 15.4 |\n 14168 | 2023-05-18 16:53:46 | MASTER-Amur | (23h 26m 09.80s , +20d 17m 47.3s) | C | 180 | 17.5 |\n 14569 | 2023-05-18 17:00:26 | MASTER-Amur | (23h 27m 45.99s , +22d 13m 09.2s) | C | 180 | 17.4 |\n 14769 | 2023-05-18 17:03:46 | MASTER-Amur | (23h 36m 17.86s , +22d 12m 37.0s) | C | 180 | 17.4 |\n 14969 | 2023-05-18 17:07:06 | MASTER-Amur | (23h 26m 03.47s , +20d 19m 20.5s) | C | 180 | 17.4 |\n 15391 | 2023-05-18 17:14:09 | MASTER-Amur | (23h 27m 38.02s , +22d 11m 11.9s) | C | 180 | 17.5 |\n 15591 | 2023-05-18 17:17:28 | MASTER-Amur | (23h 36m 21.64s , +22d 11m 45.9s) | C | 180 | 17.4 |\n 15791 | 2023-05-18 17:20:48 | MASTER-Amur | (23h 30m 53.60s , +24d 05m 24.2s) | C | 180 | 17.6 |\n 15991 | 2023-05-18 17:24:08 | MASTER-Amur | (23h 39m 42.89s , +24d 07m 13.7s) | C | 180 | 17.6 |\n 16190 | 2023-05-18 17:27:28 | MASTER-Amur | (00h 13m 23.27s , +27d 55m 46.2s) | C | 180 | 17.0 |\n 16390 | 2023-05-18 17:30:47 | MASTER-Amur | (00h 22m 34.20s , +27d 54m 50.2s) | C | 180 | 16.8 |\n 16789 | 2023-05-18 17:37:26 | MASTER-Amur | (00h 04m 00.08s , +27d 48m 45.4s) | C | 180 | 16.8 |\n 16989 | 2023-05-18 17:40:46 | MASTER-Amur | (00h 03m 57.56s , +27d 50m 06.1s) | C | 180 | 16.8 |\n 17189 | 2023-05-18 17:44:06 | MASTER-Amur | (00h 03m 57.25s , +27d 48m 30.8s) | C | 180 | 16.7 |\n 17875 | 2023-05-18 17:55:33 | MASTER-Amur | (23h 30m 51.84s , +24d 05m 05.7s) | C | 180 | 16.9 |\n 18075 | 2023-05-18 17:58:52 | MASTER-Amur | (23h 39m 33.41s , +24d 04m 17.8s) | C | 180 | 16.6 |\n 18280 | 2023-05-18 18:02:18 | MASTER-Amur | (00h 13m 26.48s , +27d 53m 29.6s) | C | 180 | 15.9 |\n 18480 | 2023-05-18 18:05:37 | MASTER-Amur | (00h 22m 26.18s , +27d 54m 42.7s) | C | 180 | 15.8 |\n 18679 | 2023-05-18 18:08:57 | MASTER-Amur | (23h 55m 59.05s , +29d 47m 58.1s) | C | 180 | 16.0 |\n 18879 | 2023-05-18 18:12:17 | MASTER-Amur | (00h 05m 53.80s , +29d 47m 33.9s) | C | 180 | 15.8 |\nFilter C is a clear (unfiltred) band.\n\n\nThe observation and reduction will continue.\nThe message may be cited.\n\n",
"published": "2023-05-18T18:28:33.247908Z",
"message_parser": "GCN Circular Parser v1",
"retracted": false,
"created": "2023-05-18T18:28:33.247934Z",
"modified": "2023-05-18T18:28:33.252792Z",
"nonlocalizedevents": [
{
"event_id": "S230518h"
}
],
"targets": []
}
]
}
