GraceDB — Gravitational-Wave Candidate Event Database


LIGO/Virgo O3 Public Alerts

Detection candidates: 33



Event ID Possible Source (Probability) UTC GCN Location FAR Comments GPS
S190930t NSBH (74%), Terrestrial (26%) 1253889265.69Sept. 30, 2019
14:34:07 UTC
GCN Circulars
Notices | VOE
0.000000015430623838181 per 2.0536 years 1253889265.69
S190930s MassGap (95%), Terrestrial (5%) 1253885759.25Sept. 30, 2019
13:35:41 UTC
GCN Circulars
Notices | VOE
0.000000003008303654661 per 10.534 years 1253885759.25
S190928c 1253671923.36Sept. 28, 2019
02:11:45 UTC
GCN Circulars
Notices | VOE
No public skymap image found. 0.000000006728960000001 per 4.7092 years RETRACTED 1253671923.36
S190924h MassGap (>99%) 1253326744.85Sept. 24, 2019
02:18:46 UTC
GCN Circulars
Notices | VOE
0.000000000000000000891 per 3.5493e+10 years 1253326744.85
S190923y NSBH (68%), Terrestrial (32%) 1253278577.65Sept. 23, 2019
12:55:59 UTC
GCN Circulars
Notices | VOE
0.000000047829942217881.5094 per year 1253278577.65
S190915ak BBH (99%) 1252627040.69Sept. 15, 2019
23:57:02 UTC
GCN Circulars
Notices | VOE
0.000000000973523002121 per 32.55 years 1252627040.69
S190910h BNS (61%), Terrestrial (39%) 1252139416.54Sept. 10, 2019
08:29:58 UTC
GCN Circulars
Notices | VOE
0.000000035844861998481.1312 per year 1252139416.54
S190910d NSBH (98%), Terrestrial (2%) 1252113997.24Sept. 10, 2019
01:26:19 UTC
GCN Circulars
Notices | VOE
0.000000003717179897221 per 8.5248 years 1252113997.24
S190901ap BNS (86%), Terrestrial (14%) 1251415879.84Sept. 1, 2019
23:31:01 UTC
GCN Circulars
Notices | VOE
0.000000007027203369741 per 4.5093 years 1251415879.84
S190829u MassGap (90%), Terrestrial (10%) 1251147974.28Aug. 29, 2019
21:05:56 UTC
GCN Circulars
Notices | VOE
0.000000005150665588251 per 6.1522 years RETRACTED 1251147974.28
S190828l BBH (>99%) 1251010527.89Aug. 28, 2019
06:55:09 UTC
GCN Circulars
Notices | VOE
0.000000000046291112721 per 684.54 years 1251010527.89
S190828j BBH (>99%) 1251009263.76Aug. 28, 2019
06:34:05 UTC
GCN Circulars
Notices | VOE
0.000000000000000000001 per 3.7395e+13 years 1251009263.76
S190822c BNS (>99%) 1250472617.59Aug. 22, 2019
01:29:59 UTC
GCN Circulars
Notices | VOE
0.000000000000000006151 per 5.1566e+09 years RETRACTED 1250472617.59
S190816i NSBH (83%), Terrestrial (17%) 1249995889.76Aug. 16, 2019
13:04:31 UTC
GCN Circulars
Notices | VOE
0.000000014360040000001 per 2.2067 years RETRACTED 1249995889.76
S190814bv NSBH (>99%) 1249852257.01Aug. 14, 2019
21:10:39 UTC
GCN Circulars
Notices | VOE
0.000000000000000000001 per 1.559e+25 years 1249852257.01
S190808ae Terrestrial (57%), BNS (43%) 1249338099.50Aug. 8, 2019
22:21:21 UTC
GCN Circulars
Notices | VOE
0.000000033658608094791.0622 per year RETRACTED 1249338099.50
S190728q BBH (95%), MassGap (5%) 1248331528.55July 28, 2019
06:45:10 UTC
GCN Circulars
Notices | VOE
0.000000000000000000001 per 1.2541e+15 years 1248331528.55
S190727h BBH (92%), Terrestrial (5%), MassGap (3%) 1248242631.99July 27, 2019
06:03:33 UTC
GCN Circulars
Notices | VOE
0.000000000137820664391 per 229.92 years 1248242631.99
S190720a BBH (99%), Terrestrial (1%) 1247616534.70July 20, 2019
00:08:36 UTC
GCN Circulars
Notices | VOE
0.000000003801055010691 per 8.3367 years 1247616534.70
S190718y Terrestrial (98%), BNS (2%) 1247495730.07July 18, 2019
14:35:12 UTC
GCN Circulars
Notices | VOE
0.000000036484489800261.1514 per year 1247495730.07
S190707q BBH (>99%) 1246527224.18July 7, 2019
09:33:26 UTC
GCN Circulars
Notices | VOE
0.000000000005264777001 per 6018.9 years 1246527224.18
S190706ai BBH (99%), Terrestrial (1%) 1246487219.34July 6, 2019
22:26:41 UTC
GCN Circulars
Notices | VOE
0.000000001900527505351 per 16.673 years 1246487219.34
S190701ah BBH (93%), Terrestrial (7%) 1246048404.58July 1, 2019
20:33:06 UTC
GCN Circulars
Notices | VOE
0.000000019155375553241 per 1.6543 years 1246048404.58
S190630ag BBH (94%), MassGap (5%) 1245955943.18June 30, 2019
18:52:05 UTC
GCN Circulars
Notices | VOE
0.000000000000143533561 per 2.2077e+05 years 1245955943.18
S190602aq BBH (99%) 1243533585.09June 2, 2019
17:59:27 UTC
GCN Circulars
Notices | VOE
0.000000001900527505351 per 16.673 years 1243533585.09
S190524q Terrestrial (71%), BNS (29%) 1242708744.68May 24, 2019
04:52:06 UTC
GCN Circulars
Notices | VOE
0.000000006970803418511 per 4.5458 years RETRACTED 1242708744.68
S190521r BBH (>99%) 1242459857.46May 21, 2019
07:43:59 UTC
GCN Circulars
Notices | VOE
0.000000000316754584221 per 100.04 years 1242459857.46
S190521g BBH (97%), Terrestrial (3%) 1242442967.61May 21, 2019
03:02:29 UTC
GCN Circulars
Notices | VOE
0.000000003801055010691 per 8.3367 years 1242442967.61
S190519bj BBH (96%), Terrestrial (4%) 1242315362.66May 19, 2019
15:35:44 UTC
GCN Circulars
Notices | VOE
0.000000005701582516041 per 5.5578 years 1242315362.66
S190518bb BNS (75%), Terrestrial (25%) 1242242377.47May 18, 2019
19:19:19 UTC
GCN Circulars
Notices | VOE
0.000000010041531275661 per 3.1557 years RETRACTED 1242242377.47
S190517h BBH (98%), MassGap (2%) 1242107479.99May 17, 2019
05:51:01 UTC
GCN Circulars
Notices | VOE
0.000000002372909985021 per 13.354 years 1242107479.99
S190513bm BBH (94%), MassGap (5%) 1241816086.87May 13, 2019
20:54:28 UTC
GCN Circulars
Notices | VOE
0.000000000000373400311 per 84864 years 1241816086.87
S190512at BBH (99%), Terrestrial (1%) 1241719652.42May 12, 2019
18:07:14 UTC
GCN Circulars
Notices | VOE
0.000000001900527505351 per 16.673 years 1241719652.42
S190510g Terrestrial (58%), BNS (42%) 1241492397.29May 10, 2019
02:59:39 UTC
GCN Circulars
Notices | VOE
0.000000008833569157301 per 3.5872 years 1241492397.29
S190503bf BBH (96%), MassGap (3%) 1240944862.41May 3, 2019
18:54:04 UTC
GCN Circulars
Notices | VOE
0.000000001636111595041 per 19.368 years 1240944862.41
S190426c BNS (49%), MassGap (24%), Terrestrial (14%), NSBH (13%) 1240327333.35April 26, 2019
15:21:55 UTC
GCN Circulars
Notices | VOE
0.000000019469418176341 per 1.6276 years 1240327333.35
S190425z BNS (>99%) 1240215503.01April 25, 2019
08:18:05 UTC
GCN Circulars
Notices | VOE
0.000000000000453764791 per 69834 years 1240215503.01
S190421ar BBH (97%), Terrestrial (3%) 1239917954.41April 21, 2019
21:38:56 UTC
GCN Circulars
Notices | VOE
0.000000014887465458551 per 2.1285 years 1239917954.41
S190412m BBH (>99%) 1239082262.22April 12, 2019
05:30:44 UTC
GCN Circulars
Notices | VOE
0.000000000000000000001 per 1.883e+19 years 1239082262.22
S190408an BBH (>99%) 1238782700.29April 8, 2019
18:18:02 UTC
GCN Circulars
Notices | VOE
0.000000000000000002811 per 1.1273e+10 years 1238782700.29
S190405ar Terrestrial (>99%) 1238515308.86April 5, 2019
16:01:30 UTC
GCN Circulars
Notices | VOE
0.000214097319056682006756.4 per year RETRACTED ** IMPORTANT: this trigger (S190405ar) is not considered to be astrophysical in origin (note the large FAR). A GCN Notice was distributed in error. Also, a Retraction GCN Notice was issued but the event ID was truncated to S190405a due to a bug. 1238515308.86