GraceDB — Gravitational-Wave Candidate Event Database


LIGO/Virgo O3 Public Alerts

Detection candidates: 56



Event ID Possible Source (Probability) UTC GCN Location FAR Comments GPS
S200316bj MassGap (>99%) 1268431094.16March 16, 2020
21:57:56 UTC
GCN Circulars
Notices | VOE
0.000000000070979279011 per 446.44 years 1268431094.16
S200311bg BBH (>99%) 1267963151.40March 11, 2020
11:58:53 UTC
GCN Circulars
Notices | VOE
0.000000000000000000001 per 3.5448e+17 years 1267963151.40
S200308e NSBH (83%), Terrestrial (17%) 1267665585.60March 8, 2020
01:19:27 UTC
GCN Circulars
Notices | VOE
0.000000003618608000001 per 8.757 years RETRACTED 1267665585.60
S200303ba BBH (86%), Terrestrial (14%) 1267272966.71March 3, 2020
12:15:48 UTC
GCN Circulars
Notices | VOE
0.000000013156162340731 per 2.4086 years RETRACTED 1267272966.71
S200302c BBH (89%), Terrestrial (11%) 1267149509.52March 2, 2020
01:58:11 UTC
GCN Circulars
Notices | VOE
0.000000009349090689401 per 3.3894 years 1267149509.52
S200225q BBH (96%), Terrestrial (4%) 1266645879.40Feb. 25, 2020
06:04:21 UTC
GCN Circulars
Notices | VOE
0.000000009185882942511 per 3.4497 years 1266645879.40
S200224ca BBH (>99%) 1266618172.38Feb. 24, 2020
22:22:34 UTC
GCN Circulars
Notices | VOE
0.000000000016050019531 per 1974.3 years 1266618172.38
S200219ac BBH (96%), Terrestrial (4%) 1266140673.19Feb. 19, 2020
09:44:15 UTC
GCN Circulars
Notices | VOE
0.000000013303692537421 per 2.3819 years 1266140673.19
S200213t BNS (63%), Terrestrial (37%) 1265602258.33Feb. 13, 2020
04:10:40 UTC
GCN Circulars
Notices | VOE
0.000000017669381170071 per 1.7934 years 1265602258.33
S200208q BBH (99%) 1265202095.99Feb. 8, 2020
13:01:17 UTC
GCN Circulars
Notices | VOE
0.000000002517570000001 per 12.587 years 1265202095.99
S200129m BBH (>99%) 1264316116.44Jan. 29, 2020
06:54:58 UTC
GCN Circulars
Notices | VOE
0.000000000000000000001 per 4.7313e+23 years 1264316116.44
S200128d BBH (97%), Terrestrial (3%) 1264213229.90Jan. 28, 2020
02:20:11 UTC
GCN Circulars
Notices | VOE
0.000000016471238379671 per 1.9238 years 1264213229.90
S200116ah NSBH (>99%) 1263211020.17Jan. 16, 2020
11:56:42 UTC
GCN Circulars
Notices | VOE
0.000000000002028965971 per 15618 years RETRACTED 1263211020.17
S200115j MassGap (>99%) 1263097407.75Jan. 15, 2020
04:23:09 UTC
GCN Circulars
Notices | VOE
0.000000000020943579341 per 1513 years An additional sky map, LALInference.fits.gz,1 , was uploaded to GraceDB on January 20. However, the preferred sky map is still LALInference.fits.gz,0 , which was uploaded on January 17 and announced in a GCN Notice and GCN Circular 26807. LALInference.fits.gz,1 is from an 'online' parameter estimation run that was started automatically on January 15 and completed on January 20. While the results are basically consistent, it used some data containing low-frequency noise, and thus the LVC parameter estimation team considers the 'offline' PE analysis results LALInference.fits.gz,0 (which was set up to avoid that low-frequency noise) to be more reliable. 1263097407.75
S200114f 1263002916.24Jan. 14, 2020
02:08:18 UTC
GCN Circulars
Notices | VOE
No public skymap image found. 0.000000001226420000001 per 25.838 years 1263002916.24
S200112r BBH (>99%) 1262879936.09Jan. 12, 2020
15:58:38 UTC
GCN Circulars
Notices | VOE
0.000000000012829846251 per 2469.9 years 1262879936.09
S200108v BBH (>99%) 1262512856.56Jan. 8, 2020
10:00:38 UTC
GCN Circulars
Notices | VOE
0.000000000000266889921 per 1.1873e+05 years RETRACTED 1262512856.56
S200106av Terrestrial (>99%) 1262370881.58Jan. 6, 2020
18:34:23 UTC
GCN Circulars
Notices | VOE
0.000000031276819356661 per 1.0131 years RETRACTED 1262370881.58
S200106au Terrestrial (93%), NSBH (7%) 1262370887.29Jan. 6, 2020
18:34:29 UTC
GCN Circulars
Notices | VOE
0.000000003660500791371 per 8.6568 years RETRACTED 1262370887.29
S200105ae Terrestrial (97%), NSBH (3%) 1262276684.06Jan. 5, 2020
16:24:26 UTC
GCN Circulars
Notices | VOE
0.0000007671711717426724.21 per year 1262276684.06
S191225aq Terrestrial (61%), MassGap (39%) 1261346253.87Dec. 25, 2019
21:57:15 UTC
GCN Circulars
Notices | VOE
0.000000012670183368981 per 2.501 years RETRACTED 1261346253.87
S191222n BBH (>99%) 1261020955.12Dec. 22, 2019
03:35:37 UTC
GCN Circulars
Notices | VOE
0.000000000006459095211 per 4906 years 1261020955.12
S191220af BNS (>99%) 1260879872.69Dec. 20, 2019
12:24:14 UTC
GCN Circulars
Notices | VOE
0.000000000396317530991 per 79.956 years RETRACTED 1260879872.69
S191216ap BBH (99%) 1260567236.47Dec. 16, 2019
21:33:38 UTC
GCN Circulars
Notices | VOE
0.000000000000000000001 per 2.8035e+15 years 1260567236.47
S191215w BBH (>99%) 1260484270.33Dec. 15, 2019
22:30:52 UTC
GCN Circulars
Notices | VOE
0.000000001006461740511 per 31.485 years 1260484270.33
S191213ai NSBH (85%), Terrestrial (15%) 1260287963.90Dec. 13, 2019
15:59:05 UTC
GCN Circulars
Notices | VOE
0.000000020035273965861 per 1.5816 years RETRACTED 1260287963.90
S191213g BNS (77%), Terrestrial (23%) 1260246866.14Dec. 13, 2019
04:34:08 UTC
GCN Circulars
Notices | VOE
0.000000035482395919001.1197 per year 1260246866.14
S191212q Terrestrial (51%), NSBH (49%) 1260174466.64Dec. 12, 2019
08:27:28 UTC
GCN Circulars
Notices | VOE
0.000000033687030000001.0631 per year RETRACTED 1260174466.64
S191205ah NSBH (93%), Terrestrial (7%) 1259617946.57Dec. 5, 2019
21:52:08 UTC
GCN Circulars
Notices | VOE
0.000000012483929381961 per 2.5383 years 1259617946.57
S191204r BBH (>99%) 1259514944.09Dec. 4, 2019
17:15:26 UTC
GCN Circulars
Notices | VOE
0.000000000000000000001 per 1.0324e+17 years 1259514944.09
S191129u BBH (>99%) 1259070047.20Nov. 29, 2019
13:40:29 UTC
GCN Circulars
Notices | VOE
0.000000000000000000001 per 1.1958e+27 years 1259070047.20
S191124be MassGap (93%), Terrestrial (7%) 1258624776.10Nov. 24, 2019
09:59:18 UTC
GCN Circulars
Notices | VOE
0.000000001678100000001 per 18.883 years RETRACTED 1258624776.10
S191120at MassGap (83%), Terrestrial (17%) 1258315735.32Nov. 20, 2019
20:08:37 UTC
GCN Circulars
Notices | VOE
0.000000006109056431011 per 5.1871 years RETRACTED 1258315735.32
S191120aj NSBH (61%), Terrestrial (39%) 1258302232.44Nov. 20, 2019
16:23:34 UTC
GCN Circulars
Notices | VOE
0.000000028601210000001 per 1.1079 years RETRACTED 1258302232.44
S191117j NSBH (>99%) 1258006120.45Nov. 17, 2019
06:08:22 UTC
GCN Circulars
Notices | VOE
0.000000000000000001111 per 2.8433e+10 years RETRACTED 1258006120.45
S191110af 1257462422.18Nov. 10, 2019
23:06:44 UTC
GCN Circulars
Notices | VOE
No public skymap image found. 0.000000002498820000001 per 12.681 years RETRACTED 1257462422.18
S191110x MassGap (>99%) 1257444540.21Nov. 10, 2019
18:08:42 UTC
GCN Circulars
Notices | VOE
0.000000000029295316641 per 1081.7 years RETRACTED 1257444540.21
S191109d BBH (>99%) 1257296855.22Nov. 9, 2019
01:07:17 UTC
GCN Circulars
Notices | VOE
0.000000000000153677021 per 2.062e+05 years 1257296855.22
S191105e BBH (95%), Terrestrial (5%) 1256999739.93Nov. 5, 2019
14:35:21 UTC
GCN Circulars
Notices | VOE
0.000000022828709059841 per 1.3881 years 1256999739.93
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%) 1242107479.84May 17, 2019
05:51:01 UTC
GCN Circulars
Notices | VOE
0.000000002372909985021 per 13.354 years 1242107479.84
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