LIGO/Virgo/KAGRA Public Alerts

  • More details about public alerts are provided in the LIGO/Virgo/KAGRA Alerts User Guide.
  • Retractions are marked in red. Retraction means that the candidate was manually vetted and is no longer considered a candidate of interest.

O3 Detection Candidates: 56 (80 Total - 24 Retracted)


Event ID Possible Source (Probability) UTC GCN Location FAR Comments GPS
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
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
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