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.
  • Less-significant events are marked in grey, and are not manually vetted. Consult the LVK Alerts User Guide for more information on significance in O4.
  • Less-significant events are not shown by default. Press "Show All Public Events" to show significant and less-significant events.

O4 Significant Detection Candidates: 236 (263 Total - 27 Retracted)

O4 Low Significance Detection Candidates: 4647 (Total)


Show All Public Events

Event ID Possible Source (Probability) Significant UTC GCN Location FAR Comments GPS
S231206ca BBH (>99%) Yes 1385940712.53Dec. 6, 2023
23:31:34 UTC
GCN Circular Query
Notices | VOE
0.000000000316754584221 per 100.04 years 1385940712.53
S231129ac BBH (99%), Terrestrial (1%) Yes 1385281083.64Nov. 29, 2023
08:17:45 UTC
GCN Circular Query
Notices | VOE
0.000000017647269585521 per 1.7956 years 1385281083.64
S231127cg BBH (>99%) Yes 1385139198.88Nov. 27, 2023
16:53:00 UTC
GCN Circular Query
Notices | VOE
0.000000005814757056181 per 5.4496 years 1385139198.88
S231123cg BBH (>99%) Yes 1384782888.63Nov. 23, 2023
13:54:30 UTC
GCN Circular Query
Notices | VOE
0.000000000316754584221 per 100.04 years 1384782888.63
S231119u BBH (95%), Terrestrial (5%) Yes 1384415586.09Nov. 19, 2023
07:52:48 UTC
GCN Circular Query
Notices | VOE
0.000000074307040909582.345 per year 1384415586.09
S231118an BBH (74%), Terrestrial (24%), NSBH (1%) Yes 1384333580.01Nov. 18, 2023
09:06:02 UTC
GCN Circular Query
Notices | VOE
0.000000074763157442702.3593 per year 1384333580.01
S231118ab BBH (99%), Terrestrial (1%) Yes 1384326860.24Nov. 18, 2023
07:14:02 UTC
GCN Circular Query
Notices | VOE
0.000000018952725611141 per 1.672 years 1384326860.24
S231118d BBH (>99%) Yes 1384304204.84Nov. 18, 2023
00:56:26 UTC
GCN Circular Query
Notices | VOE
0.000000000316754584221 per 100.04 years 1384304204.84
S231114n BBH (>99%) Yes 1383971549.25Nov. 14, 2023
04:32:11 UTC
GCN Circular Query
Notices | VOE
0.000000000316754584221 per 100.04 years 1383971549.25
S231113bw BBH (96%), Terrestrial (4%) Yes 1383941075.91Nov. 13, 2023
20:04:17 UTC
GCN Circular Query
Notices | VOE
0.000000013620447121651 per 2.3265 years 1383941075.91
S231113bb BBH (96%), Terrestrial (4%) Yes 1383913601.88Nov. 13, 2023
12:26:23 UTC
GCN Circular Query
Notices | VOE
0.000000055969890484001.7663 per year 1383913601.88
S231112ag BBH (>99%) Yes 1383822141.44Nov. 12, 2023
11:02:03 UTC
GCN Circular Query
Notices | VOE
0.000000000000010608401 per 2.9871e+06 years RETRACTED 1383822141.44
S231110g BBH (97%), Terrestrial (3%) Yes 1383624218.22Nov. 10, 2023
04:03:20 UTC
GCN Circular Query
Notices | VOE
0.000000019287428543181 per 1.6429 years 1383624218.22
S231108u BBH (>99%) Yes 1383483120.46Nov. 8, 2023
12:51:42 UTC
GCN Circular Query
Notices | VOE
0.000000000316754584221 per 100.04 years 1383483120.46
S231104ac BBH (>99%) Yes 1383140076.94Nov. 4, 2023
13:34:18 UTC
GCN Circular Query
Notices | VOE
0.000000000316754584221 per 100.04 years 1383140076.94