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: 108 (122 Total - 14 Retracted)

O4 Low Significance Detection Candidates: 2022 (Total)


Show All Public Events

Event ID Possible Source (Probability) Significant UTC GCN Location FAR Comments GPS
S240618ah BBH (96%), Terrestrial (4%) Yes 1402730205.15June 18, 2024
07:16:27 UTC
GCN Circular Query
Notices | VOE
0.000000065065475602172.0533 per year 1402730205.15
S240615ea BBH (>99%) Yes 1402502873.33June 15, 2024
16:07:35 UTC
GCN Circular Query
Notices | VOE
0.000000015204220042771 per 2.0842 years 1402502873.33
S240615dg BBH (>99%) Yes 1402486598.72June 15, 2024
11:36:20 UTC
GCN Circular Query
Notices | VOE
0.000000000316754584221 per 100.04 years 1402486598.72
S240601co BBH (>99%) Yes 1401318622.03June 1, 2024
23:10:04 UTC
GCN Circular Query
Notices | VOE
0.000000000060052570001 per 527.67 years 1401318622.03
S240601aj BBH (51%), Terrestrial (49%) Yes 1401257538.36June 1, 2024
06:12:00 UTC
GCN Circular Query
Notices | VOE
0.000000030688900000001 per 1.0326 years 1401257538.36
S240531bp BBH (>99%) Yes 1401177186.46May 31, 2024
07:52:48 UTC
GCN Circular Query
Notices | VOE
0.000000000003743762061 per 8464.2 years 1401177186.46
S240530a BBH (>99%) Yes 1401067475.95May 30, 2024
01:24:17 UTC
GCN Circular Query
Notices | VOE
0.000000000950263752671 per 33.347 years 1401067475.95
S240527fv BBH (99%) Yes 1400886568.38May 27, 2024
23:09:10 UTC
GCN Circular Query
Notices | VOE
0.000000014253956290101 per 2.2231 years 1400886568.38
S240527en BBH (>99%) Yes 1400870087.06May 27, 2024
18:34:29 UTC
GCN Circular Query
Notices | VOE
0.000000002534036673801 per 12.505 years 1400870087.06
S240525p BBH (99%), Terrestrial (1%) Yes 1400641948.64May 25, 2024
03:12:10 UTC
GCN Circular Query
Notices | VOE
0.000000016772763017811 per 1.8893 years 1400641948.64
S240520cv BBH (97%), NSBH (3%) Yes 1400276194.97May 20, 2024
21:36:16 UTC
GCN Circular Query
Notices | VOE
0.000000000316754584221 per 100.04 years 1400276194.97
S240515m BBH (>99%) Yes 1399769599.11May 15, 2024
00:53:01 UTC
GCN Circular Query
Notices | VOE
0.000000000000000000011 per 6.0109e+12 years 1399769599.11
S240514x BBH (>99%) Yes 1399724251.72May 14, 2024
12:17:13 UTC
GCN Circular Query
Notices | VOE
0.000000000316754584221 per 100.04 years 1399724251.72
S240514c BBH (99%) Yes 1399709019.05May 14, 2024
08:03:21 UTC
GCN Circular Query
Notices | VOE
0.000000009619912638971 per 3.294 years 1399709019.05
S240513ei BBH (>99%) Yes 1399660400.90May 13, 2024
18:33:02 UTC
GCN Circular Query
Notices | VOE
0.000000000316754584221 per 100.04 years 1399660400.90