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 O4c.
  • Less-significant events are not shown by default. Press "Show All Public Events" to show significant and less-significant events.

O4c Significant Detection Candidates: 1220 (1220 Total - 0 Retracted)

O4c Low Significance Detection Candidates: 562 (Total)


Show All Public Events

Event ID Possible Source (Probability) Significant UTC GCN Location FAR Comments GPS
S250924bf Yes 1442726427.64Sept. 24, 2025
05:20:09 UTC
GCN Circular Query
Notices | VOE
0.000000000129229000001 per 245.21 years 1442726427.64
S250924bc BBH (99%), Terrestrial (1%) Yes 1442725642.22Sept. 24, 2025
05:07:04 UTC
GCN Circular Query
Notices | VOE
0.000000005298362000001 per 5.9807 years 1442725642.22
S250924aj BNS (82%), NSBH (18%) Yes 1442716938.15Sept. 24, 2025
02:42:00 UTC
GCN Circular Query
Notices | VOE
0.000000000000285325401 per 1.1106e+05 years 1442716938.15
S250924ag BBH (87%), NSBH (13%) Yes 1442716169.97Sept. 24, 2025
02:29:11 UTC
GCN Circular Query
Notices | VOE
0.000000000000000976481 per 3.2451e+07 years 1442716169.97
S250924ac BBH (85%), NSBH (14%) Yes 1442715401.89Sept. 24, 2025
02:16:23 UTC
GCN Circular Query
Notices | VOE
0.000000002056786000001 per 15.407 years 1442715401.89
S250924z NSBH (>99%) Yes 1442714889.94Sept. 24, 2025
02:07:51 UTC
GCN Circular Query
Notices | VOE
0.000000000000115127601 per 2.7524e+05 years 1442714889.94
S250924w BBH (>99%) Yes 1442714378.25Sept. 24, 2025
01:59:20 UTC
GCN Circular Query
Notices | VOE
0.000000000000000000021 per 1.4654e+12 years 1442714378.25
S250924i BBH (92%), NSBH (5%), Terrestrial (3%) Yes 1442710025.75Sept. 24, 2025
00:46:47 UTC
GCN Circular Query
Notices | VOE
0.000000023278919104611 per 1.3612 years 1442710025.75
S250924f Yes 1442709024.30Sept. 24, 2025
00:30:06 UTC
GCN Circular Query
Notices | VOE
0.000000000129229000001 per 245.21 years 1442709024.30
S250924e NSBH (76%), BNS (24%) Yes 1442709002.17Sept. 24, 2025
00:29:44 UTC
GCN Circular Query
Notices | VOE
0.000000000000002624091 per 1.2076e+07 years 1442709002.17
S250924c BBH (93%), Terrestrial (7%) Yes 1442708234.24Sept. 24, 2025
00:16:56 UTC
GCN Circular Query
Notices | VOE
0.000000052151530000001.6458 per year 1442708234.24
S250923ix NSBH (>99%) Yes 1442706698.26Sept. 23, 2025
23:51:20 UTC
GCN Circular Query
Notices | VOE
0.000000000000986315201 per 32128 years 1442706698.26
S250923ip BBH (64%), NSBH (35%) Yes 1442705417.95Sept. 23, 2025
23:29:59 UTC
GCN Circular Query
Notices | VOE
0.000000000377131700001 per 84.024 years 1442705417.95
S250923io NSBH (58%), BBH (42%) Yes 1442705162.18Sept. 23, 2025
23:25:44 UTC
GCN Circular Query
Notices | VOE
0.000000000000352391601 per 89923 years 1442705162.18
S250923im BBH (97%), Terrestrial (3%) Yes 1442704393.90Sept. 23, 2025
23:12:55 UTC
GCN Circular Query
Notices | VOE
0.000000051175743310241.615 per year 1442704393.90