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: 203 (228 Total - 25 Retracted)

O4 Low Significance Detection Candidates: 3772 (Total)


Show All Public Events

Event ID Possible Source (Probability) Significant UTC GCN Location FAR Comments GPS
S230601bf BBH (>99%) Yes 1369694512.10June 1, 2023
22:41:34 UTC
GCN Circular Query
Notices | VOE
0.000000000000001713571 per 1.8492e+07 years 1369694512.10
S230529ay NSBH (62%), BNS (31%), Terrestrial (7%) Yes 1369419318.75May 29, 2023
18:15:00 UTC
GCN Circular Query
Notices | VOE
0.000000000197512118501 per 160.44 years 1369419318.75
S230524x BNS (75%), Terrestrial (25%) Yes 1368994979.84May 24, 2023
20:22:41 UTC
GCN Circular Query
Notices | VOE
0.000000072244439059562.2799 per year RETRACTED 1368994979.84