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: 2 (2 Total - 0 Retracted)

O4 Low Significance Detection Candidates: 0 (Total)


Show All Public Events

Event ID Possible Source (Probability) Significant UTC GCN Location FAR Comments GPS
S240109b Yes 1388811889.84Jan. 9, 2024
05:04:31 UTC
GCN Circular Query
Notices | VOE
No public skymap image found. 0.000000007346090200941 per 4.3136 years 1388811889.84
S240411a Yes 1396913445.94April 11, 2024
23:30:27 UTC
GCN Circular Query
Notices | VOE
No public skymap image found. 0.000000037596610000001.1865 per year 1396913445.94