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: 36 (36 Total - 0 Retracted)

O4 Low Significance Detection Candidates: 11 (Total)


Show All Public Events

Event ID Possible Source (Probability) Significant UTC GCN Location FAR Comments GPS
S230929x BBH (>99%) Yes 1380040785.21Sept. 29, 2023
16:39:27 UTC
GCN Circular Query
Notices | VOE
0.000000000000000116811 per 2.7128e+08 years 1380040785.21
S230929w BBH (>99%) Yes 1380040777.83Sept. 29, 2023
16:39:19 UTC
GCN Circular Query
Notices | VOE
0.000000000000000131131 per 2.4166e+08 years 1380040777.83
S230929v BBH (>99%) Yes 1380040770.78Sept. 29, 2023
16:39:12 UTC
GCN Circular Query
Notices | VOE
0.000000000000000006781 per 4.6719e+09 years 1380040770.78
S230929u BBH (>99%) Yes 1380040763.54Sept. 29, 2023
16:39:05 UTC
GCN Circular Query
Notices | VOE
0.000000000000000003481 per 9.1187e+09 years 1380040763.54
S230929t BBH (>99%) Yes 1380040755.84Sept. 29, 2023
16:38:57 UTC
GCN Circular Query
Notices | VOE
0.000000000000000105661 per 2.9992e+08 years 1380040755.84
S230929s BBH (>99%) Yes 1380040748.51Sept. 29, 2023
16:38:50 UTC
GCN Circular Query
Notices | VOE
0.000000000000000007581 per 4.1806e+09 years 1380040748.51
S230929r BBH (>99%) Yes 1380040741.02Sept. 29, 2023
16:38:43 UTC
GCN Circular Query
Notices | VOE
0.000000000000000164021 per 1.932e+08 years 1380040741.02
S230929q BBH (>99%) Yes 1380040733.54Sept. 29, 2023
16:38:35 UTC
GCN Circular Query
Notices | VOE
0.000000000000000000021 per 1.5763e+12 years 1380040733.54
S230929p BBH (>99%) Yes 1380040724.65Sept. 29, 2023
16:38:26 UTC
GCN Circular Query
Notices | VOE
0.000000000000000066891 per 4.7373e+08 years 1380040724.65
S230929o BBH (>99%) Yes 1380040718.27Sept. 29, 2023
16:38:20 UTC
GCN Circular Query
Notices | VOE
0.000000000000000036141 per 8.7685e+08 years 1380040718.27
S230929n BBH (>99%) Yes 1380040712.41Sept. 29, 2023
16:38:14 UTC
GCN Circular Query
Notices | VOE
0.000000000000000070661 per 4.4843e+08 years 1380040712.41
S230929m BBH (>99%) Yes 1380040705.97Sept. 29, 2023
16:38:07 UTC
GCN Circular Query
Notices | VOE
0.000000000000000123581 per 2.5641e+08 years 1380040705.97
S230929l BBH (>99%) Yes 1380040697.07Sept. 29, 2023
16:37:59 UTC
GCN Circular Query
Notices | VOE
0.000000000000000026121 per 1.2134e+09 years 1380040697.07
S230929k BBH (>99%) Yes 1380040691.65Sept. 29, 2023
16:37:53 UTC
GCN Circular Query
Notices | VOE
0.000000000000000101921 per 3.1092e+08 years 1380040691.65
S230929j BBH (>99%) Yes 1380040686.76Sept. 29, 2023
16:37:48 UTC
GCN Circular Query
Notices | VOE
0.000000000000000013141 per 2.4124e+09 years 1380040686.76