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: 1659 (1659 Total - 0 Retracted)

O4 Low Significance Detection Candidates: 771 (Total)


Show All Public Events

Event ID Possible Source (Probability) Significant UTC GCN Location FAR Comments GPS
S251002fx Yes 1443452298.23Oct. 2, 2025
14:58:00 UTC
GCN Circular Query
Notices | VOE
0.000000002122025000001 per 14.933 years 1443452298.23
S251002fw BBH (78%), Terrestrial (22%) Yes 1443452041.89Oct. 2, 2025
14:53:43 UTC
GCN Circular Query
Notices | VOE
0.000000012035600000001 per 2.6329 years 1443452041.89
S251002fv BBH (>99%) Yes 1443451786.12Oct. 2, 2025
14:49:28 UTC
GCN Circular Query
Notices | VOE
0.000000015837729211221 per 2.0008 years 1443451786.12
S251002fs Yes 1443451274.01Oct. 2, 2025
14:40:56 UTC
GCN Circular Query
Notices | VOE
0.000000000006642405001 per 4770.6 years 1443451274.01
S251002fp BBH (99%) Yes 1443449737.97Oct. 2, 2025
14:15:19 UTC
GCN Circular Query
Notices | VOE
0.000000000000013454831 per 2.3551e+06 years 1443449737.97
S251002fn BBH (94%), Terrestrial (6%) Yes 1443449482.23Oct. 2, 2025
14:11:04 UTC
GCN Circular Query
Notices | VOE
0.000000045115020000001.4237 per year 1443449482.23
S251002fg NSBH (>99%) Yes 1443447178.17Oct. 2, 2025
13:32:40 UTC
GCN Circular Query
Notices | VOE
0.000000000000000002821 per 1.1243e+10 years 1443447178.17
S251002ex BNS (63%), NSBH (37%) Yes 1443443338.16Oct. 2, 2025
12:28:40 UTC
GCN Circular Query
Notices | VOE
0.000000000000000002431 per 1.3036e+10 years 1443443338.16
S251002eu BNS (85%), Terrestrial (15%) Yes 1443440266.11Oct. 2, 2025
11:37:28 UTC
GCN Circular Query
Notices | VOE
0.000000000316880878141 per 100 years 1443440266.11
S251002es BNS (>99%) Yes 1443436682.03Oct. 2, 2025
10:37:44 UTC
GCN Circular Query
Notices | VOE
0.000000000000000268711 per 1.1793e+08 years 1443436682.03
S251002em BBH (>99%) Yes 1443434634.10Oct. 2, 2025
10:03:36 UTC
GCN Circular Query
Notices | VOE
0.000000000000000898901 per 3.5252e+07 years 1443434634.10
S251002eg BBH (95%), Terrestrial (5%) Yes 1443432842.08Oct. 2, 2025
09:33:44 UTC
GCN Circular Query
Notices | VOE
0.000000038408370000001.2121 per year 1443432842.08
S251002ec BNS (>99%) Yes 1443432329.91Oct. 2, 2025
09:25:11 UTC
GCN Circular Query
Notices | VOE
0.000000000000646802601 per 48992 years 1443432329.91
S251002dx BBH (99%), Terrestrial (1%) Yes 1443431049.82Oct. 2, 2025
09:03:51 UTC
GCN Circular Query
Notices | VOE
0.000000000320095000001 per 98.996 years 1443431049.82
S251002dw BBH (96%), Terrestrial (4%) Yes 1443430282.09Oct. 2, 2025
08:51:04 UTC
GCN Circular Query
Notices | VOE
0.000000026731970000001 per 1.1854 years 1443430282.09