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: 1260 (1260 Total - 0 Retracted)

O4c Low Significance Detection Candidates: 583 (Total)


Show All Public Events

Event ID Possible Source (Probability) Significant UTC GCN Location FAR Comments GPS
S250925ie Terrestrial (64%), BNS (25%), NSBH (11%) Yes 1442866954.21Sept. 25, 2025
20:22:16 UTC
GCN Circular Query
Notices | VOE
0.000000020905802558811 per 1.5158 years 1442866954.21
S250925id NSBH (75%), BNS (25%) Yes 1442866441.78Sept. 25, 2025
20:13:43 UTC
GCN Circular Query
Notices | VOE
0.000000000000000000001 per 2.185e+13 years 1442866441.78
S250925ib NSBH (62%), Terrestrial (19%), BBH (18%) Yes 1442864393.89Sept. 25, 2025
19:39:35 UTC
GCN Circular Query
Notices | VOE
0.000000002074429980011 per 15.276 years 1442864393.89
S250925hr BNS (89%), Terrestrial (11%) Yes 1442861321.76Sept. 25, 2025
18:48:23 UTC
GCN Circular Query
Notices | VOE
0.000000000959213300001 per 33.035 years 1442861321.76
S250925hq Yes 1442860570.64Sept. 25, 2025
18:35:52 UTC
GCN Circular Query
Notices | VOE
0.000000002455350000001 per 12.906 years 1442860570.64
S250925hj NSBH (>99%) Yes 1442858506.18Sept. 25, 2025
18:01:28 UTC
GCN Circular Query
Notices | VOE
0.000000000000000284441 per 1.1141e+08 years 1442858506.18
S250925hi NSBH (>99%) Yes 1442858249.95Sept. 25, 2025
17:57:11 UTC
GCN Circular Query
Notices | VOE
0.000000000000000284441 per 1.1141e+08 years 1442858249.95
S250925hc Terrestrial (97%), BNS (3%) Yes 1442857483.10Sept. 25, 2025
17:44:25 UTC
GCN Circular Query
Notices | VOE
0.000000083715555326702.6419 per year 1442857483.10
S250925hb Terrestrial (78%), BBH (22%) Yes 1442857070.06Sept. 25, 2025
17:37:32 UTC
GCN Circular Query
Notices | VOE
0.00000374907600000000118.31 per year 1442857070.06
S250925ha Yes 1442856731.38Sept. 25, 2025
17:31:53 UTC
GCN Circular Query
Notices | VOE
0.000000001526480000001 per 20.759 years 1442856731.38
S250925gz BBH (50%), NSBH (48%), Terrestrial (2%) Yes 1442856713.91Sept. 25, 2025
17:31:35 UTC
GCN Circular Query
Notices | VOE
0.000000000316754584221 per 100.04 years 1442856713.91
S250925gx BBH (97%), Terrestrial (3%) Yes 1442856458.14Sept. 25, 2025
17:27:20 UTC
GCN Circular Query
Notices | VOE
0.000000001536460000001 per 20.624 years 1442856458.14
S250925gg BBH (98%), Terrestrial (2%) Yes 1442850313.77Sept. 25, 2025
15:44:55 UTC
GCN Circular Query
Notices | VOE
0.000000011839870000001 per 2.6764 years 1442850313.77
S250925gc BBH (>99%) Yes 1442849546.13Sept. 25, 2025
15:32:08 UTC
GCN Circular Query
Notices | VOE
0.000000000000001776271 per 1.784e+07 years 1442849546.13
S250925fz NSBH (>99%) Yes 1442848521.81Sept. 25, 2025
15:15:03 UTC
GCN Circular Query
Notices | VOE
0.000000000004828154001 per 6563.2 years 1442848521.81