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: 1659 (1659 Total - 0 Retracted)
O4c Low Significance Detection Candidates: 771 (Total)
Show All Public Events
| Event ID | Possible Source (Probability) | Significant | UTC | GCN | Location | FAR | Comments | GPS | S250923gr | BBH (>99%) | Yes |
1442693898.03Sept. 23, 2025 20:18:00 UTC |
GCN Circular Query Notices | VOE |
|
0.000000001829788000001 per 17.318 years | 1442693898.03 | S250923gp | BBH (>99%) | Yes |
1442693386.17Sept. 23, 2025 20:09:28 UTC |
GCN Circular Query Notices | VOE |
|
0.000000000234028800001 per 135.4 years | 1442693386.17 | S250923gg | BBH (>99%) | Yes |
1442690313.98Sept. 23, 2025 19:18:15 UTC |
GCN Circular Query Notices | VOE |
|
0.000000000064019000001 per 494.98 years | 1442690313.98 | S250923gf | Yes |
1442690074.06Sept. 23, 2025 19:14:16 UTC |
GCN Circular Query Notices | VOE |
|
0.000000000387686000001 per 81.736 years | 1442690074.06 | S250923gc | BBH (99%), Terrestrial (1%) | Yes |
1442688010.02Sept. 23, 2025 18:39:52 UTC |
GCN Circular Query Notices | VOE |
|
0.000000006144283000001 per 5.1573 years | 1442688010.02 | S250923ft | Yes |
1442686242.06Sept. 23, 2025 18:10:24 UTC |
GCN Circular Query Notices | VOE |
|
0.000000000152648000001 per 207.59 years | 1442686242.06 | S250923fq | BBH (>99%) | Yes |
1442684937.77Sept. 23, 2025 17:48:39 UTC |
GCN Circular Query Notices | VOE |
|
0.000000000000000000041 per 7.9146e+11 years | 1442684937.77 | S250923fm | BNS (63%), NSBH (37%) | Yes |
1442673289.97Sept. 23, 2025 14:34:31 UTC |
GCN Circular Query Notices | VOE |
|
0.000000000001050904001 per 30153 years | 1442673289.97 | S250923fj | BBH (>99%) | Yes |
1442672522.21Sept. 23, 2025 14:21:44 UTC |
GCN Circular Query Notices | VOE |
|
0.000000000273064100001 per 116.05 years | 1442672522.21 | S250923fg | Terrestrial (79%), NSBH (16%), BNS (5%) | Yes |
1442671497.87Sept. 23, 2025 14:04:39 UTC |
GCN Circular Query Notices | VOE |
|
0.000000037739680000001.191 per year | 1442671497.87 | S250923fc | BBH (>99%) | Yes |
1442670217.91Sept. 23, 2025 13:43:19 UTC |
GCN Circular Query Notices | VOE |
|
0.000000000096529870001 per 328.27 years | 1442670217.91 | S250923fa | BBH (84%), NSBH (15%), Terrestrial (1%) | Yes |
1442669193.99Sept. 23, 2025 13:26:15 UTC |
GCN Circular Query Notices | VOE |
|
0.000000001252583000001 per 25.298 years | 1442669193.99 | S250923eu | BBH (>99%) | Yes |
1442668426.12Sept. 23, 2025 13:13:28 UTC |
GCN Circular Query Notices | VOE |
|
0.000000000000000052701 per 6.0129e+08 years | 1442668426.12 | S250923em | NSBH (87%), BNS (9%), Terrestrial (4%) | Yes |
1442661770.23Sept. 23, 2025 11:22:32 UTC |
GCN Circular Query Notices | VOE |
|
0.000000000316754584221 per 100.04 years | 1442661770.23 | S250923ek | BBH (>99%) | Yes |
1442660746.00Sept. 23, 2025 11:05:27 UTC |
GCN Circular Query Notices | VOE |
|
0.000000000000086801741 per 3.6506e+05 years | 1442660746.00 |
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