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: 251 (280 Total - 29 Retracted)
O4 Low Significance Detection Candidates: 5085 (Total)
Show All Public Events
| Event ID | Possible Source (Probability) | Significant | UTC | GCN | Location | FAR | Comments | GPS | S251108fi | BBH (>99%) | Yes |
1446664426.51Nov. 8, 2025 19:13:28 UTC |
GCN Circular Query Notices | VOE |
|
0.000000000001313444751 per 24126 years | 1446664426.51 | S251108dn | BBH (>99%) | Yes |
1446633181.58Nov. 8, 2025 10:32:43 UTC |
GCN Circular Query Notices | VOE |
|
0.000000000000000009451 per 3.3545e+09 years | 1446633181.58 | S251105aj | BBH (>99%) | Yes |
1446382777.96Nov. 5, 2025 12:59:19 UTC |
GCN Circular Query Notices | VOE |
|
0.000000000000804178201 per 39404 years | 1446382777.96 | S251103f | BBH (>99%) | Yes |
1446242744.54Nov. 3, 2025 22:05:26 UTC |
GCN Circular Query Notices | VOE |
|
0.000000000000041515331 per 7.6329e+05 years | 1446242744.54 | S251031cq | BBH (>99%) | Yes |
1445972373.91Oct. 31, 2025 18:59:15 UTC |
GCN Circular Query Notices | VOE |
|
0.000000000700615672291 per 45.229 years | 1445972373.91 | S251026bn | BBH (>99%) | Yes |
1445548583.30Oct. 26, 2025 21:16:05 UTC |
GCN Circular Query Notices | VOE |
|
0.000000000004830376971 per 6560.2 years | 1445548583.30 | S251021u | BBH (>99%) | Yes |
1445052153.18Oct. 21, 2025 03:22:15 UTC |
GCN Circular Query Notices | VOE |
|
0.000000002217282089571 per 14.291 years | 1445052153.18 | S251018bi | BBH (>99%) | Yes |
1444836365.02Oct. 18, 2025 15:25:47 UTC |
GCN Circular Query Notices | VOE |
|
0.000000000316754584221 per 100.04 years | 1444836365.02 |
|---|---|---|---|---|---|---|---|---|
| S251017di | Terrestrial (98%), BNS (2%) | Yes |
1444770508.11Oct. 17, 2025 21:08:10 UTC |
GCN Circular Query Notices | VOE |
|
0.000000070417250235892.2222 per year | RETRACTED | 1444770508.11 | S251014cn | BBH (>99%) | Yes |
1444476821.37Oct. 14, 2025 11:33:23 UTC |
GCN Circular Query Notices | VOE |
|
0.000000000316754584221 per 100.04 years | 1444476821.37 | S251013x | BBH (99%), Terrestrial (1%) | Yes |
1444358672.28Oct. 13, 2025 02:44:14 UTC |
GCN Circular Query Notices | VOE |
|
0.000000014841454139231 per 2.1351 years | 1444358672.28 | S251006dd | BBH (>99%) | Yes |
1443829055.98Oct. 6, 2025 23:37:17 UTC |
GCN Circular Query Notices | VOE |
|
0.000000000000000541591 per 5.851e+07 years | 1443829055.98 |
| S251003at | BNS (72%), Terrestrial (28%) | Yes |
1443533032.60Oct. 3, 2025 13:23:34 UTC |
GCN Circular Query Notices | VOE |
|
0.000000081750286304242.5798 per year | RETRACTED | 1443533032.60 | S250929c | BBH (98%), Terrestrial (2%) | Yes |
1443140870.38Sept. 29, 2025 00:27:32 UTC |
GCN Circular Query Notices | VOE |
|
0.000000025282406335801 per 1.2534 years | 1443140870.38 | S250927cy | BBH (96%), Terrestrial (4%) | Yes |
1443029459.68Sept. 27, 2025 17:30:41 UTC |
GCN Circular Query Notices | VOE |
|
0.000000053133492337501.6768 per year | 1443029459.68 |
