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: 48 (54 Total - 6 Retracted)
O4c Low Significance Detection Candidates: 1268 (Total)
Show All Public Events
| Event ID | Possible Source (Probability) | Significant | UTC | GCN | Location | FAR | Comments | GPS | S250908y | BBH (>99%) | Yes |
1441377286.96Sept. 8, 2025 14:34:28 UTC |
GCN Circular Query Notices | VOE |
|
0.000000000114968211921 per 275.62 years | 1441377286.96 | S250906ca | BBH (>99%) | Yes |
1441196657.10Sept. 6, 2025 12:23:59 UTC |
GCN Circular Query Notices | VOE |
|
0.000000000000109702061 per 2.8886e+05 years | 1441196657.10 | S250904cv | BBH (>99%) | Yes |
1441029010.53Sept. 4, 2025 13:49:52 UTC |
GCN Circular Query Notices | VOE |
|
0.000000000316754584221 per 100.04 years | 1441029010.53 | S250904br | BBH (>99%) | Yes |
1441016546.02Sept. 4, 2025 10:22:08 UTC |
GCN Circular Query Notices | VOE |
|
0.000000000316754584221 per 100.04 years | 1441016546.02 | S250904ae | BBH (>99%) | Yes |
1440992005.67Sept. 4, 2025 03:33:07 UTC |
GCN Circular Query Notices | VOE |
|
0.000000000316754584221 per 100.04 years | 1440992005.67 | S250901cb | BBH (>99%) | Yes |
1440788399.97Sept. 1, 2025 18:59:41 UTC |
GCN Circular Query Notices | VOE |
|
0.000000000000031926461 per 9.9253e+05 years | 1440788399.97 | S250830bp | BBH (>99%) | Yes |
1440584676.85Aug. 30, 2025 10:24:18 UTC |
GCN Circular Query Notices | VOE |
|
0.000000000316754584221 per 100.04 years | 1440584676.85 | S250830m | BBH (98%), Terrestrial (2%) | Yes |
1440559647.03Aug. 30, 2025 03:27:09 UTC |
GCN Circular Query Notices | VOE |
|
0.000000011898580000001 per 2.6632 years | 1440559647.03 | S250827fo | BBH (>99%) | Yes |
1440370198.31Aug. 27, 2025 22:49:40 UTC |
GCN Circular Query Notices | VOE |
|
0.000000000022551820001 per 1405.1 years | 1440370198.31 | S250827l | BBH (>99%) | Yes |
1440293295.54Aug. 27, 2025 01:27:57 UTC |
GCN Circular Query Notices | VOE |
|
0.000000000316754584221 per 100.04 years | 1440293295.54 | S250818t | BBH (>99%) | Yes |
1439518156.39Aug. 18, 2025 02:08:58 UTC |
GCN Circular Query Notices | VOE |
|
0.000000000017160280001 per 1846.6 years | 1439518156.39 | S250818k | Terrestrial (71%), BNS (29%) | Yes |
1439515224.03Aug. 18, 2025 01:20:06 UTC |
GCN Circular Query Notices | VOE |
|
0.000000068102235608242.1491 per year | 1439515224.03 | S250814bg | Terrestrial (99%) | Yes |
1439192123.59Aug. 14, 2025 07:35:05 UTC |
GCN Circular Query Notices | VOE |
|
0.000119702414178215603777.5 per year | 1439192123.59 | S250813k | BBH (>99%) | Yes |
1439086338.44Aug. 13, 2025 02:12:00 UTC |
GCN Circular Query Notices | VOE |
|
0.000000000126053903431 per 251.39 years | 1439086338.44 | S250810ck | BBH (>99%) | Yes |
1438871055.34Aug. 10, 2025 14:23:57 UTC |
GCN Circular Query Notices | VOE |
|
0.000000000000000000051 per 5.891e+11 years | 1438871055.34 |
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