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: 219 (245 Total - 26 Retracted)
O4 Low Significance Detection Candidates: 4281 (Total)
Show All Public Events
| Event ID | Possible Source (Probability) | Significant | UTC | GCN | Location | FAR | Comments | GPS | S250802dn | BBH (93%), Terrestrial (7%) | Yes |
1438201530.02Aug. 2, 2025 20:25:12 UTC |
GCN Circular Query Notices | VOE |
|
0.000000054941010000001.7338 per year | 1438201530.02 | S250727dc | BBH (>99%) | Yes |
1437681726.46July 27, 2025 20:01:48 UTC |
GCN Circular Query Notices | VOE |
|
0.000000000000000001121 per 2.8303e+10 years | 1437681726.46 | S250727cl | BBH (>99%) | Yes |
1437674627.65July 27, 2025 18:03:29 UTC |
GCN Circular Query Notices | VOE |
|
0.000000000000000000041 per 7.9146e+11 years | 1437674627.65 | S250726ak | BBH (>99%) | Yes |
1437553713.37July 26, 2025 08:28:15 UTC |
GCN Circular Query Notices | VOE |
|
0.000000000004675774001 per 6777.1 years | 1437553713.37 | S250725l | BBH (99%), Terrestrial (1%) | Yes |
1437452468.94July 25, 2025 04:20:50 UTC |
GCN Circular Query Notices | VOE |
|
0.000000029774930917091 per 1.0643 years | 1437452468.94 | S250725j | BBH (>99%) | Yes |
1437451802.25July 25, 2025 04:09:44 UTC |
GCN Circular Query Notices | VOE |
|
0.000000000042556559491 per 744.61 years | 1437451802.25 |
|---|---|---|---|---|---|---|---|---|
| S250720j | Yes |
1437012926.46July 20, 2025 02:15:08 UTC |
GCN Circular Query Notices | VOE |
|
0.00003014051000000000951.16 per year | RETRACTED | 1437012926.46 | S250712cd | BBH (>99%) | Yes |
1436365550.33July 12, 2025 14:25:32 UTC |
GCN Circular Query Notices | VOE |
|
0.000000000026872820001 per 1179.2 years | 1436365550.33 | S250711q | BBH (>99%) | Yes |
1436239663.11July 11, 2025 03:27:25 UTC |
GCN Circular Query Notices | VOE |
|
0.000000001574476618301 per 20.126 years | 1436239663.11 | S250705cb | BBH (99%) | Yes |
1435768214.84July 5, 2025 16:29:56 UTC |
GCN Circular Query Notices | VOE |
|
0.000000000950263752671 per 33.347 years | 1435768214.84 | S250704ab | BBH (82%), NSBH (17%) | Yes |
1435638666.04July 4, 2025 04:30:48 UTC |
GCN Circular Query Notices | VOE |
|
0.000000000316754584221 per 100.04 years | 1435638666.04 | S250702n | BBH (99%), Terrestrial (1%) | Yes |
1435498338.38July 2, 2025 13:32:00 UTC |
GCN Circular Query Notices | VOE |
|
0.000000017471179567111 per 1.8137 years | 1435498338.38 | S250701bq | BBH (>99%) | Yes |
1435447084.93July 1, 2025 23:17:46 UTC |
GCN Circular Query Notices | VOE |
|
0.000000000000000042541 per 7.4498e+08 years | 1435447084.93 | S250701bp | BBH (>99%) | Yes |
1435437298.86July 1, 2025 20:34:40 UTC |
GCN Circular Query Notices | VOE |
|
0.000000000000000031321 per 1.0116e+09 years | 1435437298.86 | S250629bs | BBH (94%), Terrestrial (6%) | Yes |
1435234402.38June 29, 2025 12:13:04 UTC |
GCN Circular Query Notices | VOE |
|
0.000000043286170000001.366 per year | 1435234402.38 |
