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: 211 (236 Total - 25 Retracted)
O4 Low Significance Detection Candidates: 3966 (Total)
Show All Public Events
| Event ID | Possible Source (Probability) | Significant | UTC | GCN | Location | FAR | Comments | GPS | 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 | S250629ae | BBH (98%), Terrestrial (2%) | Yes |
1435211454.92June 29, 2025 05:50:36 UTC |
GCN Circular Query Notices | VOE |
|
0.000000032304482504121.0195 per year | 1435211454.92 | S250628am | BBH (>99%) | Yes |
1435170217.78June 28, 2025 18:23:19 UTC |
GCN Circular Query Notices | VOE |
|
0.000000000000016833991 per 1.8824e+06 years | 1435170217.78 | S250331o | BBH (>99%) | Yes |
1427420106.44March 31, 2025 01:34:48 UTC |
GCN Circular Query Notices | VOE |
|
0.000000000316754584221 per 100.04 years | 1427420106.44 | S250328ae | BBH (>99%) | Yes |
1427175645.42March 28, 2025 05:40:27 UTC |
GCN Circular Query Notices | VOE |
|
0.000000000316754584221 per 100.04 years | 1427175645.42 | S250326y | BBH (>99%) | Yes |
1426989264.15March 26, 2025 01:54:06 UTC |
GCN Circular Query Notices | VOE |
|
0.000000000003564115801 per 8890.9 years | 1426989264.15 | S250319bu | BBH (>99%) | Yes |
1426400754.48March 19, 2025 06:25:36 UTC |
GCN Circular Query Notices | VOE |
|
0.000000000468520517561 per 67.634 years | 1426400754.48 |
|---|---|---|---|---|---|---|---|---|
| S250306ej | Terrestrial (>99%) | Yes |
1425308462.77March 6, 2025 15:00:44 UTC |
GCN Circular Query Notices | VOE |
|
0.000000092710820000002.9257 per year | RETRACTED | 1425308462.77 | S250304cb | BBH (96%), Terrestrial (4%) | Yes |
1425104583.57March 4, 2025 06:22:45 UTC |
GCN Circular Query Notices | VOE |
|
0.000000056209291273861.7738 per year | 1425104583.57 |
| S250227y | Terrestrial (99%), BNS (1%) | Yes |
1424653363.74Feb. 27, 2025 01:02:25 UTC |
GCN Circular Query Notices | VOE |
|
0.000000041078670000001.2963 per year | RETRACTED | 1424653363.74 |
