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: 199 (223 Total - 24 Retracted)
O4 Low Significance Detection Candidates: 3608 (Total)
Show All Public Events
| Event ID | Possible Source (Probability) | Significant | UTC | GCN | Location | FAR | Comments | GPS | 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 | S250227e | BBH (52%), Terrestrial (48%) | Yes |
1424650383.47Feb. 27, 2025 00:12:45 UTC |
GCN Circular Query Notices | VOE |
|
0.000000000002594130761 per 12215 years | 1424650383.47 | S250226dl | BBH (>99%) | Yes |
1424645336.70Feb. 26, 2025 22:48:38 UTC |
GCN Circular Query Notices | VOE |
|
0.000000000001169184531 per 27103 years | 1424645336.70 | S250223dk | Terrestrial (92%), BBH (8%) | Yes |
1424347293.36Feb. 23, 2025 12:01:15 UTC |
GCN Circular Query Notices | VOE |
|
0.00001443192990183262455.44 per year | 1424347293.36 |
| S250221gb | BBH (98%), Terrestrial (2%) | Yes |
1424195651.81Feb. 21, 2025 17:53:53 UTC |
GCN Circular Query Notices | VOE |
|
0.000000007814327000001 per 4.0551 years | RETRACTED | 1424195651.81 |
| S250221eb | BBH (95%), Terrestrial (5%) | Yes |
1424167764.65Feb. 21, 2025 10:09:06 UTC |
GCN Circular Query Notices | VOE |
|
0.000000034614720000001.0924 per year | RETRACTED | 1424167764.65 | S250211be | BBH (99%), Terrestrial (1%) | Yes |
1423283761.15Feb. 11, 2025 04:35:43 UTC |
GCN Circular Query Notices | VOE |
|
0.000000017824013441601 per 1.7778 years | 1423283761.15 | S250211aa | BBH (>99%) | Yes |
1423275964.62Feb. 11, 2025 02:25:46 UTC |
GCN Circular Query Notices | VOE |
|
0.000000000000000004681 per 6.7779e+09 years | 1423275964.62 | S250208ad | BBH (>99%) | Yes |
1423021884.79Feb. 8, 2025 03:51:06 UTC |
GCN Circular Query Notices | VOE |
|
0.000000000374999107411 per 84.502 years | 1423021884.79 | S250207bg | BBH (>99%) | Yes |
1422964623.26Feb. 7, 2025 11:56:45 UTC |
GCN Circular Query Notices | VOE |
|
0.000000000000000000001 per 6.4428e+27 years | 1422964623.26 | S250206dm | NSBH (55%), BNS (37%), Terrestrial (8%) | Yes |
1422912348.44Feb. 6, 2025 21:25:30 UTC |
GCN Circular Query Notices | VOE |
|
0.000000001267018336901 per 25.01 years | 1422912348.44 | S250205ee | BBH (>99%) | Yes |
1422827553.88Feb. 5, 2025 21:52:15 UTC |
GCN Circular Query Notices | VOE |
|
0.000000001834753027981 per 17.271 years | 1422827553.88 | S250205bk | BBH (98%), NSBH (1%) | Yes |
1422786959.58Feb. 5, 2025 10:35:41 UTC |
GCN Circular Query Notices | VOE |
|
0.000000000950263752671 per 33.347 years | 1422786959.58 | S250204ax | BBH (>99%) | Yes |
1422683597.00Feb. 4, 2025 05:52:59 UTC |
GCN Circular Query Notices | VOE |
|
0.000000000316754584221 per 100.04 years | 1422683597.00 |
