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: 1659 (1659 Total - 0 Retracted)
O4 Low Significance Detection Candidates: 771 (Total)
Show All Public Events
| Event ID | Possible Source (Probability) | Significant | UTC | GCN | Location | FAR | Comments | GPS | S250927cr | Terrestrial (49%), NSBH (47%), BBH (4%) | Yes |
1443012362.20Sept. 27, 2025 12:45:44 UTC |
GCN Circular Query Notices | VOE |
|
0.000000000316880878141 per 100 years | 1443012362.20 | S250927cj | Terrestrial (74%), NSBH (18%), BNS (9%) | Yes |
1443006986.25Sept. 27, 2025 11:16:08 UTC |
GCN Circular Query Notices | VOE |
|
0.000000024706857569501 per 1.2826 years | 1443006986.25 | S250927bu | BBH (98%), Terrestrial (2%) | Yes |
1442989577.83Sept. 27, 2025 06:25:59 UTC |
GCN Circular Query Notices | VOE |
|
0.000000009793931000001 per 3.2355 years | 1442989577.83 | S250927aw | Yes |
1442978843.20Sept. 27, 2025 03:27:05 UTC |
GCN Circular Query Notices | VOE |
|
0.000000000129229000001 per 245.21 years | 1442978843.20 | S250927av | BBH (55%), NSBH (44%) | Yes |
1442978826.22Sept. 27, 2025 03:26:48 UTC |
GCN Circular Query Notices | VOE |
|
0.000000000432944000001 per 73.192 years | 1442978826.22 | S250927at | Terrestrial (72%), NSBH (27%) | Yes |
1442978569.91Sept. 27, 2025 03:22:31 UTC |
GCN Circular Query Notices | VOE |
|
0.000000018371765885011 per 1.7248 years | 1442978569.91 | S250927aq | BBH (>99%) | Yes |
1442977545.80Sept. 27, 2025 03:05:27 UTC |
GCN Circular Query Notices | VOE |
|
0.000000046246169296761.4594 per year | 1442977545.80 | S250927ap | NSBH (52%), BBH (46%), Terrestrial (2%) | Yes |
1442977290.17Sept. 27, 2025 03:01:12 UTC |
GCN Circular Query Notices | VOE |
|
0.000000000316754584221 per 100.04 years | 1442977290.17 | S250927aj | BBH (76%), Terrestrial (24%) | Yes |
1442974498.36Sept. 27, 2025 02:14:40 UTC |
GCN Circular Query Notices | VOE |
|
0.000000012675800000001 per 2.4999 years | 1442974498.36 | S250927aa | BBH (98%), Terrestrial (2%) | Yes |
1442971913.95Sept. 27, 2025 01:31:35 UTC |
GCN Circular Query Notices | VOE |
|
0.000000014103240000001 per 2.2469 years | 1442971913.95 | S250927u | BBH (85%), NSBH (15%) | Yes |
1442970122.10Sept. 27, 2025 01:01:44 UTC |
GCN Circular Query Notices | VOE |
|
0.000000000001473517001 per 21505 years | 1442970122.10 | S250927q | Terrestrial (61%), NSBH (33%), BNS (6%) | Yes |
1442969353.95Sept. 27, 2025 00:48:55 UTC |
GCN Circular Query Notices | VOE |
|
0.000000014074930000001 per 2.2514 years | 1442969353.95 | S250927n | BBH (61%), NSBH (39%) | Yes |
1442968586.15Sept. 27, 2025 00:36:08 UTC |
GCN Circular Query Notices | VOE |
|
0.000000000000000000021 per 1.4654e+12 years | 1442968586.15 | S250927j | Yes |
1442968096.24Sept. 27, 2025 00:27:58 UTC |
GCN Circular Query Notices | VOE |
|
0.000000000152648000001 per 207.59 years | 1442968096.24 | S250927f | BBH (96%), Terrestrial (4%) | Yes |
1442967049.86Sept. 27, 2025 00:10:31 UTC |
GCN Circular Query Notices | VOE |
|
0.000000025172470000001 per 1.2588 years | 1442967049.86 |
|---|
