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 | S251027ii | BBH (>99%) | Yes |
1445628938.11Oct. 27, 2025 19:35:20 UTC |
GCN Circular Query Notices | VOE |
|
0.000000000316754584221 per 100.04 years | 1445628938.11 | S251027ih | Yes |
1445628449.35Oct. 27, 2025 19:27:11 UTC |
GCN Circular Query Notices | VOE |
|
0.000000000129229000001 per 245.21 years | 1445628449.35 | S251027hy | Terrestrial (76%), BNS (18%), NSBH (6%) | Yes |
1445626377.77Oct. 27, 2025 18:52:39 UTC |
GCN Circular Query Notices | VOE |
|
0.000000031870810000001.0058 per year | 1445626377.77 | S251027hs | BBH (98%), Terrestrial (2%) | Yes |
1445624330.04Oct. 27, 2025 18:18:32 UTC |
GCN Circular Query Notices | VOE |
|
0.000000000576171000001 per 54.998 years | 1445624330.04 | S251027hr | BBH (>99%) | Yes |
1445623305.88Oct. 27, 2025 18:01:27 UTC |
GCN Circular Query Notices | VOE |
|
0.000000038010550106931.1995 per year | 1445623305.88 | S251027gv | NSBH (49%), BNS (47%), Terrestrial (4%) | Yes |
1445617929.94Oct. 27, 2025 16:31:51 UTC |
GCN Circular Query Notices | VOE |
|
0.000000000316754584221 per 100.04 years | 1445617929.94 | S251027gu | BBH (>99%) | Yes |
1445617673.78Oct. 27, 2025 16:27:35 UTC |
GCN Circular Query Notices | VOE |
|
0.000000000000000000041 per 7.9146e+11 years | 1445617673.78 | S251027gs | BBH (>99%) | Yes |
1445616930.83Oct. 27, 2025 16:15:12 UTC |
GCN Circular Query Notices | VOE |
|
0.000000000002008519001 per 15777 years | 1445616930.83 | S251027gr | BBH (91%), Terrestrial (9%) | Yes |
1445616905.96Oct. 27, 2025 16:14:47 UTC |
GCN Circular Query Notices | VOE |
|
0.000000014887465458551 per 2.1285 years | 1445616905.96 | S251027gk | NSBH (78%), BNS (22%) | Yes |
1445615626.14Oct. 27, 2025 15:53:28 UTC |
GCN Circular Query Notices | VOE |
|
0.000000000000000000001 per 2.185e+13 years | 1445615626.14 | S251027ge | BBH (98%), Terrestrial (2%) | Yes |
1445613577.79Oct. 27, 2025 15:19:19 UTC |
GCN Circular Query Notices | VOE |
|
0.000000013028290000001 per 2.4323 years | 1445613577.79 | S251027gc | BBH (97%), Terrestrial (3%) | Yes |
1445612553.88Oct. 27, 2025 15:02:15 UTC |
GCN Circular Query Notices | VOE |
|
0.000000012036674200531 per 2.6326 years | 1445612553.88 | S251027ga | Yes |
1445612042.06Oct. 27, 2025 14:53:44 UTC |
GCN Circular Query Notices | VOE |
|
0.000000000000000078151 per 4.0547e+08 years | 1445612042.06 | S251027fu | Yes |
1445609756.91Oct. 27, 2025 14:15:38 UTC |
GCN Circular Query Notices | VOE |
|
0.000000000129229000001 per 245.21 years | 1445609756.91 | S251027fr | NSBH (48%), Terrestrial (40%), BNS (13%) | Yes |
1445608969.84Oct. 27, 2025 14:02:31 UTC |
GCN Circular Query Notices | VOE |
|
0.000000006335091684491 per 5.002 years | 1445608969.84 |
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