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 O4b.
- Less-significant events are not shown by default. Press "Show All Public Events" to show significant and less-significant events.
O4b Significant Detection Candidates: 105 (114 Total - 9 Retracted)
O4b Low Significance Detection Candidates: 1634 (Total)
Show All Public Events
| Event ID | Possible Source (Probability) | Significant | UTC | GCN | Location | FAR | Comments | GPS | S250119cv | BBH (>99%) | Yes |
1421348576.32Jan. 19, 2025 19:02:38 UTC |
GCN Circular Query Notices | VOE |
|
0.000000000000000000041 per 7.9146e+11 years | 1421348576.32 | S250119ag | BBH (>99%) | Yes |
1421290316.78Jan. 19, 2025 02:51:38 UTC |
GCN Circular Query Notices | VOE |
|
0.000000000000334894141 per 94621 years | 1421290316.78 | S250118dp | BBH (>99%) | Yes |
1421255141.22Jan. 18, 2025 17:05:23 UTC |
GCN Circular Query Notices | VOE |
|
0.000000000000000000001 per 5.7028e+16 years | 1421255141.22 | S250118az | BBH (99%) | Yes |
1421215100.47Jan. 18, 2025 05:58:02 UTC |
GCN Circular Query Notices | VOE |
|
0.000000009769726827631 per 3.2435 years | 1421215100.47 | S250118t | BBH (>99%) | Yes |
1421202763.94Jan. 18, 2025 02:32:25 UTC |
GCN Circular Query Notices | VOE |
|
0.000000000397639303861 per 79.691 years | 1421202763.94 | S250114ax | BBH (>99%) | Yes |
1420878141.22Jan. 14, 2025 08:22:03 UTC |
GCN Circular Query Notices | VOE |
|
0.000000000000000000001 per 7.7059e+18 years | 1420878141.22 | S250109bi | BBH (98%), Terrestrial (2%) | Yes |
1420443970.38Jan. 9, 2025 07:45:52 UTC |
GCN Circular Query Notices | VOE |
|
0.000000020496594866901 per 1.546 years | 1420443970.38 | S250109f | BBH (>99%) | Yes |
1420419959.48Jan. 9, 2025 01:05:41 UTC |
GCN Circular Query Notices | VOE |
|
0.000000000002920882641 per 10849 years | 1420419959.48 |
|---|---|---|---|---|---|---|---|---|
| S250108ha | Terrestrial (>99%) | Yes |
1420403447.32Jan. 8, 2025 20:30:29 UTC |
GCN Circular Query Notices | VOE |
|
0.000131197531503650704140.3 per year | RETRACTED ** This low-significance GW trigger was reported because the RAVEN pipeline found that it was coincident in time with Fermi/GBM trigger 758061038/250108855. However, that Fermi/GBM trigger ultimately was classified as a non-GRB (https://gcn.nasa.gov/circulars/38857, https://gcn.gsfc.nasa.gov/other/758061038.fermi). The GW trigger is not significant on its own, so a retraction Circular was issued (https://gcn.nasa.gov/circulars/38856). |
1420403447.32 | S250108eo | BBH (>99%) | Yes |
1420384959.70Jan. 8, 2025 15:22:21 UTC |
GCN Circular Query Notices | VOE |
|
0.000000000017628337801 per 1797.6 years | 1420384959.70 | S250104v | BBH (>99%) | Yes |
1419990700.33Jan. 4, 2025 01:51:22 UTC |
GCN Circular Query Notices | VOE |
|
0.000000000000952607171 per 33265 years | 1419990700.33 | S250101k | BBH (88%), NSBH (8%), Terrestrial (4%) | Yes |
1419729143.05Jan. 1, 2025 01:12:05 UTC |
GCN Circular Query Notices | VOE |
|
0.000000055694012284551.7576 per year | 1419729143.05 | S241231bg | BBH (>99%) | Yes |
1419658911.61Dec. 31, 2024 05:41:33 UTC |
GCN Circular Query Notices | VOE |
|
0.000000000316754584221 per 100.04 years | 1419658911.61 | S241230ev | BBH (97%), Terrestrial (2%), NSBH (1%) | Yes |
1419636996.07Dec. 30, 2024 23:36:18 UTC |
GCN Circular Query Notices | VOE |
|
0.000000021968256589861 per 1.4424 years | 1419636996.07 | S241230bd | BBH (>99%) | Yes |
1419583522.54Dec. 30, 2024 08:45:04 UTC |
GCN Circular Query Notices | VOE |
|
0.000000000000062139701 per 5.0995e+05 years | 1419583522.54 |
