GraceDB | LVK Public Alerts
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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:
254
(283 Total - 29 Retracted)
O4 Low Significance Detection Candidates:
5136
(Total)
Show All Public Events
Page 1 of 19.
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Event ID
Possible Source (Probability)
Significant
UTC
GCN
Location
FAR
Comments
GPS
S251117dq
BBH (>99%)
Yes
1447450731.12
Nov. 17, 2025
21:38:33 UTC
GCN Circular Query
Notices
VOE
0.00000000000000586764
1 per 5.4005e+06 years
1447450731.12
S251116en
BBH (>99%)
Yes
1447370559.76
Nov. 16, 2025
23:22:21 UTC
GCN Circular Query
Notices
VOE
0.00000000000130557381
1 per 24271 years
1447370559.76
S251112cm
Yes
1446995943.36
Nov. 12, 2025
15:18:45 UTC
GCN Circular Query
Notices
VOE
0.00000000510290400000
1 per 6.2098 years
1446995943.36
S251108fi
BBH (>99%)
Yes
1446664426.51
Nov. 8, 2025
19:13:28 UTC
GCN Circular Query
Notices
VOE
0.00000000000131344475
1 per 24126 years
1446664426.51
S251108dn
BBH (>99%)
Yes
1446633181.58
Nov. 8, 2025
10:32:43 UTC
GCN Circular Query
Notices
VOE
0.00000000000000000945
1 per 3.3545e+09 years
1446633181.58
S251105aj
BBH (>99%)
Yes
1446382777.96
Nov. 5, 2025
12:59:19 UTC
GCN Circular Query
Notices
VOE
0.00000000000080417820
1 per 39404 years
1446382777.96
S251103f
BBH (>99%)
Yes
1446242744.54
Nov. 3, 2025
22:05:26 UTC
GCN Circular Query
Notices
VOE
0.00000000000004151533
1 per 7.6329e+05 years
1446242744.54
S251031cq
BBH (>99%)
Yes
1445972373.91
Oct. 31, 2025
18:59:15 UTC
GCN Circular Query
Notices
VOE
0.00000000070061567229
1 per 45.229 years
1445972373.91
S251026bn
BBH (>99%)
Yes
1445548583.30
Oct. 26, 2025
21:16:05 UTC
GCN Circular Query
Notices
VOE
0.00000000000483037697
1 per 6560.2 years
1445548583.30
S251021u
BBH (>99%)
Yes
1445052153.18
Oct. 21, 2025
03:22:15 UTC
GCN Circular Query
Notices
VOE
0.00000000221728208957
1 per 14.291 years
1445052153.18
S251018bi
BBH (>99%)
Yes
1444836365.02
Oct. 18, 2025
15:25:47 UTC
GCN Circular Query
Notices
VOE
0.00000000031675458422
1 per 100.04 years
1444836365.02
S251017di
Terrestrial (98%), BNS (2%)
Yes
1444770508.11
Oct. 17, 2025
21:08:10 UTC
GCN Circular Query
Notices
VOE
0.00000007041725023589
2.2222 per year
RETRACTED
1444770508.11
S251014cn
BBH (>99%)
Yes
1444476821.37
Oct. 14, 2025
11:33:23 UTC
GCN Circular Query
Notices
VOE
0.00000000031675458422
1 per 100.04 years
1444476821.37
S251013x
BBH (99%), Terrestrial (1%)
Yes
1444358672.28
Oct. 13, 2025
02:44:14 UTC
GCN Circular Query
Notices
VOE
0.00000001484145413923
1 per 2.1351 years
1444358672.28
S251006dd
BBH (>99%)
Yes
1443829055.98
Oct. 6, 2025
23:37:17 UTC
GCN Circular Query
Notices
VOE
0.00000000000000054159
1 per 5.851e+07 years
1443829055.98