#S250628am
The first #GravitationalWave candidate of O4c #S250628am

If real, the source is probably a binary black hole

False alarm rate 1 in 1.9×10^6 yr
GraceDB gracedb.ligo.org/superevents/...
GCN gcn.nasa.gov/circulars/40...
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June 28, 2025 at 8:03 PM