ConfirmedBinary Black Hole
GW190731_140936
Observed Jul 31, 2019, 2:09 PM UTC
- Primary
- 41.8 M☉
- Secondary
- 29 M☉
- Remnant
- 67.4 M☉
- Release
- GWTC-2.1-confident
Acquiring mission data
Apex AndromedaApex AndromedaAcquiring mission data
Apex Andromeda · GWOSC population
Confident GWTC events with at least one mass-qualified black-hole component. Detection confidence and component classification remain separate claims.
Both lower mass bounds above 3 M☉ classify a binary-black-hole event. A secondary interval below 3 M☉ classifies a black-hole–neutron-star event; intervals crossing the boundary remain candidates. Binary-neutron-star-only events are excluded.
Separate event population
Preferred cumulative GWTC releases are refreshed from the official GWOSC event API.
Observed Jul 31, 2019, 2:09 PM UTC
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