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GW231014_040532 | Gravitational-wave mergers | Apex Andromeda | Apex Andromeda

Black Holes/Gravitational-wave mergers/GW231014_040532

ConfirmedBinary Black Hole

GWOSC compact-binary event

GW231014_040532

Both component-mass lower bounds exceed 3 solar masses

Primary mass20.6 M☉

Secondary mass14.7 M☉

ObservedOct 14, 2023

Event identity

Classification and release

ID: gwtc:GW231014_040532
Event name: GW231014_040532
Classification: Binary Black Hole
Composition status: Confirmed
Confidence boundary: Both component-mass lower bounds exceed 3 solar masses
Catalog: GWTC-4.1
Preferred event version: v2
Observed at: Saturday, October 14, 2023 at 4:05:33 AM UTC UTC
GPS time: 1,381,291,551

Source-frame posterior

Component and remnant masses

Primary mass: 20.6 (-4, +7.9) M☉
Secondary mass: 14.7 (-4.2, +3.8) M☉
Remnant mass: 33.8 (-4.4, +6.5) M☉
Effective spin: 0.18
Network SNR: 9

Propagation

Distance and statistical context

Luminosity distance: 2,300 (-1,200, +1,400) Mpc
Redshift: 0.42
Astrophysical probability: 0.98
False-alarm rate: 0.21

Provenance

Official source record

GWOSC · GWTC-4.1

GW231014_040532

Last synchronized 9/12/2026, 3:20:17 AM UTC.

JSON record GWOSC event page