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GW191105_143521 | Gravitational-wave mergers | Apex Andromeda | Apex Andromeda

Black Holes/Gravitational-wave mergers/GW191105_143521

ConfirmedBinary Black Hole

GWOSC compact-binary event

GW191105_143521

Both component-mass lower bounds exceed 3 solar masses

Primary mass10.7 M☉

Secondary mass7.7 M☉

ObservedNov 5, 2019

Event identity

Classification and release

ID: gwtc:GW191105_143521
Event name: GW191105_143521
Classification: Binary Black Hole
Composition status: Confirmed
Confidence boundary: Both component-mass lower bounds exceed 3 solar masses
Catalog: GWTC-3-confident
Preferred event version: v1
Observed at: Tuesday, November 5, 2019 at 2:35:21 PM UTC UTC
GPS time: 1,256,999,739.9

Source-frame posterior

Component and remnant masses

Primary mass: 10.7 (-1.6, +3.7) M☉
Secondary mass: 7.7 (-1.9, +1.4) M☉
Remnant mass: 17.6 (-1.2, +2.1) M☉
Effective spin: -0.02
Network SNR: 9.7

Propagation

Distance and statistical context

Luminosity distance: 1,150 (-480, +430) Mpc
Redshift: 0.23
Astrophysical probability: 0.99
False-alarm rate: 0.012

Provenance

Official source record

GWOSC · GWTC-3-confident

GW191105_143521

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

JSON record GWOSC event page