GW231127_165300
Gravitational-wave source · GWTC-4.1
A black hole of about 71 solar masses, formed on 2023-11-27 when two black holes of roughly 45 and 28 solar masses spiralled together 14.7 billion light-years away. LIGO and Virgo felt the collision as ripples in spacetime.
Computed render71.0 ☉
mass (the Sun = 1)
210 km
event-horizon radius (computed)
14.7 billion ly
from Earth
45+28 ☉
the two that merged
The two black holes that merged were about 45 (33–63) and 28 (16–41) solar masses. The remnant is 71 (57–92) solar masses. Values in parentheses are the 90% credible ranges from LIGO, Virgo and KAGRA (GWTC).
Its event horizon, the edge past which nothing returns, spans about 210 km in radius. The waves we detected had been travelling for 14.7 billion years before they reached us.
Black holes of similar mass
GW250118_023225Gravitational-wave source71.0 ☉GW230709_122727Gravitational-wave source71.0 ☉GW200128_022011Gravitational-wave source71.0 ☉GW240104_164932Gravitational-wave source70.7 ☉GW190421_213856Gravitational-wave source70.5 ☉GW231226_101520Gravitational-wave source71.6 ☉
Source: Gravitational-Wave Open Science Center (GWTC-4.1), LIGO Virgo KAGRA. CC BY 4.0. See data & analysis for full sourcing.