GW231028_153006
Gravitational-wave source · GWTC-4.1
A black hole of about 144 solar masses, formed on 2023-10-28 when two black holes of roughly 94 and 59 solar masses spiralled together 13.7 billion light-years away. LIGO and Virgo felt the collision as ripples in spacetime.
Computed render144 ☉
mass (the Sun = 1)
425 km
event-horizon radius (computed)
13.7 billion ly
from Earth
94+59 ☉
the two that merged
The two black holes that merged were about 94 (75–126) and 59 (35–80) solar masses. The remnant is 144 (131–171) 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 425 km in radius. The waves we detected had been travelling for 13.7 billion years before they reached us.
Black holes of similar mass
GW200220_061928Gravitational-wave source141 ☉GW190521Gravitational-wave source147 ☉GW230704_212616Gravitational-wave source132 ☉GW231005_021030Gravitational-wave source127 ☉GW190426_190642Gravitational-wave source173 ☉GW230922_040658Gravitational-wave source119 ☉
Source: Gravitational-Wave Open Science Center (GWTC-4.1), LIGO Virgo KAGRA. CC BY 4.0. See data & analysis for full sourcing.