Astrophysics (Index)About

black hole binary

(BHB, BBH, binary black hole)
(two black holes co-orbiting)

A black hole binary (or BHB or binary black hole or BBH) is two black holes co-orbiting. They could be the remnants of binary stars, or could be two supermassive black holes from a galaxy merger (a binary SMBH). A source of detectable gravitational waves is a binary black hole whose orbit has decayed to the point that the two merge (a black hole merger).

The term black hole binary (or BHB) is also used differently: to specifically mean a binary system in which at least one of the objects is a black hole, the other of which might be something else (main sequence star, white dwarf, neutron star, etc.).

(astrophysics,gravity,binary star type)
Further reading:

Referenced by pages:
black hole merger
binary SMBH (BSMBH)
supermassive black hole (SMBH)