Astrophysics (Index)About

hypercompact stellar system

(SMBH with no galaxy but has a tight stellar cluster)

A hypercompact stellar system (HCSS) is a theoretical astronomical body not within a galaxy, consisting of a supermassive black hole surrounded by a dense cluster of stars. Essentially, it is a compact stellar nucleus that has been kicked out. A black hole merger can give the resulting black hole a substantial push and for a binary SMBH, the resulting velocity might exceed the escape velocity of the galaxy. At least one candidate HCSS has been observed.

(black holes,stars,theory)
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