Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996mnras.278..186v&link_type=abstract
Monthly Notices of the Royal Astronomical Society, Volume 278, Issue 1, pp. 186-190.
Astronomy and Astrophysics
Astronomy
16
Accretion, Accretion Discs, Celestial Mechanics, Stellar Dynamics, Galaxies: Interactions, Galaxies: Nuclei
Scientific paper
We study the evolution of orbits of supermassive black holes in the nuclei of galaxies under the gravitational influence of the stars in the galaxy, as well as the cooling flow of gas into the black holes and their accretion discs. The number of supermassive black holes in the nucleus is increased by successive mergers of galaxies, while the number is decreased by mergers of black holes. We find that, typically, successive mergers create few black hole systems. We calculate the initial configuration of such systems, which allows one to estimate their further evolution. Many slingshot ejections of supermassive black holes result close to, or slightly above, the escape velocity from the galaxy.
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