Evolution of Supermassive Black-Hole Binaries

Details Evolution of Supermassive Black-Hole Binaries Evolution of Supermassive Black-Hole Binaries

Oct 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000aas...196.2916m&link_type=abstract

American Astronomical Society, 196th AAS Meeting, #29.16; Bulletin of the American Astronomical Society, Vol. 32, p.1282

Astronomy and Astrophysics

Astronomy

Scientific paper

Binary supermassive black holes are expected to form in galactic nuclei following galaxy mergers. We report large-scale N-body simulations using the Aarseth/Spurzem parallel code NBODY6++ of the formation and evolution of such binaries. Initial conditions are drawn from a tree-code simulation of the merger of two spherical galaxies with ρ ~ r-2 density cusps (Cruz & Merritt, AAS Poster). Once the two black holes form a bound pair at the center of the merged galaxies, the evolution is continued using NBODY6++ at much higher resolution. Its exact force calculations generate faithful binary dynamics until the onset of gravity wave-dominated dissipation. We discuss the binary hardening rate, the amplitude of the binary's wandering, and the evolution of the structure of the galactic stellar nucleus.

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