Efficient merger of Binary Supermassive Black Holes in Non-Axisymmetric Galaxies

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Title: Efficient merger of Binary Supermassive Black Holes in Non-Axisymmetric Galaxies
Author: Berczik, Peter; Merritt, David; Spurzem, Rainer; Bischof, Hans-Peter
Abstract: Binary supermassive black holes form naturally in galaxy mergers, but their long-termevolution is uncertain. In spherical galaxies, N-body simulations show that binary evolution stalls at separations much too large for significant emission of gravitational waves (the “final parsec problem”). Here, we follow the long-term evolution of a massive binary in more realistic, triaxial and rotating galaxy models. We find that the binary does not stall. The binary hardening rates that we observe are sufficient to allow complete coalescence of binary SBHs in 10 Gyr or less, even in the absence of collisional loss-cone refilling or gas-dynamical torques, thus providing a potential solution to the final parsec problem.
Description: Also archived in: arXiv:astro-ph/0601698 v1 Jan 30 2006
Record URI: http://hdl.handle.net/1850/7503
Date: 2006-05-01

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