EFFICIENT MERGER OF BINARY SUPERMASSIVE BLACK HOLES IN MERGING GALAXIES

摘要: In spherical galaxies, binary supermassive black holes (SMBHs) have difficulty reaching sub-parsec separations due to depletion of stars on orbits that intersect the massive binary—the "final parsec problem." Galaxies form via major mergers are substantially non-spherical, and it has been argued centrophilic in triaxial galaxies might provide at a high enough rate avoid stalling. Here we test idea by carrying out fully self-consistent merger simulations containing central SMBHs. We find hardening rates binaries indeed much higher than models essentially independent number particles used simulations. Binary eccentricities remain throughout Our results constitute stellar-dynamical solution final problem imply potentially events for low-frequency gravitational wave detectors like LISA.