Modelling the merging history of Binary SMBHs in Hierarchical Models of Galaxy Formation
Authors: Volonteri, Marta; Haardt, Francesco; Madau, Piero
Source: Astrophysics and Space Science, Volume 281, Numbers 1-2, July 2002 , pp. 501-504(4)
Abstract:We present a model describing the evolution of a Super Massive Black Holes (SMBHs) population within the framework of hierarchical models of galaxy formation. The occurrence of SMBHs binaries at different redshifts and the influence of the interacting SMBHS on the host galaxies are studied by means of Montecarlo realizations of halo merging histories, coupled with a semi-analytical treatment of the interactions between the systems. We find that the main parameters governing the coalescence timescale, and hence the fraction of binary systems, are the initial mass and the accretion history of the SMBHs.
Document Type: Research Article
Publication date: July 2002