Local Supermassive Black Holes, Relics of Active Galactic Nuclei and the X-ray Background

28 Nov 2003 A. Marconi G. Risaliti R. Gilli L. K. Hunt R. Maiolino M. Salvati

We quantify the importance of mass accretion during AGN phases in the growth of supermassive black holes (BH) by comparing the mass function of black holes in the local universe with that expected from AGN relics, which are black holes grown entirely with mass accretion during AGN phases. The local BH mass function (BHMF) is estimated by applying the well-known correlations between BH mass, bulge luminosity and stellar velocity dispersion to galaxy luminosity and velocity functions... (read more)

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