Evolution of powerful AGN and the collapse of rich clusters.

摘要: The cosmological evolution of active galactic nuclei (AGN) may be described by a luminosity function which depends on redshift and the (stellar) or mass galaxy. Our mathematical expression for AGN is based “loss-cone filling” model fuelling central black holes in during galaxy mergers. We assume that containing massive were formed at z ≃ 3 subsequent mainly due to decrease merging rate among galaxies epoch cluster formation. radio (and optical) counts can reproduced if most evolves faster than smaller galaxies. At redshifts about 2.5 very similar pure space density luminous comparable rapid powerful interpreted as an brightest collapse virialization rich clusters.