Nikos Fanidakis - March 28, 2014

AGN clustering: a tale of two modes

Abstract: AGN inhabit a wide range of dark-matter halo environments; from the
centres of clusters, where radio galaxies reside, to average Milky-Way like
haloes in which quasars are found. In my talk, I will demonstrate that the
variety of AGN environments can be explained when more than one accretion modes
are responsible for fuelling the growth of black holes. I will show this by
means of semi-analytic modelling, combined with detailed SPH simulations of
galaxies in a cold dark matter universe with AGN feedback. With these tools, I
will explain how the large scale environment of AGN depends on luminosity and
AGN type, and I will demonstrate how AGN can be used, along with line-emitting
galaxies, to pinpoint the location of galaxy protoclusters in the high-redshift
Universe.