Downsizing of supermassive black holes from the SDSS quasar survey

Abstract

Starting from the quasar sample of the Sloan Digital Sky Survey (SDSS) for which the Civ line is observed, we use an analysis scheme to derive the z-dependence of the maximum mass of active black holes, which overcomes the problems related to the Malmquist bias. The same procedure is applied to the low redshift sample of SDSS quasars for which H… (More)

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