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Cosmological evolution of the AGN kinetic luminosity function

Published online by Cambridge University Press:  01 August 2006

Andrea Merloni  and
Sebastian Heinz
Andrea Merloni
Affiliation:
Max Planck Institut für Astrophysik, Garching, Germany email: am@mpa-garching.mpg.de
Sebastian Heinz
Affiliation:
Department of Astronomy, University of Wisconsin, Madison, WI, USA email: heinzs@astro.wisc.edu
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Abstract

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We present a first attempt to derive the cosmological evolution of the kinetic luminosity function of AGN based on the joint evolution of the flat spectrum radio and hard X-ray selected AGN luminosity functions. An empirical correlation between jet power and radio core luminosity is found, which is consistent with the theoretical assumption that, below a certain Eddington ratio, SMBH accrete in a radiatively inefficient way, while most of the energy output is in the form of kinetic energy.

We show how the redshift evolution of the kinetic power density from such a low-ṁ mode of accretion makes it a good candidate to explain the so-called “radio mode” of AGN feedback as outlined in many galaxy formation schemes.

Keywords

black hole physics – galaxies: active – galaxies: jets
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2 , Symposium S238: Black Holes from Stars to Galaxies – Across the Range of Masses , August 2006 , pp. 65 - 70
Copyright
Copyright © International Astronomical Union 2007

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