Bridging the Cosmic Infrared Background to the X-Ray Background

Details Bridging the Cosmic Infrared Background to the X-Ray Background Bridging the Cosmic Infrared Background to the X-Ray Background

Oct 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004mas..conf..335s&link_type=abstract

MULTIWAVELENGTH AGN SURVEYS. Proceedings of the Guillermo Haro Conference 2003. Held 8-12 December 2003 in Cozumel, Mexico. Edit

Astronomy and Astrophysics

Astronomy

Scientific paper

We have estimated the contribution of AGN and of their host galaxies to the IR background and source counts. Our ingredients are: the luminosity function and evolution of AGN recently determined by the hard X-ray surveys, and new X-ray to IR spectral energy distributions (SED) for AGNs as a function of their absorption column density NH. We find that AGN contribute < 5% over most of the IR range, whereas galaxies hosting AGNs contribute ~ 10 - 20% in the 1 - 20μm range, and ~ 5% at λ < 60μm. These results are obtained by relying mostly on observed quantities, with only minor assumptions.

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