Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008head...10.3205b&link_type=abstract
American Astronomical Society, HEAD meeting #10, #32.05
Astronomy and Astrophysics
Astronomy
Scientific paper
Recent high-resolution observations of low-z AGN have shown evidence for bursts of star-formation only tens of parsecs away from the AGN. In addition, the hard X-ray background is dominated by obscured AGN at a point in cosmic history where the star-formation rate density is reaching its maximum. Therefore, we consider the hypothesis that the obscuring material responsible for the shape of the X-ray background is produced by nuclear starforming disks close to the AGN. Using a one-dimensional analytic model for an Eddington-limited starburst disk, we consider the range of properties these disks must have in order to produce significant AGN obscuration. We show how these properties will change as a function of the AGN X-ray luminosity. Finally, we predict radio, mid-IR and far-IR fluxes from these disks and compare to current observational results.
Ballantyne David R.
Thompson Thomas
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