| Low accretion rates at the AGN cosmic downsizing epoch (2007) | |||||||||
Abstract | |||||||||
| Context: X-ray surveys of Active Galactic Nuclei (AGN) indicate `cosmic downsizing', with the comoving number density of high-luminosity objects peaking at higher redshifts (z about 2) than low-luminosity AGN (z. Comment: Accepted for publication in Astronomy and Astrophysics | |||||||||
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