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Cosmic X-ray Background from Early Active Galactic Nuclei

Published online by Cambridge University Press:  12 April 2016

Andrzej A. Zdziarski
Andrzej A. Zdziarski*
Affiliation:
Space Telescope Science Institute, Baltimore, MD 21218, USA

Extract

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A model for the origin of the cosmic X-ray background (hereafter XRB) is presented. The component of the background left after subtraction of the known classes of sources is explained by emission from a population of black hole sources at the redshift of z ~ 4-5. The model is presented in more detail elsewhere (Zdziarski 1988). Here, we summarize its most important results.

Type
7. Active Galactic Nuclei, Cosmic X-ray Background
Information
International Astronomical Union Colloquium , Volume 115: High Resolution X-ray Spectroscopy of Cosmic Plasmas , 1990 , pp. 274 - 275
Copyright
Copyright © Cambridge University Press 1990

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