Corpus ID: 18817532

AGN unification and the X-ray background

@article{Treister2006AGNUA,
  title={AGN unification and the X-ray background},
  author={E. Treister and C. Astronomy and Y. University and Yale Center for AstronomyAstrophysics and D. Astronomia and U. Chile and D. Physics},
  journal={arXiv: Astrophysics},
  year={2006}
}
Active Galactic Nuclei (AGN) unification, which implies a large number of obscured AGN, can explain the optical, infrared and X-ray content of deep multiwavelength surveys. Here, we show that the same model also successfully explains the spectral shape and intensity of the X-ray background. The simplest possible unified model assumes a constant ratio of obscured to unobscured AGN, independent of redshift or luminosity. With almost no free parameters, the predicted X-ray background agrees… Expand

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