The contribution of AGN to the X-ray background: the effect of iron features

Details The contribution of AGN to the X-ray background: the effect of iron features The contribution of AGN to the X-ray background: the effect of iron features

1999-02-18

arxiv.org/abs/astro-ph/9902256v1

Astronomy and Astrophysics

Astrophysics

21 LaTeX pages with 5 Postscript figures. Accepted for publication in New Astronomy

Scientific paper

10.1016/S1384-1076(99)00004-4

The contribution of the iron emission line, commonly detected in the X-ray spectra of Seyfert (Sey) galaxies, to the cosmic X-ray background (XRB) spectrum is evaluated in the framework of the XRB synthesis models based on AGN unification schemes. To derive the mean line properties, we have carried out a search in the literature covering a sample of about 70 AGN. When adopting line parameters in agreement with the observations, it turns out that the maximum contribution of the iron line to the XRB is less than 7% at a few keV. This is still below the present uncertainties in the XRB spectrum measurements.

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