{
  "id": "astro-ph/9409067",
  "version": "v1",
  "published": "1994-09-27T11:13:18.000Z",
  "updated": "1994-09-27T11:13:18.000Z",
  "title": "The contribution of AGNs to the X-ray background",
  "authors": [
    "A. Comastri",
    "G. Setti",
    "G. Zamorani",
    "G. Hasinger"
  ],
  "comment": "standard LateX file, for hardcopy of figures and tables please contact comastri@astbo1.bo.cnr.it",
  "journal": "Astron.Astrophys.296:1,1995",
  "categories": [
    "astro-ph"
  ],
  "abstract": "We report the results of a detailed analysis of the contribution of various classes of AGNs to the extragalactic X-ray background (XRB). The model is based on the unification schemes of AGNs and on their related X-ray spectral properties in the light of recent observational results. The integrated emission from AGNs, when folded with an appropriate cosmological evolution law, can provide a good fit to the XRB over a wide energy range, from several to $\\sim$ 100 keV, while it contributes only about 74\\% of the ROSAT soft XRB. The model predictions have been checked against all available observational constraints from both hard and soft X-ray surveys (counts, redshift distributions and average X-ray source spectral properties).",
  "revisions": [
    {
      "version": "v1",
      "updated": "1994-09-27T11:13:18.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "contribution",
      "average x-ray source spectral properties",
      "extragalactic x-ray background",
      "appropriate cosmological evolution law",
      "rosat soft xrb"
    ],
    "tags": [
      "journal article",
      "famous paper"
    ],
    "note": {
      "typesetting": "LaTeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 377299
    }
  }
}