{
  "id": "1608.00465",
  "version": "v1",
  "published": "2016-08-01T15:13:34.000Z",
  "updated": "2016-08-01T15:13:34.000Z",
  "title": "The Mid-Infrared Luminosity Evolution and Luminosity Function of Quasars with SDSS and WISE",
  "authors": [
    "J. Singal",
    "J. George",
    "A. Gerber"
  ],
  "comment": "13 pages, 11 figures, submitted to ApJ. arXiv admin note: text overlap with arXiv:1207.3396",
  "categories": [
    "astro-ph.GA",
    "astro-ph.CO"
  ],
  "abstract": "We determine the 22$\\mu$m luminosity evolution and luminosity function for quasars from a data set of over 20,000 objects obtained by combining flux-limited Sloan Digital Sky Survey optical and Wide field Infrared Survey Explorer mid-infrared data. We apply methods developed in previous works to access the intrinsic population distributions non-parametrically, taking into account the truncations and correlations inherent in the data. We find that the population of quasars exhibits positive luminosity evolution with redshift in the mid-infrared, but with considerably less mid-infrared evolution than in the optical or radio bands. With the luminosity evolutions accounted for, we determine the density evolution and local mid-infrared luminosity function. The latter displays a sharp flattening at local luminosities below $\\sim 10^{31}$ erg sec$^{-1}$ Hz$^{-1}$, which has been reported previously at 15 $\\mu$m for AGN classified as both type-1 and type-2. We calculate the integrated total emission from quasars at 22 $\\mu$m and find it to be a small fraction of both the cosmic infrared background light and the integrated emission from all sources at this wavelength.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2016-08-01T15:13:34.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "luminosity function",
      "mid-infrared luminosity evolution",
      "sloan digital sky survey",
      "survey explorer mid-infrared data",
      "field infrared survey explorer"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 13,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}