{
  "id": "2304.06065",
  "version": "v1",
  "published": "2023-04-12T18:00:00.000Z",
  "updated": "2023-04-12T18:00:00.000Z",
  "title": "The Most Obscured AGNs in the XMM-SERVS Fields",
  "authors": [
    "Wei Yan",
    "W. N. Brandt",
    "Fan Zou",
    "Shifu Zhu",
    "Chien-Ting J. Chen",
    "Ryan C. Hickox",
    "Bin Luo",
    "Qingling Ni",
    "David M. Alexander",
    "Franz E. Bauer",
    "Cristian Vignali",
    "Fabio Vito"
  ],
  "comment": "12 pages, 9 figures, accepted for publication in ApJ",
  "categories": [
    "astro-ph.GA",
    "astro-ph.HE"
  ],
  "abstract": "We perform X-ray spectral analyses to derive characteristics (e.g., column density, X-ray luminosity) of $\\approx$10,200 active galactic nuclei (AGNs) in the XMM-Spitzer Extragalactic Representative Volume Survey (XMM-SERVS), which was designed to investigate the growth of supermassive black holes across a wide dynamic range of cosmic environments. Using physical torus models (e.g., Borus02) and a Bayesian approach, we uncover 22 representative Compton-thick (CT; $N_{\\rm H} \\;>\\; 1.5\\times10^{24}\\; \\rm cm^{-2}$) AGN candidates with good signal-to-noise ratios as well as a large sample of 136 heavily obscured AGNs. We also find an increasing CT fraction (\\fct ) from low ($z<0.75$) to high ($z>0.75$) redshift. Our CT candidates tend to show hard X-ray spectral shapes and dust extinction in their SED fits, which may shed light on the connection between AGN obscuration and host-galaxy evolution.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2023-04-12T18:00:00.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "obscured agns",
      "xmm-servs fields",
      "perform x-ray spectral analyses",
      "xmm-spitzer extragalactic representative volume survey",
      "hard x-ray spectral shapes"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 12,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}