{
  "id": "2003.07365",
  "version": "v1",
  "published": "2020-03-16T18:00:01.000Z",
  "updated": "2020-03-16T18:00:01.000Z",
  "title": "Changing look quasars from tidal disruption flares",
  "authors": [
    "Hamsa Padmanabhan",
    "Abraham Loeb"
  ],
  "comment": "5 pages, 6 figures",
  "categories": [
    "astro-ph.GA",
    "astro-ph.HE"
  ],
  "abstract": "We explore the contributions of Tidal Disruption Events (TDEs) as potential triggers for Active Galactic Nuclei (AGN). Using the latest data available from X-ray and optical observations of high-redshift galaxies, as well as the evolution of their central supermassive black holes, we calculate the extent to which TDEs trigger AGN as a function of their luminosities. We find that at low redshifts ($z < 1$), a few percent of all AGN with bolometric luminosities $L_{\\rm Bol} \\lesssim 10^{44}$ erg s$^{-1}$ may be attributable to TDE triggers. However, this fraction can significantly increase at earlier cosmic times, reaching several tens of percent at $z > 2$, including about 20-50% of the observed population of Changing Look Quasars (CLQs). TDEs may comprise a significant fraction of the Compton-Thick (CT) AGN population at $z > 2$. The above findings motivate further calibration from upcoming X-ray missions and spectroscopic surveys targeting TDE-AGN.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2020-03-16T18:00:01.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "changing look quasars",
      "tidal disruption flares",
      "tidal disruption events",
      "central supermassive black holes",
      "spectroscopic surveys targeting tde-agn"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 5,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}