{
  "id": "1902.11224",
  "version": "v1",
  "published": "2019-02-28T17:07:52.000Z",
  "updated": "2019-02-28T17:07:52.000Z",
  "title": "The Long-Lasting Activity in the Flat Spectrum Radio Quasar (FSRQ) CTA~102",
  "authors": [
    "Michael Zacharias",
    "Markus Böttcher",
    "Felix Jankowsky",
    "Jean-Philippe Lenain",
    "Stefan J. Wagner",
    "Alicja Wierzcholska"
  ],
  "comment": "9 pages, 5 figures, accepted by Galaxies as part of the special issue \"Monitoring the non-thermal Universe\", a conference held in Cochem, Germany, 17th - 21st September 2018",
  "journal": "2019, Galaxies, 7, 34",
  "categories": [
    "astro-ph.HE",
    "astro-ph.GA"
  ],
  "abstract": "The flat spectrum radio quasar CTA 102 ($z = 1.032$) went through a tremendous phase of variability. Since early 2016 the gamma-ray flux level has been significantly higher than in previous years. It was topped by a four month long giant outburst, where peak fluxes were more than 100 times higher than the quiescence level. Similar trends are observable in optical and X-ray energies. We have explained the giant outburst as the ablation of a gas cloud by the relativistic jet that injects additional matter into the jet and can self-consistently explain the long-term light curve. Here, we argue that the cloud responsible for the giant outburst is part of a larger system that collides with the jet and is responsible for the years-long activity in CTA 102.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2019-02-28T17:07:52.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "long-lasting activity",
      "flat spectrum radio quasar cta",
      "month long giant outburst",
      "gamma-ray flux level",
      "injects additional matter"
    ],
    "tags": [
      "conference paper",
      "journal article"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 9,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}