{
  "id": "2001.00506",
  "version": "v1",
  "published": "2020-01-02T16:13:23.000Z",
  "updated": "2020-01-02T16:13:23.000Z",
  "title": "AGN feedback in the FR II galaxy 3C 220.1",
  "authors": [
    "Wenhao Liu",
    "Ming Sun",
    "Paul E. J. Nulsen",
    "Diana M. Worrall",
    "Mark Birkinshaw",
    "Craig Sarazin",
    "William R. Forman",
    "Christine Jones",
    "Chong Ge"
  ],
  "comment": "14 pages, 13 figures, MNRAS accepted",
  "categories": [
    "astro-ph.HE",
    "astro-ph.GA"
  ],
  "abstract": "We present results from a deep (174 ks) Chandra observation of the FR-II radio galaxy 3C 220.1, the central brightest cluster galaxy (BCG) of a $kT \\sim$ 4 keV cluster at $z=0.61$. The temperature of the hot cluster medium drops from $\\sim5.9$ keV to $\\sim3.9$ keV at $\\sim$ 35 kpc radius, while the temperature at smaller radii may be substantially lower. The central active galactic nucleus (AGN) outshines the whole cluster in X-rays, with a bolometric luminosity of $2.0\\times10^{46}$ erg s$^{-1}$ ($\\sim10$% of the Eddington rate). The system shows a pair of potential X-ray cavities $\\sim35$ kpc east and west of the nucleus. The cavity power is estimated within the range of $1.0\\times10^{44}$ erg s$^{-1}$ and $1.7\\times10^{45}$ erg s$^{-1}$, from different methods. The X-ray enhancements in the radio lobes could be due to inverse Compton emission, with a total 2-10 keV luminosity of $\\sim8.0\\times10^{42}$ erg s$^{-1}$. We compare 3C 220.1 with other cluster BCGs, including Cygnus A, as there are few BCGs in rich clusters hosting an FR-II galaxy. We also summarize the jet power of FR-II galaxies from different methods. The comparison suggests that the cavity power of FR-II galaxies likely under-estimates the jet power. The properties of 3C 220.1 suggest that it is at the transition stage from quasar-mode feedback to radio-mode feedback.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2020-01-02T16:13:23.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "agn feedback",
      "fr-ii galaxy",
      "hot cluster medium drops",
      "fr-ii radio galaxy 3c",
      "cavity power"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 14,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}