{
  "id": "1511.01649",
  "version": "v1",
  "published": "2015-11-05T08:25:35.000Z",
  "updated": "2015-11-05T08:25:35.000Z",
  "title": "N_H - N_HI correlation in Gigahertz-peaked-spectrum galaxies",
  "authors": [
    "L. Ostorero",
    "R. Morganti",
    "A. Diaferio",
    "A. Siemiginowska",
    "Ł. Stawarz",
    "R. Moderski",
    "A. Labiano"
  ],
  "comment": "6 pages, 3 figures, in press for Astronomische Nachrichten. Contribution to the Proceedings of the \"Fifth Workshop on Compact Steep Spectrum and GHz-Peaked Spectrum Radio Sources\", held in Rimini (Italy) in May 2015",
  "categories": [
    "astro-ph.GA"
  ],
  "abstract": "With the Westerbork Synthesis Radio Telescope, we performed HI observations of a sample of known X-ray emitting Gigahertz-peaked-spectrum galaxies with compact-symmetric-object morphology (GPS/CSOs) that lacked an HI absorption detection. We combined radio and X-ray data of the full sample of X-ray emitting GPS/CSOs and found a significant, positive correlation between the column densities of the total and neutral hydrogen ($N_{\\rm H}$ and $N_{\\rm HI}$, respectively). Using a Bayesian approach, we simultaneously quantified the parameters of the $N_{\\rm H} - N_{\\rm HI}$ relation and the intrinsic spread of the data set. For a specific subset of our sample, we found $N_{\\rm H} \\propto N_{\\rm HI}^b$, with $b=0.93^{+0.49}_{-0.33}$, and $\\sigma_{int} (N_{\\rm H})= 1.27^{+1.30}_{-0.40}$. The $N_{\\rm H} - N_{\\rm HI}$ correlation suggests a connection between the physical properties of the radio and X-ray absorbing gas.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2015-11-05T08:25:35.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "correlation",
      "westerbork synthesis radio telescope",
      "x-ray emitting gigahertz-peaked-spectrum galaxies",
      "hi absorption detection",
      "x-ray absorbing gas"
    ],
    "publication": {
      "doi": "10.1002/asna.201512284",
      "journal": "Astronomische Nachrichten",
      "year": 2016,
      "month": "Feb",
      "volume": 337,
      "number": "1-2",
      "pages": 148
    },
    "note": {
      "typesetting": "TeX",
      "pages": 6,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2016AN....337..148O"
    }
  }
}