{
  "id": "astro-ph/9808042",
  "version": "v1",
  "published": "1998-08-05T20:48:44.000Z",
  "updated": "1998-08-05T20:48:44.000Z",
  "title": "Observation of Cen A by the Rossi X-ray Timing Explorer",
  "authors": [
    "R. E. Rothschild",
    "D. L. Band",
    "P. R. Blanco",
    "D. E. Gruber",
    "W. A. Heindl",
    "D. R. MacDonald",
    "D. C. Marsden",
    "K. Jahoda",
    "D. Pierce",
    "G. Madejski",
    "M. Elvis",
    "D. A. Schwartz",
    "R. Remillard",
    "A. A. Zdziarski",
    "C. Done",
    "R. Svensson"
  ],
  "comment": "24 pages, 3 figures, accepted to The Astrophysical Journal",
  "doi": "10.1086/306618",
  "categories": [
    "astro-ph"
  ],
  "abstract": "The Rossi X-ray Timing Explorer made a short (10 ks) observation of the radio galaxy Centaurus A on 14 August 1996. Analysis of the combined 2.5-240 keV spectrum has revealed a heavily absorbed(NH=9.42+/-0.24 e22 cm-2) primary power law (index=1.86+/-0.015) and an iron line due to fluorescence of cold matter (EW=162+/-25 eV). Flux from either a jet, primary flux scattered into the line of sight, or primary flux seen through a partial absorber was not required. The iron line width is unresolved at the 95% confidence level (sigma < 0.54 keV). No significant variability in the iron line flux is seen from measurements over the last two decades, while the overall continuum flux varied by more than a factor of four, which implies that the line emission region is distant from that of the primary emission. While radio-quiet Seyfert galaxies exhibit spectral components attributable to Compton reflection from cold matter, Cen A reveals no such component (exposed solid angle ratio < 0.09). This supports unified models of active galaxies that have little difference between Seyfert 2 and low luminosity radio galaxies",
  "revisions": [
    {
      "version": "v1",
      "updated": "1998-08-05T20:48:44.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "rossi x-ray timing explorer",
      "radio galaxy",
      "iron line",
      "observation",
      "low luminosity radio galaxies"
    ],
    "tags": [
      "journal article"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 24,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 489855
    }
  }
}