{
  "id": "1202.0400",
  "version": "v1",
  "published": "2012-02-02T10:27:56.000Z",
  "updated": "2012-02-02T10:27:56.000Z",
  "title": "A possible ultra strong and broad Fe Ka emission line in Seyfert 2 galaxy IRAS 00521-7054",
  "authors": [
    "Ying Tan",
    "Junxian Wang",
    "Xinwen Shu",
    "Youyuan Zhou"
  ],
  "comment": "14 pages, 4 figures, accepted to ApJ Letters",
  "categories": [
    "astro-ph.HE"
  ],
  "abstract": "We present XMM-Newton spectra of the Seyfert 2 Galaxy IRAS 00521-7054. A strong feature at ~6 keV (observer's frame) can be formally fitted with a strong (EW=1.3+-0.3 keV in the rest frame) and broad Fe Ka line, extending down to 3 keV. The underlying X-ray continuum could be fitted with an absorbed powerlaw (with Gamma = 1.8+-0.2 and N_H = 5.9 x 10^22 cm^-2) plus a soft component. If due to relativistically smeared reflection by an X-ray illuminated accretion disk, the spin of the supermassive black hole is constrained to be 0.97^+0.03_-0.13 (errors at 90% confidence level for one interesting parameter), and the accretion system is viewed at an inclination angle of 37+-4 degree. This would be the first type 2 AGN reported with strong red Fe Ka wing detected which demands a fast rotating SMBH. The unusually large EW would suggest that the light bending effect is strong in this source. Alternatively, the spectra could be fitted by a dual absorber model (though with a global chi^2 higher by ~ 6 for 283 d.o.f) with N_H1 = 7.0 x 10^22 cm^-2 covering 100% of the X-ray source, and N_H2 = 21.7 x 10^22 cm^-2 covering 71%, which does not require an extra broad Fe Ka line.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2012-02-02T10:27:56.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "broad fe ka emission line",
      "broad fe ka line",
      "galaxy iras",
      "ultra strong",
      "fe ka wing"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "doi": "10.1088/2041-8205/747/1/L11",
      "journal": "The Astrophysical Journal",
      "year": 2012,
      "month": "Mar",
      "volume": 747,
      "number": 1
    },
    "note": {
      "typesetting": "TeX",
      "pages": 14,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 1087317,
      "adsabs": "2012ApJ...747L..11T"
    }
  }
}