{
  "id": "1311.3075",
  "version": "v1",
  "published": "2013-11-13T10:43:36.000Z",
  "updated": "2013-11-13T10:43:36.000Z",
  "title": "The story of Seyfert galaxy RE J2248-511: from intriguingly ultrasoft to unremarkably average",
  "authors": [
    "Rhaana Starling",
    "C. Done",
    "C. Jin",
    "E. Romero-Colmenero",
    "S. Potter",
    "K. Wiersema",
    "K. Page",
    "M. Page",
    "A. Breeveld",
    "A. Lobban"
  ],
  "comment": "11 pages, 9 figures. Accepted for publication in MNRAS",
  "categories": [
    "astro-ph.GA",
    "astro-ph.CO",
    "astro-ph.HE"
  ],
  "abstract": "RE J2248-511 is one of only 14 non-blazar AGN detected in the far ultraviolet by the ROSAT Wide Field Camera implying a large ultrasoft X-ray flux. This soft X-ray excess is strongly variable on year timescales, a common property of Narrow Line Seyfert 1s, yet its optical linewidths classify this source as a broad-lined Seyfert 1. We use four nearly simultaneous optical--X-ray SEDs spanning 7 years to study the spectral shape and long term variability of RE J2248-511. Here we show that the continuum SED for the brightest epoch dataset is consistent with the mean SED of a standard quasar, and matches well to that from an XMM-SDSS sample of AGN with <M/M_Sun> ~ 10^8 and <L/L_Edd> ~ 0.2. All the correlated optical and soft X-ray variability can be due entirely to a major absorption event. The only remarkable aspect of this AGN is that there is no measurable intrinsic X-ray absorption column in the brightest epoch dataset. The observed FUV flux is determined by the combination of this and the fact that the source lies within a local absorption `hole'. RE J2248-511, whose variable, ultrasoft X-ray flux once challenged its BLS1 classification, demonstrates that characterisation of such objects requires multi-epoch, multi-wavelength campaigns.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2013-11-13T10:43:36.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "seyfert galaxy",
      "unremarkably average",
      "intriguingly ultrasoft",
      "brightest epoch dataset",
      "wide field camera implying"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "doi": "10.1093/mnras/stt2201",
      "journal": "Monthly Notices of the Royal Astronomical Society",
      "year": 2014,
      "month": "Feb",
      "volume": 437,
      "number": 4,
      "pages": 3929
    },
    "note": {
      "typesetting": "TeX",
      "pages": 11,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 1264231,
      "adsabs": "2014MNRAS.437.3929S"
    }
  }
}