{
  "id": "1402.7245",
  "version": "v1",
  "published": "2014-02-28T13:47:07.000Z",
  "updated": "2014-02-28T13:47:07.000Z",
  "title": "Simultaneous NuSTAR and XMM-Newton 0.5-80 keV spectroscopy of the Narrow Line Seyfert 1 galaxy SWIFT J2127.4+5654",
  "authors": [
    "A. Marinucci",
    "G. Matt",
    "E. Kara",
    "G. Miniutti",
    "M. Elvis",
    "P. Arevalo",
    "D. R. Ballantyne",
    "M. Balokovic",
    "F. Bauer",
    "L. Brenneman",
    "S. E. Boggs",
    "M. Cappi",
    "F. E. Christensen",
    "W. W. Craig",
    "A. C. Fabian",
    "F. Fuerst",
    "C. J. Hailey",
    "F. A. Harrison",
    "G. Risaliti",
    "C. S. Reynolds",
    "D. K. Stern",
    "D. J. Walton",
    "W. Zhang"
  ],
  "comment": "11 pages, 10 figures, accepted for publication on MNRAS",
  "categories": [
    "astro-ph.HE",
    "astro-ph.GA"
  ],
  "abstract": "We present a broad band spectral analysis of the joint XMM-Newton and NuSTAR observational campaign of the Narrow Line Seyfert 1 SWIFT J2127.4+5654, consisting of 300 ks performed during three XMM-Newton orbits. We detect a relativistic broadened iron K$\\alpha$ line originating from the innermost regions of the accretion disc surrounding the central black hole, from which we infer an intermediate spin of $a$=$0.58^{+0.11}_{-0.17}$. The intrinsic spectrum is steep ($\\Gamma=2.08\\pm0.01$) as commonly found in Narrow Line Seyfert 1 galaxies, while the cutoff energy (E$_{\\rm c}=108^{+11}_{-10}$ keV) falls within the range observed in Broad Line Seyfert 1 Galaxies. We measure a low-frequency lag that increases steadily with energy, while at high frequencies, there is a clear lag following the shape of the broad Fe K emission line. Interestingly, the observed Fe K lag in SWIFT J2127.4+5654 is not as broad as in other sources that have maximally spinning black holes. The lag amplitude suggests a continuum-to-reprocessor distance of about $ 10-20\\ r_{\\mathrm{g}}$. These timing results independently support an intermediate black hole spin and a compact corona.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2014-02-28T13:47:07.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "narrow line seyfert",
      "galaxy swift",
      "kev spectroscopy",
      "simultaneous nustar",
      "xmm-newton"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "doi": "10.1093/mnras/stu404",
      "journal": "Monthly Notices of the Royal Astronomical Society",
      "year": 2014,
      "month": "May",
      "volume": 440,
      "number": 3,
      "pages": 2347
    },
    "note": {
      "typesetting": "TeX",
      "pages": 11,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 1283163,
      "adsabs": "2014MNRAS.440.2347M"
    }
  }
}