{
  "id": "0907.2873",
  "version": "v1",
  "published": "2009-07-16T15:51:58.000Z",
  "updated": "2009-07-16T15:51:58.000Z",
  "title": "Spin-down rate and inferred dipole magnetic field of the soft gamma-ray repeater SGR 1627-41",
  "authors": [
    "P. Esposito",
    "M. Burgay",
    "A. Possenti",
    "R. Turolla",
    "S. Zane",
    "A. De Luca",
    "A. Tiengo",
    "G. L. Israel",
    "F. Mattana",
    "S. Mereghetti",
    "M. Bailes",
    "P. Romano",
    "D. Götz",
    "N. Rea"
  ],
  "comment": "5 pages, 2 figures; accepted for publication in MNRAS Letters",
  "journal": "Monthly Notices of the Royal Astronomical Society: Letters, Volume 399, Issue 1, pp. L44-L48 (2009)",
  "doi": "10.1111/j.1745-3933.2009.00723.x",
  "categories": [
    "astro-ph.HE"
  ],
  "abstract": "Using Chandra data taken on 2008 June, we detected pulsations at 2.59439(4) s in the soft gamma-ray repeater SGR 1627-41. This is the second measurement of the source spin period and allows us to derive for the first time a long-term spin-down rate of (1.9 +/- 0.4)E-11 s/s. From this value we infer for SGR 1627-41 a characteristic age of 2.2 kyr, a spin-down luminosity of 4E+34 erg/s (one of the highest among sources of the same class), and a surface dipole magnetic field strength of 2E+14 G. These properties confirm the magnetar nature of SGR 1627-41; however, they should be considered with caution since they were derived on the basis of a period derivative measurement made using two epochs only and magnetar spin-down rates are generally highly variable. The pulse profile, double-peaked and with a pulsed fraction of (13 +/- 2)% in the 2-10 keV range, closely resembles that observed by XMM-Newton in 2008 September. Having for the first time a timing model for this SGR, we also searched for a pulsed signal in archival radio data collected with the Parkes radio telescope nine months after the previous X-ray outburst. No evidence for radio pulsations was found, down to a luminosity level 10-20 times fainter (for a 10% duty cycle and a distance of 11 kpc) than the peak luminosity shown by the known radio magnetars.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2009-07-16T15:51:58.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "soft gamma-ray repeater sgr",
      "inferred dipole magnetic field",
      "spin-down rate",
      "surface dipole magnetic field strength"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "Wiley-Blackwell",
      "journal": "Monthly Notices of the Royal Astronomical Society",
      "year": 2009,
      "month": "Oct",
      "volume": 399,
      "number": 1
    },
    "note": {
      "typesetting": "TeX",
      "pages": 5,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 825915,
      "adsabs": "2009MNRAS.399L..44E"
    }
  }
}