{
  "id": "1403.6739",
  "version": "v1",
  "published": "2014-03-26T16:37:38.000Z",
  "updated": "2014-03-26T16:37:38.000Z",
  "title": "To understand the X-ray spectrum of anomalous X-ray pulsars and soft gamma-ray repeaters",
  "authors": [
    "Yan-Jun Guo",
    "Shi Dai",
    "Zhao-Sheng Li",
    "Yuan Liu",
    "Hao Tong",
    "Ren-Xin Xu"
  ],
  "comment": "12 pages, 6 figures, 6 tables, submitted to RAA",
  "categories": [
    "astro-ph.HE"
  ],
  "abstract": "Hard X-rays above 10 keV are detected from several anomalous X-ray pulsars (AXPs) and soft gamma-ray repeaters (SGRs), and different models have been proposed to explain the physical origin within the frame of either magnetar model or fallback disk system. Using data from $\\it Suzaku$ and INTEGRAL, we study the soft and hard X-ray spectra of four AXPs/SGRs, 1RXS J170849-400910, 1E 1547.0-5408, SGR 1806-20 and SGR 0501+4516. It is found that the spectra could be well reproduced by bulk-motion Comptonization (BMC) process as was first suggested by Tr$\\\"u$mper et al., showing that the accretion scenario could be compatible with X-ray emission of AXPs/SGRs. HXMT simulations for BMC model show that the spectra would have discrepancies from power-law, especially the cutoff at $\\sim$ 200 keV. Thus future observations are promising to distinguish different models for the hard tail and may help us understand the nature of AXPs/SGRs.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2014-03-26T16:37:38.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "soft gamma-ray repeaters",
      "anomalous x-ray pulsars",
      "x-ray spectrum",
      "understand",
      "fallback disk system"
    ],
    "publication": {
      "doi": "10.1088/1674-4527/15/4/006",
      "journal": "Research in Astronomy and Astrophysics",
      "year": 2015,
      "month": "Apr",
      "volume": 15,
      "number": 4,
      "pages": 525
    },
    "note": {
      "typesetting": "TeX",
      "pages": 12,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 1287330,
      "adsabs": "2015RAA....15..525G"
    }
  }
}