{
  "id": "1101.0181",
  "version": "v2",
  "published": "2010-12-30T23:43:32.000Z",
  "updated": "2011-02-28T14:57:51.000Z",
  "title": "X-ray bursts from the Terzan 5 transient IGR J17480-2446: nuclear rather than gravitational",
  "authors": [
    "Manoneeta Chakraborty",
    "Sudip Bhattacharyya"
  ],
  "comment": "six pages, 1 table, 2 figures, accepted for publication in ApJ Letters",
  "categories": [
    "astro-ph.HE",
    "astro-ph.GA",
    "nucl-ex",
    "nucl-th"
  ],
  "abstract": "The 2010 outburst of the transient neutron star low-mass X-ray binary IGR J17480-2446 has exhibited a series of unique X-ray bursts, as well as millihertz (mHz) quasi-periodic oscillations (QPOs) related to these bursts. It has been recently proposed that these are type-II bursts, powered by the gravitational energy. This implies that the current nuclear-burning based model of mHz QPOs is not correct, and this timing feature cannot be used as a tool to measure the neutron star parameters. We report the analysis of the Rossi X-ray Timing Explorer data of IGR J17480-2446 to show that the burst properties of this source are quite different from the properties of the type-II bursts observed from the rapid burster and GRO J1744-28. For example, the inferred ratio (~ 50-90) of the non-burst fluence to burst fluence is consistent with the thermonuclear origin of IGR J17480-2446 bursts, and is significantly different from this ratio (< 4) for type-II bursts. Our results suggest that the bursts and the mHz QPOs from IGR J17480-2446 are powered by the nuclear energy.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2011-02-28T14:57:51.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "x-ray bursts",
      "transient igr",
      "x-ray timing explorer data",
      "type-ii bursts",
      "gravitational"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "doi": "10.1088/2041-8205/730/2/L23",
      "journal": "The Astrophysical Journal",
      "year": 2011,
      "month": "Apr",
      "volume": 730,
      "number": 2
    },
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 883301,
      "adsabs": "2011ApJ...730L..23C"
    }
  }
}