{
  "id": "1306.6443",
  "version": "v1",
  "published": "2013-06-27T09:26:56.000Z",
  "updated": "2013-06-27T09:26:56.000Z",
  "title": "Swift/XRT orbital monitoring of the candidate supergiant fast X-ray transient IGR J17354-3255",
  "authors": [
    "L. Ducci",
    "P. Romano",
    "P. Esposito",
    "E. Bozzo",
    "H. A. Krimm",
    "S. Vercellone",
    "V. Mangano",
    "J. A. Kennea"
  ],
  "comment": "Accepted for publication in Astronomy and Astrophysics. 9 pages",
  "categories": [
    "astro-ph.HE"
  ],
  "abstract": "We report on the Swift/X-ray Telescope (XRT) monitoring of the field of view around the candidate supergiant fast X-ray transient (SFXT) IGR J17354-3255, which is positionally associated with the AGILE/GRID gamma-ray transient AGL J1734-3310. Our observations, which cover 11 days for a total on-source exposure of about 24 ks, span 1.2 orbital periods (P_orb=8.4474 d) and are the first sensitive monitoring of this source in the soft X-rays. These new data allow us to exploit the timing variability properties of the sources in the field to unambiguously identify the soft X-ray counterpart of IGR J17354-3255. The soft X-ray light curve shows a moderate orbital modulation and a dip. We investigated the nature of the dip by comparing the X-ray light curve with the prediction of the Bondi-Hoyle-Lyttleton accretion theory, assuming both spherical and nonspherical symmetry of the outflow from the donor star. We found that the dip cannot be explained with the X-ray orbital modulation. We propose that an eclipse or the onset of a gated mechanism is the most likely explanation for the observed light curve.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2013-06-27T09:26:56.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "candidate supergiant fast x-ray transient",
      "supergiant fast x-ray transient igr",
      "swift/xrt orbital monitoring",
      "soft x-ray",
      "light curve"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "doi": "10.1051/0004-6361/201321635",
      "journal": "Astronomy and Astrophysics",
      "year": 2013,
      "month": "Aug",
      "volume": 556
    },
    "note": {
      "typesetting": "TeX",
      "pages": 9,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 1240048,
      "adsabs": "2013A&A...556A..72D"
    }
  }
}