{
  "id": "1409.1985",
  "version": "v1",
  "published": "2014-09-06T06:19:59.000Z",
  "updated": "2014-09-06T06:19:59.000Z",
  "title": "The orbital period of Swift J1816.7-1613 revealed by the Swift-BAT telescope",
  "authors": [
    "V. La Parola",
    "A. Segreto",
    "G. Cusumano",
    "N. Masetti",
    "A. D'Ai",
    "A. Melandri"
  ],
  "comment": "6 pages, 6 figures. Accepted for publication on MNRAS",
  "categories": [
    "astro-ph.HE"
  ],
  "abstract": "We have analyzed the Swift data relevant to the high mass X-ray binary Swift J1816.7-1613. The timing analysis of the BAT survey data unveiled a modulation at a period of P_0=118.5+/-0.8 days that we interpret as the orbital period of the X-ray binary system. The modulation is due to a sequence of bright flares, lasting ~30 d, separated by long quiescence intervals. This behavior is suggestive of a Be binary system, where periodic or quasi-periodic outbursts are the consequence of an enhancement of the accretion flow from the companion star at the periastron passage. The position of Swift J1816.7-1613 on the Corbet diagram strengthens this hypothesis. The broad band 0.2-150 keV spectrum is well modeled with a strongly absorbed power-law with a flat photon index Gamma~ 0.2 and a cut-off at ~ 10 keV.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2014-09-06T06:19:59.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "orbital period",
      "swift-bat telescope",
      "high mass x-ray binary swift",
      "mass x-ray binary swift j1816",
      "binary system"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "doi": "10.1093/mnrasl/slu147",
      "journal": "Monthly Notices of the Royal Astronomical Society",
      "year": 2014,
      "month": "Nov",
      "volume": 445,
      "number": 1
    },
    "note": {
      "typesetting": "TeX",
      "pages": 6,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 1315395,
      "adsabs": "2014MNRAS.445L.119L"
    }
  }
}