{
  "id": "astro-ph/0407450",
  "version": "v1",
  "published": "2004-07-21T15:03:47.000Z",
  "updated": "2004-07-21T15:03:47.000Z",
  "title": "Gamma-Ray Emission From Be/X-Ray Binaries",
  "authors": [
    "Mariana Orellana",
    "Gustavo E. Romero"
  ],
  "comment": "14 pages, to appear in: \"The multiwavelength approach to unidentified gamma-ray sources\", Eds. K. S. Cheng & G.E. Romero, Kluwer Academic Publisher (Astrophysics and Space Sciences Journal). The present version has two additional figures respect to the version to be published in the journal",
  "journal": "Astrophys.Space Sci. 297 (2005) 167-178",
  "doi": "10.1007/s10509-005-7618-6",
  "categories": [
    "astro-ph"
  ],
  "abstract": "Be/X-ray binaries are systems formed by a massive Be star and a magnetized neutron star, usually in an eccentric orbit. The Be star has strong equatorial winds occasionally forming a circumstellar disk. When the neutron star intersects the disk the accretion rate dramatically increases and a transient accretion disk can be formed around the compact object. This disk can last longer than a single orbit in the case of major outbursts. If the disk rotates faster than the neutron star, the Cheng-Ruderman mechanism can produce a current of relativistic protons that would impact onto the disk surface, producing gamma-rays from neutral pion decays and initiating electromagnetic cascades inside the disk. In this paper we present calculations of the evolution of the disk parameters during both major and minor X-ray events, and we discuss the generation of gamma-ray emission at different energies within a variety of models that include both screened and unscreened disks.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2004-07-21T15:03:47.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "gamma-ray emission",
      "be/x-ray binaries",
      "equatorial winds occasionally forming",
      "disk rotates faster",
      "minor x-ray events"
    ],
    "tags": [
      "journal article"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 14,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 654895
    }
  }
}