{
  "id": "1103.5765",
  "version": "v2",
  "published": "2011-03-29T20:16:29.000Z",
  "updated": "2011-05-22T13:30:03.000Z",
  "title": "Antimatter production in supernova remnants",
  "authors": [
    "M. Kachelriess",
    "S. Ostapchenko",
    "R. Tomas"
  ],
  "comment": "8 pages, 8 eps figures; extended version of arXiv:1004.1118; v2: minor corrections, matches published version",
  "journal": "Astrophys.J.733, 119(2011)",
  "categories": [
    "astro-ph.HE"
  ],
  "abstract": "We calculate the energy spectra of cosmic rays (CR) and their secondaries produced in a supernova remnant (SNR), taking into account the time-dependence of the SNR shock. We model the trajectories of charged particles as a random walk with a prescribed diffusion coefficient, accelerating the particles at each shock crossing. Secondary production by CRs colliding with gas is included as a Monte Carlo process. We find that SNRs produce less antimatter than suggested previously: The positron/electron ratio and the antiproton/proton ratio are a few percent and few $\\times 10^{-5}$, respectively. Moreover, the obtained positron/electron ratio decreases with energy, while the antiproton/proton ratio rises at most by a factor of two above 10 GeV.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2011-05-22T13:30:03.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "98.70.Sa"
    ],
    "keywords": [
      "supernova remnant",
      "antimatter production",
      "monte carlo process",
      "positron/electron ratio decreases",
      "antiproton/proton ratio rises"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "doi": "10.1088/0004-637X/733/2/119",
      "journal": "The Astrophysical Journal",
      "year": 2011,
      "month": "Jun",
      "volume": 733,
      "number": 2,
      "pages": 119
    },
    "note": {
      "typesetting": "TeX",
      "pages": 8,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 894520,
      "adsabs": "2011ApJ...733..119K"
    }
  }
}