{
  "id": "1210.8370",
  "version": "v1",
  "published": "2012-10-31T15:40:31.000Z",
  "updated": "2012-10-31T15:40:31.000Z",
  "title": "Non-thermal emission from Pulsar-Wind Nebulae in Starburst Galaxies",
  "authors": [
    "Stefan Ohm",
    "Jim Hinton"
  ],
  "comment": "5 pages, 3 figures, accepted for publication in MNRAS Letters",
  "categories": [
    "astro-ph.HE"
  ],
  "abstract": "The recently detected gamma-ray emission from Starburst galaxies is most commonly considered to be diffuse emission arising from strong interactions of accelerated cosmic rays. Mannheim et al. (2012), however, have argued that a population of individual pulsar-wind nebulae (PWNe) could be responsible for the detected TeV emission. Here we show that the Starburst environment plays a critical role in the TeV emission from Starburst PWNe, and perform the first detailed calculations for this scenario. Our approach is based on the measured star-formation rates in the Starburst nuclei of NGC 253 and M 82, assumed pulsar birth periods and a simple model for the injection of non-thermal particles. The two-zone model applied here takes into account the high far-infrared radiation field, and different densities and magnetic fields in the PWNe and the Starburst regions, as well as particle escape. We confirm that PWNe can make a significant contribution to the TeV fluxes, provided that the injection spectrum of particles is rather hard and that the average pulsar birth period is rather short (~35 ms). The PWN contribution should lead to a distinct spectral feature which can be probed by future instruments such as CTA.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2012-10-31T15:40:31.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "starburst galaxies",
      "non-thermal emission",
      "tev emission",
      "average pulsar birth period",
      "individual pulsar-wind nebulae"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "doi": "10.1093/mnrasl/sls025",
      "journal": "Monthly Notices of the Royal Astronomical Society",
      "year": 2013,
      "month": "Feb",
      "volume": 429,
      "number": 1
    },
    "note": {
      "typesetting": "TeX",
      "pages": 5,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 1197306,
      "adsabs": "2013MNRAS.429L..70O"
    }
  }
}