{
  "id": "1104.3903",
  "version": "v1",
  "published": "2011-04-19T23:22:36.000Z",
  "updated": "2011-04-19T23:22:36.000Z",
  "title": "A Search for Pulsars between 0.3 and 8 MeV using INTEGRAL",
  "authors": [
    "Joseph F. Dolan"
  ],
  "categories": [
    "astro-ph.HE"
  ],
  "abstract": "The spectra of only a few pulsars are known in the low-energy gamma-ray region around 1 Mev. We searched for point sources of gamma-radiation in the 0.3-1 and 1-8 Mev bandpasses at the location of known radio and X-ray pulsars. Single channel photometry using the SPI spectrometer on INTEGRAL, obtained using a coded-aperture mask, is feasible if calibrated using known fluxes from point sources. The calibration was carried out using the Crab nebula and verified using the Vela pulsar. The locations of a representative sample of pulsar types were then observed. Other than the Crab and Vela pulsars, no sources were detected. Upper limits are given on the time-averaged flux from the location of 15 other pulsars; most lie below previously published upper limits. Six of the pulsars for which we determine upper limits at 1 MeV have been detected above 100 MeV by FERMI. The upper limits we report here help to describe the spectrum of these pulsars at all wavelengths.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2011-04-19T23:22:36.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "point sources",
      "vela pulsar",
      "determine upper limits",
      "single channel photometry",
      "low-energy gamma-ray region"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 896857,
      "adsabs": "2011arXiv1104.3903D"
    }
  }
}