{
  "id": "0910.4707",
  "version": "v1",
  "published": "2009-10-25T06:05:47.000Z",
  "updated": "2009-10-25T06:05:47.000Z",
  "title": "Detections of millisecond pulsars with the Fermi Large Area Telescope",
  "authors": [
    "Lucas Guillemot"
  ],
  "comment": "Ph. D. Thesis; Universite de Bordeaux 1; Centre d'Etudes Nucleaires de Bordeaux-Gradignan",
  "categories": [
    "astro-ph.HE",
    "astro-ph.GA"
  ],
  "abstract": "The Fermi observatory was launched on June 11, 2008. It hosts the \\emph{Large Area Telescope} (LAT), sensitive to $\\gamma$-ray photons from 20 MeV to over 300 GeV. When the LAT began its activity, nine young and energetic pulsars were known in $\\gamma$ rays. At least several tens of pulsar detections by the LAT were predicted before launch. The LAT also allowed the study of millisecond pulsars (MSPs), never firmly detected in $\\gamma$ rays before Fermi. This thesis first presents the pulsar timing campaign for the LAT, in collaboration with large radiotelescopes and X-ray telescopes, allowing for high sensitivity pulsed searches. Furthermore, it lead to quasi-homogeneous coverage of the galactic MSPs, so that the search for pulsations in LAT data for this population of stars was not affected by an \\emph{a priori} bias. We present a search for pulsations from these objects in LAT data. For the first time, eight galactic MSPs have been detected as sources of pulsed $\\gamma$-ray emission over 100 MeV. In addition, a couple of good candidates for future detection are seen. A similar search for globular cluster MSPs has not succeeded so far. Comparison of the phase-aligned $\\gamma$-ray and radio light curves, as well as the spectral shapes, leads to the conclusion that their $\\gamma$-ray emission is similar to that of normal pulsars, and is probably produced in the outer-magnetosphere. This discovery suggests that many unresolved $\\gamma$-ray sources are unknown MSPs.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2009-10-25T06:05:47.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "fermi large area telescope",
      "millisecond pulsars",
      "ray emission",
      "lat data",
      "galactic msps"
    ],
    "tags": [
      "dissertation"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 835090,
      "adsabs": "2009arXiv0910.4707G"
    }
  }
}