{
  "id": "2412.05220",
  "version": "v1",
  "published": "2024-12-06T17:52:52.000Z",
  "updated": "2024-12-06T17:52:52.000Z",
  "title": "Millisecond Pulsars in Globular Clusters and Implications for the Galactic Center Gamma-Ray Excess",
  "authors": [
    "Aurelio Amerio",
    "Dan Hooper",
    "Tim Linden"
  ],
  "comment": "23 pages, 5 figures",
  "categories": [
    "astro-ph.HE"
  ],
  "abstract": "We study the gamma-ray emission from millisecond pulsars within the Milky Way's globular cluster system in order to measure the luminosity function of this source population. We find that these pulsars have a mean luminosity of $\\langle L_{\\gamma}\\rangle \\sim (1-8)\\times 10^{33}\\, {\\rm erg/s}$ (integrated between 0.1 and 100 GeV) and a log-normal width of $\\sigma_L \\sim 1.4-2.8$. If the Galactic Center Gamma-Ray Excess were produced by pulsars with similar characteristics, Fermi would have already detected $N \\sim 17-37$ of these sources, whereas only three such pulsar candidates have been identified. We conclude that the excess gamma-ray emission can originate from pulsars only if they are significantly less bright, on average, than those observed within globular clusters or in the Galactic Plane. This poses a serious challenge for pulsar interpretation of the Galactic Center Gamma-Ray Excess.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2024-12-06T17:52:52.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "galactic center gamma-ray excess",
      "millisecond pulsars",
      "milky ways globular cluster system",
      "implications",
      "gamma-ray emission"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 23,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}