{
  "id": "1712.04271",
  "version": "v1",
  "published": "2017-12-12T12:57:09.000Z",
  "updated": "2017-12-12T12:57:09.000Z",
  "title": "Discovery of GeV gamma-ray emission from the LMC B0443-6657 with the Fermi Large Area Telescope",
  "authors": [
    "Qing-Wen Tang"
  ],
  "comment": "11 pages, 5 figures, submitted for publication in Ap&SS",
  "categories": [
    "astro-ph.HE"
  ],
  "abstract": "We report the discovery of gamma-ray detection from the LMC B0443-6657 using the Large Area Telescope (LAT) on board the [Fermi Gamma-ray Space Telescope]. LMC B0443-6657 is a flat spectrum radio source. Employing the 8 years of the LAT observations between 0.2-100~GeV, our result reveals a significant excess ($>9.4\\sigma$) above the background, which is based on either the 4-years LAT catalog or the best source model of 73.3 months data. A power law model is assessed to be adequate to describe the $0.2-100$ GeV $\\gamma$-ray spectrum and yields a flux of $3.27\\pm0.53\\ \\mathrm{photon\\ \\,cm}^2\\ \\mathrm{s}^{-1}$ with photon index $2.35\\pm0.11$, corresponding to an isotropic gamma-ray luminosity of $5.3\\times10^{40}\\ \\mathrm{erg\\ \\,s}^{-1}$. The hadronic model predicts a low X-ray or TeV flux while the leptonic predicts an observable flux in these two energy bands. The follow-up observations of the LMC B0443-6657 in X-ray or TeV band would help constrain the contribution from the CR electrons and protons.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2017-12-12T12:57:09.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "fermi large area telescope",
      "gev gamma-ray emission",
      "fermi gamma-ray space telescope",
      "flat spectrum radio source",
      "power law model"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 11,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}