{
  "id": "2006.08757",
  "version": "v1",
  "published": "2020-06-15T20:50:03.000Z",
  "updated": "2020-06-15T20:50:03.000Z",
  "title": "Gamma-ray emission revealed at the western edge of SNR G344.7-0.1",
  "authors": [
    "J. Eagle",
    "S. Marchesi",
    "M. Ajello",
    "D. Castro",
    "A. Vendrasco"
  ],
  "comment": "9 pages, 6 figures",
  "categories": [
    "astro-ph.HE"
  ],
  "abstract": "We report on the investigation of a very high energy (VHE), Galactic gamma-ray source recently discovered at >50GeV using the Large Area Telescope (LAT) on board the Fermi Gamma-Ray Space Telescope. This object, 2FHL J1703.4-4145, displays a very hard >50GeV spectrum with a photon index ~1.2 in the 2FHL catalog and, as such, is one of the most extreme sources in the 2FHL sub-sample of Galactic objects. A detailed analysis of the available multi-wavelength data shows that this source is located on the western edge of the supernova remnant (SNR) G344.7--0.1, along with extended TeV source, HESS J1702-420. The observations and the spectral energy distribution modeling support a scenario where this gamma-ray source is the byproduct of the interaction between the SNR shock and the dense surrounding medium, with escaping cosmic rays (CRs) diffusing into the dense environment and interacting with a large local cloud, generating the observed TeV emission. If confirmed, an interaction between the SNR CRs and a nearby cloud would make 2FHL J1703.4-4145 another promising candidate for efficient particle acceleration of the 2FHL Galactic sample, following the first candidate from our previous investigation of a likely shock-cloud interaction occurring on the West edge of the Vela SNR.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2020-06-15T20:50:03.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "western edge",
      "snr g344",
      "gamma-ray emission",
      "2fhl j1703",
      "spectral energy distribution modeling support"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 9,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}