{
  "id": "1611.03848",
  "version": "v1",
  "published": "2016-11-11T20:46:10.000Z",
  "updated": "2016-11-11T20:46:10.000Z",
  "title": "Fast Radio Bursts with Extended Gamma-Ray Emission?",
  "authors": [
    "Kohta Murase",
    "Peter Meszaros",
    "Derek B. Fox"
  ],
  "comment": "8 pages",
  "categories": [
    "astro-ph.HE",
    "astro-ph.CO"
  ],
  "abstract": "We consider some general implications of bright gamma-ray counterparts to fast radio bursts (FRBs). We show that, even if these manifest in only a fraction of FRBs, gamma-ray detections with current satellites (including Swift) provide stringent constraints on cosmological FRB models. If the energy is drawn from the magnetic energy of a compact object such as a magnetized neutron star, the sources should be nearby and very rare. If the intergalactic medium is responsible for the observed dispersion measure, the required gamma-ray energy is comparable to that of the early afterglow or extended emission of short gamma-ray bursts. While this can be reconciled with the rotation energy of compact objects, as expected in many merger scenarios, the prompt outflow that yields the gamma-rays is too dense for radio waves to escape. Highly-relativistic winds launched in a precursor phase, and forming a wind bubble, may avoid the scattering and absorption limits and could yield FRB emission. Largely independent of source models, we show that detectable radio afterglow emission from gamma-ray bright FRBs can reasonably be anticipated. Gravitational wave searches can also be expected to provide useful diagnoses.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2016-11-11T20:46:10.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "fast radio bursts",
      "extended gamma-ray emission",
      "compact object",
      "short gamma-ray bursts",
      "bright gamma-ray counterparts"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 8,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}