{
  "id": "1102.1177",
  "version": "v1",
  "published": "2011-02-06T17:29:55.000Z",
  "updated": "2011-02-06T17:29:55.000Z",
  "title": "Evidence for an axion-like particle from blazar spectra?",
  "authors": [
    "Marco Roncadelli",
    "Alessandro De Angelis",
    "Giorgio Galanti",
    "Massimo Persic"
  ],
  "comment": "4 pages, 1 figure. Proceeding of the \"6th Patras Workshop on Axions, WIMPs and WISPs\", Zurich, Switzerland, 5 - 9 July 2010 (to appear in the Proceedings)",
  "categories": [
    "astro-ph.HE",
    "astro-ph.CO",
    "hep-ph"
  ],
  "abstract": "Observations with the Imaging Atmospheric Cherenkov Telescopes H.E.S.S., MAGIC, CANGAROO III and VERITAS have shown that the Universe is more transparent than expected to gamma rays above 100GeV. As a natural explanation, the DARMA scenario has previously been proposed, wherein photons can oscillate into a new very light axionlike particle and vice-versa in the presence of cosmic magnetic fields. Here we demonstrate that the most recent observations further support the DARMA scenario, thereby making the existence of a very light axion-like particle more likely.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2011-02-06T17:29:55.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "blazar spectra",
      "darma scenario",
      "cosmic magnetic fields",
      "imaging atmospheric cherenkov telescopes",
      "observations"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "doi": "10.3204/DESY-PROC-2010-03/roncadelli_marco"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 4,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 888774,
      "adsabs": "2011arXiv1102.1177R"
    }
  }
}