{
  "id": "1709.04185",
  "version": "v1",
  "published": "2017-09-13T08:38:20.000Z",
  "updated": "2017-09-13T08:38:20.000Z",
  "title": "Studying cosmological $γ$-ray propagation with the Cherenkov Telescope Array",
  "authors": [
    "Florian Gaté",
    "Rafael Alves Batista",
    "Jonathan Biteau",
    "Julien Lefaucheur",
    "Salvatore Mangano",
    "Manuel Meyer",
    "Quentin Piel",
    "Santiago Pita",
    "David Sanchez",
    "Ievgen Vovk",
    "for the CTA Consortium"
  ],
  "comment": "Proceedings of the 35th International Cosmic Ray Conference - ICRC2017",
  "categories": [
    "astro-ph.HE"
  ],
  "abstract": "The measurement of $\\gamma$-rays originating from active galactic nuclei offers the unique opportunity to study the propagation of very-high-energy photons over cosmological distances. Most prominently, $\\gamma$-rays interact with the extragalactic background light (EBL) to produce $e^+e^-$ pairs, imprinting an attenuation signature on $\\gamma$-ray spectra. The $e^+e^-$ pairs can also induce electromagnetic cascades whose detectability in $\\gamma$-rays depends on the intergalactic magnetic field (IGMF). Furthermore, physics beyond the Standard Model such as Lorentz invariance violation (LIV) or oscillations between photons and weakly interacting sub-eV particles (WISPs) could affect the propagation of $\\gamma$-rays. The future Cherenkov Telescope Array (CTA), with its unprecedented $\\gamma$-ray source sensitivity, as well as enhanced energy and spatial resolution at very high energies, is perfectly suited to study cosmological effects on $\\gamma$-ray propagation. Here, we present first results of a study designed to realistically assess the capabilities of CTA to probe the EBL, IGMF, LIV, and WISPs.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2017-09-13T08:38:20.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "cherenkov telescope array",
      "ray propagation",
      "studying cosmological",
      "extragalactic background light",
      "induce electromagnetic cascades"
    ],
    "tags": [
      "conference paper"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}