{
  "id": "1601.02305",
  "version": "v1",
  "published": "2016-01-11T02:34:49.000Z",
  "updated": "2016-01-11T02:34:49.000Z",
  "title": "A Bayesian analysis of the 69 highest energy cosmic rays detected by the Pierre Auger Observatory",
  "authors": [
    "Alexander Khanin",
    "Daniel J. Mortlock"
  ],
  "categories": [
    "astro-ph.HE"
  ],
  "abstract": "The origins of ultra-high energy cosmic rays (UHECRs) remain an open question. Several attempts have been made to cross-correlate the arrival directions of the UHECRs with catalogs of potential sources, but no definite conclusion has been reached. We report a Bayesian analysis of the 69 events from the Pierre Auger Observatory (PAO), that aims to determine the fraction of the UHECRs that originate from known AGNs in the Veron-Cety & Veron (VCV) catalog, as well as AGNs detected with the Swift Burst Alert Telescope (Swift-BAT), galaxies from the 2MASS Redshift Survey (2MRS), and an additional volume-limited sample of 17 nearby AGNs. The study makes use of a multi-level Bayesian model of UHECR injection, propagation and detection. We find that for reasonable ranges of prior parameters, the Bayes factors disfavour a purely isotropic model. For fiducial values of the model parameters, we report 68% credible intervals for the fraction of source originating UHECRs of 0.09+0.05-0.04, 0.25+0.09-0.08, 0.24+0.12-0.10, and 0.08+0.04-0.03 for the VCV, Swift-BAT and 2MRS catalogs, and the sample of 17 AGNs, respectively.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2016-01-11T02:34:49.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "highest energy cosmic rays",
      "pierre auger observatory",
      "bayesian analysis",
      "ultra-high energy cosmic rays",
      "swift burst alert telescope"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2016arXiv160102305K",
      "inspire": 1414753
    }
  }
}