Photon-axion mixing and ultra-high-energy cosmic rays from BL Lac type objects - Shining light through the Universe

Jan, 2009
10 pages
Published in:
  • Phys.Rev.D 84 (2011) 125019
e-Print:

Citations per year

20092013201720212024024681012
Abstract: (arXiv)
Photons may convert into axion like particles and back in the magnetic field of various astrophysical objects, including active galaxies, clusters of galaxies, intergalactic space and the Milky Way. This is a potential explanation for the candidate neutral ultra-high-energy (E>10^18 eV) particles from distant BL Lac type objects which have been observed by the High Resolution Fly's Eye experiment. Axions of the same mass and coupling may explain also TeV photons detected from distant blazars.
Note:
  • Revtex 10 pages, 6 figures. V.2: QED dispersion effects taken into account; principal results unchanged. V3: misprints and sqrt(4*pi) factors in Gauss to eV conversion corrected; conclusions unchanged
  • 14.80.Va
  • 98.70.Sa
  • magnetic field: galaxy
  • photon axion: mixing
  • cosmic radiation: UHE
  • cosmic radiation: particle source
  • neutral particle: cosmic radiation
  • correlation
  • axion: cosmic radiation
  • numerical calculations: Monte Carlo