Secondary gamma rays from ultrahigh energy cosmic rays produced in magnetized environments

Details Secondary gamma rays from ultrahigh energy cosmic rays produced in magnetized environments Secondary gamma rays from ultrahigh energy cosmic rays produced in magnetized environments

Apr 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006phrvd..73h3008a&link_type=abstract

Physical Review D, vol. 73, Issue 8, id. 083008

Physics

16

Cosmic Rays, Galaxy Clusters, Gamma-Ray Sources, Gamma-Ray Bursts

Scientific paper

Nearby sources of cosmic rays up to a ZeV(=1021eV) could be observed with a multimessenger approach including secondary γ-rays and neutrinos. If cosmic rays above ˜1018eV are produced in magnetized environments such as galaxy clusters, the flux of secondary γ-rays can be enhanced by a factor ˜10 at Gev energies and by a factor of a few at TeV energies, compared to unmagnetized sources. Particularly enhanced are synchrotron and cascade photons from e+e- pairs produced by protons from sources with relatively steep injection spectra ∝E-2.6. Such sources should be visible at the same time in ultrahigh energy cosmic ray experiments and γ-ray telescopes.

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