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Gamma Ray Astronomy with Magnetized Zevatrons

Abstract : Nearby sources of cosmic rays up to a ZeV(=10^21 eV) could be observed with a multi-messenger approach including secondary gamma-rays and neutrinos. If cosmic rays above ~10^18 eV are produced in magnetized environments such as galaxy clusters, the flux of secondary gamma-rays below ~1 TeV can be enhanced up to several orders of magnitudes compared to unmagnetized sources. A particular source of enhancement are synchrotron and cascade photons from e^+e^- pairs produced by protons from sources with relatively steep injection spectra proportional to E^-2.6. Such sources should be visible at the same time in ultra-high energy cosmic ray experiments and gamma-ray telescopes.
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Preprints, Working Papers, ...
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Contributor : Simone Lantz <>
Submitted on : Wednesday, December 7, 2005 - 4:54:16 PM
Last modification on : Thursday, September 17, 2020 - 12:29:08 PM

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E. Armengaud, G. Sigl, F. Miniati. Gamma Ray Astronomy with Magnetized Zevatrons. 2005. ⟨in2p3-00025190⟩



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