Astronomy and Astrophysics – Astrophysics
Scientific paper
2005-08-04
Astropart.Phys.25:242-245,2006
Astronomy and Astrophysics
Astrophysics
8 pages, 2 figures
Scientific paper
10.1016/j.astropartphys.2006.02.
Ultrahigh-energy cosmic rays passing through the central region of the Galaxy interact with starlight and the infrared photons. Both nuclei and protons generate secondary fluxes of photons and neutrinos on their passage through the central region. We compute the fluxes of these secondary particles, the observations of which can be used to improve one's understanding of origin and composition of ultrahigh-energy comic rays, especially if the violation of the Greisen--Zatespin--Kuzmin cutoff is confirmed by the future data.
Kusenko Alexander
Schissel Jason
Stecker Floyd W.
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