Double Pair Production by Ultra High Energy Cosmic Ray Photons

Details Double Pair Production by Ultra High Energy Cosmic Ray Photons Double Pair Production by Ultra High Energy Cosmic Ray Photons

2008-12-04

arxiv.org/abs/0812.0859v2

J.Exp.Theor.Phys.108:764-769,2009

Astronomy and Astrophysics

Astrophysics

12 pages, 5 figures (misprints removed, 2 additional figures added in ver. 2)

Scientific paper

10.1134/S1063776109050057

With use of CompHEP package we've made the detailed estimate of the influence of double e+e- pair production by photons (DPP) on the propagation of ultra high energy electromagnetic cascade. We show that in the models in which cosmic ray photons energy reaches few thousand EeV refined DPP analysis may lead to substantial difference in predicted photon spectrum compared to previous rough estimates.

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