Double Pair Production by Ultra High Energy Cosmic Ray Photons
Astrophysics
2009-06-25 v2
Abstract
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.
Keywords
Cite
@article{arxiv.0812.0859,
title = {Double Pair Production by Ultra High Energy Cosmic Ray Photons},
author = {S. V. Demidov and O. E. Kalashev},
journal= {arXiv preprint arXiv:0812.0859},
year = {2009}
}
Comments
12 pages, 5 figures (misprints removed, 2 additional figures added in ver. 2)