Simulation of Ultra-High Energy Photon Propagation in the Geomagnetic Field
arXiv:astro-ph/0311442 · doi:10.1016/j.cpc.2005.07.001
Abstract
The identification of primary photons or specifying stringent limits on the photon flux is of major importance for understanding the origin of ultra-high energy (UHE) cosmic rays. We present a new Monte Carlo program allowing detailed studies of conversion and cascading of UHE photons in the geomagnetic field. The program named PRESHOWER can be used both as an independent tool or together with a shower simulation code. With the stand-alone version of the code it is possible to investigate various properties of the particle cascade induced by UHE photons interacting in the Earth's magnetic field before entering the Earth's atmosphere. Combining this program with an extensive air shower simulation code such as CORSIKA offers the possibility of investigating signatures of photon-initiated showers. In particular, features can be studied that help to discern such showers from the ones induced by hadrons. As an illustration, calculations for the conditions of the southern part of the Pierre Auger Observatory are presented.
arXiv comment41 pages, 9 figures, added references in introduction, corrected energy in row 1 of Table 3, extended caption of Table 1
References in corpus (4)
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