Simulation of ultra-high energy photon propagation in the geomagnetic field

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. UHE photons can initiate particle cascades in the geomagnetic field, which leads to significant changes in the subsequent atmospheric shower development. We present a Monte Carlo program allowing detailed studies of conversion and cascading of UHE photons in the geomagnetic field. The program named PRESHOWER can be ... Title of program: PRESHOWER 1.0 Catalogue Id: ADWG_v1_0 Nature of problem Simulation of a cascade of particles initiated by UHE photon passing through the geomagnetic field above the Earth's atmosphere. Versions of this program held in the CPC repository in Mendeley Data ADWG_v1_0; PRESHOWER 1.0; 10.1016/j.cpc.2005.07.001 ADWG_v2_0; PRESHOWER 2.0; 10.1016/j.cpc.2013.01.015 This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2019)