Discrepancies in the Monte Carlo simulations of propagation of ultra-high energy cosmic-ray photons in the geomagnetic field

被引：0

作者：

Homola, P. ^{[1
]}

Rygielski, M. ^{[1
]}

机构：

[1] Polish Acad Sci, H Niewodniczanski Inst Nucl Phys, PL-31342 Krakow, Poland

来源：

ASTROPARTICLE PHYSICS | 2013年 / 45卷

关键词：

Ultra-high energy cosmic rays; Extensive air showers; Geomagnetic cascading; Gamma conversion; PRESHOWER; Aires; MaGICS;

D O I：

10.1016/j.astropartphys.2013.02.004

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The discrepancies in the results produced by the two most commonly used Monte Carlo programs for simulation of propagation of ultra-high energy cosmic ray photons in the presence of the geomagnetic field are presented. Although photons have not yet been discovered in the cosmic ray flux at highest energies, the capabilities of the present cosmic ray detectors make their discovery possible, according to the predictions of conventional models, within the next few years. It is therefore necessary to have a reliable and well maintained software for relevant simulations. The results of this paper are important for simulations of propagation of photons at energies above 10(19) eV. Photons of such high energies might interact with the geomagnetic field giving rise to a cascade of particles even above the atmosphere. This effect is called a "preshower effect". The preshower effect is important for air shower evolution and has to be accounted for in full Monte Carlo simulations of propagation of highest energy cosmic-ray photons. In this paper we compare the two most frequently used Monte Carlo codes for preshower simulations: PRESHOWER, used as a stand-alone program or as a part of CORSIKA, and MaGICS, used as a part of AIRES. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：28 / 33

页数：6

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