Study on mass composition of extensive air shower with ultra high energy cosmic rays using Q parameter and their muon component

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[1] Moradalizadeh, Maryam
[2] Doostmohammadi, Saeed
[3] Fatemi, Jalil
[4] Arjomand Kermani, Hamid
来源：
Doostmohammadi, Saeed (doostmohammadis@gmail.com) | 1600年 / Politechnica University of Bucharest卷 / 79期
关键词：
Age parameters - Astrophysical sources - Bottom up models - Extensive air showers - High-energy cosmic rays - Lateral Distribution Function. Muon component - Spatial parameters - Ultra high-energy cosmic rays;
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摘要：
Mass Composition (MC) of Cosmic Rays at high energies is one of the most important issues which are significantly related to astrophysical sources. At present work, we have tried to study the spatial parameters, such as age parameter, slope of lateral distribution function of electrons, and muon density of air shower. Each parameter will be discussed separately and also their effect on MC of cosmic rays with energy above 1018eV will be considered. The Yakutsk Extensive Air Shower array data was used in our work. Moreover, the present results can be used to distinguish the popular top-down and bottom-up models of astrophysical sources of high energy cosmic rays.
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