Simulations of reflected radio signals from cosmic ray induced air showers

被引：17
|
作者：
Alvarez-Muniz, Jaime [1 ,2 ]
Carvalho, Washington R., Jr. [1 ,2 ]
Garcia-Fernandez, Daniel [1 ,2 ]
Schoorlemmer, Harm [3 ]
Zas, Enrique [1 ,2 ]
机构：
[1] Univ Santiago de Compostela, Dept Fis Particulas, Santiago De Compostela 15782, Spain
[2] Univ Santiago de Compostela, Inst Galego Fis Altas Enerxias, Santiago De Compostela 15782, Spain
[3] Univ Hawaii Manoa, Dept Phys & Astron, Honolulu, HI 96822 USA
来源：
ASTROPARTICLE PHYSICS | 2015年 / 66卷
关键词：
Cosmic rays; Air shower; Radio detection; ENERGY; RADIATION; EMISSION; PULSES;
D O I：
10.1016/j.astropartphys.2014.12.005
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We present the calculation of coherent radio pulses emitted by extensive air showers induced by ultra-high energy cosmic rays accounting for reflection on the Earth's surface. Results have been obtained with a simulation program that calculates the contributions from shower particles after reflection at a surface plane. The properties of the radiation are discussed in detail emphasizing the effects of reflection. The shape of the frequency spectrum is shown to be closely related to the angle of the observer with respect to shower axis, becoming hardest in the Cherenkov direction. The intensity of the flux at a fixed observation angle is shown to scale with the square of the primary particle energy to very good accuracy indicating the coherent aspect of the emission. The simulation methods of this paper provide the foundations for energy reconstruction of experiments looking at the Earth from balloons and satellites. They can also be used in dedicated studies of existing and future experimental proposals. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：31 / 38
页数：8
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