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arXiv 1502.02117astro-ph.HEastro-ph.IM
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从cosmic ray诱发的空气簇射反射无线电信号的模拟

Simulations of reflected radio signals from cosmic ray induced air showers

Jaime Alvarez-Muñiz, Washington R. Carvalho, Daniel García-Fernández, Harm Schoorlemmer, Enrique Zas

摘要:

本文计算了考虑地球表面反射的超高能宇宙射线引起的大范围空气簇射发射的相干射电脉冲。结果已经获得了一个模拟程序,计算在表面平面反射后从簇射粒子的贡献。详细讨论了辐射的性质,强调反射的影响。的频谱的形状被示出是密切相关的观察者相对于簇射轴的角度,在切伦科夫方向变得最难。在一个固定的观察角度的通量的强度示出的比例与初级粒子能量的平方非常好的精度指示的相干方面的排放。本文的模拟方法为气球和卫星对地观测实验的能量重建提供了依据。它们也可以用于现有和未来实验方案的专门研究。

英文摘要:

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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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