Calculation methods for radio pulses from high energy showers -: art. no. 063001

被引:72
作者
Alvarez-Muñiz, J
Vazquez, RA
Zas, E
机构
[1] Univ Wisconsin, Dept Phys, Madison, WI 53706 USA
[2] Univ Santiago, Dept Fis Particulas, E-15706 Santiago De Compostela, Spain
来源
PHYSICAL REVIEW D | 2000年 / 62卷 / 06期
关键词
D O I
10.1103/PhysRevD.62.063001
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We present an approximation for the numerical calculation of Cerenkov radio pulses in the Fraunhofer limit from very high energy showers in dense media. We compare it to full Monte Carlo simulations in ice, studying its range of applicability, and show how it can be extended with a simple algorithm. The approximation reproduces well the angular distribution of the pulse around the Cerenkov direction. An improved parametrization for the frequency spectrum in the Cerenkov direction is given for phenomenological applications. We extend the method to study the pulses produced by showers at distances at which the Fraunhofer limit does not apply, and give the ranges of distances and frequencies in which Fraunhofer approximation is good enough for interpreting future experimental data. Our results are relevant for the detection of very high energy neutrinos with this technique.
引用
收藏
页码:0630011 / 0630019
页数:9
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