On the coherent emission of radio frequency radiation from high energy particle showers

被引：1
作者：
Conti, Enrico [1 ]
Sartori, Giorgio [2 ]
机构：
[1] Ist Nazl Fis Nucl, Sez Padova, Via Marzolo 8, I-35131 Padua, Italy
[2] Univ Padua, Dipartimento Fis & Astron G Galilei, Via Marzolo 8, I-35131 Padua, Italy
来源：
INTERNATIONAL JOURNAL OF MODERN PHYSICS D | 2017年 / 26卷 / 08期
关键词：
Coherence; radio frequency; Askaryan effect; extended air shower; cosmic rays; Cherenkov radiation; geosynchrotron radiation; RAY AIR-SHOWERS; CHARGE;
D O I：
10.1142/S0218271817500833
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Extended Air Showers produced by cosmic rays impinging on the earth atmosphere irradiate radio frequency radiation through different mechanisms. Upon certain conditions, the emission has a coherent nature, with the consequence that the emitted power is not proportional to the energy of the primary cosmic rays, but to the energy squared. The effect was predicted in 1962 by Askaryan and it is nowadays experimentally well established and exploited for the detection of ultra high energy cosmic rays. In this paper, we discuss in detail the conditions for coherence, which in literature have been too often taken for granted, and calculate them analytically, finding a formulation which comprehends both the coherent and the incoherent emissions. We apply the result to the Cherenkov effect, obtaining the same conclusions derived by Askaryan, and to the geosynchrotron radiation.
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页数：9
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