Astronomy and Astrophysics – Astrophysics – High Energy Astrophysical Phenomena
Scientific paper
2010-10-26
Nucl. Inst. and Meth. 662 (2012) S175-S178
Astronomy and Astrophysics
Astrophysics
High Energy Astrophysical Phenomena
Proceedings of the ARENA2010 conference, Nantes, France
Scientific paper
10.1016/j.nima.2010.10.127
An ultra-high-energy cosmic ray (UHECR) colliding with the Earth's atmosphere gives rise to an Extensive Air Shower (EAS). Due to different charge separation mechanisms within the thin shower front coherent electromagnetic radiation will be emitted within the radio frequency range. A small deviation of the index of refraction from unity will give rise to Cherenkov radiation up to distances of 100 meters from the shower core and therefore has to be included in a complete description of the radio emission from an EAS. Interference between the different radiation mechanisms, in combination with different polarization behavior will reflect in a lateral distribution function (LDF) depending on the orientation of the observer and a non-trivial fall-off of the radio signal as function of distance to the shower core.
de Vries Krijn D.
Scholten Olaf
Werner Klaus
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