Radio Emission from Cosmic Ray Air Showers based on Shower Simulations: On the Importance of a Realistic Atmospheric Index of Refraction

Details Radio Emission from Cosmic Ray Air Showers based on Shower Simulations: On the Importance of a Realistic Atmospheric Index of Refraction Radio Emission from Cosmic Ray Air Showers based on Shower Simulations: On the Importance of a Realistic Atmospheric Index of Refraction

2012-01-21

arxiv.org/abs/1201.4471v1

Astronomy and Astrophysics

Astrophysics

High Energy Astrophysical Phenomena

12 pages, 20 figures

Scientific paper

We present a macroscopic calculation of coherent electro-magnetic radiation from air showers initiated by ultra-high energy cosmic rays, based on currents obtained from three-dimensional Monte Carlo simulations of air showers in a realistic geo-magnetic field. We discuss the importance of a correct treatment of the index of refraction in air, given by the law of Gladstone and Dale, which affects the pulses enormously for certain configurations, compared to a simplified treatment using a constant index. We also provide some information about the numerical procedures referred to as EVA 1.0.

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