Analytic Calculation of Radio Emission from Extensive Air Showers subjected to Atmospheric Electric Fields

TL;DR

This paper introduces a semi-analytical code to compute the radio emission footprint of extensive air showers influenced by atmospheric electric fields, aiding in reconstructing electric field profiles.

Contribution

The authors present a novel semi-analytical method for calculating radio footprints that aligns well with detailed microscopic simulations, enabling electric field profile reconstruction.

Findings

Radio footprints match CoREAS simulations

Method accurately reconstructs atmospheric electric fields

Code offers efficient semi-analytical calculations

Abstract

We have developed a code that semi-analytically calculates the radio footprint (intensity and polarization) of an extensive air shower subject to atmospheric electric fields. This can be used to reconstruct the height dependence of atmospheric electric field from the measured radio footprint. The various parameterizations of the spatial extent of the induced currents are based on the results of Monte-Carlo shower simulations. The calculated radio footprints agree well with microscopic CoREAS simulations.