Influence of atmospheric electric fields on the radio emission from extensive air showers

T. N. G. Trinh, O. Scholten, S. Buitink, A. M. van den Berg, A. Corstanje, U. Ebert, J. E. Enriquez, H. Falcke, J. R. Horandel, C. Köhn, A. Nelles, J. P. Rachen, L. Rossetto, C. Rutjes, P. Schellart, S. Thoudam, S. ter Veen, K. D. de Vries

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The atmospheric electric fields in thunderclouds have been shown to significantly modify the intensity and polarization patterns of the radio footprint of cosmic-ray-induced extensive air showers. Simulations indicated a very nonlinear dependence of the signal strength in the frequency window of 30-80 MHz on the magnitude of the atmospheric electric field. In this work we present an explanation of this dependence based on Monte Carlo simulations, supported by arguments based on electron dynamics in air showers and expressed in terms of a simplified model. We show that by extending the frequency window to lower frequencies, additional sensitivity to the atmospheric electric field is obtained.
Original languageEnglish
Article number023003
JournalPhysical Review B
Issue number2
Number of pages17
Publication statusPublished - 2016

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Published by the American Physical Society under the terms of the Creative commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.


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