Thunderstorm Observations by Air-Shower Radio Antenna Arrays
W.D. Apel, J.C. Arteaga, L. B\"ahren, K. Bekk, M. Bertaina, P.L., Biermann, J. Bl\"umer, H. Bozdog, I.M. Brancus, P. Buchholz, S. Buitink, E., Cantoni, A. Chiavassa, K. Daumiller, V. de Souza, P. Doll, M. Ender, R., Engel, H. Falcke, M. Finger, D. Fuhrmann, H. Gemmeke, C. Grupen

TL;DR
This paper explores how thunderstorms and lightning affect radio detection of cosmic ray air showers, highlighting the potential for using radio antenna arrays to study atmospheric electric phenomena and improve cosmic ray measurements.
Contribution
It demonstrates the capabilities of EAS radio antenna arrays, specifically LOPES, for studying lightning and electric field effects on cosmic ray radio signals during thunderstorms.
Findings
Electric fields influence radio emission from air showers.
Lightning signals can interfere with cosmic ray detection.
Radio arrays can be used to study lightning development.
Abstract
Relativistic, charged particles present in extensive air showers lead to a coherent emission of radio pulses which are measured to identify the shower initiating high-energy cosmic rays. Especially during thunderstorms, there are additional strong electric fields in the atmosphere, which can lead to further multiplication and acceleration of the charged particles and thus have influence on the form and strength of the radio emission. For a reliable energy reconstruction of the primary cosmic ray by means of the measured radio signal it is very important to understand how electric fields affect the radio emission. In addition, lightning strikes are a prominent source of broadband radio emissions that are visible over very long distances. This, on the one hand, causes difficulties in the detection of the much lower signal of the air shower. On the other hand the recorded signals can be…
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