EPJ Web Conf.
Volume 216, 20198th International Conference on Acoustic and Radio EeV Neutrino Detection Activities (ARENA 2018)
|Number of page(s)||3|
|Published online||24 September 2019|
Systematic uncertainty of first-principle calculations of the radiation energy emitted by extensive air showers
Bergische Universität Wuppertal, Gauβstraβe 20, 42119
2 RWTH Aachen University, III. Physikalisches Institut A, Aachen, Germany
3 Department of Physics and Astronomy, University of California, Irvine, USA
4 Karlsruher Institut für Technologie, Institut für Kernphysik, Postfach 3640, 76021 Karlsruhe, Germany
5 Vrije Universiteit Brussel, Astrophysical Institute, Pleinlaan 2, 1050 Brussels, Belgium
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Published online: 24 September 2019
The energy of extensive air showers can be determined from the energy radiated in the form of radio signals. The so-called radiation energy can be predicted with modern simulation codes using first-principle calculations without the need of free parameters. Here, we verify the consistency of radiation energy calculations by comparing a large set of Monte Carlo simulations made with the two codes CoREAS and ZHAireS. For the frequency band of 30 — 80 MHz, typically used by many current radio detectors, we observe a difference in the radiation energy prediction of 5.2%. This corresponds to a radio emission modelling uncertainty of 2.6% for thedetermination of the absolute cosmic-ray energy scale. Hence, radio detection offers the opportunity for a precise, accurate and independent measurement of the absolute energy of cosmic rays.
© The Authors, published by EDP Sciences, 2019
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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