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Simulation of the Radiation Energy Release in Air Showers

Glaser, Christian; Erdmann, Martin; Hörandel, Jörg R.; Huege, Tim; Schulz, Johannes

Abstract (englisch): A simulation study of the energy released by extensive air showers in the form of MHz radiation is performed using the CoREAS simulation code. We develop an efficient method to extract this radiation energy from air-shower simulations. We determine the longitudinal profile of the radiation energy release and compare it to the longitudinal profile of the energy deposit by the electromagnetic component of the air shower. We find that the radiation energy corrected for the geometric dependence of the geomagnetic emission scales quadratically with the energy in the electromagnetic component of the air shower with a second order dependency on the atmospheric density at the position of the maximum of the shower development Xmax. In a measurement where Xmax is not accessible, this second order dependence can be approximated using the zenith angle of the incoming direction of the air shower with only a minor deterioration in accuracy. This method results in an intrinsic uncertainty of 4% with respect to the electromagnetic shower energy which is well below current experimental uncertainties.

Zugehörige Institution(en) am KIT Institut für Kernphysik (IKP)
Publikationstyp Proceedingsbeitrag
Jahr 2017
Sprache Englisch
Identifikator DOI: 10.1051/epjconf/201713501016
ISBN: 978-2-7598-9015-6
ISSN: 2100-014X
KITopen ID: 1000068817
HGF-Programm 51.03.04; LK 01
Erschienen in 7th International Conference on Acoustic and Radio EeV Neutrino Detection Activities (ARENA), Groningen, The Netherlands, June 7-10, 2016. Ed.: S. Buitink
Seiten 01016/1-4
Serie The European physical journal / Web of Conferences ; 135
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