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Enhancing the cosmic-ray mass sensitivity of air-shower arrays by combining radio and muon detectors

Holt, Ewa M.; Schröder, Frank G.; Haungs, Andreas

Abstract:
The muonic and electromagnetic components of air showers are sensitive to the mass of the primary cosmic particle. The sizes of the components can be measured with particle detectors on ground, and the electromagnetic component in addition indirectly via its radio emission in the atmosphere. The electromagnetic particles do not reach the ground for very inclined showers. On the contrary, the atmosphere is transparent for the radio emission and its footprint on ground increases with the zenith angle. Therefore, the radio technique offers a reliable detection over the full range of zenith angles, and in particular for inclined showers. In this work, the mass sensitivity of a combination of the radio emission with the muons is investigated in a case study for the site of the Pierre Auger Observatory using CORSIKA Monte Carlo simulations of showers in the EeV energy range. It is shown, that the radio-muon combination features superior mass separation power in particular for inclined showers, when compared to established mass observables such as a combination of muons and electrons or the shower maximum X max
Xmax. Accurate measurements of the energy-dependent mass composition of ultra-high energy cosmic rays are essential to understand their still unknown origin. ... mehr

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Verlagsausgabe §
DOI: 10.5445/IR/1000094256
Veröffentlicht am 03.06.2019
Originalveröffentlichung
DOI: 10.1140/epjc/s10052-019-6859-4
Coverbild
Zugehörige Institution(en) am KIT Institut für Kernphysik (IKP)
Publikationstyp Zeitschriftenaufsatz
Jahr 2019
Sprache Englisch
Identifikator ISSN: 1434-6044, 1434-6052
KITopen-ID: 1000094256
HGF-Programm 51.03.04 (POF III, LK 01)
Erschienen in The European physical journal / C
Band 79
Heft 5
Seiten Article: 371
Bemerkung zur Veröffentlichung Gefördert durch SCOAP3
Vorab online veröffentlicht am 29.04.2019
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