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Sensitivity of AugerPrime to the masses of ultra-high-energy cosmic rays

Schmidt, David

Abstract:
A number of conundrums endure regarding the very highest energy cosmic rays measured at Earth. For one, their sources remain shrouded in mystery with attempts at back-tracing these particles to their origins confounded by deflections in galactic and extra-galactic magnetic fields. The region in energy for the emergence of the extra-galactic contribution remains unclear, and each hypothesis is accompanied by an additional set of complications to address. The suppression of the flux at the highest energies, once explainable by photo-pion production through interactions with the cosmic microwave background, has been placed under scrutiny by measurements of an increasingly heavier composition above the ankle, a region which was thought to be dominated by protons just a little over a decade ago. Relatedly, the relative roles of photo-disintegration and the maximum rigidity achievable by nearby extragalactic sources in defining features of the energy spectrum are unclear. A deficit in the number of muons predicted by simulations of extensive air showers using the LHC-tuned hadronic interaction models also remains unexplained. Knowledge of the energy dependencies of the elemental abundances of cosmic rays would be highly beneficial in answering each of these questions and numerous others.
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DOI: 10.5445/IR/1000093730
Veröffentlicht am 23.04.2019
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Kernphysik (IKP)
Institut für Experimentelle Teilchenphysik (ETP)
Publikationstyp Hochschulschrift
Publikationsjahr 2019
Sprache Englisch
Identifikator KITopen-ID: 1000093730
HGF-Programm 51.03.03 (POF III, LK 01)
Kosmische Strahlung Auger
Verlag Karlsruhe
Umfang VIII, 101 S.
Abschlussart Dissertation
Fakultät Fakultät für Physik (PHYSIK)
Institut Institut für Experimentelle Teilchenphysik (ETP)
Prüfungsdatum 29.06.2018
Referent/Betreuer Prof. J. Blümer (KIT); Prof. A. Etchegoyen (UNSAM)
Bemerkung zur Veröffentlichung Zugl.: Universidad Nacional de San Martín (UNSAM), Diss.
Schlagwörter cosmic rays, ultra-high-energy cosmic rays, Pierre Auger Observatory, Auger, AugerPrime, mass
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