# Hybrid Universality Model Development and Air Shower Reconstruction for the Pierre Auger Observatory

Hulsman, Johannes

##### Abstract (englisch):
Cosmic rays have been studied for more than 100 years, providing valuable information on the measured spectrum and theories to particle propagation and interaction. Potential sources, which could also serve possible acceleration mechanisms, include active galactic nuclei, gamma-ray bursts and supernova shock fronts. Due to our increased understanding of cosmic ray physics and technological improvements on a detector level, measurements have progressed towards even higher energies than before. To understand their origin, it is pertinent to understand their mass composition, energy spectrum and arrival direction. Laboratory-based particle accelerators and low energy cosmic ray experiments have elucidated our understanding of particle interaction, providing insight on possible acceleration and propagation models. However, ultra-high cosmic rays at $10^{20}$ eV are significantly above the highest energies achievable by the LHC (about two orders of magnitude between the center-of-mass energies). They are also very rare; with an incident flux of 1 particle per $km^{2}$ per century at $10^{20}$ eV. Accelerator-based models can be extrapolated to the highest energies. ... mehr

 Zugehörige Institution(en) am KIT Institut für Kernphysik (IKP) Publikationstyp Hochschulschrift Publikationsdatum 06.04.2020 Sprache Englisch Identifikator KITopen-ID: 1000118009 HGF-Programm 51.03.03 (POF III, LK 01) Kosmische Strahlung Auger Verlag Karlsruher Institut für Technologie (KIT) Umfang XVIII, 206 S. Art der Arbeit Dissertation Fakultät Fakultät für Physik (PHYSIK) Institut Institut für Kernphysik (IKP) Prüfungsdatum 20.12.2019 Referent/Betreuer Prof. A. D. Supanitsky (UNSAM); Prof. J. Blümer (KIT) Bemerkung zur Veröffentlichung Zugl.: Universidad Nacional de San Martín (UNSAM), Instituto de Tecnología "Prof. Jorge A. Sábato", Diss. Schlagwörter Air Shower Universality, Signal Model, Time Model, WCD, MD, AMIGA, Infill, WCD+MD Reconstruction
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