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Estimates of the Cosmic-Ray Composition with the Pierre Auger Observatory

Pierre Auger Collaboration; Unger, Michael

Abstract (englisch):
We present measurements from the Pierre Auger Observatory related to mass composition of ultra-high energy cosmic rays.

Using the fluorescence telescopes of the Observatory we determine the
distribution of shower maxima (Xmax) from 10^17.2 to 10^19.6 eV and
derive estimates of the mean and variance of the average logarithmic
mass of cosmic rays. The fraction of p, He, N and Fe nuclei as a
function of energy is derived by fitting the Xmax distribution with
templates from air shower simulations using the most recent version of
LHC-tuned hadronic interaction models.

Furthermore, we will discuss the analysis of the time structure of the
signals from air showers recorded with the water-Cherenkov detectors
to study the mass composition from 10^17.5 to 10^20 eV.


Zugehörige Institution(en) am KIT Institut für Kernphysik (IKP)
Publikationstyp Vortrag
Jahr 2018
Sprache Englisch
Identifikator KITopen-ID: 1000086092
HGF-Programm 51.03.03 (POF III, LK 01)
Veranstaltung Ultra High Energy Cosmic Rays 2018, Ecole Supérieure de Chimie, Paris, 8th-12th October 2018
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