29 July 2015 to 6 August 2015
World Forum
Europe/Amsterdam timezone

Combined fit of spectrum and composition data as measured by the Pierre Auger Observatory

3 Aug 2015, 14:00
15m
World Forum Theater (World Forum)

World Forum Theater

World Forum

Churchillplein 10 2517 JW Den Haag The Netherlands
Oral contribution CR-EX Parallel CR13 EX EAS

Speaker

Mr Armando di Matteo (INFN and University of L'Aquila)

Description

We present a combined fit of both flux and composition of ultra-high energy cosmic rays as measured by the Pierre Auger Observatory. The fit has been performed for energies above $5{\times}10^{18}$ eV, the region of the all-particle spectrum above the so-called ``ankle'' feature. A simple astrophysical model has been adopted, consisting of identical sources, injecting nuclei with a rigidity dependent mechanism and uniformly distributed in a comoving volume. The solutions that have been found suggest a source model characterized by relatively low maximum injection energies and hard spectral indices. The impact of different sources of systematic uncertainties in the above result is discussed.
Registration number following "ICRC2015-I/" 237
Collaboration Pierre Auger

Primary author

Mr Armando di Matteo (INFN and University of L'Aquila)

Presentation materials