Volume 301 - 35th International Cosmic Ray Conference (ICRC2017) - Session Cosmic-Ray Indirect. CRI-properties of CRs at high energies (anisotropy, energy, mass)
The cosmic ray energy spectrum measured using the Pierre Auger Observatory
F. Fenu* on behalf of the Pierre Auger Collaboration
*corresponding author
Full text: pdf
Pre-published on: August 16, 2017
Published on: August 03, 2018
Abstract
We present an update of the cosmic ray energy spectrum measured from $3{\times}10^{17}$ eV to over $10^{20}$ eV at the Pierre Auger Observatory.
This energy range is covered by combining data from the surface detector (subdividing the events into a vertical and a horizontal data set), from a denser array of stations and from hybrid events simultaneously recorded by the surface and the fluorescence detectors.
Data collected to date, with a total exposure exceeding 67,000 $\rm km^2$ sr yr, rely on the energy scale provided by the fluorescence detector.
The spectral features, and the impact of systematic uncertainties on their significance, are discussed in detail.
DOI: https://doi.org/10.22323/1.301.0486
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