12-20 July 2017
Asia/Seoul timezone
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BEXCO - Room A(101/102)

[CRI267] The cosmic ray energy spectrum measured by the Pierre Auger Observatory


  • Francesco FENU

Primary authors


We present an update of the cosmic ray energy spectrum measured from 3*10^17 eV up to the most extreme energies at the Pierre Auger Observatory. This large energy range can be covered by combining data from the surface detector (subdividing the events in 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. The huge amount of data collected to date, with a total exposure exceeding 60000 km^2 sr yr, relies 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.