The measurement of the cosmic ray spectrum above 3 x 10^17 eV with the Pierre Auger Observatory

THE PIERRE AUGER COLLABORATION.; S. J. SCIUTTO

Rio de Janeiro

Conferencia; 33rd International Cosmic Ray Conference; 2013

The flux of cosmic rays above 31017 eV has been measured with unprecedented precision at thePierre Auger Observatory based on data in the period between 1 January 2004 and 31 December 2012. The uniquecombination of different nested detector arrangements has been used to record cosmic ray data spanning over anenergy range of almost three decades. The hybrid nature of the instrument has been exploited to determine theenergy in a data-driven mode with minimal Monte Carlo input. The spectral features are presented in detail andthe impact of systematic uncertainties on these features is addressed.