The measurement of the cosmic ray spectrum above 3 x 10E17 eV with the Pierre Auger Observatory

THE PIERRE AUGER COLLABORATION (AUTOR 434 DE 474); M. TUEROS

Rio de Janeiro

Conferencia; 33rd International Cosmic Ray Conference (ICRC 2013); 2013

International Union of Pure and Applied Physics (IUPAP)

Abstract: The flux of cosmic rays above 3E17 eV has been measured with unprecedented precision at the Pierre 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 an energy range of almost three decades. The hybrid nature of the instrument has been exploited to determine the energy in a data-driven mode with minimal Monte Carlo input. The spectral features are presented in detail and the impact of systematic uncertainties on these features is addressed.