IFIR   05409
INSTITUTO DE FISICA DE ROSARIO
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
The cosmic ray energy spectrum and related measurements with the Pierre Auger Observatory
Autor/es:
THE AUGER COLLABORATION (...M.I. MICHELETTI...) (THE LIST IS IN ALPHABETIC ORDER)
Lugar:
Lódz, Polonia
Reunión:
Conferencia; 31st International Cosmic Ray Conference (ICRC); 2009
Resumen:
The flux of cosmic rays above 1018 eV
has been measured with unprecedented precision
using the Pierre Auger Observatory. Two analysis
techniques have been used to extend the spectrum
downwards from 3 × 1018 eV, with the lower energies
being explored using a novel technique that
exploits the hybrid strengths of the instrument.
The systematic uncertainties, and in particular the
influence of the energy resolution on the spectral
shape, are addressed. The spectrum can be described
by a broken power-law of index 3.3 below the
ankle which is measured at lg(Eankle/eV) = 18.6.
Above the ankle the spectrum is described by a
power-law / E-2.6 and a flux suppression with
lg(E1/2/eV) = 19.6.
Keywords: Auger Energy Spectrum