INVESTIGADORES
HANSEN Patricia Maria
artículos
Título:
Measurement of the cosmic ray spectrum above 4 X10^18 eV using inclined events detected with the Pierre Auger Observatory
Autor/es:
THE PIERRE AUGER COLLABORATION (P HANSEN PERTENECE A LA COLABORACIÓN AUGER)
Revista:
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
Editorial:
IOP PUBLISHING LTD
Referencias:
Lugar: Londres; Año: 2015 vol. 08 p. 1 - 22
ISSN:
1475-7516
Resumen:
A measurement of the cosmic-ray spectrum for energies exceeding 4x10^18 eV is presented, which is based on the analysis of showers with zenith angles greater than 60 detected with the Pierre Auger Observatory between 1 January 2004 and 31 December 2013. The measured spectrum confirms a flux suppression at the highest energies.Above 5.310^18 eV, the "ankle", the flux can be described by a power law E-gamma with index gamma= 2.7+-0.02 (stat)+-0.1 (sys) followed by a smooth suppression region. For the energy (Es) at which the spectral flux has fallen to one-half of its extrapolated value in the absenceof suppression, we nd Es = (5:12 0:25 (stat)+1.0-1.2 (sys))10^19 eV.
