Measurement of the cosmic ray energy spectrum using hybrid events of the Pierre Auger Observatory (CROSBI ID 226795)
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Podaci o odgovornosti
Settimo, M. ; Abreu, P. ; ... : Antičić, Tome ; ... ; Kadija, Krešo ; ... ; Šuša, Tatjana ; ... ; Ziolkowski, M.
Pierre Auger Collaboration
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Measurement of the cosmic ray energy spectrum using hybrid events of the Pierre Auger Observatory
The energy spectrum of above 1018 eV is measured using the hybrid events collected by the between November 2005 and September 2010. The large exposure of the Observatory allows the measurement of the main features of the energy spectrum with high statistics. Full of the extensive air showers (based on the CORSIKA code) and of the hybrid detector response are adopted here as an independent cross check of the standard analysis (Phys. Lett. B 685, 239 (2010)). The dependence on mass composition and other systematic uncertainties are discussed in detail and, in the full Monte Carlo approach, a region of confidence for flux measurements is defined when all the uncertainties are taken into account. An update is also reported of the energy spectrum obtained by combining the hybrid spectrum and that measured using the surface detector array.
Pierre Auger Observatory ; Monte Carlo simulations ; ultra-high energy cosmic rays
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