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Arganda, E. and Arqueros Martínez, Fernando and Blanco Ramos, Francisco and García Pinto, Diego and Minaya Flores, Ignacio Andrés and Ortiz Ramis, Montserrat and Rosado Vélez, Jaime and Vázquez Peñas, José Ramón (2012) Measurement of the cosmic ray energy spectrum using hybrid events of the Pierre Auger Observatory. European physical journal plus, 127 (8). ISSN 2190-5444
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Official URL: http://dx.doi.org/10.1140/epjp/i2012-12087-9
Abstract
The energy spectrum of ultra-high energy cosmic rays above 10(18)eV is measured using the hybrid events collected by the Pierre Auger Observatory 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 Monte Carlo simulations 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.
Item Type: | Article |
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Additional Information: | © Societá Italiana di Fisica / Springer-Verlag 2012. |
Uncontrolled Keywords: | Extensive air showers; Fluorescence detector; Surface detector; Simulation; Array; reconstruction; Profiles; Trigger. |
Subjects: | Sciences > Physics > Nuclear physics |
ID Code: | 38074 |
Deposited On: | 17 Jun 2016 17:16 |
Last Modified: | 10 Dec 2018 14:58 |
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