Measurement of the cosmic ray energy spectrum using hybrid events of the Pierre Auger Observatory

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dc.contributor.authorSettimo, M.
dc.contributor.authorAbreu, P.
dc.contributor.authorAglietta, M.
dc.contributor.authorAhlers, M.
dc.contributor.authorAhn, E.
dc.contributor.authorAlbuquerque, I.
dc.contributor.authorAllard, D.
dc.contributor.authorAllekotte, I.
dc.contributor.authorAllen, J.
dc.contributor.authorAllison, P.
dc.contributor.authorAlmela, A.
dc.contributor.authorAlvarez Castillo, J.
dc.contributor.authorAlvarez-Muiz, J.
dc.contributor.authorAlves Batista, R.
dc.contributor.authorAmbrosio, M.
dc.contributor.authorAminaei, A.
dc.contributor.authorAnchordoqui, L.
dc.contributor.authorAndring, S.
dc.contributor.authorAnticic, T.
dc.contributor.authorAramo, C.
dc.contributor.authoret al.
dc.date.issued2012
dc.description.abstractThe energy spectrum of ultra-high energy cosmic rays above 1018 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.
dc.description.statementofresponsibilityJ.A. Bellido ... R.W. Clay ... M.J. Cooper ... B.R. Dawson ... G.C. Hill ... V.C. Holmes ... M. Malacari ... J. Sorokin ... P. Wahrlich ... et al. (Pierre Auger Collaboration)
dc.identifier.citationEuropean Physical Journal Plus, 2012; 127(8):87-1-87-15
dc.identifier.doi10.1140/epjp/i2012-12087-9
dc.identifier.issn2190-5444
dc.identifier.issn2190-5444
dc.identifier.orcidBellido, J. [0000-0002-0833-9194]
dc.identifier.orcidClay, R. [0000-0002-9040-9648]
dc.identifier.orcidDawson, B. [0000-0002-4271-3055]
dc.identifier.urihttp://hdl.handle.net/2440/101389
dc.language.isoen
dc.publisherSpringer
dc.relation.grantARC
dc.rights© Società Italiana di Fisica / Springer-Verlag 2012
dc.source.urihttps://doi.org/10.1140/epjp/i2012-12087-9
dc.titleMeasurement of the cosmic ray energy spectrum using hybrid events of the Pierre Auger Observatory
dc.typeJournal article
pubs.publication-statusPublished

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