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Please use this identifier to cite or link to this item: https://hdl.handle.net/2440/47607
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dc.contributor.authorAbraham, J.-
dc.contributor.authorAbreu, P.-
dc.contributor.authorAglietta, M.-
dc.contributor.authorAguirre, I.-
dc.contributor.authorAllard, D.-
dc.contributor.authorAllekotte, I.-
dc.contributor.authorAllen, J.-
dc.contributor.authorAllison, P.-
dc.contributor.authorAlvarez-Muniz, J.-
dc.contributor.authorAmbrosio, M.-
dc.contributor.authorAnchordoqui, L.-
dc.contributor.authorAndringa, S.-
dc.contributor.authorAnzalone, A.-
dc.contributor.authorAramo, C.-
dc.contributor.authorArgiro, S.-
dc.contributor.authorArisaka, K.-
dc.contributor.authorArmengaud, E.-
dc.contributor.authorArneodo, F.-
dc.contributor.authorArqueros, F.-
dc.contributor.authorAsch, T.-
dc.contributor.authoret al.-
dc.date.issued2008-
dc.identifier.citationPhysical Review Letters, 2008; 101(6):061101-1-061101-7-
dc.identifier.issn0031-9007-
dc.identifier.issn1079-7114-
dc.identifier.urihttp://hdl.handle.net/2440/47607-
dc.description.abstractThe energy spectrum of cosmic rays above 2.5×1018eV, derived from 20000 events recorded at the Pierre Auger Observatory, is described. The spectral index γ of the particle flux, JE-γ, at energies between 4×1018eV and 4×1019eV is 2.69±0.02(stat)±0.06(syst), steepening to 4.2±0.4(stat)±0.06(syst) at higher energies. The hypothesis of a single power law is rejected with a significance greater than 6 standard deviations. The data are consistent with the prediction by Greisen and by Zatsepin and Kuz'min.-
dc.description.statementofresponsibilityJ. Abraham...R. W. Clay...B. R. Dawson... et al. (The Pierre Auger Collaboration)-
dc.language.isoen-
dc.publisherAmerican Physical Soc-
dc.rights©2008 American Physical Society-
dc.source.urihttp://dx.doi.org/10.1103/physrevlett.101.061101-
dc.subjectPierre Auger Collaboration-
dc.titleObservation of the suppression of the flux of cosmic rays above 4×10¹⁹ eV-
dc.title.alternativeObservation of the suppression of the flux of cosmic rays above 4x10(19) eV-
dc.typeJournal article-
dc.identifier.doi10.1103/PhysRevLett.101.061101-
dc.relation.grantARC-
dc.relation.grantMSMT-CR LA08016-
dc.relation.grantLC527-
dc.relation.grant1M06002-
pubs.publication-statusPublished-
dc.identifier.orcidBellido Caceres, J. [0000-0002-0833-9194]-
dc.identifier.orcidClay, R. [0000-0002-9040-9648]-
dc.identifier.orcidDawson, B. [0000-0002-4271-3055]-
Appears in Collections:Aurora harvest
Physics publications

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