Observation of the suppression of the flux of cosmic rays above 4 x 10 (19) eV.

The energy spectrum of cosmic rays above 2.5 x 10;{18} eV, derived from 20,000 events recorded at the Pierre Auger Observatory, is described. The spectral index gamma of the particle flux, J proportional, variantE;{-gamma}, at energies between 4 x 10;{18} eV and 4 x 10;{19} eV is 2.69+/-0.02(stat)+/...

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Bibliographic Details
Main Authors:	Abraham, J, Abreu, P, Aglietta, M, Aguirre, C, Allard, D, Allekotte, I, Allen, J, Allison, P, Alvarez-Muñiz, J, Ambrosio, M, Anchordoqui, L, Andringa, S, Anzalone, A, Aramo, C, Argirò, S, Arisaka, K, Armengaud, E, Arneodo, F, Arqueros, F, Asch, T, Asorey, H, Assis, P, Atulugama, B, Aublin, J, Ave, M
Format:	Journal article
Language:	English
Published:	2008

Observation of the suppression of the flux of cosmic rays above 4 x 10 (19) eV.

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