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The Pierre Auger Cosmic Ray Observatory
The Pierre Auger Observatory, located on a vast, high plain in western Argentina, is the world's largest cosmic ray observatory. The objectives of the Observatory are to probe the origin andExpand
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Observation of a large-scale anisotropy in the arrival directions of cosmic rays above 8 × 1018 eV
High-energy particles are extragalactic Cosmic rays are high-energy particles arriving from space; some have energies far beyond those that human-made particle accelerators can achieve. The sourcesExpand
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Improved limit to the diffuse flux of ultrahigh energy neutrinos from the Pierre Auger Observatory
Neutrinos in the cosmic ray flux with energies near 1 EeV and above are detectable with the Surface Detector array (SD) of the Pierre Auger Observatory. We report here on searches through Auger dataExpand
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The Pierre Auger Observatory: Contributions to the 33rd International Cosmic Ray Conference (ICRC 2013)
Contributions of the Pierre Auger Collaboration to the 33rd International Cosmic Ray Conference, Rio de Janeiro, Brazil, July 2013
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Searches for anisotropies in the arrival directions of the highest energy cosmic rays detected by the Pierre Auger Observatory
J. A. Bellido, S. G. Blaess, R. W. Clay, M. J. Cooper, B. R. Dawson, T. D. Grubb, T. A. Harrison, G. C. Hill, M. Malacari, P. H. Nguyen, S. J. Saffi, J. Sorokin, P. van Bodegom are members of TheExpand
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Muons in air showers at the Pierre Auger Observatory: Mean number in highly inclined events
We present the first hybrid measurement of the average muon number in air showers at ultra-high energies, initiated by cosmic rays with zenith angles between $62^\circ$ and $80^\circ$. TheExpand
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Depth of maximum of air-shower profiles at the Pierre Auger Observatory. II. Composition implications
Using the data taken at the Pierre Auger Observatory between December 2004 and December 2012, we have examined the implications of the distributions of depths of atmospheric shower maximum (X-max),Expand
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Large-scale Cosmic-Ray Anisotropies above 4 EeV Measured by the Pierre Auger Observatory
We present a detailed study of the large-scale anisotropies of cosmic rays with energies above 4 EeV measured using the Pierre Auger Observatory. For the energy bins [4, 8] EeV and E >= 8 EeV, theExpand
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An Indication of Anisotropy in Arrival Directions of Ultra-high-energy Cosmic Rays through Comparison to the Flux Pattern of Extragalactic Gamma-Ray Sources
A new analysis of the data set from the Pierre Auger Observatory provides evidence for anisotropy in the arrival directions of ultra-high-energy cosmic rays on an intermediate angular scale, which isExpand
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The Pierre Auger Observatory Upgrade - Preliminary Design Report
The Pierre Auger Observatory has begun a major Upgrade of its already impressive capabilities, with an emphasis on improved mass composition determination using the surface detectors of theExpand
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