Astronomy and Astrophysics – Astrophysics
Scientific paper
2007-09-16
Astronomy and Astrophysics
Astrophysics
10 pages, 10 figures, Invited talk at the International Symposium on Astronomy and Astrophysics of the Extreme Universe, March
Scientific paper
While the completion of the Pierre Auger Observatory (or simply ``Auger'') is still underway, the 5165 km^2.sr.yr integrated acceptance accumulated since the January 1st, 2004 is now significantly larger than what was gathered by the previous experiments dedicated to the detection of ultra-high-energy cosmic rays (UHECRs). We report on the development status of Auger and present some results related to the cosmic-ray energy spectrum, composition and anisotropies, and the photon fraction at ultra-high energy. We briefly discuss the importance of the ankle region to understand the overall phenomenology of cosmic-rays, and mention future enhancements of Auger focusing on this energy range.
for the AUGER Collaboration
Parizot Etienne
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