Astronomy and Astrophysics – Astrophysics
Scientific paper
2006-09-03
Braz.J.Phys.36:1184-1193,2006
Astronomy and Astrophysics
Astrophysics
10 pages, 16 figures, Brazilian National Meeting on Particle and Fields 2005
Scientific paper
We review in these notes the status of the construction of the Pierre Auger Observatory and present the first Physics results, based on the data collected during the first year and a half of operation. These results are preliminary, once the work to understand the systematics of the detectors are still underway. We discuss the cosmic ray spectrum above 3 EeV, based on the measurement done using the Surface Detector and the Fluorescence Detector, both, components of the observatory. We discuss, as well, the search for anisotropy near the Galactic Center and the limit on the photon fraction at the highest energies.
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