Astronomy and Astrophysics – Astrophysics
Scientific paper
2007-06-26
Astronomy and Astrophysics
Astrophysics
Submission to the 30th International Cosmic Ray Conference, Merida Mexico, July 2007; 4 pages, 4 figures
Scientific paper
The Pierre Auger Observatory is a multi-national project for research on ultra-high energy cosmic rays. The Southern Auger Observatory in Mendoza province, Argentina, is approaching completion in 2007 with an instrumented area of 3,000 km^2. It will accurately measure the spectrum and composition of ultra-high energy cosmic rays up to and beyond the predicted GZK feature. We are obtaining results on the energy spectrum, mass composition and distribution of arrival directions on the southern sky. The Northern Auger Observatory is designed to complete and extend the investigations begun in the South. It will establish charged particle astronomy and thus open a new window into the universe. The distribution of arrival directions of the highest energy events will point the way to unveiling the almost century old mystery of the origin and nature of ultra-high energy cosmic rays. Achieving this goal requires collecting many more events in spite of the steeply falling energy spectrum. The planned northern site will have an instrumented area of 4,000 square miles (10,370 km}^2 in Southeast Colorado, USA. The paper covers the science of charged particle astronomy, the layout and the technical implementation of the Northern Auger Observatory.
for the Pierre Auger Collaboration
Nitz David
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