University of Maryland
Atlantic Building, Room 2400
4:30 PM Monday, October 3, 2005
Coffee, Tea & Snacks 4:15-4:30 PM

Stephane Coutu
Penn State University
Highest Energy Physics with Auger

The Pierre Auger Observatory measures cosmic ray air showers at energies beyond 1018 eV, using a hybrid technique combining nitrogen fluorescence telescopes and a giant array of water Cherenkov detectors covering 3000 km2. The Observatory is under construction in Argentina, and is more than half complete. The array is operated as it grows, and the accumulated event statistics are already comparable to the entire data set accumulated by the AGASA experiment, and quickly catching up with the HiRes Fly's Eye experiment. The science, design and status of the Auger Observatory will be described, and first measurements of the energy spectrum and arrival directions of the highest energy cosmic rays will be presented.

Sponsored by: Department of Physics and the Institute for Physical Science and Technology, University of Maryland. For information call Victoria at (301) 405-4811 or go to the UMD Space Physics group seminar web site.

There is free parking after 4:00 PM in lot B (the big parking garage across the street from the ATL building). There are a limited number of spaces in lot Q next to the new ATL wing with free parking after 4PM even when there is a basketball game on campus.