Cosmicray Physics Group

COLLEGE PARK, Md. -- An international research project conceived by University of Maryland physicist Eun-Suk Seo has discovered an unexpected surplus of cosmic ray high energy electrons that appear to come from a previously unidentified and relatively nearby cosmic source.

The discovery was made using an instrument conceived and modeled by Seo, an associate professor in the Institute for Physical Science and Technology and the department of physics at the University of Maryland. Called the Advanced Thin Ionization Calorimeter, or ATIC, this instrument was flown high above the Antarctic on-board a NASA balloon as part of an ATIC collaboration led by John P. Wefel, a professor in the department of physics & astronomy at LSU
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