Title: Exploring the Universe with Balloon-borne Experiments

Dr. Eun-Suk Seo
University of Maryland

Cosmic rays, energetic particles coming from outer space, bring us information about the physical processes that accelerate particles to relativistic energies, about the effects of those particles in driving dynamical processes in our Galaxy, and about the distribution of matter and fields in interstellar space. The energy of these cosmic beams far exceeds energies produced by particle accelerators on Earth. Balloon-borne experiments are currently being used for understanding cosmic ray origin, acceleration and propagation, exploring the supernova acceleration limit, and searching for exotic sources such as dark matter and antimatter. Our on-going effort at Maryland with Balloon-borne Experiments will be presented and challenges of extending precision measurements to highest energy practical will be discussed.

UT Arlington Physics