Progress of Theoretical Physics Supplement No. 151, 2003 85 CANGAROO Project for High-Energy Gamma-Ray Astrophysics

Astrophyisical motivations, recent status and results from the international CANGA-ROO project in Woomera, South Australia are described. Since 1990, with ground-based gamma-ray telecopes using the imaging Cherenkov technique, we are exploring the highenergy phenomena in the Universe and providing new insights to active and extreme astrophysical objects by its observational data at the highest end of photon spectrum. CANGAROO is an acronym for Collaboration between Australia and Nippon (Japan) for a Gamma-Ray Observatory in the Outback. We started this international project in 1990 with a 3.8m telescope originally developed for lunar ranging, and we equipped it with a fine-resolution Cherenkov imaging camera. 1) Now an array of fou