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Hayashi, S. Gunji, S. Hara, S. Kabuki, S. Watanabe, S. Yanagita, T. Hara, T. Hattori, T. Kifune, T. Kurihara, T. Naito, T. Nakase, T. Tanimori, T. Uchida, T. Yamaoka, T. Yoshida, T. Yoshikoshi, Y. Doi, Y. Matsubara, Y. Miyashita, Y. Mizumoto, Y. Muraki","submitted_at":"2009-09-01T10:04:24Z","abstract_excerpt":"SS433, located at the center of the supernova remnant W50, is a close proximity binary system consisting of a compact star and a normal star. Jets of material are directed outwards from the vicinity of the compact star symmetrically to the east and west. Non-thermal hard X-ray emission is detected from lobes lying on both sides. Shock accelerated electrons are expected to generate sub-TeV gamma rays through the inverse-Compton process in the lobes. 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