CANGAROO-III Search for Gamma Rays from Kepler's Supernova Remnant

R. Enomoto, Y. Higashi, T. Yoshida, T. Tanimori, G. V. Bicknell, R. W. Clay, P. G. Edwards, S. Gunji, S. Hara, T. Hara, T. Hattori, S. Hayashi, Y. Hirai, K. Inoue, S. Kabuki, F. Kajino, H. Katagiri, A. Kawachi, T. Kifune, R. Kiuchi, H. Kubo, J. Kushida, Y. Matsubara, T. Mizukami, Y. Mizumoto, R. Mizuniwa, M. Mori, H. Muraishi, Y. Muraki, T. Naito, T. Nakamori, S. Nakano, D. Nishida, K. Nishijima, M. Ohishi, Y. Sakamoto, A. Seki, V. Stamatescu, T. Suzuki, D. L. Swaby, G. Thornton, F. Tokanai, K. Tsuchiya, S. Watanabe, Y. Yamada, E. Yamazaki, S. Yanagita, T. Yoshikoshi, and Y. Yukawa

(Astrophys. J. in press)
Kepler's supernova remnant is a special type-Ia in the meaning of historically observed (400 years old). It has been studied well from both observational and theoretical aspects. Morphological signatures have been observed in radio, infrared, optical and X-ray bands. Some theories have predicted a measurable flux at TeV-gamma rays by the Imaging Cherenkov Atmospheric Telescopes. Here, we report on observations carried out in 2005 April by CANGAROO-III. We did not observe any statistically significant excess around this region. Limitation on the allowed parameter range in cosmic-ray theory are discussed.