CANGAROO-III search for Gamma Rays from SN 1987A and the Surrounding Field
Enomoto, R; Bicknell, Geoffrey; Clay, Roger W; Edwards, P G; Gunji, S; Hara, S; Hattori, T; Hayashi, S; Higashi, Y; Hirai, Y; Inoue, K; Kabuki, S; Kajino, F; Katagiri, H; Kawachi, A; Kifune, T; Kiuchi, R; Kubo, H; Kushida, J; Mizukami, T; Mizuniwa, R; Mori, M.; Muraishi, H; Naito, T; Nakamori, T; Nakano, Yukihiro; Nishida, D; Nishijima, K; Ohishi, M; Sakamoto, Y; Seki, A; Stamatescu, V; Suzuki, T; Swaby, D L; Tanimori, T; Thornton, G J; Tokanai, F; Tsuchiya, K; Watanabe, S; Yamada, Y; Yamazaki, E; Yanagita, S; Yoshida, T; Yoshikoshi, T; Yukawa, Y
Optical images of SN 1987A show a triple-ring structure. The inner (dust) ring has recently increased in brightness and in the number of hot spots, suggesting that the supernova shock wave has collided with the dense preexisting circumstellar medium, a scenario supported by radio and X-ray observations. Such a shocked environment is widely expected to result in the acceleration of charged particles and the accompanying emission of very high energy gammarays. Here we report the results of...[Show more]
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