Detection of Sub-TeV Gamma Rays from the Galactic Center Direction by CANGAROO-II

Tsuchiya, K; Enomoto, R; Ksenofontov, L; Mori, Masaki; Naito, T; Asahara, A; Bicknell, Geoffrey; Clay, Roger W; Doi, Y; Edwards, Philip G; Gunji, S; Hara, Shinji; Hara, T; Hattori, T; Hayashi, Sei; Itoh, Chie; Kabuki, S; Kajino, F; Katagiri, H; Kawachi, A; Kifune, Tadashi; Kubo, H; Kuraeva, T L; Kurosaka, R; Kushida, J; Matsubara, Y; Miyashita, Y; Mizumoto, Y; Moro, H; Muraishi, H; Muraki, Y; Nakase, T; Nishida, D; Nishijima, K; Ohishi, M; Okumura, K; Patterson, Joseph R; Protheroe, Raymond; Sakamoto, N; Sakurazawa, K; Swaby, D L; Tanimori, T; Tanimura, H; Thornton, G J; Tokanai, F; Uchida, T; Watanabe, S; Yamaoka, T; Yanagita, S; Yoshida, T; Yoshikoshi, T

Detection of Sub-TeV Gamma Rays from the Galactic Center Direction by CANGAROO-II

Date

2004

Authors

Tsuchiya, K

Enomoto, R

Ksenofontov, L

Mori, Masaki

Naito, T

Asahara, A

Bicknell, Geoffrey

Clay, Roger W

Doi, Y

Edwards, Philip G

Publisher

IOP Publishing

Abstract

We have detected sub-TeV gamma-ray emission from the direction of the Galactic center (GC) using the CANGAROO-II Imaging Atmospheric Cerenkov Telescope. We detected a statistically significant excess at energies greater than 250 GeV. The flux was 1 order