CANGAROO-III observation of gamma rays from the Galactic Center

The detection of very high energy gamma‐ray from the direction of the Galactic Center was reported by the CANGAROO‐II and Whipple in 2004. Soon H.E.S.S. detected gamma‐ray above 165 GeV with a quite high significance, of which the photon index was harder than the CANGAROO‐II result. In 2005, MAGIC observation detected a differential gamma‐ray flux consistent with a steady, hard‐slope power law of H.E.S.S. result. We observed the Galactic center in 2005 using CANAROO‐III stereoscopic telescopes and detected the gamma‐ray emission with a significance level of 5.4 sigma above 650 GeV. Its photon spectrum and image were consistent with both H.E.S.S. and MAGIC results.