期刊
ASTRONOMY & ASTROPHYSICS
卷 425, 期 1, 页码 L13-L17出版社
EDP SCIENCES S A
DOI: 10.1051/0004-6361:200400055
关键词
gamma-rays : observations; Galaxy : centre
We report the detection of a point-like source of very high energy (VHE) gamma-rays coincident within 1' of Sgr A* obtained with the HESS array of Cherenkov telescopes. The gamma-rays exhibit a power-law energy spectrum with a spectral index of -2.2+/-0.09+/-0.15 and a flux above the 165 GeV threshold of (1.82+/-0.22)x10(-7) m(-2) s(-1). The measured flux and spectrum differ substantially from recent results reported in particular by the CANGAROO collaboration.
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