Very high energy gamma rays from the direction of Sagittarius A ∗
نویسندگان
چکیده
We report the detection of a point-like source of very high energy (VHE) γ-rays coincident within 1 of Sgr A, obtained with the H.E.S.S. array of Cherenkov telescopes. The γ-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) · 10−7m−2s−1. The measured flux and spectrum differ substantially from recent results reported in particular by the CANGAROO collaboration.
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تاریخ انتشار 2004