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Is The Giant Radio Galaxy M 87 A Tev Gamma-Ray Emitter?
ASTRONOMY & ASTROPHYSICS, no. 1 (2003): L1-L5
摘要
For the first time an excess of photons above an energy threshold of 730 GeV from the giant radio galaxy M 87 has been measured at a significance level above 4sigma. The data have been taken during the years 1998 and 1999 with the HEGRA stereoscopic system of 5 imaging atmospheric Cherenkov telescopes. The excess of 107.4+/-26.8 events ab...更多
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