Journal
ASTROPHYSICAL JOURNAL
Volume 608, Issue 2, Pages L97-L100Publisher
IOP PUBLISHING LTD
DOI: 10.1086/422469
Keywords
dark matter; Galaxy : center; Galaxy : nucleus; gamma rays : observations
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We report a possible detection of TeV gamma rays from the Galactic center by the Whipple 10 m gamma-ray telescope. Twenty-six hours of data were taken over an extended period from 1995 through 2003 resulting in a total significance of 3.7 sigma. The measured excess corresponds to an integral flux of 1.6 x 10(-8) +/- 0.5 x 10(-8) (stat) +/- 0.3 x 10(-8) (sys) photons m(-2) s(-1) above an energy of 2.8 TeV, roughly 40% of the flux from the Crab Nebula at this energy. The 95% confidence region has an angular extent of about 15' and includes the position of Sgr A*. The detection is consistent with a point source and shows no evidence of variability.
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