TeV Gamma-Ray Observations of the Galactic Center

By K. Kosack, H. Badran, I. Bond, P. Boyle, S. Bradbury, J. Buckley, D. Carter-Lewis, O. Celik, V. Connaughton, W. Cui and 59 more. 2004

158 citations recorded by the source corpus.

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 σ. The measured excess corresponds to an integral flux of 1.6 × 10-8 ± 0.5 × 10-8 (stat) ± 0.3 × 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.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/22b8ef2e35aa18aaa3e9ccae7b60331189f435e1

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In Astronomy and Astrophysics

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In Nuclear and High Energy Physics

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Citations in the corpus

• Very high-energy gamma rays from the direction of Sagittarius A* (2004, methodology): “At higher energies, above 2.8 TeV, a marginal detection with a significance of 3.7 σ resulting from 26 h of large-zenith-angle observations in the years 1995 through 2003 was reported by the Whipple collaboration (Kosack et al. 2004), consistent with Sgr A∗ within the 15′ 95% C.L. error circle.”