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Evidence for TeV gamma ray emission from TeV J2032+4130 in Whipple archival data

Abstract : A reanalysis of data taken on the Cygnus region in 1989-90 using the Whipple Observatory atmospheric Cherenkov imaging telescope confirms the existence of the TeV J2032+4130 source reported by the Crimean Astrophysical Observatory and published by the HEGRA Collaboration. The significance at the a priori HEGRA position is 3.3sigma. The peak signal was found at RA=20hr32min, Dec=+41deg33min. This is 0.6deg north of Cygnus X-3 which was the original target of the observations. The flux level (12% of the level of the Crab Nebula) is intermediate between the two later observations and suggests that the TeV source is variable.
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http://hal.in2p3.fr/in2p3-00022201
Contributor : Simone Lantz <>
Submitted on : Thursday, December 14, 2006 - 3:50:17 PM
Last modification on : Thursday, January 7, 2021 - 5:56:02 PM

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M.J. Lang, D.A. Carter-Lewis, D.J. Fegan, S.J. Fegan, A.M. Hillas, et al.. Evidence for TeV gamma ray emission from TeV J2032+4130 in Whipple archival data. Astronomy and Astrophysics - A&A, EDP Sciences, 2004, 423, pp.415-419. ⟨10.1051/0004-6361:20041021⟩. ⟨in2p3-00022201⟩

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