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

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

2004-05-26

arxiv.org/abs/astro-ph/0405513v1

Astron.Astrophys. 423 (2004) 415-419

Astronomy and Astrophysics

Astrophysics

5 pages, 2 figures, accepted for publication in Astronomy & Astrophysics

Scientific paper

10.1051/0004-6361:20041021

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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