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

被引：29

作者：

Lang, MJ ^{[1
]}

Carter-Lewis, DA

Fegan, DJ

Fegan, SJ

Hillas, AM

Lamb, RC

Punch, M

Reynolds, PT

Weekes, TC

机构：

[1] Natl Univ Ireland Univ Coll Galway, Dept Phys, Galway, Ireland

[2] Iowa State Univ Sci & Technol, Dept Phys & Astron, Ames, IA 50011 USA

[3] Natl Univ Ireland Univ Coll Dublin, Dept Expt Phys, Dublin 4, Ireland

[4] Harvard Smithsonian CfA, Fred Lawrence Whipple Observ, Amado, AZ 85645 USA

[5] Univ Leeds, Dept Phys & Astron, Leeds LS2 9JT, W Yorkshire, England

[6] CALTECH, Space Radiat Lab, Pasadena, CA 91125 USA

[7] Coll France, F-75231 Paris 05, France

[8] Cork Inst Technol, Dept Appl Phys & Instrumentat, Cork, Ireland

来源：

ASTRONOMY & ASTROPHYSICS | 2004年 / 423卷 / 02期

关键词：

gamma rays : observations;

D O I：

10.1051/0004-6361:20041021

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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 = 20h32m, Dec = +41degrees33'. This is 0.6degrees 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.

引用

页码：415 / 419

页数：5

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