HEGRA discovery of the first unidentified TeV source

被引：5

作者：

Horns, D ^{[1
]}

Rowell, G ^{[1
]}

机构：

[1] Max Planck Inst Kernphys, Heidelberg, Germany

来源：

NEW ASTRONOMY REVIEWS | 2004年 / 48卷 / 5-6期

关键词：

unidentified TeV source; HEGRA; imaging air Cherenkov; stereoscopic observations; cosmic rays; multiwavelength observations; gamma-ray; X-ray; radio;

D O I：

10.1016/j.newar.2003.12.028

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The first unidentified TeV source in the Cygnus region is confirmed by follow-up observations carried out in 2002 with the HEGRA stereoscopic system of air Cherenkov telescopes. Using the combined similar to279 h of data, this new Source TeV J2032+4130, appears to be steady in flux over the four years of data taking, it shows an extension with radius 6.2', and has a hard spectrum with photon index -1.9 between 1 and 10 TeV. Its location places it at the edge of the core of the extremely dense stellar OB association, Cygnus OB2. Its integral flux above energies E > 1 TeV amounts to similar to3% of the Crab nebula flux. No counterpart at radio, optical, nor X-ray energies is as-yet seen, leaving TeV J2032+4130 presently unidentified. Summarized here are observational parameters of this source and brief astrophysical interpretation. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：489 / 492

页数：4

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