Improved energy resolution for VHE gamma ray astronomy with systems of Cherenkov telescopes

被引：24

作者：

Hofmann, W ^{[1
]}

Lampeitl, H ^{[1
]}

Konopelko, A ^{[1
]}

Krawczynski, H ^{[1
]}

机构：

[1] Max Planck Inst Kernphys, D-69029 Heidelberg, Germany

来源：

ASTROPARTICLE PHYSICS | 2000年 / 12卷 / 04期

关键词：

D O I：

10.1016/S0927-6505(99)00109-7

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present analysis techniques to improve the energy resolution of stereoscopic systems of imaging atmospheric Cherenkov telescopes, using the HEGRA telescope system as an example. The techniques include (i) the determination of the height of the shower maximum, which is then taken into account in the energy determination, and (ii) the determination of the location of the shower core with the additional constraint that the direction of the gamma rays is known a priori. This constraint can be applied for gamma ray point sources, and results in a significant improvement in the localization of the shower core, which translates into better energy resolution. Combining both techniques, the HEGRA telescopes reach an energy resolution between 9% and 12%, over the entire energy range from 1 TeV to almost 100 TeV. Options for further improvements of the energy resolution are discussed. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：207 / 216

页数：10

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