The MEGA advanced Compton telescope project

被引：19

作者：

Bloser, PF ^{[1
]}

Andritschke, R ^{[1
]}

Kanbach, G ^{[1
]}

Schönfelder, V ^{[1
]}

Schopper, F ^{[1
]}

Zoglauer, A ^{[1
]}

机构：

[1] Max Planck Inst Extraterr Phys, D-85748 Garching, Germany

来源：

NEW ASTRONOMY REVIEWS | 2002年 / 46卷 / 8-10期

关键词：

gamma rays : observations; instrumentation : detectors; space vehicles : instruments; surveys;

D O I：

10.1016/S1387-6473(02)00209-9

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The goal of the Medium Energy Gamma-ray Astronomy (MEGA) telescope is to improve sensitivity at medium gamma-ray energies (0.4-50 MeV) by at least an order of magnitude over that of COMPTEL. This will be achieved with a new compact design that allows for a very wide field of view, permitting a sensitive all-sky survey and the monitoring of transient and variable sources. The key science objectives for MEGA include the investigation of cosmic high-energy particle accelerators, studies of nucleosynthesis sites using gamma-ray lines, and determination of the large-scale structure of galactic and cosmic diffuse background emission. MEGA records and images gamma-ray events by completely tracking both Compton and pair creation interactions in a tracker of double-sided silicon strip detectors and a calorimeter of CsI crystals able to resolve in three dimensions. We present initial laboratory calibration results from a small prototype MEGA telescope. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：611 / 616

页数：6

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