Astronomy and Astrophysics – Astrophysics
Scientific paper
2001-10-05
New Astron.Rev. 46 (2002) 611-616
Astronomy and Astrophysics
Astrophysics
7 pages LaTeX, 5 figures, to appear in New Astronomy Reviews (Proceedings of the Ringberg Workshop "Astronomy with Radioactivi
Scientific paper
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.
Andritschke Robert
Bloser Peter F.
for the MEGA Collaboration
Kanbach Gottfried
Schoenfelder Volker
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