The MAGIC Telescope
The Magic Telescope - Introduction
Imaging Air Cherenkov Telescopes
IACTs are ground-based telescopes for the detection of very high energy (VHE) electromagnetic particles, in particular gamma rays. Having no electric charge, VHE gammas are not affected by magnetic fields, and can act as messengers of distant cosmic events.
Although high-energy gamma quanta get absorbed in the atmosphere - they can be observed indirectly. The absorption process proceeds by creation of a cascade or shower of high-energy secondary particles.
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MAGICs observation of gamma ray bursts from Backreaction
Hints of a breakdown of relativity theory? from Sciam blog posting