Gamma-ray telescope in the Canary Islands. Free Technical Library News

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Gamma-ray telescope in the Canary Islands

08.06.2004

A new gamma-ray telescope, designed by scientists from Germany, Belgium, Italy, Switzerland and Spain, went into operation on the island of Palma (Canary Islands).

The telescope registers gamma-ray fluxes from space not directly, but by Cherenkov radiation, which gamma particles generate in the upper atmosphere. A 234-square-meter swivel mirror made of carbon fiber and aluminum captures the flashes that occur at altitudes of 10-20 kilometers, when gamma rays strike air atoms and create charged particles rushing towards the Earth.

The rays of light reflected by the mirror are concentrated on a camera of 577 highly sensitive sensors. The computer, analyzing the data from the camera, calculates the trajectory of the initial beam of gamma rays. This will allow physicists to understand the nature of radiation sources. The telescope can look into the depths of the universe for eight billion light years.

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