Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981stin...8131069d&link_type=abstract
Search on extraterrestrial gamma-ray lines from Southen Hemisphere sources with high energy resolution gamma-ray telescopes
Astronomy and Astrophysics
Astronomy
Balloon-Borne Instruments, Gamma Ray Astronomy, Gamma Ray Spectrometers, Positron Annihilation, Electronic Equipment, Galactic Radiation, High Altitude Balloons, International Cooperation, Telescopes
Scientific paper
The scope of the GEL 1 and 2 balloon-borne gamma ray telescope experiments is described. The gamma ray spectrometer to be used on GEL 1 is described. It is designed to study the nature of the Galactic center positron annihilation 511 KeV line. The telescope effect is achieved through the aperture angle formed by the gamma ray spectrometer anticoincidence crystals. The balloon gondola and onboard instrumentation of the balloon are described.
Albernhe Francis
Boclet Daniel
Dacosta J. M.
Durouchoux Ph.
Dutra Severino L. G.
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