Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992spie.1743..155l&link_type=abstract
In: EUV, X-ray, and gamma-ray instrumentation for astronomy III; Proceedings of the Meeting, San Diego, CA, July 22-24, 1992 (A9
Astronomy and Astrophysics
Astronomy
Gamma Ray Telescopes, Spaceborne Astronomy, X Ray Telescopes, Cadmium Tellurides, Intergalactic Media, Pixels, Spatial Resolution, X Ray Binaries
Scientific paper
The hard X-ray/soft gamma-ray telescope SIGMA has been successfully operating for more than two years aboard the Soviet spacecraft GRANAT. This paper is intended to give a report of the most important technical as well as astrophysical inferences which have been obtained from this mission. From these, the mandatory capabilities of a future mission with their relative priorities can be drawn. The most important ones are (1) simultaneous spectral and imaging capabilities, (2) a wide field of view, and (3) a better sensitivity at 0.5 MeV. A sketch of a possible future satellite experiment fulfilling these requirements is given. It is a spectral imager in the sense that priority is given to the angular resolution in comparison with the spectral resolution. Its field of view (360 x 10 deg) enables continuous monitoring of the galactic plane emission.
Lebrun François
Paul Jacques
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