Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993ap%26ss.204..181b&link_type=abstract
Astrophysics and Space Science (ISSN 0004-640X), vol. 204, no. 2, p. 181-189.
Astronomy and Astrophysics
Astronomy
3
Gamma Ray Astronomy, Gamma Ray Telescopes, Photons, Radiation Detectors, Sensitivity, Monte Carlo Method, Sky Surveys (Astronomy), Spatial Resolution, Spectral Resolution
Scientific paper
Point sources in the region of hard gamma rays 30 MeV - 10 GeV were identified with single young pulsars (like Crab), transient gamma ray sources, and bright quasars. The main problem in this region is the small number of the photons, registrated from the source. In order to overcome this problem a new design of a gamma telescope is proposed, which registers quanta from all directions simultaneously. In this way it is possible to increase the sensitivity by more than an order of magnitude with the same size and smaller weight, in comparison with EGRET. Analyses have shown that such a telescope must stay without the calorimeter, which reduces its spectral resolution. The estimated number of point sources which could be discovered by such a telescope could approach one thousand. Results of Monte Carlo simulations are presented.
Bisnovatyj-Kogan G. S.
Lejkov N. G.
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