Astronomy and Astrophysics – Astrophysics
Scientific paper
2006-11-15
Proc.SPIE Int.Soc.Opt.Eng. 6266 (2006) 64
Astronomy and Astrophysics
Astrophysics
12 pages, 12 figures
Scientific paper
10.1117/12.672993
A breakthrough in the sensitivity level of the hard X-/gamma-ray telescopes, which today are based on detectors that view the sky through (or not) coded masks, is expected when focusing optics will be available also in this energy range. Focusing techniques are now in an advanced stage of development. To date the most efficient technique to focus hard X-rays with energies above 100 keV appears to be the Bragg diffraction from crystals in transmission configuration (Laue lenses). Crystals with mosaic structure appear to be the most suitable to build a Laue lens with a broad passband, even though other alternative structures are being investigated. The goal of our project is the development of a broad band focusing telescope based on gamma-ray lenses for the study of the continuum emission of celestial sources from 60 keV up to >600 keV. We will report details of our project, its development status and results of our assessment study of a lens configuration for the European Gamma Ray Imager (GRI) mission now under study for the ESA plan "Cosmic Vision 2015-2025".
Amati Lorenzo
Andersen Harpo K.
Carassiti Vito
Caroli Ezio
Courtois Pierre
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