Astronomy and Astrophysics – Astrophysics
Scientific paper
Jul 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006spie.6266e..60v&link_type=abstract
Space Telescopes and Instrumentation II: Ultraviolet to Gamma Ray. Edited by Turner, Martin J. L.; Hasinger, Günther. Proceedi
Astronomy and Astrophysics
Astrophysics
Scientific paper
Nuclear astrophysics presents an extraordinary scientific potential for the study of the most powerful sources and the most violent events in the Universe. In order to take full advantage of this potential, the next generation of instrumentation for this domain will have to achieve a factor of 10-100 improvement in sensitivity over present technologies. With the development of a Laue Lens we have taken up this challenge: gamma-rays are focused from the large collecting area of a crystal diffraction lens onto a very small detector volume. As a consequence, the background noise is extremely low, making possible unprecedented sensitivities. The detector, a solid state Compton Camera, provides high spectral and angular resolution, and the capability of measuring the polarization of the incident photons. Based on the measured performance of our prototype gamma-ray lens CLAIRE, a mission concept of a space borne Laue lens telescope is outlined. A Laue lens telescope addresses a wide range of fundamental astrophysical questions such as the life cycles of matter and the behavior of matter under extreme conditions. Amongst the primary scientific objectives of a Laue lens telescope is the study of type Ia supernovae by measuring intensities, shifts and shapes of their nuclear gamma-ray lines. Moreover, the sensitive gamma-ray line spectroscopy performed with a Laue lens telescope is expected to clarify the nature of galactic microquasars (e-e+ annihilation radiation from the jets), neutron stars and pulsars, X-ray Binaries, AGN, solar flares and gamma-ray afterglow from gamma-burst counterparts.
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