Physics – Optics
Scientific paper
Nov 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994spie.2279..532v&link_type=abstract
Proc. SPIE Vol. 2279, p. 532-543, Advances in Multilayer and Grazing Incidence X-Ray/EUV/FUV Optics, Richard B. Hoover; Arthur B
Physics
Optics
Scientific paper
The Spectrum-X-Gamma satellite is scheduled for launch in 1995-96. Mission objectives include broad and narrow band imaging spectroscopy over a wide range of energies from the EUV through hard X-rays with an emphasis on studying galactic and extragalactic X-ray sources. Timing and moderate resolution spectroscopy can be performed with the solid state spectrometer SIXA (Silicon X-Ray Array), placed on the focal plane of the SODART telescope with total effective area of 1150 cm2 at 6 keV (for f equals 8 m telescope). The detector consists of 19 circular Si(Li) pixels, each with an active diameter of 9.2 mm and thickness of 3 mm. A radiative cooler will be used to bring the detector to the proper operating temperature (110 - 120 K). The energy range 0.5 - 20 keV is divided into 1024 channels of 20 eV size. Photon can be recorded with 30 microsecond(s) time resolution and 160 - 200 eV (1 - 7 keV) energy resolution. Potential observing programs (for e.g. time-resolved Iron Kalpha line spectroscopy) include stellar coronae, cataclysmic variables and X-ray binaries; accretion discs and coronae of neutron stars and black hole candidates; supernova remnants, active galactic nuclei and clusters of galaxies.
Abrosimov Aleksander
Hakala Pasi
Huovelin Juhani
Kamarainen Veikko J.
Kuznetsov Aleksander E.
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