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20 September 2007 Hard x-ray telescope concentrator for astrophysical mission Spectrum-X-Gamma
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The hard X-ray telescope-concentrator ART-XC on board the Spectrum-X-Gamma X-ray astrophysical observatory (launching in 2011) is one of the main instruments of the mission. The instrument will be used for an all-sky survey and then for pointed observations which are planned for the first four and the next three years of the Mission, respectively. ART-XC will be sensitive in the 4-30 keV energy range and will have an effective area of several hundred square centimeters at 10 keV. It will have a field of view of about ~28 arcmin, angular resolution better than 1 arcmin and will be an order of magnitude more sensitive than the current generation of collimated instruments and coded mask telescopes in the survey mode and a two or three orders of magnitude more sensitive in the pointing mode. With its high sensitivity in the hard X-ray band and good imaging capabilities, ART-XC will extend the operating energy range of the observatory (complementing the capabilities of the primary science instrument eROSITA), thus significantly enhancing the mission both in the all-sky survey over the energy band 4-10 keV and, especially, in pointed observations over the energy band 4-30 keV. During the 4-year survey, this ART-XC would detect more than ~104 sources over 4-10 keV. For a 105 second pointed observation, the telescope will provide better than 10 microCrab sensitivity in the 4-20 keV energy range.
© (2007) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
M. Pavlinsky, V. Arefiev, E. Churazov, M. Gilfanov, S. Grigorovich, D. Litvin, I. Lapshov, V. Levin, V. Akimov, N. Semena, A. Tkachenko, A. Vikhlinin, R. Sunyaev, B. D. Ramsey, M. V. Gubarev, R. F. Elsner, S. L. O'Dell, and M. C. Weisskopf "Hard x-ray telescope concentrator for astrophysical mission Spectrum-X-Gamma", Proc. SPIE 6688, Optics for EUV, X-Ray, and Gamma-Ray Astronomy III, 66880L (20 September 2007);


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