The Soft X-Ray Spectrometer (SXS) for the ISAS/JAXA New Exploration X-Ray Telescope

Details The Soft X-Ray Spectrometer (SXS) for the ISAS/JAXA New Exploration X-Ray Telescope The Soft X-Ray Spectrometer (SXS) for the ISAS/JAXA New Exploration X-Ray Telescope

Mar 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008head...10.3608k&link_type=abstract

American Astronomical Society, HEAD meeting #10, #36.08

Physics

Optics

Scientific paper

The ISAS/JAXA New Exploration X-Ray Telescope (NEXT) is now under development for launch in 2013. The observatory is designed to provide extremely high spectral resolution with large collecting area below 10 keV using an x-ray calorimeter, and a very large band pass (up to 300 keV) with extraordinary sensitivity over the range 10-80 keV using focusing x-ray optics. In this talk we will discuss plans for the Soft X-Ray Spectrometer (SXS), which uses an x-ray calorimeter array to provide the high spectral resolution. The SXS is a joint effort between ISAS and NASA and recently proposed to NASA as a Mission of Opportunity for the US participation. The SXS incorporates a 6x6 calorimeter array that has strong heritage in the Suzaku program and better than 7 eV energy resolution, with 4-5 eV expected based on recent laboratory tests. The cryogenic system will be a hybrid design with both liquid helium and mechanical coolers to provide a robust, redundant system with long life (> 3 years). The x-ray optical system (6 m focal length) uses thin-foil conical optics to provide at least 220 square cm at 6 keV. The SXS will enable a wide variety of interesting science topics to be pursued, including testing theories of structure formation using velocity measurements of clusters of galaxies and inferring the energy output from the jets and winds of active galaxies. The SXS will accurately measure metal abundances in the oldest galaxies, providing unique information on the origin of the elements, and observe matter in extreme gravitational fields, enabling time-resolved spectra from material approaching the event horizon of a black hole. Along with providing the instrument, we have proposed a well supported guest investigator program that will enable full US participation.

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