Requirements, Goals and Challenges for an X-Ray Microcalorimeter Spectrometer on the Constellation-X Observatory

Details Requirements, Goals and Challenges for an X-Ray Microcalorimeter Spectrometer on the Constellation-X Observatory Requirements, Goals and Challenges for an X-Ray Microcalorimeter Spectrometer on the Constellation-X Observatory

Dec 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aas...207.1204k&link_type=abstract

American Astronomical Society Meeting 207, #12.04; Bulletin of the American Astronomical Society, Vol. 37, p.1170

Astronomy and Astrophysics

Astrophysics

Scientific paper

X-ray microcalorimeter arrays are well suited to address key problems in high-energy astrophysics. Their high spectral resolution, high quantum efficiency and imaging capability provide a powerful new tool for astrophysicists. These features have made the microcalorimeter a key component of the Constellation-X mission. Building on the potential and demonstrated performance in orbit of the JAXA/NASA high resolution X-Ray Spectrometer on Suzaku (formerly Astro-E2), plans are underway to implement much larger arrays of microcalorimeters with higher spectral resolution and optimal pixel design to match the x-ray mirror performance. A 2.5° array with 5° pixels that have a resolving power > 2600 at the Fe-K shell energy (6 keV) is the starting point for possible designs, and would enable new capabilities for measuring the properties of all classes of celestial sources, including those with extended x-ray emission. The low temperatures required for microcalorimeter performance will be achieved by using multiple, cryogen-free cooling stages designed to operate for many years in space. We will present the basic design requirements, goals and technical roadmap for the Constellation-X X-Ray Microcalorimeter Spectrometer (XMS).

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