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Proceedings Paper

The soft x-ray photon-counting telescope for solar observations
Author(s): Taro Sakao; Noriyuki Narukage; Yoshinori Suematsu; Kyoko Watanabe; Masumi Shimojo; Shinsuke Imada; Shin-nosuke Ishikawa; Edward E. DeLuca
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Paper Abstract

We present overview and development activities of a soft X-ray photon-counting spectroscopic imager for the solar corona that we conceive as a possible scientific payload for future space solar missions including Japanese Solar-C. The soft X-ray imager will employ a Wolter I grazing-incidence sector mirror with which images of the corona (1 MK to beyond 10 MK) will be taken with the highest-ever angular resolution (0.5"/pixel for a focal length of 4 m) as a solar Xray telescope. In addition to high-resolution imagery, we attempt to implement photon-counting capability for the imager by employing a backside-illuminated CMOS image sensor as the focal-plane device. Imaging-spectroscopy of the X-ray corona will be performed for the first time in the energy range from ~0.5 keV up to 10 keV. The imaging-spectroscopic observations with the soft X-ray imager will provide a noble probe for investigating mechanism(s) of magnetic reconnection and generation of supra-thermal (non-thermal) electrons associated with flares. Ongoing development activities in Japan towards the photon-counting imager is described with emphasis on that for sub-arcsecond-resolution grazing-incidence mirrors.

Paper Details

Date Published: 24 July 2014
PDF: 8 pages
Proc. SPIE 9144, Space Telescopes and Instrumentation 2014: Ultraviolet to Gamma Ray, 91443D (24 July 2014); doi: 10.1117/12.2055925
Show Author Affiliations
Taro Sakao, Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (Japan)
Noriyuki Narukage, National Astronomical Observatory of Japan (Japan)
Yoshinori Suematsu, National Astronomical Observatory of Japan (Japan)
Kyoko Watanabe, Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (Japan)
Masumi Shimojo, National Astronomical Observatory of Japan (Japan)
Shinsuke Imada, Nagoya Univ. (Japan)
Shin-nosuke Ishikawa, National Astronomical Observatory of Japan (Japan)
Edward E. DeLuca, Harvard-Smithsonian Ctr. for Astrophysics (United States)


Published in SPIE Proceedings Vol. 9144:
Space Telescopes and Instrumentation 2014: Ultraviolet to Gamma Ray
Tadayuki Takahashi; Jan-Willem A. den Herder; Mark Bautz, Editor(s)

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