29 July 2010 DIOS: the diffuse intergalactic oxygen surveyor: status and prospects
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Abstract
DIOS (Diffuse Intergalactic Oxygen Surveyor) is a small scientific satellite with a main aim for the search of warm-hot intergalactic medium using redshifted OVII and OVIII lines. The instrument will consist of a 4-stage X-ray telescope and an array of TES microcalorimeters with 256 pixels, cooled with mechanical coolers. Hardware development of DIOS and the expected results are described. Survey observations over about 5° x 5° area will reveal new filamentary structures. DIOS will be proposed to the 3rd mission in JAXA's small satellite series in 2011, aiming for launch around 2016 if it will be selected.
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T. Ohashi, Y. Ishisaki, Y. Ezoe, S. Sasaki, H. Kawahara, K. Mitsuda, N. Y. Yamasaki, Y. Takei, M. Ishida, Y. Tawara, I. Sakurai, A. Furuzawa, Y. Suto, K. Yoshikawa, N. Kawai, R. Fujimoto, T. G. Tsuru, K. Matsushita, T. Kitayama, "DIOS: the diffuse intergalactic oxygen surveyor: status and prospects", Proc. SPIE 7732, Space Telescopes and Instrumentation 2010: Ultraviolet to Gamma Ray, 77321S (29 July 2010); doi: 10.1117/12.856916; http://dx.doi.org/10.1117/12.856916
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KEYWORDS
X-rays

Satellites

X-ray telescopes

Space operations

Oxygen

Physics

Clouds

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