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Dios: The Dark Baryon Exploring MissionDIOS (Diffuse Intergalactic Oxygen Surveyor) is a small satellite aiming for a launch around 2022 with JAXA's Epsilon rocket. Its main aim is a search for warm-hot intergalactic medium with high-resolution X-ray spectroscopy of redshifted emission lines from OVII and OVIII ions. The superior energy resolution of TES microcalorimeters combined with a wide field of view (30 diameter) will enable us to look into gas dynamics of cosmic plasmas in a wide range of spatial scales from Earths magnetosphere to unvirialized regions of clusters of galaxies. Mechanical and thermal design of the spacecraft and development of the TES calorimeter system are described. Employing an enlarged X-ray telescope with a focal length of 1.2 m and fast repointing capability, DIOS can observe absorption features from X-ray afterglows of distant gamma-ray bursts.
Document ID
20170005811
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
External Source(s)
doi:10.1117/12.2232274
Authors
T.Ohashi (Tokyo Metropolitan Univ. Hachiouji, Japan)
Ishisaki, Y. (Tokyo Metropolitan Univ. Hachiouji, Japan)
Yamada, S. (Tokyo Metropolitan Univ. Hachiouji, Japan)
Kuromaru, G. (Tokyo Metropolitan Univ. Hachiouji, Japan)
Suzuki, S. (Tokyo Metropolitan Univ. Hachiouji, Japan)
Tawara, Y. (Tokyo Metropolitan Univ. Hachiouji, Japan)
Mitsuishi, I. (Nagoya Univ. Nagoya, Japan)
Babazaki, Y. (Nagoya Univ. Nagoya, Japan)
Mitsuda, K. (Japan Aerospace Exploration Agency Kanagawa, Japan)
Yamasaki, N. Y. (Japan Aerospace Exploration Agency Kanagawa, Japan)
Takei, Y. (Japan Aerospace Exploration Agency Kanagawa, Japan)
Yamamoto, R. (Japan Aerospace Exploration Agency Kanagawa, Japan)
Hayashi, T. (Japan Aerospace Exploration Agency Kanagawa, Japan)
Ota, N. (Nara Women's Univ. Japan)
Kelley, R. L. (NASA Goddard Space Flight Center Greenbelt, MD United States)
Sakai, K. (NASA Goddard Space Flight Center Greenbelt, MD United States)
Date Acquired
June 28, 2017
Publication Date
July 18, 2016
Publication Information
Publication: SPIE Proceedings
Publisher: SPIE
Volume: 9905
ISSN: 0277-786X
Subject Category
Astrophysics
Report/Patent Number
GSFC-E-DAA-TN43698
Meeting Information
Meeting: Space Telescopes and Instrumentation 2016
Location: Edinburgh
Country: United Kingdom
Start Date: June 26, 2016
Distribution Limits
Public
Copyright
Other
Keywords
X-ray telescope
mechanical coolers
intergalactic medium
microcalorimeters
X-ray spectra
oxygen lines

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