Invention of Multi Image X-ray Intereferometer Module for sub-arcsecond imaging of X-ray sources
Project/Area Number |
16K13787
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Research Category |
Grant-in-Aid for Challenging Exploratory Research
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Allocation Type | Multi-year Fund |
Research Field |
Astronomy
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Research Institution | Osaka University |
Principal Investigator |
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Project Period (FY) |
2016-04-01 – 2019-03-31
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Project Status |
Completed (Fiscal Year 2018)
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Budget Amount *help |
¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2017: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2016: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
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Keywords | X線干渉計 / X線天文学 / ブラックホール / X線検出器 / X線ピクセル検出器 / CMOSピクセル検出器 / タルボ効果 / X線天文学 / X線ピクセル検出器 / CMOS検出器 / 多重像X線干渉計 / MIXIM / 超小型衛星 / 角度分解能 / 衛星搭載 |
Outline of Final Research Achievements |
We have invented a new type of X-ray interferometers consisting of a grating and an X-ray pixel detector. By stacking multiple X-ray images obtained with this configuration, we can measure the profile of the light source in principle. However, diffraction blurs the image. We thus select X-ray events of which energy satisfy the interferometric condition called Talbot effect. to obtain a sharp image. We name this Multiple Image X-ray Interferometer Module (MIXIM). We can obtain angular resolution better than the Chandra satellite (0.5 arcsecond) with very small satellite of 50 cm size. MIXIM requires positional resolution of a few micrometer for the detector. We thus introduce CMOS pixel detector designed for visible light and succeeded in detecting X-rays at room temperature. We conducted X-ray irradiation experiment at a synchrotron facility using this detector and demonstrated that MIXIM principle surely works. Our current record is 0.3 arcsecond in resolution.
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Academic Significance and Societal Importance of the Research Achievements |
天文学の観測において、優れた角度分解能が重要であることはガリレオ以来の様々な発見が証明しており、最近のブラックホールのイメージのように社会的インパクトも大きい。 X線天文学では、斜入射X線ミラーを使ったシステムが必須であるという固定観念が蔓延しているが、本研究は全く異なる原理を提案し、かつ、技術的コスト的に困難とされているChandra衛星の角度分解能を超える見込みを与えた。我々の提案の方法は、格子の周期、格子・検出器間距離に関してスケーラブルで、0.1秒角、0.01秒角、さらにはマイクロ秒角のシステムも可能である。将来の様々な衛星形態に適応可能である。
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Report
(4 results)
Research Products
(68 results)
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[Journal Article] Soft X-ray Imager aboard Hitomi (ASTRO-H)2018
Author(s)
Tanaka Takaaki、Uchida Hiroyuki、Nakajima Hiroshi、Tsunemi Hiroshi、Hayashida Kiyoshi、Tsuru Takeshi Go, Tadayasu Dotani et al.
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Journal Title
Journal of Astronomical Telescopes, Instruments, and Systems
Volume: 4
Pages: id. 011211
DOI
Related Report
Peer Reviewed / Int'l Joint Research
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[Journal Article] Atmospheric gas dynamics in the Perseus cluster observed with Hitomi*2018
Author(s)
Hitomi Collaboration; Yuto Ichinohe, Shutaro Ueda, Ryuichi Fujimoto, Shota Inoue, Caroline A..Kilbourne,Tetsu Kitayama, Maxim Markevitch, BrianR.McNamara, Naomi Ota, FrederickS. Porter, Takayuki Tamura, Keigo Tanaka, Norbert Werner, K. Hayashida et al.
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Journal Title
Publications of the Astronomical Society of Japan
Volume: 70
Pages: id.9
DOI
Related Report
Peer Reviewed / Int'l Joint Research
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[Journal Article] Hard x-ray imaging polarimeter for PolariS2016
Author(s)
Hayashida, Kiyoshi; Kim, Juyong; Sadamoto, Masaaki; Yoshinaga, Keigo; Gunji, Shuichi; Mihara,Tatehiro; Kishimoto, Yuji; Kubo, Hidetoshi; Mizuno, Ttsuneyoshi; Takahashi, Hiromitsu; and 6 coauthors
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Journal Title
SPIE proceeding
Volume: 9905
Pages: 99051A
DOI
Related Report
Acknowledgement Compliant
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[Presentation] X線天文衛星代替機(XARM) 搭載の軟X線撮像装置の検討状況2017
Author(s)
林田清, 冨田洋, 森浩二, 中嶋大, 松本浩典, 常深博, 田中孝明, 内田裕之, 鶴剛, 夏苅権, 山内誠, 廿日出勇, 村上弘志 , 信川正順, 幸村孝由, 萩野浩一, 平賀純子, 信川久美子
Organizer
日本天文学会秋季年会
Related Report
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