2022 Fiscal Year Final Research Report
Revealing the cosmic star formation history by multi-color survey at millimeter and submillimeter bands
| Project/Area Number |
19K14754
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| Research Category |
Grant-in-Aid for Early-Career Scientists
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| Allocation Type | Multi-year Fund |
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| Review Section |
Basic Section 16010:Astronomy-related
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| Research Institution | Kitami Institute of Technology (2020-2022)
The University of Tokyo (2019) |
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Principal Investigator |
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| Project Period (FY) |
2019-04-01 – 2023-03-31
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| Keywords | サブミリ波 / 銀河形成 / 電波天文学 |
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| Outline of Final Research Achievements |
Astronomical imaging at millimeter and submillimeter wavelengths is an important observational technique for understanding the history of cosmic star formation. I developed the technologies to realize a multicolor camera that allows the determination of the photometric redshift of star-forming galaxies in early universe. First, optical bandpass filters, which are important for band definition, were developed using commercially available flexible printed circuit technology. Second, a horn antenna array optically coupled to the cryogenic detector was fabricated using silicon-aluminum material with low thermal contraction suitable for a large focal plane. The experimental environment for the cryogenic detector was also developed and evaluation tests of the cryogenic detector were started. The results of this research will be used to promote the development of next-generation multicolor submillimeter cameras for scientific observation.
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| Free Research Field |
電波天文学
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| Academic Significance and Societal Importance of the Research Achievements |
本研究によって、次世代サブミリ波多色カメラの実現に欠かせない光学フィルターや大型焦点面用の材料開発、そして大型極低温検出器の測定環境の開発が完了した。6色撮像を目指すグリーンランド望遠鏡用サブミリ波カメラ計画においてこれらの技術を活用し、早期に遠方星形成銀河の多色撮像観測の実現が期待される。また、これらの技術のより広範な応用も期待される。特にフレキシブルプリント基板を用いた光学フィルターは、多色観測を志向する他の電波観測装置への利用や次世代通信での利用、また大口径ウェハーとの相性が良いシリコンアルミ複合体は極低温検出器に加えて量子コンピューター分野での用途も期待される。
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