Curriculum Vitaes
Profile Information
- Affiliation
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency
- Degree
- Doctor of Science(Mar, 1989, The University of Tokyo)
- Contact information
- yoshikawa.makoto
jaxa.jp - J-GLOBAL ID
- 200901037361657011
- researchmap Member ID
- 1000304540
Research Interests
6Research Areas
2Research History
5-
Apr, 1998 - Sep, 2003
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Apr, 1991 - Mar, 1998
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Dec, 1996 - Dec, 1997
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Apr, 1989 - Mar, 1991
Education
2-
Apr, 1984 - Mar, 1989
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Apr, 1980 - Mar, 1984
Committee Memberships
9-
Oct, 2020 - Present
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Apr, 1994 - Present
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Jan, 2013 - Mar, 2015
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Jan, 2011 - Dec, 2012
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2009 - 2011
Awards
2-
Nov, 2019
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Dec, 2018
Papers
311-
Icarus, 452 117023-117023, Jul, 2026
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ICARUS, 448, Apr, 2026
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METEORITICS & PLANETARY SCIENCE, Feb 23, 2026
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JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS, 131(2), Feb 10, 2026
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PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 78(1) 335-348, Feb, 2026
Misc.
524-
日本惑星科学会誌 遊・星・人, 33(1) 34-50, 2024
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日本惑星科学会秋季講演会予稿集(Web), 2024, 2024
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日本地球惑星科学連合大会予稿集(Web), 2023, 2023
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日本地球惑星科学連合大会予稿集(Web), 2023, 2023
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日本地球惑星科学連合大会予稿集(Web), 2023, 2023
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銅と銅合金 : 銅及び銅合金技術研究会誌 = Copper and copper alloy : journal of Japan Research Institute for Advanced Copper-Base Materials and Technologies / 銅及び銅合金技術研究会 [編], 62(1) 1-5, 2023
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日本地球惑星科学連合大会予稿集(Web), 2023, 2023
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宇宙科学技術連合講演会講演集(CD-ROM), 67th, 2023
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宇宙科学技術連合講演会講演集(CD-ROM), 67th, 2023
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宇宙科学技術連合講演会講演集(CD-ROM), 66th, 2022
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宇宙科学技術連合講演会講演集(CD-ROM), 66th, 2022
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宇宙科学技術連合講演会講演集(CD-ROM), 66th, 2022
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宇宙航空研究開発機構研究開発報告 JAXA-RR-(Web), (21-008), 2022
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Bulletin of The Iron and Steel Institute of Japan, 26(7) 6-15, Jul, 2021 Peer-reviewedInvitedLead author
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Jan 22, 2021The asteroid exploration project "Hayabusa2" has successfully returned samples from the asteroid (162173) Ryugu. In this study, we measured the linear polarization degrees of Ryugu using four ground-based telescopes from 2020 September 27 to December 25, covering a wide-phase angle (Sun-target-observer's angle) range from 28$^\circ$ to 104$^\circ$. We found that the polarization degree of Ryugu reached 53$\%$ around a phase angle of 100$^\circ$, the highest value among all asteroids and comets thus far reported. The high polarization degree of Ryugu can be attributed to the scattering properties of its surface layers, in particular the relatively small contribution of multiply-scattered light. Our polarimetric results indicate that Ryugu's surface is covered with large grains. On the basis of a comparison with polarimetric measurements of pulverized meteorites, we can infer the presence of submillimeter-sized grains on the surface layer of Ryugu. We also conjecture that this size boundary represents the grains that compose the aggregate. It is likely that a very brittle structure has been lost in the recovered samples, although they may hold a record of its evolution. Our data will be invaluable for future experiments aimed at reproducing the surface structure of Ryugu.
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宇宙航空研究開発機構特別資料 JAXA-SP-(Web), (21-001), 2021
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日本地球惑星科学連合大会予稿集(Web), 2021, 2021
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日本地球惑星科学連合大会予稿集(Web), 2021, 2021
Books and Other Publications
19Presentations
52Teaching Experience
8-
Apr, 2019 - Present太陽と太陽系の科学 (放送大学)
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Apr, 2011 - Present位置天文学・天体力学 (東京大学)
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Apr, 2007 - Present宇宙科学 (玉川大学)
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Apr, 2006 - PresentSpace System Engineering 3 (The Graduate University for Advanced Studies)
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2006 - Present宇宙工学概論 (総合研究大学院大学)
Professional Memberships
3Research Projects
16-
科学研究費助成事業, 日本学術振興会, Apr, 2024 - Mar, 2027
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Grants-in-Aid for Scientific Research, Japan Society for the Promotion of Science, Apr, 2023 - Mar, 2026
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Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B), Japan Society for the Promotion of Science, Apr, 2018 - Mar, 2021
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Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C), Japan Society for the Promotion of Science, Apr, 2016 - Mar, 2019
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Grants-in-Aid for Scientific Research, Japan Society for the Promotion of Science, 2003 - 2006