Curriculum Vitaes
Profile Information
- Affiliation
- associate professor, Institute of Space and Astronautical Science, Department of Solar System Science, Japan Aerospace Exploration AgencySchool of Physical Sciences Department of Space and Astronautical Science, The Graduate University for Advanced Studies
- Degree
- 理学博士(Feb, 1989, Nagoya University)
- Researcher number
- 20201949
- ORCID ID
https://orcid.org/0000-0002-4613-7956- J-GLOBAL ID
- 202001003492525290
- researchmap Member ID
- R000013755
(併任)
はやぶさ2プロジェクトチーム
国際宇宙探査センター火星衛星探査機プロジェクトチーム
(兼務)
関西学院大学大学院理工学研究科 客員教授
Research Areas
2Papers
108-
Progress in Earth and Planetary Science, 12(1), Aug 19, 2025Abstract MIRS (MMX InfraRed Spectrometer) is a push-broom imaging spectrometer onboard of the JAXA sample return MMX mission. It has been built by the French laboratory LESIA, today LIRA (Laboratory for Instrumentation and Research in Astrophysics) of Paris Observatory-PSL in collaboration with five other French laboratories, collaboration and financial support of CNES and close collaboration with JAXA and MELCO. MIRS, designed to accomplish the MMX scientific objectives, has been built to be adapted on MMX Exploration Module. MIRS will remotely observe the Martian system for three years. MIRS will observe Phobos, Deimos and Mars in the spectral range 0.9–3.6 µm to characterize surface composition of the satellites and investigate Martian atmospheric variations. An overview of the MIRS Flight Model is presented as well as the data processing and the expected results.
-
The Astrophysical Journal, 988(1) 12-12, Jul 10, 2025Abstract Diffuse Galactic light (DGL) is starlight scattered by interstellar dust. In visible wavelengths, earlier studies observed DGL toward regions of low optical depth in high Galactic latitude, and show marginal consistency with a theoretical model assuming single scattering by dust grains. However, a model for DGL in regions of high optical depth has not been established. In this study, we analyze wide-field imaging data toward a region of high optical depth near the Galactic center, which was obtained with the Optical Navigation Camera on board the Hayabusa2 spacecraft. The data are reduced by dark-current and stray-light subtraction, flat-field correction, and sensitivity calibration for the DGL measurement. In the image, we select dark low-intensity areas where background starlight is highly absorbed by interstellar dust, and extract the DGL component by masking pixels contaminated by stars. As a result, we find that the DGL intensity decreases toward high optical depth, and this trend is reversed from the previous measurements in optically thin regions. To explain the observed trend, we introduce DGL models inferred from a radiative transfer equation in a plane-parallel dusty slab. By assuming literature values for the albedo and scattering asymmetry factor of interstellar dust, the measured DGL intensity can be fitted by a model in which a dust slab without internal emitters is illuminated by backside stars.
-
Earth and Planetary Science Letters, 648, Dec 15, 2024 Peer-reviewed
-
Space Telescopes and Instrumentation 2024: Optical, Infrared, and Millimeter Wave, 213-213, Aug 23, 2024
-
Space Telescopes and Instrumentation 2024: Optical, Infrared, and Millimeter Wave, 99-99, Aug 23, 2024
Misc.
58-
METEORITICS & PLANETARY SCIENCE, 43(7) A64-A64, Jul, 2008
-
ADVANCES IN SPACE RESEARCH, 42(2) 331-336, Jul, 2008
-
Abstracts for fall meeting of the Japanese Society for Planetary Science, 2007 61-61, 2007We have examined the integrated science of the Moon using KAGUYA (SELENE). The strategy is summarized as: 1) drawing two-dimensional maps to integrate various geologic units into a coherent map, 2) drawing three-dimensional maps of subsurface structures beneath maria and highlands, 3) joint studies of special topics such as mare tectonics and crustal formation, 4) joint studies of advanced topics such as dichotomy and bulk composition. Using the strategy, we will shed light on the tectonics of maria; crustal formation; explorations of polar regions; inner structure of multi-ring crater - Orientale; and lunar environments to figure out the origin and evolution of the Moon.
-
Abstracts for fall meeting of the Japanese Society for Planetary Science, 2007 62-62, 2007KAGUYA (SELENE) is a Japanese lunar mission which will be launched using H-IIA vehicle in September 2007 by JAXA. We are planning to improve lunar gravity field model by four-way Doppler measurements and differential VLBI observations using three orbiters of KAGUYA (SELENE) mission. KAGUYA is composed of the main orbiter and two small free-flyer subsatellites, i.e., the Relay Satellite (Rstar) and the VLBI Radio Satellite (Vstar). Each subsatellite weighs approximately 50kg.
-
Abstracts for fall meeting of the Japanese Society for Planetary Science, 2006 7-7, 2006The observation of Asteroid Itokawa by Hayabusa spacecraft has brought us a lot of new knowledge for very small (about 500m in length) S-type asteroid. We already have started to consider next space mission to small bodies in the solar system. For the next asteroid mission, we would like to explore C-type asteroid, which is also major type in the asteroid belt. This type of asteroid is supposed to have organic matter or water more than S-type asteroid, and it is important to study the material related to life. In this paper, we present the current plan for the next exploration to asteroids. We also want to encourage many researchers to join our asteroid mission.
-
J. Geod. Soc. Japan., 47(1) 558-563, 2001
-
Abstracts Fall Meeting of the Japanese Society for Planetary Sciences, 1995 P26, Nov 13, 1995
Professional Memberships
6Research Projects
6-
科学研究費助成事業, 日本学術振興会, Apr, 2023 - Mar, 2027
-
科学研究費助成事業, 日本学術振興会, Apr, 2023 - Mar, 2027
-
科学研究費助成事業, 日本学術振興会, Apr, 2021 - Mar, 2024
-
Grants-in-Aid for Scientific Research, Japan Society for the Promotion of Science, Apr, 2012 - Mar, 2015
-
Grants-in-Aid for Scientific Research, Japan Society for the Promotion of Science, 2008 - 2011