Curriculum Vitaes
Profile Information
- Affiliation
- Associate Professor, Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency
- J-GLOBAL ID
- 201901015283902873
- researchmap Member ID
- B000362527
Research History
1-
May, 2023 - Present
Papers
66-
Icarus, 417 116122-116122, Jul, 2024
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Science (New York, N.Y.), 379(6634) eabo0431, Feb 24, 2023
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Science (New York, N.Y.), 379(6634) eabn9033, Feb 24, 2023
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Science Advances, 8(46), Nov, 2022
Misc.
77-
JAXA research and development report, 11 141-149, Mar, 2012A data distribution system for still and video images acquired by High Definition Television System (HDTV) on board JAXA's Lunar Explorer Kaguya (SELENE) is now being developed aiming at providing 1.06 million HDTV frame images for both objectives of outreach and scientific analysis. The design and data model of the system based on PDAP are described in the paper.
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JAXA research and development report, 11 121-131, Mar, 2012The NASA Apollo missions from 1969 to 1977 provided the first-ever seismic data from a planetary body other than the Earth. Forty years after the acquisition of these lunar seismic data, lunar scientists continue to analyze them and derive new results related to lunar geophysics. However, the users often find the data difficult to obtain and analyze because at present not all data are publicly available and archived with a convenient interface, and also because the format of the archived data is unfamiliar to many seismologists. To alleviate this difficulty, we have developed a retrieval system for the Apollo seismic data that enables the user to obtain the data and metadata necessary to use them properly. To accomplish this, we first collected most of the Apollo lunar seismic data and information required to analyze them. Then, we built a relational database consisting of the decoded lunar seismic data and an application to access the database on the World Wide Web. Using the database and application, one can search and obtain the required lunar seismic data online. This new data retrieval system will allow more people to access the existing lunar seismic data; and we anticipate that future analysis of the archived data will generate significant progress towards better understanding of the Moon and the solar system.
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SCIENCE, 333(6046) 1119-1121, Aug, 2011
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日本惑星科学会秋期講演会予稿集, 2010 44-44, Oct 6, 2010
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Planetary people, 19(2) 157-160, Jun 25, 2010
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Planetary People, 18(4) 244-245, Dec 25, 2009
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Abstracts for fall meeting of the Japanese Society for Planetary Science, 2007 107-107, 2007The Hayabusa spacecraft, which was launched in May 2003, arrived at Asteroid Ito-kawa in September 2005, and it made observations of Itokawa and tried touch down in about three months.Hayabusa has four scientific instruments, that is Multi-Spectral Telescopic Imager (AMICA), Laser Altimeter (LIDAR), Near-Infrared Spectrometer (NIRS), and X-ray Fluorescence Spectrometer (XRS). The data obtained by these instruments were firstly analyzed by Hayabusa Science Team and some of the results have been pub-lished as scientific papers. At the same time, the science team was preparing to open them to the public and this work has almost been done. Therefore the science team release the data archives to public from April 24, 2007. All the scientific data that Hayabusa obtained are open to the public.The Hayabusa data archives can be accessed from the following web site:(URL) http://hayabusa.sci.isas.jaxa.jp/
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日本惑星科学会秋季講演会予稿集, 2007 133-133, 2007Analytical procedure and method is under development for the X-Ray Spectrometer onboard SELENE(Kaguya). We present the system in detail. Furterhmore, we investigate the datainterpretation for XRF, including the surface microscopic and macroscopic roughness as well as mineral mixing effects. For a daily automatic analysis for huge amount of data, correction equations for ther effects are necessary to be defined. We also present the currect status of the correction method.
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日本惑星科学会秋季講演会予稿集, 2006 96-76, 2006XRS (x-ray spectrometer) onboard Hayabusa has observed x-ray fluorescence from near-Earth asteroid 25143 Itokawa to determine major elemental composition. Okada et al. (2006) reported average elemental mass ratios of Mg/Si = 0.78 + - 0.09 and Al/Si = 0.07 + - 0.03. In this study, we attempted to estimate upper limits of Ca and Fe. To discussion about abundance of Ca and Fe, we need to integrate data longer time, fallowing the result of numerical simulation. In this poster, we report a result and the method of the analyses.
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Proc ISAS Lunar Planet Symp (CD-ROM), 39th ROMBUNNO.21, 2006
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宇宙科学シンポジウム 平成14年度 第3回, 87-88, 2003
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Abstracts Fall Meeting of the Japanese Society for Planetary Sciences, 2001 28-28, Oct 6, 2001We are developing an X-Ray fluorescence Spectrometer (XRS) onboard the asteroid probe MUSES-C. Variation of solar X-rays must be considered to analyze major elements quantitatively. XRS observes solar X-rays indirectly using a standard sample. Therefore X-rays from a planetary surface can be calibrated with those from a standard sample in addition to investigation of the spectra and intensities of solar X-rays. We make a model of solar X-ray flux and simulate X-rays observed from a standard sample under various solar conditions. We estimate inversely solar X-rays with calculated emissions and investigate suitable integration times.
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Abstracts Fall Meeting of the Japanese Society for Planetary Sciences, 2001 84-84, Oct 6, 2001We are developing an X-Ray fluorescence Spectrometer (XRS) onboard the asteroid probe MUSES-C. XRS contains 5 CCD chips. XRS will not carry in-flight calibration sources. Therefore we will observe cosmic X-ray objects for the calibration with XRS during the cruise. We performed numerical simulation of observing some known X-ray objects. Those simulations were run with exposure time about 3 hours, based on the best-fit models to the ASCA SIS spectra.
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Abstracts Fall Meeting of the Japanese Society for Planetary Sciences, 1999 61-61, Nov 13, 1999
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Abstracts Fall Meeting of the Japanese Society for Planetary Sciences, 1999 62-62, Nov 13, 1999
Research Projects
3-
Grants-in-Aid for Scientific Research, Japan Society for the Promotion of Science, Apr, 2013 - Mar, 2015
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Grants-in-Aid for Scientific Research, Japan Society for the Promotion of Science, 2011 - 2012
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科学研究費助成事業, 日本学術振興会, 1999 - 2001
