Curriculum Vitaes
Profile Information
- Affiliation
- Associate Professor, Graduate School of Science and Engineering, Graduate School of Science and Engineering, Saitama UniversitySpecially Appointed Professor, Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency
- Degree
- Ph.D(Mar, 2002, The University of Tokyo)
- J-GLOBAL ID
- 200901062224980497
- researchmap Member ID
- 1000368169
- External link
Research Interests
14Research Areas
2Research History
8-
Apr, 2025 - Present
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Oct, 2007 - Mar, 2025
Education
3-
Apr, 1999 - 2002
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Apr, 1997 - Mar, 1999
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Apr, 1993 - Mar, 1997
Committee Memberships
2-
Jun, 2017 - Jun, 2019
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Apr, 2013 - Apr, 2019
Papers
372-
Publications of the Astronomical Society of Japan, Apr 11, 2025 Peer-reviewedAbstract The X-Ray Imaging and Spectroscopy Mission (XRISM) is a joint mission between the Japan Aerospace Exploration Agency (JAXA) and the National Aeronautics and Space Administration (NASA) in collaboration with the European Space Agency (ESA). In addition to the three space agencies, universities and research institutes from Japan, North America, and Europe have joined to contribute to developing satellite and onboard instruments, data-processing software, and the scientific observation program. XRISM is the successor to the ASTRO-H (Hitomi) mission, which ended prematurely in 2016. Its primary science goal is to examine astrophysical problems with precise, high-resolution X-ray spectroscopy. XRISM promises to discover new horizons in X-ray astronomy. It carries a 6 × 6 pixelized X-ray microcalorimeter on the focal plane of an X-ray mirror assembly (Resolve) and a co-aligned X-ray CCD camera (Xtend) that covers the same energy band over a large field of view. XRISM utilizes the Hitomi heritage, but all designs were reviewed. The attitude and orbit control system was improved in hardware and software. The spacecraft was launched from the JAXA Tanegashima Space Center on 2023 September 6 (UTC). During the in-orbit commissioning phase, the onboard components were activated. Although the gate valve protecting the Resolve sensor with a thin beryllium X-ray entrance window was not yet opened, scientific observation started in 2024 February with the planned performance verification observation program. The nominal observation program commenced with the following guest observation program beginning in 2024 September.
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Nuclear Instruments and Methods in Physics Research A, Apr, 2025 Peer-reviewedThe camera of the Large-Sized Telescopes (LSTs) of the Cherenkov Telescope Array Observatory (CTAO) consists of 1855 pixels that are grouped into 265 high-performance photomultiplier tube (PMT) modules. Each module comprises a seven-light-guide plate, seven PMT units, a slow control board, and a readout board with a trigger board. The requirements for the PMT modules include various aspects, such as photon detection efficiency, dynamic range, buffer depth, and test pulse functionality. We have developed a high-performance PMT module that fulfills all these requirements. Mass-production and quality control (QC) of modules for all four LSTs of the northern CTAO have been completed. Here we report on the technical details of each element of the module and its performance, together with the methods and results of QC measurements....
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Mar, 2025XRISM/Xtend Transient Search (XTS) detected an X-ray flare from an X-ray source XRISM J1747-2832 located at the Galactic central region on 2025-03-19 TT. The source position is determined to be (R.A., Dec.) = (266.761, -28.538), with a systematic error of & sim; 40 arcsec....
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Mar, 2025A follow-up XRISM observation has been performed for the new Galactic centre transient MAXI J1744-294 detected by MAXI on January 2, 2025 (ATels #16975 and #16983)....
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Mar, 2025XRISM/Xtend Transient Search (XTS) detected an increase in X-ray intensity from an X-ray source XRISM J1717-3717 on 2025-02-28 TT. The source position is determined to be (R.A., Dec.) = (259.347, -37.28648), with a systematic error of & sim; 40 arcsec....
Misc.
263-
日本物理学会講演概要集(CD-ROM), 79(1), 2024
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日本物理学会講演概要集(CD-ROM), 78(1), 2023
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日本物理学会講演概要集(CD-ROM), 76(2), 2021
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日本物理学会講演概要集(CD-ROM), 76(1), 2021
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Meeting Abstracts of the Physical Society of Japan, 75 472-472, 2020
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日本物理学会講演概要集(CD-ROM), 75(2), 2020
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Meeting Abstracts of the Physical Society of Japan, 74.1(1) 560-560, Mar 22, 2019
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Meeting Abstracts of the Physical Society of Japan, 74 558-558, 2019
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CTA Report 150: Commissioning test of the focal plane camera of the first CTA Large-Sized Telescope.Meeting Abstracts of the Physical Society of Japan, 74 559-559, 2019
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Meeting Abstracts of the Physical Society of Japan, 74 360-360, 2019
Books and Other Publications
4-
World Scientific Publishing Co. Pte. Ltd.,, Jan, 2019 (ISBN: 9789813270091)
Presentations
150Teaching Experience
53Professional Memberships
6-
Feb, 2011
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Sep, 1998
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Sep, 1998
Research Projects
13-
Grants-in-Aid for Scientific Research, Japan Society for the Promotion of Science, Apr, 2021 - Mar, 2026
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Grants-in-Aid for Scientific Research, Japan Society for the Promotion of Science, Apr, 2021 - Mar, 2026
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Grants-in-Aid for Scientific Research, Japan Society for the Promotion of Science, Apr, 2020 - Mar, 2026
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Grants-in-Aid for Scientific Research, Japan Society for the Promotion of Science, Apr, 2018 - Mar, 2020
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Apr, 2015 - Mar, 2017