JAXA Supercomputer System Annual Report February 2025-January 2026 Report Number: R25EDG20500 Subject Category: Research and Development PDF Responsible Representative: Koji Matsumoto, Research and Development Directorate, Research Unit II Contact Information: Noritaka Sako(sako.noritaka@jaxa.jp) Members: Noritaka Sako Abstract In bipropellant thrusters that use hypergolic liquid fuel and liquid oxidizer as propellants, an explosive ignition phenomenon accompanied by a steep pressure rise—referred to as a hard start—has been observed in past thruster development activities, differing from normal ignition behavior. In the worst case,・・・<<read more>>
JAXA Supercomputer System Annual Report February 2025-January 2026 Report Number: R25EDU10506 Subject Category: Space and Astronautical Science PDF Responsible Representative: Ken EBISAWA, Department of Astrophysics, ISAS Contact Information: Ken EBISAWA(ebisawa.ken@jaxa.jp) Members: Ken Ebisawa, Kiyoshi Ikuma, Ryosuke Moriguchi, Tamaki Murokoshi, Yuya Nagano, Shunsuke Okumura, Yuki Sakurai, Ryota Takaku, Masahiro Tsujimoto, Hayato Takakura, Issei Yamamura Abstract Using all-sky survey data from the Akari satellite, we will develop a model of galactic foreground radiation that is essential for analyzing data from future cosmic・・・<<read more>>
JAXA Supercomputer System Annual Report February 2025-January 2026 Report Number: R25EDU10507 Subject Category: Space and Astronautical Science PDF Responsible Representative: Ken EBISAWA, Dapartment of Astrophysics, ISAS Contact Information: Ken EBISAWA (ebisawa.ken@jaxa.jp) Members: Nagi Atsuchi, Satoshi Eguchi, Ken Ebisawa, Kotaro Fukushima, Katsuhiro Hayashi, Yoshiaki Kanemaru, Miki Kurihara, Yuto Mochizuki, Daiki Miura, Yuya Nakatani, Shoji Ogawa, Naoto Sameshima, Masahiro Tsujimoto, Ryosuke Uematsu Abstract In the XRISM project, use JSS to re-process a large amout of XRISM low-level datasets to high-level science ready・・・<<read more>>
JAXA Supercomputer System Annual Report February 2025-January 2026 Report Number: R25EDU20199 Subject Category: Space and Astronautical Science PDF Responsible Representative: Ryuichi Fujimoto, Professor, Institute of Space and Astronautical Science, Department of Space Astronomy and Astrophysics Contact Information: Ryo Nagata(nagata.ryo@jaxa.jp) Members: Yusuke Itai, Ryo Nagata, Shugo Oguri, Rion Takahashi, Karen Tateoka, Hayato Takakura Abstract LiteBIRD is a strategic large-class mission of the Institute of Space and Astronautical Science (ISAS), JAXA. The satellite will be equipped with a wide-field reflective telescope incorporating・・・<<read more>>
JAXA Supercomputer System Annual Report February 2025-January 2026 Report Number: R25EDA201A32 Subject Category: Aeronautical Technology PDF Responsible Representative: Hiroyuki Abe, Aviation Technology Directorate, Fundamental Aeronautics Research Unit Contact Information: Takashi Ozawa(ozawa.takashi@jaxa.jp) Members: Yuki Ide, Shingo Matsuyama, Takashi Ozawa, Toshiyuki Suzuki Abstract In this study, we try to enhance physical models for high temperature gas and numerical simulation method to accurately predict heating and aerodynamic characteristics at atmospheric entry. We aim to develop high fidelity simulation tool by demonstrating improvement of・・・<<read more>>
