JAXA Supercomputer System Annual Report February 2025-January 2026

Report Number: R25EDU10503

Subject Category: Space and Astronautical Science

PDF (to be added)

• Responsible Representative: Masahiro Tsujimoto, assistant professor, department of astrophysics
• Contact Information: Masahiro Tsujimoto(Tsujimoto.masahiro@jaxa.jp)
• Members: Nagi Atsuchi, Ken Ebisawa, Yoshiaki Kanemaru, Miki Kurihara, Ryosuke Moriguchi, Yuto Mochizuki, Daiki Miura, Satoshi Nakahira, Shoji Ogawa, Naoto Sameshima, Masahiro Tsujimoto

Abstract

High-level data processing of science observing satellites

Reference URL

N/A

Reasons and benefits of using JAXA Supercomputer System

Use of large scale memory and parallel computing

Achievements of the Year

As listed in the publications below.

Publications

- Peer-reviewed papers

Masahiro TSUJIMOTO, Daiki MIURA1, Hiroya YAMAGUCHI1, et al. "Fe XVIII–XXIV Kβ Inner-Shell Absorption Lines in the X-Ray Spectra of Neutron Star and Black Hole Binaries with XRISM", PFR

aoto SAMESHIMA, Masahiro TSUJIMOTO, Makoto UEMURA "X-ray Doppler tomography of Fe Kα emission in a low-mass X-ray binary 4U 1822-371", PASJ

Yael Naze, Masahiro Tsujimoto, Gregor Rauw, and Sean J. Gunderson "Orbital motion detected in gamma Cas Fe K emission lines", A&A

Yutaro NAGAI, Teruaki ENOTO, Masahiro TSUJIMOTO, et al. "Energy shift of Fe-K fluorescence lines due to low ionization demonstrated with XRISM in Centaurus X-3", PASJ

Midooka, T., , Mizumoto, M., Ebisawa, K. "Indication of the Less-ionized Clumpy Ultra-Fast Outflows in Seyfert Galaxies", PASJ

Masahiro TSUJIMOTO, Teruaki ENOTO, Maria DIAZ TRIGO, et al. "Outflowing photoionized plasma in Circinus X-1 using the high-resolution X-ray spectrometer Resolve onboard XRISM and the radiative transfer code cloudy", PASJ

Yuto MOCHIZUKI, Masahiro TSUJIMOTO, Maurice A. LEUTENEGGER, et al. "Benchmark of the Fe XXV R ratio in photoionized plasma during eclipse of Centaurus X-3 with XRISM/Resolve", PASJ

Yuto Mochizuki, Masahiro Tsujimoto, Caroline A. Kilbourne, et al. "Optimization of X-ray event screening using ground and in-orbit data for the Resolve instrument onboard the XRISM satellite", JATIS

Kurihara, M., , Tsujimoto, M., Loewenstein, M. et al. "XRISM view of a stellar flare: High-resolution Fe K spectra of HR 1099, an RS CVn-type star", PASJ

Kurihara, M., Tsujimoto, M, Ardard, M, et al. "Spectroscopic diagnostics of high-temperature plasma in stellar corona using Fe XXIV--XXVI K-shell lines with XRISM", PASJ

Chamani M. Gunasekera, Peter A. M. van Hoof, Masahiro Tsujimoto, Gary J. Ferland, "New Insights with XRISM Cloudy: A Novel Column Density Diagnostics", A&A

Usage of JSS

Computational Information

• Process Parallelization Methods: N/A
• Thread Parallelization Methods: N/A
• Number of Processes: 1
• Elapsed Time per Case: 24 Hour(s)

JSS3 Resources Used

Fraction of Usage in Total Resources*1(%): 0.15

Details

Please refer to System Configuration of JSS3 for the system configuration and major specifications of JSS3.

*1: Fraction of Usage in Total Resources: Weighted average of three resource types (Computing, File System, and Archiver).

*2: Fraction of Usage：Percentage of usage relative to each resource used in one year.

ISV Software Licenses Used

*2: Fraction of Usage：Percentage of usage relative to each resource used in one year.

JAXA Supercomputer System Annual Report February 2025-January 2026