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What does the physics look like in extreme environments ?
In the universe, uncountable phenomena which cannot be realized on the earth are happening every second.
I am especially interested in Cosmic Rays, some of which can reach 1020 eV.
They will tell us fundamental physics we don’t know yet.

Recent posts

XRISM international conference 2025 @Kyoto

A conference to showcase the XRISM’s performance and scientific results, and to discuss the future, has been held in Kyoto, Japan on Oct. 20–24 (XRISM 2025). It was an excellent experience to be there and to give a review talk on the plasma physics of supernova remnants. Many authorities in astronomy and astrophysics were there…

XRISM solar flare paper

Our paper on the solar flare physics using the full performance of XRISM has been accepted for publication in PASJ (ADS). In its first ~2 years XRISM experienced a lot of solar flare events, which often made observable events in the detectors on XRISM. Although celestial observations are rarely affected, solar X-ray events are recorded…

Multi-wavelength study of a TeV-unidentified source near a supernova remnant

We studied a TeV source without clear counterparts in other wavelengths but close to the supernova remnant G335.2+0.1 (Oka et al. 2025, ApJ; ADS). We used radio continuum, radio lines, X-rays, and gamma-rays to understand what is going on in this interesting system. What was unique was, in this system, we can trace some physical…

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