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Komura Lab
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The lab observes the universe with X-rays and also develops the sensors used for those observations.

AboutAbout the lab
Creating the eyes that "see" the universe to uncover its "truth."
The Komura Lab's research rests on two pillars: astrophysics using observational data from X-ray astronomy satellites, and the development of imaging sensors used for space observation.
The lab studies the physics of extreme environments dominated by ultra-high temperatures, ultra-strong magnetic fields, and ultra-strong gravity, such as black holes, neutron stars, and galaxy clusters.
Having both the perspective to interpret observational data and an understanding of the instruments that produce it is presented as a distinctive feature of the lab.
Requests for lab visits and consultations about enrolling in the lab are accepted by email.
Key terms
- XRISM
- A state-of-the-art satellite that observes cosmic X-rays. The lab analyzes its observational data and is involved in developing the X-ray CCD aboard it.
- Galaxy cluster
- The largest-scale structure in the universe, filled with ultra-hot plasma at hundreds of millions of degrees and growing through repeated collisions and mergers.
- Accretion disk
- A disk rotating at high speed within the extremely strong gravitational field of a black hole.
ResearchResearch themes
The Komura Lab's research rests on two pillars: astrophysics using observational data from X-ray astronomy satellites, and the development of imaging sensors used for space observation. By building sensors, the "eyes" for viewing the universe, and using those eyes to observe the unknown universe, the lab aims to solve the mysteries of the universe.
*Illustrative imageObserving Black Holes and Neutron Stars
Using observations from the XRISM and IXPE satellites, the lab studies accretion disks rotating at high speed in extremely strong gravitational fields, the ultra-hot coronae around them, and outflows ejected at speeds close to the speed of light. For neutron stars as well, XRISM observations are revealing mass accretion from companion stars and outflows one after another.
*Illustrative imageCollisions and Evolution of Galaxy Clusters
The lab studies galaxy clusters, which are filled with ultra-hot plasma at hundreds of millions of degrees and grow through repeated collisions and mergers. By discovering the "non-equilibrium plasma" produced during collisions with Suzaku and XRISM, the lab seeks to firm up the picture of structural evolution on the largest scale in the universe.
*Illustrative imageDevelopment of Sensors for Space Observation
To create the "eyes" themselves that determine the precision of space observation, the lab researches and develops semiconductor imaging sensors. It has been involved in developing the X-ray CCD (SXI) aboard the XRISM satellite, and is improving the performance of XRPIX, a next-generation X-ray SOI pixel detector.
*Illustrative imageApplying Observation Technology to Space Exploration and Medicine
This is a development approach that applies high-performance technology cultivated in astronomical observation to the front lines of society. Examples include a radiation monitor (RiCheS) for lunar surface activity areas in crewed space exploration, and the visualization of drug kinetics and the diagnosis of treatment effects in next-generation nuclear medicine.
MembersFaculty
The members of the Komura Lab consist of faculty members, visiting faculty members, support staff, and master's and undergraduate students.As of 2026
- ProfessorTakayoshi Komura
- Assistant ProfessorShoji Ogawa
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Black hole - Messier 87” Event Horizon Telescope / CC BY 4.0 (cropped)
- Observing Black Holes and Neutron Stars: “Black hole devours a neutron star 04” Dana Berry/NASA / Public domain (cropped)
- Collisions and Evolution of Galaxy Clusters: “Visible-Light and X-Ray Composite Image of Galaxy Cluster 1E )” X-ray: NASA/CXC/M.Markevitch et al.; Optical: NASA/STScI; Magellan/U.Arizona/D.Clowe et al.; Lensing Map: NASA/STScI; ESO WFI; Magellan/U.Arizona/D.Clowe et al. / Public domain (cropped)
- Development of Sensors for Space Observation: “Radar Motion Detector PCB” Bawlsyrup / CC BY-SA 4.0 (cropped)
- Applying Observation Technology to Space Exploration and Medicine: “Medical X-Ray imaging JBZ05 nevit” Nevit Dilmen (talk) / CC BY-SA 3.0 (cropped)
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- Related lab (岡崎研究室): “Peltier-element” Lateiner at German Wikipedia / CC BY-SA 3.0 (cropped)
- Related lab (澤渡研究室): “Neel skyrmion models” Börge Göbel, Ingrid Mertig, Oleg A.Tretiakov / CC BY 4.0 (cropped)
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