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Yamazaki Lab
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The lab observes galaxy clusters and dark matter in X-rays and also builds new detectors.
AboutAbout the lab
Seeing the universe's hot gas with X-ray eyes.
The Yamazaki Lab studies observational astrophysics, which observes the universe in X-rays, and the development of new detectors for that purpose.
The lab is part of the Institute of Space and Astronautical Science (ISAS) of the Japan Aerospace Exploration Agency (JAXA), and Prof. Yamazaki also holds a concurrent appointment in the Department of Physics, Graduate School of Science, the University of Tokyo.
The main research targets include galaxy clusters, galaxies, the large-scale structure of the universe, the soft X-ray background, and dark matter.
The lab takes part in space missions such as the X-ray Imaging and Spectroscopy Mission (XRISM), and also works on the development and applications of microcalorimeters.
Key terms
- Galaxy cluster
- A group of many galaxies bound together by gravity, one of the largest structures in the universe. It is filled with hot gas.
- Dark matter
- Unidentified matter that cannot be seen with light but whose existence is known through its gravity.
- Microcalorimeter
- A detector that precisely measures the energy of an X-ray from the tiny rise in temperature produced when the X-ray hits it.
ResearchResearch themes
In a universe that has evolved from the Big Bang to the present, the lab observes hot matter shining in X-rays to probe the structure of the universe and the nature of dark matter. It pursues both satellite observations and the development of detectors that precisely measure the energy of X-rays.
*Illustrative imageThe Universe's Hot Gas Seen in X-rays
Matter between galaxies reaches temperatures of several million degrees or more and shines in X-rays. The lab observes collisions of galaxy clusters such as the Bullet Cluster and the hot gas in galaxies, and also looks for clues to the tenuous plasma associated with large-scale structure and to dark matter.
*Illustrative imageThe X-ray Imaging and Spectroscopy Mission (XRISM)
The XRISM satellite, launched in September 2023, has begun precise X-ray imaging and spectroscopic observations. A new eye for understanding the universe has opened.
*Illustrative imageDevelopment of TES X-ray Microcalorimeters
At ISAS, the lab makes devices that use the transition between the superconducting and normal states as a thermometer to precisely measure the energy of X-rays. It is also developing ways to increase the number of pixels using microwave SQUID multiplexers, and making devices to search for the axion, a dark matter candidate.
MembersFaculty
The members of the Yamazaki Lab are faculty members, emeritus professors, secretaries, postdoctoral researchers, and students in the doctoral and master's programs.As of 2026
- ProfessorNoriko Yamazaki
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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: “XRISM Model” テレストレラッソ / CC BY-SA 4.0 (cropped)
- The Universe's Hot Gas Seen in X-rays: “XRISM Reveals Its First Look at X-ray Cosmos (SVS14492 - Xtend Abell 2319 with DSS and frame)” NASA's Scientific Visualization Studio - Francis Reddy, Jeanette Kazmierczak, Scott Wiessinger, Sophia Roberts / Public domain (cropped)
- The X-ray Imaging and Spectroscopy Mission (XRISM): “XRISM 001” NASA's Goddard Space Flight Center Conceptual Image Lab / Public domain (cropped)
- Development of TES X-ray Microcalorimeters: “XRISM Resolve Animation (SVS14244)” NASA's Scientific Visualization Studio - Scott Wiessinger, Francis Reddy, Brian J. Williams / Public domain (cropped)
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