Researcher Database

（Last updated : 2025-09-02 15:51:34）　

MORI Masaki

Department / Course College of Science and Engineering Department of Physical Sciences

Title / Position Professor

Other Affiliations
1.	Graduate School of Science and Engineering

Academic background
1.	1988/07 Degree Acquisition	│ Kyoto University Doctor of Science
2.	1985/03 Degree Acquisition	│ Kyoto University Master of Science
3.	1983/03 Degree Acquisition	│ Kyoto University Bachelor of Science
4.	～1983/03	Faculty of Science │ Kyoto University │ Graduated
5.	～1988/03	Department of Physics II , Doctor course │ Graduate School of Science, │ Kyoto University │ Accomplished credits for doctoral program

Committee and society
1.	2011 ～ 2017	International Union of Pure and Applied Physics Commission 4 member

Research activities
1.		The Physical Society of Japan
2.		Astronomical Society of Japan
3.		International Astronomical Union

Subject of research
1.	Experimental study of cosmic-ray Physics
2.	Study of astrophysics with high-energy gamma-ray observation

Research summary
Experimental study of astrophysics with high-energy gamma-rays We study high energy astrophysics using gamma ray, the light with the shortest wavelength. Gamma ray is closely associated with high energy phenomena in active celestial bodies such as compact celestial bodies and surrounding enormous black hole, because gamma ray is generated from grains accelerated in nonthermal manner. Based on the gamma ray data observed by a Fermi gamma ray space telescope, CALET cosmic ray observation device installed at the international space station and other equipment, we are trying to address the issue of origin of high energy cosmic ray as well as clarifying high energy celestial bodies phenomena associated with the accelerated grains, different from electric wave or thermal radiation such as infrared and visible light. We also observe time-varying celestial bodies with a 60cm catoptrics telescope installed at BKC campus.

Present specialized field
Particle/Nuclear/Cosmic ray/Astro physics, Astronomy (Keyword：gamma-rays, supernova remnants, pulsar/pulsar nebula, active galactic nuclei, high-energy cosmic-rays)

Books
1.	2003	The Universe Viewed in Gamma-Rays
2.	1994	Physics and Astrophysics of Neutrinos │ ,pp.849-899

Papers
1.	2025/08/01	Detected Abundances of Nuclei Relative to 26Fe for Elements 14Si through 44Ru with CALET on the International Space Station │ Astrophysical Journal │ 988,pp.148
2.	2025/07/08	Precision spectral measurements of chromium and titanium from 10 to 250 GeV/n and sub-iron to iron ratio with the Calorimetric Electron Telescope on the International Space Station │ Physical Review Letters │ 135,pp.021002
3.	2023/11/10	Direct measurement of the spectral structure of cosmic-ray electrons+positrons in the TeV region with CALET on the International Space Station │ Physical Review Letters │ 131,pp.191001
4.	2023/05/25	Charge-sign dependent cosmic-ray modulation observed with the Calorimetric Electron Telescope on the International Space Station │ Physical Review Letters │ 130,pp.211001
5.	2022/12/16	Cosmic-ray boron flux measured from 8.4 GeV/n to 3.8 TeV/n with the Calorimetric Electron Telescope on the International Space Station │ Physical Review Letters │ 129,pp.251103
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Academic conference presentation
1.	2023/07/31	Results from CALorimetric Electron Telescope (CALET) Observations of Gamma-rays on the International Space Station
2.	2022/01/06	Observation and Analysis of High-energy Gamma-rays observed with CALET on the ISS
3.	2021/09/16	Analysis of High-energy Gamma-rays observed with CALET for five years
4.	2021/07/19	High-energy gamma-ray observations above 10 GeV with CALET on the International Space Station
5.	2021/07/05	CALET search for Gamma-ray Counterparts of Gravitational Wave Events
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Teaching achievements

●Other Special Instructions about Teaching Activities

1.	2012/11 ～ 2012/11	高大連携講義： Lecture at Japan Super Science Fair (Ritsumeikan High School, BKC Campus, Nov. 11, 2012) "Looking into the Universe