Centers & Labs

Chief Scientist Laboratories

Computational Astrophysics Laboratory

Chief Scientist: Toshikazu Ebisuzaki (Ph.D.)
Toshikazu  Ebisuzaki(Ph.D.)

We promote the EUSO (Extreme Universe Space Observatory onboard Japanese Experiment Module) mission to explore the origin of extreme energy particles, above 1020eV. In addition, we conduct studies of the wakefield acceleration of ultra high energy cosmic rays around accreting supermassive blackholes. formation and merging of a black hole binary. Next, we also study the formation process of the life planets and the origin of life in the Hadean Earth, joining KAKENHI Grant-in-Aid for Scientific Research on Innovative Areas“Hadean Bioscience”. We are proposing “Tandem planet model” as a new frame work of planetary formation.

Main Research Field

Mathematical and physical sciences

Related Research Fields

Informatics / Interdisciplinary science and engineering / Biology

Astrophysics / Computational Science


  • Ultra High Energy Cosmic-Rays
  • Space debris
  • Supercomputing, Black hole
  • Planetary formation
  • Origin of Life

Selected Publications

  1. Toshikazu Ebisuzaki,, Mark N. Quinn, Satoshi Wada, Lech Wiktor Piotrowski, Yoshiyuki Takizawa, Marco Casolino, Mario E. Bertaina, Philippe Gorodetzky, Etienne Parizot, Toshiki Tajima, Rémi Soulard, Gérard Mourou.:
    "Demonstration designs for the remediation of space debris from the International Space Station"
    Acta Astronautica 112, 102-113 (2015)
  2. Ebisuzaki T, Maruyama S.:
    "United theory of biological evolution: Disaster-forced evolution through Supernova, radioactive ash fall-outs, genome instability, and mass extinctions"
    Geoscience Frontiers 6, 103-119 (2015)
  3. Fumiyoshi Kajino, Toshikazu Ebisuzaki, Marco Casolino, Yoshiyuki Takizawa, Yoshiya Kawasaki, Naoto Sakaki, Sergei Sharakin, Pavel Klimov, Mikhail I. Panashyuk for the JEM-EUSO Collaboration.:
    "K-EUSO: An improved optical system for KLYPVE ultra-high energy cosmic ray space telescope"
    Proc. 34th ICRC (Hague), 634 (2015)
  4. The JEM-EUSO Collaboration.:
    "The JEM-EUSO mission: An introduction"
    Special Issue on the JEM-EUSO Mission, Experimental Astronomy 40, 3-17 (2015), ISSN: 0922-6435
  5. Ebisuzaki, T. and Tajima, T.:
    "Astrophysical ZeV acceleration in the relativistic jet from an accreting supermassive blackhole"
    Astroparticle Physics, 56, 9-15. (2014)
  6. Maruyama, S. and Ebisuzaki, T.:
    "Origin of the Earth: A proposal of new model called ABEL"
    Geoscience Frontiers, 8,2,253-274(2017)
  7. Imaeda, Y. and Ebisuzaki, T.:
    "Tandem planet formation for solar system-like planetary systems"
    Geoscience Frontiers, 8,2,223-231(2017)
  8. Zhi Li, Qiong Liu, Shujuan Han, Toshiaki Iitaka, Haibin Su, Takami Tohyama, Huaidong Jiang, Yongjun Dong, Bin Yang, Fangfang Zhang, Zhihua Yang, and Shilie Pan.:
    "Nonlinear electronic polarization and optical response in borophosphate BPO4"
    Phys. Rev. B 93, 245125 (2016).
  9. Y. Kuramitsu, A. Mizuta, et al.
    "Time Evolution of Kelvin-Helmholtz Vortices Associated with Collisionless Shocks in Laser-produced Plasmas"
    Astrophysical Journal, 828, 93 (2016)
  10. Shirao T, Ueno K, Abe T and Matsuyama T.:
    "Development of DNA markers for identifying chrysanthemum cultivars generated by ion-beam irradiation"
    Molecular Breeding 31:729-735, (2013)

Lab Members

Principal Investigator

Toshikazu Ebisuzaki
Chief Scientist

Core Members

Toshiaki Iitaka
Senior Research Scientist
Tomoki Matsuyama
Senior Research Scientist
Yoshiyuki Takizawa
Senior Research Scientist
Akira Mizuta
Research Scientist
Le The Anh
Postdoctoral Researcher
Teppei Suzuki
Contract Researcher
Tsutomu Kawatsu
Contract Researcher
Yoshiaki Kato
Contract Researcher
Iriko Kaneko
Technical Staff I
Masanori Tachikawa
Visiting Scientist
Naohito Nakasato
Visiting Scientist
Francesco Fenu
Visiting Scientist
Daikou Shiota
Visiting Scientist

Contact information

2-1 Hirosawa, Wako, Saitama 351-0198, Japan

Email: cap-labinfo [at]

Related links

Annual research report