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Computational Astrophysics Laboratory
Toshikazu EBISUZAKI
Chief Scientist
Toshikazu EBISUZAKI (Ph.D.)
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Research Areas

Computational Astrophysics Laboratory promotes in JEM-EUSO (Extreme Universe Space Observatory on the Japan experiment module of the International space station) mission that observes giant-air showers by ultra-high-Energy cosmic ray from the orbit. JEM-EUSO is a super wide-field (60 degrees) telescope with a diameter of 2.5 meters planed to be installed in International Space Station. Other active studies are running in parallel for the development of super-high speed special purpose computers and the large scale simulations of bio-molecules and formation process of super massive black-holes and its relation to hypernova/gamma-ray burst, computational materials science, and education with computers.

Research Subject

  1. Extreme Energy Cosmic-Rays
  2. Astrophysical Simulations
  3. Development of Super-High Speed Special-Purose Computers
  4. Materials Science of Earth explored by quantum simulation
  5. Development of a G-APD camera with sub-μsec sampling and its application to bio molecular science

Related links

  1. RIKEN Advanced Science Institute Website_Laboratories PageNew Window
  2. Individual Website Laboratory PageNew Window

RIKEN RESEARCH

January 14,2011
Hydrogen gas: Under pressure
Simulations have explained the peculiar nature of molecular hydrogen vibration under high pressure New Window
December 18, 2009
Supernovae host a pasta dinner
The nuclei in the core of a collapsing supernova can form a range of unusual 'pasta-like' structures New Window
October 05,2007
Just add barium
Squashed carbon balls show promising electronic properties New Window

List of Selected Publications

  1. Ishiyama, T; Makino, J; Ebisuzaki, T
    "Gamma-ray Signal from Earth-mass Dark Matter"
    A stropysical Journalm (Letters), 723, L195-L200, (2010).
  2. Arai, N; Yasuoka, K; Koishi, Y; and Ebisuzaki, T
    "Asymmetric Brownian Moter Driven by Bubble Formation in a Hydrophobic Channel"
    ACS Nano, 4(10) 5905-5913 (2010)
  3. Jianjun Yang, John S Tse and Toshiaki Iitaka
    "First-principles studies of liquid lithium under pressure"
    J. Phys.: Condens. Matter 22, 095503 (2010).
  4. Guoying Gao, Artem R. Oganov, Aitor Bergara, Miguel Martinez-Canales, Tian Cui, Toshiaki Iitaka, Yanming Ma, and Guangtian Zou,
    "High-pressure crystal structures and superconductivity of Stannane (SnH4)"
    PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 107 (4): 1317-1320 JAN 26 2010
  5. Watanabe, G; Sonoda, H; Maruyama, T; Sato, K; Yasuoka, K; Ebisuzaki, T.
    "Formation of Nuclear "Pasta" in Supernovae"
    PHYSICAL REVIEW LETTERS, 103 (12): Art. No. 121101 SEP 18 2009
  6. Matsubara, H; Ebisuzaki, T; Yasuoka, K
    "Microscopic insights into nucleation in a sulfuric acid-water vapor mixture based on molecular dynamics simulation"
    JOURNAL OF CHEMICAL PHYSICS, 130 (10): Art. No. 104705 MAR 14 2009
  7. Koishi, T; Yasuoka, K; Fujikawa, S; Ebisuzaki, T; Zeng, XC.
    "Coexistence and transition between Cassie and Wenzel state on pillared hydrophobic surface"
    PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 106 (21): 8435-8440 MAY 26 2009
  8. Fujimoto, K; Sydora, RD
    "Particle description of the electron diffusion region in collisionless magnetic reconnection"
    PHYSICS OF PLASMAS, 16 (11): Art. No. 112309 NOV 2009
  9. Ogawa, T; Kawasaki, Y; Takizawa, Y; Ebisuzaki, T; Sakaki, N; Higuchi, M; Uchihori, Y; Kitamura, H; Wada, S.
    "Radiation Resistance of Nd-Doped Laser Crystals for Space Application" vJAPANESE JOURNAL OF APPLIED PHYSICS, 48 (8): Art. No. 088001 Part 1 AUG 2009
  10. Kataoka, R; Ebisuzaki, T; Kusano, K; Shiota, D; Inoue, S; Yamamoto, TT; Tokumaru, M.
    "Three-dimensional MHD modeling of the solar wind structures associated with 13 December 2006 coronal mass ejection"
    JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, 114: Art. No. A10102 OCT 6 2009
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