Motohide Kokubun (Department of High Energy Astrophysics, Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), 3-1-1 Yoshinodai, Chuo-ku, Sagamihara, Kanagawa 252-5210, Japan)
Kazuo Makishima (The Institute of Physical and Chemical Research (RIKEN), 2-1 Hirosawa, Wako, Saitama 351-0198, Japan)
Yujin E Nakagawa (Center for Earth Information Science and Technology, Japan Agency for Marine-Earth Science and Technology, 3173-25 Showa-machi, Kanazawa-ku, Yokohawa, Kanagawa 236-0001, Japan)
Kazuhiro Nakazawa (Kobayashi-Maskawa Institute (KMI), Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8602, Japan)
Tadayuki Takahashi (Kavli Institute for the Physics and Mathematics of the Universe (WPI), The University of Tokyo Institutes for Advanced Study (UTIAS), The University of Tokyo, 5-1-5 Kashiwa-no-Ha, Kashiwa, Chiba 277-8583, Japan)