¹ Department of Physics, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8551, Japan
² RIKEN (Institute of Physical and Chemical Research), 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
³ Los Alamos National Laboratory, P.O. Box 1663, Los Alamos, NM 87545
⁴ Department of Astronomy and Astrophysics, University of Chicago, Chicago, IL, 60637
⁵ Center for Space Research, Massachusetts Institute of Technology, 70 Vassar Street, Cambridge MA, 02139
⁶ Laboratoire d'Astrophysique, Observatoire Midi-Pyreńeés, 14 Avenue E. Belin, 31400 Toulouse, France
⁷ Department of Physics, Aoyama Gakuin University, Chitosedai 6-16-1, Setagaya-ku, Tokyo 157-8572, Japan
⁸ National Astronomical Observatory, Osawa 2-21-1, Mitaka, Tokyo 181-8588, Japan
⁹ Tsukuba Space Center, National Space Development Agency of Japan, Tsukuba, Ibaraki 305-8505, Japan
¹⁰ Department of Astronomy, New Mexico State University, 1320 Frenger Mall, Las Cruces, NM 88003-8001
¹¹ University of California at Berkeley, Space Sciences Laboratory, Berkeley, CA 94720-7450
¹² Centre d'Etude Spatiale des Rayonnements, CNRS/UPS, B.P.4346, 31028 Toulouse Cedex 4, France
¹³ Department of Astronomy and Astrophysics, University of California at Santa Cruz, 477 Clark Kerr Hall, Santa Cruz, CA 95064
¹⁴ NASA Goddard Space Flight Center, Greenbelt, MD 20771
¹⁵ Instituto Nacional de Pesquisas Espaciais, Avenida Dos Astronautas 1758, Saõ Josédos Campos 12227-010, Brazil
¹⁶ Department of Astronomy and Astrophysics, Tata Institute of Fundamental Research, Homi Bhabha Road, Bombay 400 005, India
¹⁷ IASF/CNR Sezione di Bologna, via Gobetti 101, 40129 Bologna, Italy
¹⁸ Faculty of engineering, Miyazaki University, Gakuen Kibanadai Nishi, Miyazaki 889-2192, Japan