Affiliation: | Indian Institute of Astrophysics, Koramangala, Bangalore 560 034, India;Hiroshima Astrophysical Science Center, Hiroshima Univ., 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan;Okayama Astrophysical Observatory, National Astronomical Observatory of Japan, 037-5 Honjo, Asakuchi, Okayama 719-0232, Japan;Department of Physics, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8551, Japan |