Affiliation: | 1. KFKI Research Institute for Particle and Nuclear Physics, Space Physics, H-1525 Budapest, P.O. Box 49, Hungary;2. Max Planck Institute for Solar System Research, Max-Planck-Str. 2, 37191 Lindau-Katlenburg, Germany;3. CESR, 9, Avenue du Colonel ROCHE, 31028 Toulouse CEDEX 4, France |