Institution: | 1. Plasma Dynamics Group, University of Sheffield, Hounsfield Road, Hicks Building, Sheffield S3 7RH, United Kingdom;2. Department of Astronomy, Eötvös University, Pázmány Péter sétány 1/A, H-1118 Budapest, Hungary;3. Babes-Bolyai University, Cluj-Napoca, str. Mihail Kogalniceanu nr. 1, 3400 Cluj-Napoca, Romania |