Affiliation: | 1. Space Sciences Laboratory, University of California, Berkeley, USA 2. Kyung Hee University, Suwon, Korea 3. School of Astronautics, Beihang University, Beijing 100191 4. Institute for Space Physics, Peking University, Beijing 100871 5. State Key Laboratory of Space Weather, Center for Space Science and Applied Research, Chinese Academy of Sciences, Beijing 100190 |