1. Purple Mountain Observatory Chinese Academy of Sciences Nanjing China
2. School of Astronomy and Space Science University of Science and Technology of China Hefei China
3. School of Space and Environment Beihang University Beijing China
4. Key Laboratory of Space Environment Monitoring and Information Processing Ministry of Industry and Information Technology Beijing China
5. Physics Department Auburn University Auburn AL USA
6. Department of Geophysics Yunnan University Kunming China
7. RAL Space STFC Oxfordshire UK
8. Center for Excellence in Comparative Planetology Hefei China