Affiliation: | 1. Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210023;2. School of Physics and Optoelectronic Engineering, Nanjing University of Information Science and Technology, Nanjing 210044;3. School of Astronomy and Space Science, University of Science and Technology of China, Hefei 230026;1. Department of Physics and Astronomy, University of Alabama, Tuscaloosa, AL 35487, USA;2. Consortium for Fundamental Physics, School of Physics and Astronomy, University of Manchester, Manchester M13 9PL, United Kingdom;1. School of Physics and Electronic Information Technology, Yunnan Normal University, Kunming 650500;2. Key Laboratory of High Energy Astrophysics of University of Yunnan Province, Kunming 650500;1. Department of Astronomy, University of Science and Technology of China, Hefei 230026;2. Polar Research Institute of China, Shanghai 200136;3. Center for Astrophysics, Guangzhou University, Guangzhou 510006;4. Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216;1. Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210008;2. University of Chinese Academy of Sciences, Beijing 100049;3. Key Laboratory of Planetary Sciences, Chinese Academy of Sciences, Nanjing 210008 |