Institution: | [1]Center for Astrophysics, Guangzhou University, Guangzhou 510006, China [2]Physics Institute, Hunan Normal University, Changsha 410081, China [3]Center for Astrophysics, University of Science and Technology of China, Hefei 230026, China [4]Department of Physics and Electronics Science, Hunan University of Arts and Science, Changde 415000, China [5]Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai 200030, China |