Affiliation: | 1. Yunnan Astronomical Observatory, CAS, Kunming, 650011, China 2. Key Laboratory of Solar Activity, National Astronomical Observatories, CAS, Beijing, 100012, China 3. Key Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, CAS, Nanjing, 210008, China 4. Physics and Astronomy Department, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
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