Affiliation: | [1]Key Laboratory of Solar Activity, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China [2]Lockheed Mrtin Solar and Astrophysics Laboratory, Department ADBS, Building 252, 3251 Hanover Street, Palo Alto, CA 94304, USA [3]W. W. Hansen Experimental Physics Laboratory, Stanford University, Stanford, CA 94305, USA |