Phase shifts of the paired wings of butterfly diagrams

作     者：Ke-Jun Li Hong-Fei Liang Wen Feng 

作者机构：National Astronomical Observatories / Yunnan Observatory CAS Kunming 650011 China Key Laboratory of Solar Activity National Astronomical Observatories Chinese Academy of Sciences Beijing 100012 China Department of Physics Yunnan Normal University Kunming 650093 China Research Center for Analysis and Measurement Kunming University of Science and Technology Kunming 652094 China 

出 版 物：《Research in Astronomy and Astrophysics》 (天文和天体物理学研究（英文版）)

年 卷 期：2010年第10卷第11期

页      面：1177-1185页

核心收录：

学科分类：0710[理学-生物学] 07[理学] 09[农学] 070401[理学-天体物理] 0704[理学-天文学] 

基　　金：supported by the National Natural Science Foundation of China (Grant Nos.10873032,10921303 and 40636031) the National Key Research Science Foundation (2006CB806303) 

主　　题：Sun activity - Sun general - Sun sunspots 

摘      要：Sunspot groups observed by the Royal Greenwich Observatory/US Air Force/NOAA from 1874 May to 2008 November and the Carte Synoptique solar filaments from 1919 March to 1989 December are used to investigate the relative phase shift of the paired wings of butterfly diagrams of sunspot and filament activi- ties. Latitudinal migration of sunspot groups （or filaments） does asynchronously occur in the northern and southern hemispheres, and there is a relative phase shift between the paired wings of their butterfly diagrams in a cycle, making the paired wings spa- tially asymmetrical on the solar equator. It is inferred that hemispherical solar activity strength should evolve in a similar way within the paired wings of a butterfly diagram in a cycle, demonstrating the paired wings phenomenon and showing the phase rela- tionship between the northern and southern hemispherical solar activity strengths, as well as a relative phase shift between the paired wings of a butterfly diagram, which should bring about almost the same relative phase shift of hemispheric solar activity strength.