Phase shifts of the paired wings of butterfly diagrams  

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

机构地区：[1]National Astronomical Observatories / Yunnan Observatory, CAS, Kunming 650011, China [2]Key Laboratory of Solar Activity, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China [3]Department of Physics, Yunnan Normal University, Kunming 650093, China [4]Research Center for Analysis and Measurement, Kunming University of Science and Technology, Kunming 652094, China

出　　处：《Research in Astronomy and Astrophysics》2010年第11期1177-1185,共9页天文和天体物理学研究（英文版）

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

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.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.

关 键 词：SUN activity - Sun general - Sun SUNSPOTS 

分 类 号：P182.41[天文地球—天文学] Q969.22[生物学—昆虫学]