Long-term asymmetry in the wings of the butterfly diagram

N. V. Zolotova; D. I. Ponyavin; N. MarwanJ. Kurths

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Long-term asymmetry in the wings of the butterfly diagram

机译：Long-term asymmetry in the wings of the butterfly diagram

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Aims. Sunspot distribution in the northern and southern solar hemispheres exibit striking synchronous behaviour on the scale of aSchwabe cycle. However, sometimes the bilateral symmetry of the Butterfly diagram relative to the solar equatorial plane breaksdown. The investigation of this phenomenon is important to explaining the almost-periodic behaviour of solar cycles.Methods. We use cross-recurrence plots for the study of the time-varying phase asymmetry of the northern and southern hemisphereand compare our results with the latitudinal distribution of the sunspots.Results. We observe a long-term persistence of phase leading in one of the hemispheres, which lasts almost 4 solar cycles andprobably corresponds to the Gleissberg cycle. Long-term variations in the hemispheric-leading do not demonstrate clear periodicitybut are strongly anti-correlated with the long-term variations in the magnetic equator.

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《Astronomy and astrophysics》 |2009年第1期|197-201|共5页
作者
N. V. Zolotova; D. I. Ponyavin; N. MarwanJ. Kurths;
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作者单位

Institute of Physics, Saint-Petersburg State University, Russia;

Interdisciplinary Center for Dynamics of Complex Systems, University of Potsdam, Germany;

Potsdam Institute for Climate Impact Research, Germany;

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原文格式 PDF
正文语种英语
中图分类天文学;
关键词
Sun; activity – Sun; sunspots – Sun; magnetic fields;

Long-term asymmetry in the wings of the butterfly diagram

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