Hostname: page-component-cd9895bd7-dk4vv Total loading time: 0 Render date: 2024-12-25T16:46:31.186Z Has data issue: false hasContentIssue false
  • English
  • Français

North-south asynchrony and long-term variations of sunspot latitudes

Published online by Cambridge University Press:  01 November 2008

Nadezhda V. Zolotova  and
D. I. Ponyavin
Nadezhda V. Zolotova
Affiliation:
Institute of Physics, Saint-Petersburg State University, Russia email: [email protected]
D. I. Ponyavin
Affiliation:
Institute of Physics, Saint-Petersburg State University, Russia email: [email protected]
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

The long-term records of sunspot area available separately for Northern and Southern Hemispheres have been investigated by means of cross-recurrence technique. Phase component of the north-south asymmetry was extracted. This measure demonstrates long-period systematic variations with the sign change of hemispheric leading in 1930s and 1960s. Moreover phase north-south asynchrony anticorrelates with the so called magnetic equator, which was defined as difference of the mean sunspot latitudes between two hemispheres. Relationships of the phase north-south asynchrony, magnetic equator and butterfly diagrams are presented and discussed.

Keywords

Sun: activity – sunspots – magnetic fields
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 4 , Symposium S259: Cosmic Magnetic Fields: From Planets, to Stars and Galaxies , November 2008 , pp. 237 - 238
Copyright
Copyright © International Astronomical Union 2009

References

Marwan, N., Romano, M. C., Thiel, M., & Kurths, J. 2007, Phys. Reports 438, 237CrossRefGoogle Scholar
Pulkkinen, P. J., Brooke, J., Pelt, J., & Tuominen, I. 1999, A&A 341, L43Google Scholar