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Nature of the unusually long solar cycles

Published online by Cambridge University Press:  26 August 2011

Nadezhda Zolotova  and
Dmitri Ponyavin
Nadezhda Zolotova
Affiliation:
Institute of Physics, St. Petersburg State University, 198504 St. Petersburg, Russia email: ned@geo.phys.spbu.ru
Dmitri Ponyavin
Affiliation:
Institute of Physics, St. Petersburg State University, 198504 St. Petersburg, Russia email: ned@geo.phys.spbu.ru
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Abstract

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The evolution of prolonged and unusually long solar cycles such as 23rd, 20th, and especially 4th is considered. Why the length of the 4th cycle was exceptionally large or really composed of two short cycles? Are the prolonged solar minima can be considered as precursor of low activity of the next cycles? Resolving these puzzles seems to be very important for dynamo theories trying to explain the solar long-term variations. We propose a possible model of the butterfly diagram during unusually long and prolonged cycles, based on (i) the Gnevyshev idea of sunspot distribution over the latitudes, and (ii) the phase differences of the northern and southern hemispheric activities.

Keywords

Sun: activitysun: magnetic fieldssun: sunspots
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 6 , Symposium S273: The Physics of Sun and Star Spots , August 2010 , pp. 169 - 173
Copyright
Copyright © International Astronomical Union 2011

References

Bankoti, N. S., Joshi, N. C., Pande, S., Pande, B., Pandey, K.New Astron., 15, 561CrossRefGoogle Scholar
Antalová, A. & Gnevyshev, M. N. 1983, Contributions of the Astronomical Observatory Skalnate Pleso, 11, 63Google Scholar
Gnevyshev, M. N. 1963, Soviet Astron., 7, 311Google Scholar
Gnevyshev, M. N. 1966, Soviet Phys. Uspekhi, 90, 291Google Scholar
Gnevyshev, M. N. 1967, Solar Phys., 1, 107CrossRefGoogle Scholar
Gnevyshev, M. N. 1977, Solar Phys., 51, 175CrossRefGoogle Scholar
Gnevyshev, M. N. & Ohl, A. I. 1966, Soviet Astron., 9, 765Google Scholar
Arlt, R. 2008, Solar Phys., 247, 399Google Scholar
Arlt, R. 2009, Astron. Nachr., 330, 311CrossRefGoogle Scholar
Arlt, R. 2009, Solar Phys., 255, 143CrossRefGoogle Scholar
Usoskin, I. G., Mursula, K., Arlt, R., & Kovaltsov, G. A. 2009, Astrophys. J. Lett., 700, L154CrossRefGoogle Scholar
Hoyt, D. V. & Schatten, K. H. 1998, Solar Phys., 179, 189Google Scholar
Zolotova, N. V., Ponyavin, D. I., Marwan, N., & Kurths, J. 2009, Astron. Astrophys, 503, 197Google Scholar