Hostname: page-component-78c5997874-j824f Total loading time: 0 Render date: 2024-11-10T21:00:53.619Z Has data issue: false hasContentIssue false
  • English
  • Français

Dipole Field, Sunspot Cycle and Solar Dynamo

Published online by Cambridge University Press:  19 July 2016

P.A. Simon  and
J.P. Legrand
P.A. Simon
Affiliation:
Observatoire de Meudon, DASOP 92195, Meudon Principal Cedex, France
J.P. Legrand
Affiliation:
CNRS - INSU 94107, Saint Maur Cedex, France

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.

From the analysis of a series of data concerning phenomena taking place in the high corona, in the interplanetary medium and in the magnetosphere, we came to the conclusion that we have to take into consideration a two-component solar cycle in which, with a 5–6 yr delay, the cycle of the dipole component of the solar magnetic field and the following sunspot cycle are closely correlated. In order to show the new mechanisms to incorporate into a model of a two-component solar cycle, we discuss several other relevant solar data.

Type
2. Long-Term Variability of the Solar Magnetic Cycle
Information
Symposium - International Astronomical Union , Volume 157: The Cosmic Dynamo , 1993 , pp. 97 - 106
Copyright
Copyright © Kluwer 1993 

References

Brown, T.M., Christiensen-Dalsgaard, J., Dziembowski, W.A., Goode, Ph., Gough, D.O. and Morrow, Ch.A.: 1989, Astroph. J. 343, p.526–546.CrossRefGoogle Scholar
Howard, R. and Labonte, B.J.: 1981, ‘Surface magnetic field during the solar activity cycle’, Solar Phys. 74, p.131–145.Google Scholar
Labonte, B.J. and Howard, R.: 1982, ‘Torsionnal waves on the sun and the activity cycle’, Solar Phys. 75, p.161–178.CrossRefGoogle Scholar
Legrand, J.P. and Simon, P.A.: 1981, ‘Ten cycles of solar and geomagnetic activity’, Solar Phys. 70, p. 173–195.Google Scholar
Legrand, J.P. and Simon, P.A.: 1985, ‘Some solar cycle phenomena related to the geomagnetic activity from 1868 to 1980. I. The shock events or the interplanetary expansion of the toroidal field’, Astron. Astrophys. 152, p. 199–204.Google Scholar
Legrand, J.P. and Simon, P.A.: 1987, ‘Two hundred years of auroral activity (1980–1879)’, Annales Geophysicae , 5A (3), p.161–168.Google Scholar
Legrand, J.P. and Simon, P.A.: 1991, ‘A two-component solar cycle’, Solar Phys. 131, p.187–209.Google Scholar
Leroy, J.L. and Noens, J.C.: 1983, ‘Does the solar cycle extend over more than an 11-yr period?, Astron Astrophys. 120, L1–L2.Google Scholar
Mayaud, P.N.: 1973, ‘A hundred year series of geomagnetic data, 1868–1967’, IAGA Bull. 33 , Zürich, 251p.Google Scholar
Morrow, C.A.: 1988, ‘A new picture for the internal rotation of the Sun’, Ph. D. Thesis, University of Colorado, Boulder.Google Scholar
Mouradian, Z., Martres, M.J. and Soru-Escaut, : 1987, ‘Local rigid rotation and the emergence of active centers’, Astron. Astrophys. 183, p.129–134.Google Scholar
Mouradian, Z., Martres, M.J. and Soru-Escaut, I.: 1988, ‘Localisation of sunspots at their maximum development’, Astron. Astrophys. 199, p.318–324.Google Scholar
Ohl, A.I.: 1966, ‘Forecast of sunspot maximum number of cycle 20’, Solnice Danie 12, p.84–85.Google Scholar
Ohl, A.I. and Ohl, G.I.: 1979, ‘A new method of very long term prediction of solar activity’, Solar Terrestrial Predictions Proceeding 2, p.258–263.Google Scholar
Ribes, E., Mein, P. and Mangeney, A.: 1985, ‘A large-scale meridional circulation in the convective zone’, Nature , 318, p.170–171.Google Scholar
Schwabe, H.: 1844, ‘Sonnenflecken Beobachtungen im Jahre 1843’ Astron. Nachrichten 21, 233.Google Scholar
Simon, P.A. and Legrand, J.P.: 1986, ‘Some solar cycle phenomena related to the geomagnetic activity from 1868 to 1980. II. High velocity wind streams and cyclical behaviour of poloidal field’, Astron. Astrophys. 155, p.227–236.Google Scholar
Simon, P.A. and Legrand, J.P.: 1987, ‘Some solar cycle phenomena related to the geomagnetic activity from 1868 to 1980. III. Quiet-days, fluctuating activity or the equatorial belt as the main origin of the solar wind flowing in the ecliptic plane’, Astron. Astrophys. 182, p.329–336.Google Scholar
Simon, P.A. and Legrand, J.A.: 1992, ‘Toward a model of two-component solar cycle’, Solar Phys. 141, p.391–410.Google Scholar
Snodgrass, H.B.: 1987, ‘Torsional oscillations and the solar cycle’, Solar Phys. 110, p.35–49.Google Scholar
Soru-Escaut, I. Martres, M.J. and Mouradian, Z.: 1986, ‘Flare productivity and filaments’, in Solar Terrestrial Prediction proceeding , Simon, P., Heckman, G. and Shea, M. A. (ed.), p.186.Google Scholar
Trellis, M.: 1971, ‘Persistance dans le temps des zones favorables à l'apparition des grands groupes de taches solaires’, C. R. Acad. Sci. Paris, 272, Série B, p.549–552.Google Scholar
Trellis, M.: 1971, ‘Fréquence des groupes de taches solaires en fonction de leur aire moyenne’, C. R. Acad. Sci. Paris, 272, Série B, p.1026–1028.Google Scholar
Waldmeier, M.: 1968, ‘Sonnenenfleckenkurven und die methode der sonnenaktivität prognose’, Astron. Mitt. Eidgenössischen Sternwarte, Zürich , 286.Google Scholar