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Vector Potential Magnetic Null Points

Published online by Cambridge University Press:  12 April 2016

Klaus Galsgaard  and
Åke Nordlund
Klaus Galsgaard
Affiliation:
Copenhagen University Observatory, Øster Voldgade 3, 1350 Copenhagen K, Denmark
Åke Nordlund
Affiliation:
Copenhagen University Observatory, Øster Voldgade 3, 1350 Copenhagen K, Denmark

Extract

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Recent observations (Tarbell et al., 1990; see also Ruzmaikin et al. these Proceedings) show that the surface distribution of magnetic fields on the solar surface is selfsimilar, with an approximately constant fractal dimension over a large range of horizontal scales. Also, recent ideas about flare energy release assumes a “fibrous” corona, with the energy release consisting of many small scale events (Vlahoz, 1989) Prompted partly by these observations, we investigate the properties of self-similar three-dimensional magnetic fields.

Type
Part I Convection and turbulence as the basis of magnetic activity
Information
International Astronomical Union Colloquium , Volume 130: The Sun and Cool Stars: activity, magnetism, dynamos , 1991 , pp. 89 - 91
Copyright
Copyright © Springer-Verlag 1991

References

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Galsgaard, K., Nordlund, Å.: 1990a, in The Dynamic Sun, ed. Dezsõ, L., Debrecen, p. 146 Google Scholar
Galsgaard, K., Nordlund, Å.: 1990b, in Mechanisms of Chromospheric and Coronal Heating, ed. Ulmschneider, P. et al., Springer, Berlin, in pressGoogle Scholar
Green, J.M.: 1988, J.Geophys. Res 93, 8583 CrossRefGoogle Scholar
Tarbell, T. et al.: 1990, Solar Photosphere: Structure, Convection and Magnetic Fields, Stenflo, J.O. (ed.), IAU Symp. 138, Kluwer, Dordrecht, p. 147 CrossRefGoogle Scholar
Vlahoz, L.: 1989, Solar Phys. 121, 431 Google Scholar