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Time-Dependent Magneto-Convection with Hexagonal Planform

Published online by Cambridge University Press:  25 April 2016

J.M. Lopez
Affiliation:
Department of Mathematics, Monash University
J.O. Murphy
Affiliation:
Department of Mathematics, Monash University

Extract

High-resolution observations indicate that very strong, small scale magnetic fields in the solar photosphere are concentrated into ropes which emerge through it. The scale of these ropes is only a few hundred kilometres across (Stenflo 1976) and their strength is estimated to vary between 1,000 and 2,000 G (Harvey 1977). These features are closely related to photospheric granular convection. The flux is observed as X-ray bright spots and sheet-like crinkles in the dark intergranular lanes, and is buffeted and shifted about by the granules (Dunn and Zirker 1973). Further, the crinkles can be resolved into separate features which outline small micropores as though a flux sheet at the end of a convection cell has separated into several isolated tubes (Galloway and Weiss 1981).

Type
Contributions
Copyright
Copyright © Astronomical Society of Australia 1982

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References

Chandrasekhar, S., ‘Hydrodynamic and Hydromagnetic Stability’, Oxford University Press (1961).Google Scholar
Christopherson, D.G., Quart J. of Math. (Oxford Series), 11, 63 (1940).CrossRefGoogle Scholar
Cowling, T.G., ‘Magnetohydrodynamics’, Adam-Hilger (1976).Google Scholar
Dunn, R.B., and Zirker, J.B., Solar Phys., 33, 281 (1973).Google Scholar
Galloway, D.J., and Moore, D.R., Geophys. Ap. Fluid Dyn., 12, 73 (1979).Google Scholar
Galloway, D.J., and Weiss, N.O., Astrophys. J., 243, 945 (1981).Google Scholar
Harvey, J.W., in ‘Highlights of Astronomy’, ed Müiller, E. (Dordrecht:Reidel) (1977).Google Scholar
Stenflo, J.O., in I.A.U. Symposium 71, ‘Basic Mechanisms of Solar Activity’, ed. Bumba, V. and Kleczek, J. (Dordrecht: Reidel) (1976).Google Scholar
Van der Borght, R., and Murphy, J.O., Aust. J. Phys., 26, 617(1973).Google Scholar
Van der Borght, R., Murphy, J.O., and Spiegel, E.A., Aust. J. Phys., 25, 702 (1972).CrossRefGoogle Scholar
Weiss, N.O., Adv. Chem. Phys., 32, 101 (1975).Google Scholar
Weiss, N.O., J. Fluid Mech., 108, 247 (1981a).Google Scholar
Weiss, N.O., J. Fluid Mech., 108, 273 (1981b).Google Scholar