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Connecting a Star’s Convection Zone with its Corona

Published online by Cambridge University Press:  25 April 2016

D. J. Galloway  and
C. A. Jones
D. J. Galloway
Affiliation:
School of Mathematics and Statistics, University of Sydney, NSW 2006, Australia. [email protected]
C. A. Jones
Affiliation:
Department of Mathematics, University of Exeter, EX4 4QE, UK
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Abstract

This paper discusses problems which have as their uniting theme the need to understand the coupling between a stellar convection zone and a magnetically dominated corona above it. Interest is concentrated on how the convection drives the atmosphere above, loading it with the currents that give rise to flares and other forms of coronal activity. The role of boundary conditions appears to be crucial, suggesting that a global understanding of the magnetic field system is necessary to explain what is observed in the corona. Calculations are presented which suggest that currents flowing up a flux rope return not in the immediate vicinity of the rope but rather in an alternative flux concentration located some distance away.

Keywords

convection — magnetic fields — starscoronae — Sunsunspots — flares
Type
Galactic and Stellar
Information
Publications of the Astronomical Society of Australia , Volume 12 , Issue 2 , August 1995 , pp. 180 - 185
Copyright
Copyright © Astronomical Society of Australia 1995

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References

Aly, J. J., 1992, in Topological Aspects of the Dynamics of Fluids and Plasmas, ed. Moffatt, H.K., Zaslavsky, G. M., Comte, P. & Tabor, M. (Dordrecht: Kluwer), 167 Google Scholar
Anzer, U., & Galloway, D. J., 1983, MNRAS, 203, 637 Google Scholar
Anzer, U., & Galloway, D. J., 1985, in Chromospheric Diagnostics & Modelling, Proceedings, Sacramento Peak Observatory Workshop, ed. Lites, B. (Sunspot, New Mexico: Sacramento Peak Observatory), 199 Google Scholar
Childress, S., 1979, Phys. Earth Plan. Int. 20, 172 Google Scholar
Drobyshevski, E. M., & Yuferev, V. S., 1974, J. Fluid Mech. 65, 33 Google Scholar
Galloway, D. J., & Moore, D. R., 1979, Geophys. Astrophys. Fluid Dynamics 12, 73 Google Scholar
Galloway, D. J., & Proctor, M. R. E., 1983, Geophys. Astrophys. Fluid Dynamics 24, 109 Google Scholar
Heyvaerts, J., & Priest, E. R., 1984, A&A 137, 63 Google Scholar
Jones, C.A. & Galloway, D. J. 1993a, J. Fluid Mech. 253, 297 Google Scholar
Jones, C. A., & Galloway, D. J. 1993b, in Theory of Solar and Planetary Dynamos, ed. Proctor, M. R. E. Matthews, P. & Rucklidge, A. M. (Cambridge Univ.)Google Scholar
Kusano, K., Suzuki, Y., Kubo, H., Miyoshi, T., & Nishikawa, K. 1994, ApJ, submittedGoogle Scholar
Lang, J. 1994 Honours thesis, University of Sydney Google Scholar
Low, B.-C., 1990, ARA&A 28, 491 Google Scholar
Melrose, D. B., 1991, ApJ 381, 306 Google Scholar
Newkirk, G. Jr. & Harvey, J., 1968, Solar Phys. 3, 321 Google Scholar
Pevtsov, A. A., Canfield, R. C, & Metcalf, T. R., 1994, ApJ 425, L117 Google Scholar
Sakurai, T., 1979, PASJ 31, 209 Google Scholar
Seehafer, N., 1978, Solar Phys. 58, 215 Google Scholar
Shibata, K., & Uchida, Y., 1988, Solar Phys. 116, 291 Google Scholar
Steinolfson, R., 1990, in Geophysical Monographs 58: Physics of Magnetic Flux Ropes, ed. Russell, C.T., Priest, E. R. & Lee, L.C. (Washington DC: American Geophysical Union) 211 Google Scholar
Taylor, J. B., 1974, Phys. Rev. Lett. 33, 1139 Google Scholar
Wheatland, M. S., & Melrose, D. B., 1994, Aust. J. Phys. 47, 361 Google Scholar