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Non-ideal MHD Properties of Photospheric Flux Tubes

Published online by Cambridge University Press:  13 May 2016

J. Kleimann  and
G. Hornig
J. Kleimann
Affiliation:
Theoretische Physik IV, Ruhr-Universität, 44780 Bochum, Germany
G. Hornig
Affiliation:
Theoretische Physik IV, Ruhr-Universität, 44780 Bochum, Germany

Abstract

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Magnetic flux tubes reaching from the solar convection zone into the chromosphere have to pass through the relatively cool, and therefore highly non-ideal (i.e. resistive) photospheric plasma. It is shown that stationary MHD equilibria of magnetic flux tubes which pass through this region require an inflow of plasma into the tube and a deviation from isorotation along the tube axis. Although for characteristic parameters of thick flux tubes the effect is negligible, a scaling law indicates its importance for small-scale structures. The relevance of this inflow for the expansion of flux tubes above the photosphere is discussed.

Type
Session V: Coronal Heating and Solar Wind Acceleration
Information
Symposium - International Astronomical Union , Volume 203: Recent Insights into the Physics of the Sun and Heliosphere: Highlights from Soho and Other Space Missions , 2001 , pp. 508 - 510
Copyright
Copyright © Astronomical Society of the Pacific 2001 

References

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