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Coronal Magnetic Flux Ropes in Quadrupolar Magnetic Fields

Published online by Cambridge University Press:  03 June 2005

Yingzhi Zhang ,
Youqiu Hu  and
Jingxiu Wang
Yingzhi Zhang
Affiliation:
National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, Chinaemail:[email protected]
Youqiu Hu
Affiliation:
School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026, China
Jingxiu Wang
Affiliation:
National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, Chinaemail:[email protected]
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Abstract

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Using a 2.5-D, time-dependent ideal MHD model in spherical coordinates, we carry out a numerical study of the equilibrium properties of coronal magnetic flux ropes in a quadrupolar background magnetic field. For such a flux rope system, a catastrophic occurs: the flux rope is detached from the photosphere and jumps to a finite altitude with a vertical current sheet below. There is a transversal current sheet formed above the rope, and the whole system stays in quasi-equilibrium. We argue that the additional Lorentz force provided by the transversal current sheet on the flux rope plays an important role in keeping the system in quasi-equilibrium in the corona.To search for other articles by the author(s) go to: http://adsabs.harvard.edu/abstract_service.html

Keywords

Sun: coronamagnetic fieldsMHD
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2004 , Issue IAUS226 , September 2004 , pp. 281 - 282
Copyright
© 2005 International Astronomical Union