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Magnetohydrodynamic study on the effect of the gravity stratification on flux rope ejections

Published online by Cambridge University Press:  06 January 2014

Paolo Pagano ,
Duncan H. Mackay  and
Stefaan Poedts
Paolo Pagano
Affiliation:
School of Mathematics and Statistics, University of St Andrews, North Haugh, KY16 9SS, St Andrews, Scotland email: [email protected]
Duncan H. Mackay
Affiliation:
School of Mathematics and Statistics, University of St Andrews, North Haugh, KY16 9SS, St Andrews, Scotland email: [email protected]
Stefaan Poedts
Affiliation:
Centre for mathematical Plasma-Astrophysics, K. U. Leuven, Celestijnenlaan 200B, 3001, Leuven, Belgium
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Abstract

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Coronal Mass Ejections (CMEs) are one of the most violent phenomena found on the Sun. One model to explain their occurrence is the flux rope ejection model where these magnetic structures firt form in the solar corona then are ejected to produce a CME. We run simulations coupling two models. The Global Non-Linear Force-Free Field (GNLFFF) evolution model to follow the quasi-static formation of a flux rope and MHD simulations for the production of a CME through the loss of equilibrium and ejection of this flux rope in presence of solar gravity and density stratification. Our realistic multi-beta simulations describe the CME following the flux rope ejection and highlight the decisive role played by the gravity stratification on the CME propagation speed.

Keywords

SunCMESolar CoronaMHD
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 8 , Symposium S300: Nature of Prominences and their role in Space Weather , June 2013 , pp. 197 - 200
Copyright
Copyright © International Astronomical Union 2013 

References

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