The Bulletin of The Korean Astronomical Society (천문학회보)
- Volume 41 Issue 1
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- Pages.46.3-47
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- 2016
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- 1226-2692(pISSN)
Simulation of a solar eruption with a background solar wind
- Lee, Hwanhee (School of Space Research, Kyung Hee University) ;
- Magara, Tetsuya (School of Space Research, Kyung Hee University) ;
- Kang, Jihye (School of Space Research, Kyung Hee University) ;
- Inoue, Satoshi (Max-Planck Institute for Solar System Research)
- Published : 2016.04.12
Abstract
We construct a solar eruption model with a background solar wind by performing three-dimensional zero-beta magnetohydrodynamic (MHD) simulation. The initial configuration of a magnetic field is given by nonlinear force-free field (NLFFF) reconstruction applied to a flux emergence simulation. The background solar wind is driven by upflows imposed at the top boundary. We analyzed the temporal development of the Lorentz force at the flux tube axis. Based on the results, we demonstrate that a solar eruption is caused by the imbalance between magnetic pressure gradient force and magnetic tension force. We conclude that this imbalance is produced by a weak but continuously existing solar wind above an active region.
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