Three-dimensional zero-beta MHD simulation
of a solar eruption with a background solar
Hwanhee Lee1, Tetsuya Magara1,2, Jihye Kang1 and Satoshi Inoue3
2
1
School of Space Research, Kyung Hee University, Rep. of Korea
Department of Astronomy and Space Science, Kyung Hee University, Rep. of Korea
3
Max-Planck Institute for Solar System Research, Germany
lhhee@khu.ac.kr
We constructed a solar eruption model with a background solar wind during pre-eruption phase
and investigated the role of the solar wind in producing a solar eruption by performing threedimensional zero-beta magnetohydrodynamic (MHD) simulation. A nonlinear force-free field
(NLFFF) reconstructed from a photospheric magnetic field of a flux emergence simulation is used
as the initial condition of the zero-beta MHD simulation. To drive a solar wind in our model, an
upflow is imposed at the top boundary, which later causes a solar eruption. By analyzing magnetic
field configurations and the temporal development of the Lorentz force, we demonstrate that a solar
wind makes significant contributions in producing a solar eruption. This may lead to a
comprehensive understanding of the mechanism of solar eruptions.