Physics
Scientific paper
May 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011spd....42.2220l&link_type=abstract
American Astronomical Society, SPD meeting #42, #22.20; Bulletin of the American Astronomical Society, Vol. 43, 2011
Physics
Scientific paper
It has been a long-standing question in solar physics how magnetic field structure changes with eruptive events (e.g., flares and coronal mass ejections). In an effort to understand the physics behind the phenomena, we present the eruption-associated changes in magnetic inclination angle, the horizontal component of magnetic field vectors, the Lorentz force, the magnetic shear angle and the footpoint motion of the flare. The study is mainly based on the three-dimensional MHD simulation of the evolution of the magnetic field in the corona by Yuhong Fan, and compared with some observational data. The results suggest that the field lines at the flaring magnetic polarity inversion line become more horizontal near the surface, that is in agreement with the prediction of Hudson et al. In addition, the footpoints show the de-shearing and diverging motion following the converging motion during the flare.
Fan Ying
Jing Ji-liang
Li Yixuan
Wang Hai-Hong
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