천문학회보 (The Bulletin of The Korean Astronomical Society)
- 제40권1호
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- Pages.63.2-63.2
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- 2015
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- 1226-2692(pISSN)
Three-dimensional evolution of a solar magnetic field that emerges, organizes and produces a flare and flare-associated eruptions of a flux rope and plasmoid
초록
Solar flare is one of the energetic phenomena observed on the Sun, and it is often accompanied with eruptions such as global-scale eruption of a flux rope (filament/prominence eruption) and small-scale eruption of a plasmoid. A flare itself is a dissipative phenomenon where accumulated electric current representing free magnetic energy is dissipated quickly at a special location called a current sheet formed in a generally highly conductive solar corona. Previous studies have demonstrated how a solar magnetic field placed on the Sun forms a current sheet when magnetic shear is added to the field. Our study is focused on a self-consistent process of how a subsurface magnetic field emerges into the solar atmosphere and forms a current sheet in the corona. This study also gives light to a relation among a flare and two types of flare-associated eruptions; flux-rope eruption and plasmoid eruption.
키워드