Dynamical Model of Prominence Formation and Oscillation(I)

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  • タイヨウ コウエン ノ ケイセイ オヨビ シンドウ ノ ドウテキ モデル エイ
  • 太陽紅炎の形成及び振動の動的モデル

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We investigate a dynamical model of prominence formation in a current sheet at the boundary between two regions of opposite magnetic polarity. Coupled nonlinear equations describing the temporal compression and condensation of plasma in the current sheet are set up as a natural extension of the usual equations for current sheet collapse (Imshennik and Syrovatskii, 1967). It is shown that under certain conditions the current sheet undergoes a nonlinear oscillation during the compression. The thermal instability with cooling is driven by a density enhancement produced during the current sheet formation stage.

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