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The process of the filament formation and eruption triggered by the emerging flux

The process of the filament formation and eruption triggered by the emerging flux. S.Notoya T.Yokoyama. Plane: temperature. Arrows:direction of the magnetic field. 6*10^4 (km). corona. convection zone and chromospheres. Corona arcade field.

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The process of the filament formation and eruption triggered by the emerging flux

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  1. The process of the filament formation anderuption triggered by the emerging flux S.Notoya T.Yokoyama

  2. Plane: temperature Arrows:direction of the magnetic field 6*10^4 (km) corona convection zone and chromospheres Corona arcade field Twisted flux tube embedded in the convection zone

  3. 10^5 km Arcade field is highly sheared to the neutral line of it Perturbation is added to the center of the flux tube to initiate the Parker instability

  4. emerging process Upward motion Down stream Yellow: emerging flux Upward motion induced by the Parker instability Expand in the corona

  5. Movie of the simulation Green:unreconnected field lines of the arcade Orange:reconnected or will be reconnected field lines of the arcade Blue:emerging flux

  6. Deformation of the arcade Green:unreconnected field lines of the arcade Orange:reconnected or will be reconnected field lines of the arcade Blue:emerging flux Gold:current sheet within the arcade Current sheet is produced inside the arcade because the footpoints of it approach each other

  7. Ejection of the produced filament Reconnected field lines pushing up Unreconnected field lines Current sheets are dissipated through the reconnection

  8. Manga

  9. Similarity with the observation The cold plasmas move up into the corona with the field lines

  10. Arcade energy Magnetic（left axis） Kinetic (right axis) Green: Magnetic energy is stored in the arcade Height(left axis） Blue:stored Magnetic energy is released Velocity(right axis) （5200sec） （2080sec） Produced filament is accelerated to 30% of the corona Alfven velocity at 9*10^4km （9*10^4 km） （3120sec） （5200sec） Magnetic energy is converted to the kinetic energy in the eruption process

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