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  • does the region of flare-energy release work as a vacuum-cleaner?

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    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1392/07/24
    • تاریخ انتشار در تی پی بین: 1392/07/24
    • تعداد بازدید: 932
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     we aim to explore the unusual flare event which took place in the solar atmosphere on september 22, 2011 and propose its theoretical interpretation. we analyze the process of energy release in the twisted magnetic flux-rope associated with the event, assuming the excitation of anomalous resistivity of turbulent plasma in the rope, and solve numerically nonlinear two-dimensional (2d) magnetohydrodynamic (mhd) equations. the analytical approach to the problem of flare-energy release show that the conditions of excitation of anomalous resistivity can be satisfied in the twisted magnetic flux-rope whose parameters fits well the sdo observational findings. one of the most remarkable properties of the flare phenomenon under the present consideration was the permanent sucking of the coronal/chromospheric gas from the very remote points to the flare filament, i.e. into the low-lying hot region of the flare energy release. this unusual phenomenon has been simulated by numerical methods in terms of ideal mhd. the numerical results reveal that siphon back-flow exhibits characteristic spatial signatures which mimic the observational findings. the flare-energy release region, as a part of strongly twisted magnetic flux-rope, is able to work as a vacuum-cleaner.

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