Kinetics of the post-eruptive phase of an eruptive prominence on 8 May, 1979
Abstract
The kinetic pattern of the post-eruptive phase of the quiescent prominence which erupted on 8 May, 1979, was studied. The eruption of the helically-twisted polar prominence originated in the southern leg of the huge magnetic system (HMS) that later produces a coronal mass ejection (CME). The kinetic evolution of the post-eruptive process was estimated by time profiles of the heights of the two main flux ropes (FRs), composing the body of the eruptive prominence (EP) and the horizontal expansion between the main FRs feet. The inflow velocity of the prominence plasma back to the chromosphere increased with constant acceleration of 76 m/s^{2} and it reached a value of up to 200 km/s. The horizontal expansion between the main FRs feet of the EP increased with an average constant velocity of 12 km/s in first order approximation, but in fact it has changed non-linearly. The obtained results were discussed as indicative ones for the kinetics and evolution of the magnetic field at the bottom of the erupting HMS.
- Publication:
-
Bulgarian Astronomical Journal
- Pub Date:
- 2010
- Bibcode:
- 2010BlgAJ..13...69D
- Keywords:
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- Prominences;
- Eruptions;
- Coronal Mass Ejections;
- Magnetic fields