Numerical experiments on dynamic evolution of a CME-flare current sheet

ABSTRACT In this paper, we performed magnetohydrodynamics numerical experiments to look into the dynamic behaviour of current sheet (CS) between coronal mass ejection (CME) and associated solar flare, especially CS oscillation plasmoid motions in conditions. During evolution, disrupting magnetic configuration becomes asymmetric first buffer region at bottom CME bubble. The Rayleigh−Taylor instability deflected motion plasma driven by termination shock bubble cause oscillate around y-axis. local propagates downwards through CS, prompting an overall oscillation. As grows, period longer, increasing from about 30 s 16 min. Meanwhile, there is another separated with a 0.25 1.5 min cusp flare generated velocity shearing. tearing mode yields formations plasmoids inside CS. all observed experiment accelerate, which implies that large-scale CME/flare itself true eruptive event filled diffusion according standard theory reconnection.