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Two-step solar filament eruptions View all abstracts by submitter

Boris Filippov   Submitted: 2017-12-25 00:35

Coronal mass ejections (CMEs) are closely related to eruptive filaments and usually are the continuation of the same eruptive process into the upper corona. There are failed filament eruptions when a filament decelerates and stops at some greater height in the corona. Sometimes the filament after several hours starts to rise again and develops into the successful eruption with a CME formation. We propose a simple model for the interpretation of such two-step eruptions in terms of equilibrium of a flux rope in a two-scale ambient magnetic field. The eruption is caused by a slow decrease of the holding magnetic field. The presence of two critical heights for the initiation of the flux-rope vertical instability allows the flux rope to stay after the first jump some time in a metastable equilibrium near the second critical height. If the decrease of the ambient field continues, the next eruption step follows.

Authors: B. Filippov
Projects: None

Publication Status: Accepted for publication in MNRAS
Last Modified: 2017-12-25 23:52
Go to main E-Print page  A quasi-periodic fast-propagating magnetosonic wave associated with the eruption of a magnetic flux rope  Regularized Biot-Savart Laws for Modeling Magnetic Flux Ropes  Edit Entry  Download Preprint  Delete Entry 

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