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The role of non-axisymmetry of magnetic flux rope in constraining solar eruptions View all abstracts by submitter

Mingde Ding   Submitted: 2021-05-15 06:01

Whether a solar eruption is successful or failed depends on the competition between different components of the Lorentz force exerting on the flux rope that drives the eruption. The present models only consider the strapping force generated by the background magnetic field perpendicular to the flux rope and the tension force generated by the field along the flux rope. Using the observed magnetic field on the photosphere as a time-matching bottom boundary, we perform a data-driven magnetohydrodynamic simulation for the 30 January 2015 confined eruption and successfully reproduce the observed solar flare without a coronal mass ejection. Here we show a Lorentz force component, resulting from the radial magnetic field or the non-axisymmetry of the flux rope, which can essentially constrain the eruption. Our finding contributes to the solar eruption model and presents the necessity of considering the topological structure of a flux rope when studying its eruption behaviour.

Authors: Ze Zhong, Yang Guo, M. D. Ding
Projects: None

Publication Status: Published in Nature Communications
Last Modified: 2021-05-17 06:49
Go to main E-Print page  Thermal Trigger for Solar Flares II: Effect of the Guide Magnetic Field  Energy budget of plasma motions, heating, and electron acceleration in a three-loop solar flare  Edit Entry  Download Preprint  Delete Entry 

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