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The role of non-axisymmetry of magnetic flux rope in constraining solar eruptions

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  • Ze Zhong

    (Nanjing University
    Key Laboratory for Modern Astronomy and Astrophysics (Nanjing University), Ministry of Education)

  • Yang Guo

    (Nanjing University
    Key Laboratory for Modern Astronomy and Astrophysics (Nanjing University), Ministry of Education)

  • M. D. Ding

    (Nanjing University
    Key Laboratory for Modern Astronomy and Astrophysics (Nanjing University), Ministry of Education)

Abstract

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.

Suggested Citation

  • Ze Zhong & Yang Guo & M. D. Ding, 2021. "The role of non-axisymmetry of magnetic flux rope in constraining solar eruptions," Nature Communications, Nature, vol. 12(1), pages 1-12, December.
    • Handle: RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-23037-8
    DOI: 10.1038/s41467-021-23037-8
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