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Dynamic Model of Magnetic Flux Ropes

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Abstract—

Developing ideas of the paper Zaitsev and Stepanov (2018) with regards to activation of a current-carrying filament with an increase in electric current, in which the Ampère force is opposed by gravity and medium viscosity, we take into account the influence of an external magnetic field. It is shown that, depending on mutual directions of the external magnetic field and electric current in the flux rope, the additional Ampère force can lead to the deceleration or to additional eruption of the flux rope. A phase diagram describing the peculiarities of flux rope dynamics has been constructed. The maximum height and velocity of the flare loop are determined for the event on March 30, 2001.

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Funding

This work was supported by the Russian Foundation for Basic Research, project nos. 17-02-00091_A (Sections I and V), and 18-02-00856_A (Section III), the Program of Basic Research of Russian Academy of Sciences no. 12 ‘Problems of Origin and Evolution of the Universe’ (Section II), and by the State Assignment no. 0041-2019-0019 (Section IV) and 0035-2019-0002 (Setction V).

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Authors and Affiliations

  1. Institute of Applied Physics, 603600, Nizhny Novgorod, Russia

    V. V. Zaitsev

  2. Central Astronomical Observatory at Pulkovo, 196140, St. Petersburg, Russia

    A. V. Stepanov & A. V. Melnikov

  3. Ioffe Institute, Russian Academy of Sciences, 194021, St. Petersburg, Russia

    A. V. Stepanov

Authors
  1. V. V. Zaitsev
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  2. A. V. Stepanov
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  3. A. V. Melnikov
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Corresponding authors

Correspondence to V. V. Zaitsev or A. V. Stepanov.

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The authors declare that they have no conflicts of interest.

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Zaitsev, V.V., Stepanov, A.V. & Melnikov, A.V. Dynamic Model of Magnetic Flux Ropes. Geomagn. Aeron. 59, 806–809 (2019). https://doi.org/10.1134/S0016793219070272

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  • DOI: https://doi.org/10.1134/S0016793219070272

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