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Photospheric vortex flows as a cause for two-ribbon flares: A topological model

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Abstract

By using a topological model for the potential magnetic field above the photosphere, the appearance and development of the separator as a result of vortex plasma flows in the locality of the photospheric neutral line is considered. The possible relation of such vortex flows with a flare activity is revealed. The arrangement and shape of the flare ribbons in the chromosphere, the formation of X-ray intersecting loops, the early appearance of bright ‘knots’ on flare ribbon edges are naturally explained by the model provided a reconnecting current sheet arises along the separator in the coronal magnetic field of active regions as a result of the evolution of the magnetic field sources in the photosphere.

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Authors and Affiliations

  1. Lebedev Physical Institute of the Academy of Sciences, Leninsky prospect 53, 117924, Moscow, U.S.S.R.

    V. S. Gorbachev & B. V. Somov

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  1. V. S. Gorbachev
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  2. B. V. Somov
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Gorbachev, V.S., Somov, B.V. Photospheric vortex flows as a cause for two-ribbon flares: A topological model. Sol Phys 117, 77–88 (1988). https://doi.org/10.1007/BF00148574

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  • DOI: https://doi.org/10.1007/BF00148574

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