Solar flares controlled by helicity conservation |
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| Authors: | Erast B Gliner Vladimir A Osherovich |
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| Institution: | (1) McDonnell Center for the Space Sciences and Department of Physics, Washington University, 63130 St. Louis, MO, U.S.A.;(2) NASA/Goddard Space Flight Center/Hughes STX, Southwest Station, NOAO, 85726 Tucson, AZ, U.S.A. |
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| Abstract: | The energy release in a class of solar flares is studied on the assumption that during burst events in highly conducting plasma the magnetic helicity of plasma is approximately conserved. The available energy release under a solar flare controlled by the helicity conservation is shown to be defined by the magnetic structure of the associated prominence. The approach throws light on some solar flare enigmas: the role of the associated prominences; the discontinuation of the reconnection of magnetic lines long before the complete reconnection of participated fields occurs; the existence of quiet prominences which, in spite of their usual optical appearance, do not initiate any flare events; the small energy release under a solar flare in comparison with the stockpile of magnetic energy in surrounding fields. The predicted scale of the energy release is in a fair agreement with observations.Presently guest at Stanford Linear Acceleraton Center, Stanford University, P.O. Box 4349, Stanford, CA 94305, U.S.A.Work done at the Space Environment Laboratory, NOAA, ERL, Boulder, CO 80303, U.S.A. |
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