On the mechanism of formation of loop prominences |
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| Authors: | Bibhas R De |
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| Institution: | (1) Dept. of Applied Physics and Information Science, University of California, 92037 San Diego, La Jolla, Calif., U.S.A. |
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| Abstract: | A mechanism is suggested for the formation of loop-type prominences in solar-active regions following flare events. The mechanism is based on the already existing idea of compression of a coronal plasma element resulting in enhanced radiation and consequent cooling of the element. A model is suggested for such a compression based on the concept of a contracting, force-free filamentary structure. If the current in a filament increases with time, then there is a radial contraction of the filament. Since the coronal plasma is frozen into the magnetic field lines of the filament, a contraction of the filament causes a compression of the filamentary plasma. This model of compression is shown to be in approximate qualitative and quantitative agreement with observations. |
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