The stability of two classes of solar quiescent prominences |
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Authors: | P De Bruyne A W Hood |
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Institution: | (1) Department of Mathematical and Computational Sciences, University of St. Andrews, KY16 9SS Fife, Scotland;(2) Present address: LABORELEC, DMI, B-1630 Linkebeek, Belgium |
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Abstract: | The stability properties of two prominence models are investigated by considering bounds on the marginal stability conditions. It is shown that Low's (1981) model is unstable to localized disturbances and the Hood and Anzer (1990) model is only stable for sufficiently low prominences. The latter result may be modified by including magnetic shear. It is shown that magnetic shear stabilizes coronal loops against Rayleigh-Taylor instabilities and may help to stabilize prominence models as well. |
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