Physics
Scientific paper
Sep 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987soph..108..265g&link_type=abstract
Solar Physics (ISSN 0038-0938), vol. 108, no. 2, 1987, p. 265-313. Research supported by CONACYT and DFG.
Physics
17
Magnetohydrodynamic Stability, Solar Atmosphere, Solar Prominences, Stellar Models, Two Dimensional Flow, Two Dimensional Models, Plasma Equilibrium, Solar Flares, Solar Oscillations
Scientific paper
Using the MHD energy principle of Bernstein et al. (1958) the author develops a formalism in order to analyze the stability properties of two-dimensional magnetostatic plasma equilibria. He applies this to four models of quiescent prominences, namely those of Menzel (1951), Dungey (1953), Kippenhahn and Schlüter (1957), and finally Lerche and Low (1980). It is found that, with the exception of the Kippenhahn and Schlüter model, all models become unstable. The instabilities that occur show simultaneously several features of well-known MHD-instabilities. However, an unequivocal assignment of the instabilities to specific instability prototypes is not possible. The formalism allows one to investigate not only more realistic prominence equilibria, but also arbitrary one- and two-dimensional static ideal MHD-equilibria.
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