Quasistatic evolution of preflare equilibria

Details Quasistatic evolution of preflare equilibria Quasistatic evolution of preflare equilibria

Nov 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981plap.rept..297z&link_type=abstract

In ESA Plasma Astrophys. p 297-400 (SEE N82-20030 10-88)

Other

Magnetohydrostatics, Nonequilibrium Conditions, Plasma Equilibrium, Solar Flares, Initiation, Magnetic Flux, Magnetohydrodynamic Stability, Photosphere, Static Stability

Scientific paper

A special type of solar preflare equilibria, the newly-emerging-Flux model, is considered. This model describes the quasistatic evolution occurring before the onset of a solar eruptive process (e.g., flare) as the formation of a new magnetic structure within an otherwise stationary equilibrium. The model is analyzed quantitatively in the framework of two-dimensional magnetohydrostatic theory. It is shown that the equilibrium ceases to exist when the newly emerging flux exceeds a critical field strength; this point is regarded as the onset of an eruptive process. The equilibrium and the onset criterion are discussed quantitatively.

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