Dynamic regimes and the possibility of the origin of microflares in a prominence

Details Dynamic regimes and the possibility of the origin of microflares in a prominence Dynamic regimes and the possibility of the origin of microflares in a prominence

Feb 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992azh....69..159z&link_type=abstract

Astronomicheskii Zhurnal (ISSN 0004-6299), vol. 69, no. 1, Jan.-Feb. 1992, p. 159-172. In Russian.

Astronomy and Astrophysics

Astronomy

1

Plasma Dynamics, Plasma Equilibrium, Solar Flares, Solar Prominences, Dynamic Models, Magnetohydrostatics, Solar Magnetic Field

Scientific paper

A dynamical model of a solar prominence which takes plasma motion in the form of a cumulative flux into account was developed on the basis of solutions of the Kippenhahn-Schlueter (KS) magnetohydrostatic model. The fact that the prominence plasma is partially ionized is instrumental to the solution of this problem. The equilibrium state described by KS solutions becomes unstable, and various dynamic regimes of plasma compression as well as monotonic or quasi-periodic expansion of plasma can exist in the prominence, depending on the initial conditions. The energetics of this model of the prominence is investigated. Due to the dissipation caused by ion-neutral collisions in nonsteady conditions, heating of the prominence greatly increases in comparison with the usual Joule heating. The estimated relationship between the rate and degree of compression, when the prominence heating exceeds radiation losses, providing conditions for the development of the flare process, is obtained.

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