Hydromagnetic buoyancy force in the solar atmosphere

Details Hydromagnetic buoyancy force in the solar atmosphere Hydromagnetic buoyancy force in the solar atmosphere

Jan 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985soph...95...83y&link_type=abstract

Solar Physics (ISSN 0038-0938), vol. 95, Jan. 1985, p. 83-97. NOAA-supported research.

Physics

10

Buoyancy, Magnetohydrodynamics, Solar Atmosphere, Inhomogeneity, Lines Of Force, Magnetic Field Configurations, Solar Flux, Vertical Motion

Scientific paper

A quantitative definition of the hydromagnetic buoyancy force in the solar atmosphere is presented, on the basis of a numerical analysis of the hydromagnetic characteristics of a circular flux tube. It is shown that the peripheral inhomogeneity of ambient hydromagnetic pressure in the solar atmosphere can lead to hydromagnetic buoyancy in the presence of an extraneous body. The results of the flux tube analyses showed that the strength of the force is often equal to or greater than the gravitational force of the solar atmosphere, and may be responsible for the stationary equilibria of quiescent solar prominences, as well as the outward motions of coronal transients. A diagram is presented in order to describe the field lines in the large-scale solar magnetic field in the presence of hydromagnetic buoyancy.

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