The stability of a magnetic flux element in a horizontally stratified compressible plasma

Details The stability of a magnetic flux element in a horizontally stratified compressible plasma The stability of a magnetic flux element in a horizontally stratified compressible plasma

Nov 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977soph...55...35w&link_type=abstract

Solar Physics, vol. 55, Nov. 1977, p. 35-45.

Physics

Plasma Physics

3

Compressible Fluids, Magnetic Field Configurations, Magnetic Flux, Magnetohydrodynamic Stability, Plasma Physics, Solar Magnetic Field, Adiabatic Conditions, Solar Physics, Stellar Models, Sunspots

Scientific paper

The stability of a thin magnetic flux tube in a static, compressible, gravitationally stratified plasma is studied; the investigation is relevant to the problem of the magnetic configuration of a sunspot. Non-force-free solutions for an axisymmetric flux tube permit calculations of the total potential energy of such a tube and its surroundings. The energy balance for flux tube subdivision under adiabatic and nonadiabatic conditions is then analyzed. The model calculations indicate that cooling of a magnetic feature may decrease its tendency to subdivide and form smaller flux tubes.

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