The equilibrium of coronal flux tubes under toroidal forces

Details The equilibrium of coronal flux tubes under toroidal forces The equilibrium of coronal flux tubes under toroidal forces

Feb 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992ap%26ss.188..279j&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 188, no. 2, Feb. 1992, p. 279-288.

Physics

Coronal Loops, Magnetic Field Configurations, Solar Magnetic Field, Solar Physics, Buoyancy, Gravitational Effects, Toroids

Scientific paper

The properties of slender isolated flux tubes, taking into account curvature effects, were investigated by Parker (1975, 1979) and Spruit (1981), and many studies have been made concerning the equilibrium of slender flux tubes in the solar corona. In this paper a different approach considering the coronal loop as a part of a circular torus and studying the position of its top when the loop is in equilibrium under toroidal forces is used. Toroidal forces were considered by Shafranov (1966) for toroidal pinches and the equilibrium can be studied for different values of the toroidal current intensity and external magnetic field. The results show that it is possible to have a coronal flux tube in equilibrium without considering gravity and external magnetic field. Furthermore, the total twist of the flux tube and its variation with the toroidal intensity has been studied.

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