Invariant structures of magnetic flux tubes

Details Invariant structures of magnetic flux tubes Invariant structures of magnetic flux tubes

Apr 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982afz....18..300s&link_type=abstract

(Astrofizika, vol. 18, Apr.-June 1982, p. 300-310.) Astrophysics, vol. 18, no. 2, Oct. 1982, p. 185-192. Translation.

Astronomy and Astrophysics

Astrophysics

1

Force-Free Magnetic Fields, Magnetic Field Configurations, Magnetic Flux, Solar Magnetic Field, Solar Flares

Scientific paper

The basic properties of a screened magnetic flux tube possessing a finite radius of curvature are discussed in order to complement the findings of Parker (1974, 1976) and improve their accuracy. Conditions of equilibrium, twisting equilibrium, and twisting oscillations are discussed, showing that a twisted magnetic loop or arch is capable of executing elastic oscillations about an equilibrium state. This property can in particular be used in the theory of solar flares. Invariant structures of a force-free magnetic tube are analyzed, showing that invariant structures of the field preserve their form when the geometrical parameters of the flux tube are changed. In a quasi-equilibrium transition of the tube from one state to another the length and pitch of the tube spiral change in proportion to the radius of its cross section.

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