Electromagnetic up-pushing force as a possible mechanism for the equilibrium of prominences

Details Electromagnetic up-pushing force as a possible mechanism for the equilibrium of prominences Electromagnetic up-pushing force as a possible mechanism for the equilibrium of prominences

Jan 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993astl...19...27l&link_type=abstract

Astronomy Letters, Vol. 19, p. 27-30; Pis'ma v Astronomicheskii Zhurnal (ISSN 0320-0108), vol. 19, no. 1, p. 65-72. In Russian.

Astronomy and Astrophysics

Astronomy

1

Plasma-Electromagnetic Interaction, Solar Corona, Solar Prominences, Electrical Resistance, Solar Gravitation, Solar Magnetic Field

Scientific paper

The force of electromagnetic up-pushing, which is different from the well-known magnetic buoyancy force introduced by Parker (1955), acts on a body immersed into a conducting fluid with electric and magnetic fields. Dimensional considerations and some exact solutions of the MHD problem allow us to determine this force in the case of the large magnetic Reynolds number; that is important for astrophysical applications. The electromagnetic up-pushing is capable of efficiently balancing the gravity force in solar prominences and generating fast vortex flows in their vicinity. The possible observational tests of the effect are discussed.

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