Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992a%26a...259..585t&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 259, no. 2, p. 585-594.
Astronomy and Astrophysics
Astrophysics
5
Flow Velocity, Gravitational Fields, Magnetohydrodynamic Flow, Solar Gravitation, Solar Prominences, Doppler Effect, Magnetic Flux, Solar Atmosphere
Scientific paper
A class of analytical MHD equilibria in a uniform gravitational field with flows along the magnetic lines is presented. The fieldlines have prominence-like valleys and arcade-type summits where the fields are horizontal. At the valleys the density is maximum and the flow speed subsonic and sub-Alfvenic, while at the summits the density is minimum, and the flow speed supersonic and super-Alfvenic. These solutions may be regarded as an extension of the familiar Kippenhahn-Schlueter model for a quiescence solar prominence and models for solar magnetic arcades, by including flows along the magnetic field lines. The periodic fine-scale of the magnetic field lines and streamlines is similar to the observed fine-scale fibril structure of solar prominences.
Surlantzis G.
Tsinganos Kanaris
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