Astronomy and Astrophysics – Astrophysics
Scientific paper
Nov 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985apj...298..181f&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 298, Nov. 1, 1985, p. 181-189. Research supported by the Ministero della Pu
Astronomy and Astrophysics
Astrophysics
21
Atmospheric Models, Magnetic Flux, Magnetohydrodynamics, Radiative Transfer, Stellar Atmospheres, Geometry, Magnetic Fields, Temperature Dependence
Scientific paper
A model atmosphere within a thin magnetic flux tube that is embedded in an arbitrarily stratified medium is presently constructed by solving the radiative transfer equation in the two-stream approximation for gray opacity, under the assumption that the magnetic field is sufficiently strong to warrant the neglect of both thermal conduction and convective diffusion; energy inside the flux tube therefore being transported solely by radiation. The structure of the internal atmosphere is determined on the basis of the hydrostatic and radiative equilibrium conditions of the tube embedded in an external atmosphere. The gas temperature along the axis of the tube is computed, and the geometry of the flux tube is determined on the basis of magnetic flux conservation and total pressure equilibrium.
Bodo Gianluigi
Ferrari Aldo
Kalkofen Wolfgang
Massaglia Silvano
Rosner Robert
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