Other
Scientific paper
Nov 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apj...286..666p&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 286, Nov. 15, 1984, p. 666-680.
Other
22
Free Convection, Heat Transfer, Stellar Cores, Stellar Interiors, Stellar Magnetic Fields, Thermonuclear Reactions, Boussinesq Approximation, Coriolis Effect, Forced Convection, Laplace Equation, Solar Magnetic Field, Transport Properties
Scientific paper
It is pointed out that magnetic fields in the radiative interior of a star cause a slight reduction in the gas pressure, by a fraction of the order of B2/8πp. The effect is a proportionate reduction in the opacity and an increase in the effective heat transport coefficient, so that magnetic inhomogeneities cast thermal shadows in the general outflow of radiant energy. The shadows involve horizontal temperature gradients, forcing convective circulation in the otherwise stably stratified radiative zone. The associated vertical mixing may have important consequences for the thermonuclear burning of 7Li in the outer envelope of the star.
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