Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988a%26a...194..257k&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 194, no. 1-2, April 1988, p. 257-267.
Astronomy and Astrophysics
Astrophysics
77
Flux Density, Magnetic Flux, Magnetohydrodynamics, Photosphere, Solar Magnetic Field, Boundary Layer Plasmas, Fourier Transformation, Thermodynamic Equilibrium
Scientific paper
The paper presents the results of 2D-MHD simulations of small magnetic flux concentrations in the solar photosphere. Consideration is given to the effects of extended boundary layers (i.e., a smooth transition to the nonmagnetic environment and inhibition of convective energy transport in the flux concentration surroundings). A comparison is made with observational data, and it is found that the boundary layer is likely to be thin compared to the diameter of a magnetic element while convective transport does not seem to be strongly inhibited outside the flux concentration. It is found that all models of magnetic elements are slightly unstable against fluting in the absence of a surrounding whirl flow.
Knoelker Michael
Schuessler Manfred
Weisshaar E.
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