Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001a%26at...20..433g&link_type=abstract
Astronomical and Astrophysical Transactions, vol. 20, Issue 3, pp.433-437
Astronomy and Astrophysics
Astronomy
Convection Theory, Sun, Sunspots
Scientific paper
The rising-flux-tube model of the formation of a bipolar sunspot group sharply disgrees with the normally observed features of the process. Meanwhile, these features can be successfully accounted for in terms of local magnetic-field amplification due to zellular convective motions of the solar plasma. Here, magnetoconvection in a plane horizontal fluid layer is simulated numberically magnetic field and a weak cellular flow are present. Convention can produce bipolar configurations of strongly amplified magnetic field. Indications are found for the nontrivial effect of flow freezing. The action of the convective mechanism may be controlled by the large-scale toroidal magnetic field of the Sun.
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