Journal
ASTRONOMY & ASTROPHYSICS
Volume 440, Issue 1, Pages L9-L12Publisher
EDP SCIENCES S A
DOI: 10.1051/0004-6361:200500156
Keywords
stars : rotation; stars : magnetic fields; stars : evolution
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We examine the generation of a magnetic field in a solar-like star and its effects on the internal distribution of the angular velocity. We suggest that the evolution of a rotating star with magnetic fields leads to an equilibrium value of the differential rotation. This equilibrium is determined by the magnetic coupling, which favours a constant rotation profile, and meridional circulation which tends to build differential rotation. The global equilibrium stage is close to solid body rotation between about 0.7 and 0.2 R circle dot, in good agreement with helioseismic measurements.
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