Stellar Evolution with Rotation and Magnetic Fields IV: The Solar Rotation Profile

Details Stellar Evolution with Rotation and Magnetic Fields IV: The Solar Rotation Profile Stellar Evolution with Rotation and Magnetic Fields IV: The Solar Rotation Profile

2005-08-22

arxiv.org/abs/astro-ph/0508455v1

Astronomy and Astrophysics

Astrophysics

4 pages, 4 figures, accepted for publication in A&A Letters

Scientific paper

10.1051/0004-6361:200500156

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_sun, in good agreement with helioseismic measurements.

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