A coupled model of magnetic flux generation and transport in stars

Details A coupled model of magnetic flux generation and transport in stars A coupled model of magnetic flux generation and transport in stars

2011-11-10

arxiv.org/abs/1111.2453v1

Astron. Nachr., 328, 1111-1113 (2007)

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

Astron. Nachr. /AN, 328, 1111-1113 (2007). A newer, more extended paper related to this study can be reached here: http://ar

Scientific paper

10.1002/asna.200710865

We present a combined model for magnetic field generation and transport in cool stars with outer convection zones. The mean toroidal magnetic field, which is generated by a cyclic thin-layer alpha-omega dynamo at the bottom of the convection zone is taken to determine the emergence probability of magnetic flux tubes in the photosphere. Following the nonlinear rise of the unstable thin flux tubes, emergence latitudes and tilt angles of bipolar magnetic regions are determined. These quantities are put into a surface flux transport model, which simulates the surface evolution of magnetic flux under the effects of large-scale flows and turbulent diffusion. First results are discussed for the case of the Sun and for more rapidly rotating solar-type stars.

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