The dynamo layer in solar-type stars

Details The dynamo layer in solar-type stars The dynamo layer in solar-type stars

Apr 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005an....326..166o&link_type=abstract

Astronomische Nachrichten, Vol.326, Issue 3, p.166-169

Astronomy and Astrophysics

Astronomy

1

Stars: Magnetic Fields, Stars: Activity, Stars: Late-Type, Sun

Scientific paper

The role of the dynamo layer for dynamo action in solar-type stars is discussed. As a result of instabilities, magnetic flux is expelled from the dynamo layer into the convection zone above it. The resulting partial evacuation of the dynamo layer and amplification of the deep-seated toroidal magnetic field is investigated in an illustrative 3D numerical simulation. The simulation is performed with a finite-difference code that solves the anelastic MHD equations for a Cartesian geometry. It is found that the field strength in the dynamo layer is amplified by a factor of up to about 7.

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