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Radial differential rotation vs. surface differential rotation: investigation based on dynamo models

Published online by Cambridge University Press:  01 November 2008

Heidi Korhonen  and
Detlef Elstner
Heidi Korhonen
Affiliation:
ESO, Karl-Schwarzschild-Str. 2, D-85748 Garching bei München, Germany
Detlef Elstner
Affiliation:
Astrophysical Institute Potsdam, An der Sternwarte 16, D-14482 Potsdam, Germany
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Abstract

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Differential rotation plays a crucial role in the alpha-omega dynamo, and thus also in creation of magnetic fields in stars with convective outer envelopes. Still, measuring the radial differential rotation on stars is impossible with the current techniques, and even the measurement of surface differential rotation is difficult. In this work we investigate the surface differential rotation obtained from dynamo models using similar techniques as are used on observations, and compare the results with the known radial differential rotation used when creating the dynamo model.

Keywords

Stars: rotation – stars: magnetic fields – stars: activity
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 4 , Symposium S259: Cosmic Magnetic Fields: From Planets, to Stars and Galaxies , November 2008 , pp. 425 - 426
Copyright
Copyright © International Astronomical Union 2009

References

Elstner, D. & Korhonen, H. 2005, AN 326, 278Google Scholar
Korhonen, H. & Elstner, D. 2005, A&A 440, 1161Google Scholar