Modelling dynamos in rapidly rotating late-type stars

Details Modelling dynamos in rapidly rotating late-type stars Modelling dynamos in rapidly rotating late-type stars

Jun 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003mnras.342l..15b&link_type=abstract

Monthly Notice of the Royal Astronomical Society, Volume 342, Issue 1, pp. L15-L19.

Astronomy and Astrophysics

Astronomy

14

Magnetic Fields, Mhd, Stars: Late-Type, Stars: Rotation, Stars: Spots

Scientific paper

There is growing observational evidence that magnetic activity in rapidly rotating late-type stars is very different from that found in the Sun. In particular, polar spots and other high-latitude features are often observed on rapid rotators. In this Letter, I propose a plausible rotation profile for these rapidly rotating stars and this is then built into a non-linear mean-field dynamo model. It is shown that this model naturally gives rise to polar magnetic features and the relevance of these results to rapidly rotating late-type stars is discussed.

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