Near-Polar Starspots and Polar Dynamo Waves

Details Near-Polar Starspots and Polar Dynamo Waves Near-Polar Starspots and Polar Dynamo Waves

Jun 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004arep...48..522n&link_type=abstract

Astronomy Reports, Volume 48, Issue 6, p.522-524

Astronomy and Astrophysics

Astronomy

1

Scientific paper

A possible mechanism for the formation of near-polar magnetic spots on some stars with convective envelopes is proposed. The mechanism is based on the idea that the maximum of the dynamo waves that are excited in thin convective shells by the dynamo mechanism is shifted appreciably from the maximum of the magnetic-field sources in the direction of motion of the dynamo wave. If there is no region of super-rotation near the equator for some reason (as a consequence of disruption due to tidal interaction with a companion in a binary system, for example) and the wave of stellar activity propagates toward the poles rather than toward the equator, this maximum will be in the near-polar regions.

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