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arXiv · 1309.2207

Asteroseismic Signatures of Magnetic Activity Variations in Solar-type Stars

Travis S. Metcalfe
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Abstract

Observations of magnetic activity cycles in other stars provide a broader context for our understanding of the 11-year sunspot cycle. The discovery of short activity cycles in a few stars, and the recognition of analogous variability in the Sun, suggest that there may be two distinct dynamos operating in different regions of the interior. Consequently, there is a natural link between studies of magnetic activity and asteroseismology, which can characterize some of the internal properties that are relevant to dynamos. I provide a brief historical overview of the connection between these two fields (including prescient work by Wojtek Dziembowski in 2007), and I highlight some exciting results that are beginning to emerge from the Kepler mission.

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Travis S. Metcalfe. 2013-09-09. Asteroseismic Signatures of Magnetic Activity Variations in Solar-type Stars. https://doi.org/10.1017/s1743921313014348

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