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Dynamo Processes Constrained by Solar and Stellar Observations

Published online by Cambridge University Press:  27 November 2018

Maria A. Weber Open the ORCID record for Maria A. Weber [Opens in a new window]
Maria A. Weber*
Affiliation:
Department of Astronomy and Astrophysics, University of Chicago Department of Astronomy, Adler Planetarium, Chicago, IL email: [email protected]
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Abstract

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Our understanding of stellar dynamos has largely been driven by the phenomena we have observed of our own Sun. Yet, as we amass longer-term datasets for an increasing number of stars, it is clear that there is a wide variety of stellar behavior. Here we briefly review observed trends that place key constraints on the fundamental dynamo operation of solar-type stars to fully convective M dwarfs, including: starspot and sunspot patterns, various magnetism-rotation correlations, and mean field flows such as differential rotation and meridional circulation. We also comment on the current insight that simulations of dynamo action and flux emergence lend to our working knowledge of stellar dynamo theory. While the growing landscape of both observations and simulations of stellar magnetic activity work in tandem to decipher dynamo action, there are still many puzzles that we have yet to fully understand.

Keywords

starsSunactivitymagnetic fieldsinteriorsobservationssimulations
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 13 , Symposium S340: Long-term Datasets for the Understanding of Solar and Stellar Magnetic Cycles , February 2018 , pp. 275 - 280
Copyright
Copyright © International Astronomical Union 2018 

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