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Study of starspots in fully convective stars using three dimensional MHD simulations

Published online by Cambridge University Press:  27 November 2018

Arnab Basak Open the ORCID record for Arnab Basak [Opens in a new window]  and
Dibyendu Nandy
Arnab Basak
Affiliation:
Center of Excellence in Space Sciences India, Indian Institute of Science Education and Research Kolkata, Mohanpur - 741246, India email: [email protected]
Dibyendu Nandy
Affiliation:
Center of Excellence in Space Sciences India, Indian Institute of Science Education and Research Kolkata, Mohanpur - 741246, India Department of Physical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur - 741246, India [email protected]
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Abstract

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Concentrated magnetic structures such as sunspots and starspots play a fundamental role in driving solar and stellar activity. However, as opposed to the sun, observations as well as numerical simulations have shown that stellar spots are usually formed as high-latitude patches extended over wide areas. Using a fully spectral magnetohydrodynamic (MHD) code, we simulate polar starspots produced by self-consistent dynamo action in rapidly rotating convective shells. We carry out high resolution simulations and investigate various properties related to stellar dynamics which lead to starspot formation.

Keywords

magnetic fieldsMHDstars: spotsstellar dynamics
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. 303 - 304
Copyright
Copyright © International Astronomical Union 2018 

References

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