Longitudinally Modulated Dynamo Action in Simulated M-dwarf Stars

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Abstract

M-dwarf stars are well known for the intense magnetic activity that many of them exhibit. In cool stars with near-surface convection zones, this magnetic activity is thought to be driven largely by the interplay of convection and the large-scale differential rotation and circulations it establishes. The highly nonlinear nature of these flows yields a fascinatingly sensitive and diverse parameter space, with a wide range of possible dynamics. We report here on a set of three global MHD simulations of rapidly rotating M2 (0.4 M ⊙) stars.

Year of Publication
2022
Date Published
2022-03
Journal Title
The Astrophysical Journal
Volume
928
Issue
1
Start Page or Article ID
51
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