3D Radiative MHD Simulations of Starspots II: Large-scale Structure

Kavli Affiliate: Robert Cameron

| First 5 Authors: Tanayveer Singh Bhatia, Mayukh Panja, Robert Cameron, Sami Solanki,

| Summary:

We compute realistic 3D radiative MHD near-surface models of starspots with
substantial penumbrae on cool main-sequence stars using the MURaM simulation
code. This work is an improvement on the the previous starspot models in a slab
geometry. The umbra, penumbra and the quiet star for all starspots are
distinct, not only in intensity and temperature, but also in thermodynamic and
velocity structure. These models represent a significant step towards modelling
contribution of starspots to stellar lightcurves.

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