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

Bibliographic Details
Title: 3D Radiative MHD Simulations of Starspots II: Large-scale Structure
Authors: Bhatia, Tanayveer Singh, Panja, Mayukh, Cameron, Robert, Solanki, Sami
Source: A&A 693, A264 (2025)
Publication Year: 2024
Collection: Astrophysics
Subject Terms: Astrophysics - Solar and Stellar Astrophysics
More Details: 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.
Comment: 8 pages, 6 figures, accepted for publication in A&A
Document Type: Working Paper
DOI: 10.1051/0004-6361/202452747
Access URL: http://arxiv.org/abs/2412.16921
Accession Number: edsarx.2412.16921
Database: arXiv
More Details
DOI:10.1051/0004-6361/202452747