恒星黑子的三维辐射MHD模拟

IF 5.8 2区物理与天体物理 Q1 ASTRONOMY & ASTROPHYSICS

Astronomy & Astrophysics Pub Date : 2025-01-23 DOI:10.1051/0004-6361/202452747

Tanayveer Singh Bhatia, Mayukh Panja, Robert H. Cameron, Sami K. Solanki

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引用次数: 0

摘要

利用MURaM模拟程序计算了冷主序星上具有大量半影的星黑子的真实三维辐射磁流体动力学（MHD）近地表模型。这项工作是对以前的平板几何恒星黑子模型的改进。所有恒星黑子的本影、半影和静星不仅在强度和温度上是不同的，而且在热力学和速度结构上也是不同的。这些模型在模拟恒星黑子对恒星光曲线的贡献方面迈出了重要的一步。

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3D radiative MHD simulations of starspots

We computed realistic 3D radiative magnetohydrodynamic (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 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 modeling the starspot contribution to stellar light curves.

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来源期刊

Astronomy & Astrophysics 地学天文-天文与天体物理

CiteScore

10.20

自引率

27.70%

发文量

2105

审稿时长

1-2 weeks

期刊介绍： Astronomy & Astrophysics is an international Journal that publishes papers on all aspects of astronomy and astrophysics (theoretical, observational, and instrumental) independently of the techniques used to obtain the results.