arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2211.03323astro-ph.SR
收藏

太阳惯性波的谱解算器

A spectral solver for solar inertial waves

Jishnu Bhattacharya, Shravan M. Hanasoge

摘要:

惯性波主要由科里奥利力驱动,可能在太阳动力学中发挥重要作用,此外,还提供了一个了解太阳次表层的窗口。后者使我们能够推断出传统的声波日震学技术无法获得的特性。因此,这些正常模式的充分表征,使调查太阳地下动力学的承诺。在这项工作中,我们开发了一个频谱特征值求解器来模拟太阳中的惯性波的频谱。我们将太阳对流区模拟为滞弹性介质,并求解动量和能量方程的简正模。我们表明,求解器可以重现所观察到的模式频率和线宽以及,不仅部门Rossby模式,而且最近观察到的高频惯性模式。此外,我们相信,光谱求解器是一个有用的贡献,模拟太阳上的惯性模式的数值方法。

英文摘要:

Inertial waves, which are dominantly driven by the Coriolis force, likely play an important role in solar dynamics, and additionally, provide a window into the solar subsurface. The latter allows us to infer properties that are inaccessible to the traditional technique of acoustic-wave helioseismology. Thus, a full characterization of these normal modes holds promise in enabling the investigation of solar subsurface dynamics. In this work, we develop a spectral eigenvalue solver to model the spectrum of inertial waves in the Sun. We model the solar convection zone as an anelastic medium, and solve for the normal modes of the momentum and energy equations. We demonstrate that the solver can reproduce the observed mode frequencies and line-widths well, not only of sectoral Rossby modes, but also the recently observed high-frequency inertial modes. In addition, we believe that the spectral solver is a useful contribution to the numerical methods on modeling inertial modes on the Sun.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑