论文标题
太阳惯性波的光谱求解器
A spectral solver for solar inertial waves
论文作者
论文摘要
惯性波主要由科里奥利力驱动，可能在太阳能动力学中起重要作用，并为太阳下表面提供了一个窗口。后者使我们能够推断出传统声波热疗学技术无法获得的特性。因此，这些正常模式的完整表征在实现太阳下地下动力学的研究方面有希望。在这项工作中，我们开发了一个光谱特征值求解器，以建模太阳中惯性波的光谱。我们将太阳对流区建模为一种无弹性介质，并求解动量和能量方程的正常模式。我们证明，求解器不仅可以很好地重现观察到的模式频率和线路宽度，而且还可以很好地重现部门rossby模式，而且还可以重现最近观察到的高频惯性模式。此外，我们认为光谱求解器是对太阳上惯性模式建模的数值方法的有用贡献。
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.
