Meridional Circulation and Global Solar Oscillations
Meridional Circulation and Global Solar Oscillations
复制标题
经向环流和全球太阳振荡
DOI：
--
复制
发表时间：
2007
期刊：
影响因子：
--
通讯作者：
Michael Stix
中科院分区：
文献类型：
--
作者：
Markus Roth;Michael Stix
我们通过 Lavely 和 Ritzwoller 提出的准简并摄动理论（Roy. Soc. Lond. Phil. Trans. Ser. A339, 431, 1992）研究了大尺度经向环流对太阳 p 模式的影响。作为输入流，我们使用遵守连续性方程的各种静止经向环流模型。这种流动扰乱了太阳平衡模型的本征模。我们推导出太阳 p 模式频率倍数中的经向环流的特征。在大多数情况下，经向环流会导致多重峰的负平均频移。简要讨论了进一步可能观察到的影响。
We investigate the influence of large-scale meridional circulation on solar p modes by quasi-degenerate perturbation theory, as proposed by Lavely and Ritzwoller (Roy. Soc. Lond. Phil. Trans. Ser. A339, 431, 1992). As an input flow we use various models of stationary meridional circulation obeying the continuity equation. This flow perturbs the eigenmodes of an equilibrium model of the Sun. We derive the signatures of the meridional circulation in the frequency multiplets of solar p modes. In most cases the meridional circulation leads to negative average frequency shifts of the multiplets. Further possibly observable effects are briefly discussed.