论文标题
使用正常模式耦合验证环形流的反转
Validating inversions for toroidal flows using normal-mode coupling
论文作者
论文摘要
正常模式耦合是一种使用模式本征函数的测量值来推断太阳的内部结构。该技术导致了对太阳内部环形流的演化和结构的见解。在这里，我们通过生成与输入流相关的合成地震测量并比较输入和反向速度，来验证一种反转算法，以实现正常模式耦合。我们研究了四个不同的输入环形流量和计算合成学的情况，这些情况考虑了太阳的部分可见性。我们使用减法最佳定位平均值（SOLA）将合成型倒置，并尝试减轻模式泄漏的系统。我们证明，最终，反转仅与我们对流速度之间相关性的模型一样好。
Normal-mode coupling is a helioseismic technique that uses measurements of mode eigenfunctions to infer the interior structure of the Sun. This technique has led to insights into the evolution and structure of toroidal flows in the solar interior. Here, we validate an inversion algorithm for normal-mode coupling by generating synthetic seismic measurements associated with input flows and comparing the input and inverted velocities. We study four different cases of input toroidal flows and compute synthetics that take into account the partial visibility of the Sun. We invert the synthetics using Subtractive Optimally Localized Averages (SOLA) and also try to mitigate the systematics of mode leakage. We demonstrate that, ultimately, inversions are only as good as the model we assume for the correlation between flow velocities.
