论文标题
HMI环图分析：跟踪，噪声和分辨率的影响
HMI Ring Diagram Analysis: Effects of tracking, noise and resolution
论文作者
论文摘要
环图分析是一种标准的局部热震技术。通常使用来自太阳能动力学观测站（SDO）上的Helioseissic和磁成像仪（HMI）的数据进行戒指 - 模具分析，并且适合功率谱以及反转结果是标准数据产品。在本文中，我们研究了不同跟踪速率，噪声和分辨率对戒指线结果的影响。大多数分析的价格为$ 15^\ circ $ tiles，但我们还检查了不同瓷砖尺寸的效果。我们发现的最大效果是解决方案。多普勒噪声对结果的影响很小，除了在最深的区域，瓷砖可以给出可靠的结果；跟踪率的变化具有相似的效果。
Ring diagram analysis is a standard local helioseismic technique. Data from the Helioseismic and Magnetic Imager (HMI) on the Solar Dynamics Observatory (SDO) are routinely used for Ring-diagram analysis, and fits to the power spectra as well as inversion results are standard data products. In this paper we examine the effects of different tracking rates, noise, and resolution on ring-diagram results. Most of the analysis is for $15^\circ$ tiles, but we also examine the effects of different tile sizes. The largest effect we find is that of resolution. Doppler noise has very little effect on the results, except perhaps at the deepest regions for which the tiles can give reliable results; variations in the tracking rate have a similar effect.
