论文标题

安静的太阳光电湍流的功率谱的解释

Interpretation of the power spectrum of the quiet Sun photospheric turbulence

论文作者

Goldman, Itzhak

论文摘要

Abramenko和Yurchyshyn最近的一篇论文中介绍了光球磁场湍流的观察功率谱。在这里,我专注于从Goode太阳能望远镜上运行的近红外成像光谱仪(NIRIS)的观察结果得出的功率谱。对于较小的空间尺度,后者从索引$ -1.2 $ $ -1.2 $的电力法向更陡峭的电力法过渡。本文介绍了对这一变化的解释。此外,这种解释提供了观测值探测的湍流层有效宽度的估计。事实证明,后者实际上等于光球的深度。

Observational power spectra of the photospheric magnetic field turbulence, of the quiet-sun, were presented in a recent paper by Abramenko and Yurchyshyn. Here I focus on the power spectrum derived from the observations of the Near InfraRed Imaging Spectrapolarimeter (NIRIS) operating at the Goode Solar Telescope. The latter exhibits a transition from a power law with index $-1.2$ to a steeper power law with index $-2.2$, for smaller spatial scales. The present paper presents an interpretation of this change. Furthermore, this interpretation provides an estimate for the effective width of the turbulent layer probed by the observations. The latter turns out to be practically equal to the depth of the photosphere.

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