论文标题

在He I吸收线中染色层的差异旋转

Differential rotation of the chromosphere in the He I absorption line

论文作者

Li, KJ, Xu, JC, Xie, JL, Feng, W

论文摘要

差异旋转是太阳发电机理论的基础。从Carrington旋转2032到2135的HE I强度的概要图用于研究HE I吸收系中太阳能球的差异旋转。令人惊讶的是,染色体的旋转速度比下面的光球更快。在现代天文学中,色球和电晕的异常加热一直是一个大问题。据推测,具有磁通量的小磁元素在$(2.9-32.0)\ times 10^{18} $ mx范围内,固定在leptocline中,加热安静的染色体以呈现异常温度的升高,使其与leptoclocline相同的速率旋转。发现染色体中旋转速率的差异被强磁场增强,但是在鲜明的对比下,在Photophere强磁场上,强烈的磁场抑制了旋转速率的差异。这些发现给出了合理的解释。

Differential rotation is the basis of the solar dynamo theory. Synoptic maps of He I intensity from Carrington rotations 2032 to 2135 are utilized to investigate the differential rotation of the solar chromosphere in the He I absorption line. The chromosphere is surprisingly found to rotate faster than the photosphere below it. The anomalous heating of the chromosphere and corona has been a big problem in modern astronomy. It is speculated that the small-scale magnetic elements with magnetic flux in the range of $(2.9 - 32.0)\times 10^{18}$ Mx which are anchored in the leptocline, heat the quiet chromosphere to present the anomalous temperature increase, causing it to rotate at the same rate as the leptocline. The differential of rotation rate in the chromosphere is found to be strengthened by strong magnetic fields, but in stark contrast, at the photosphere strong magnetic fields repress the differential of rotation rate. A plausible explanation is given for these findings.

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