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arXiv 1001.2108astro-ph.SR
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出射通量区磁场的三维结构

On the 3D Structure of the Magnetic Field in Regions of Emerging Flux

A. Asensio Ramos, J. Trujillo Bueno

摘要:

我们探讨了新兴通量区的光球和色球磁场。He I 10830 A红色混合成分的等效宽度的图像显示了可能被解释为磁环的平行结构的存在。我们指出,色球层的磁场强度类似于光球层的平滑版本,它与上述等效宽度图完全不相关。由于缺乏其他诊断,这表明我们不能排除这样一种可能性,即我们从观测中推断的色球场跟踪的是活动区的较低色球层,而不是沿着环路跟踪磁场。如果He I线是在磁环内形成的,我们指出了一个潜在的问题,出现在解释观测时,只使用一个组件沿视线。

英文摘要:

We explore the photospheric and chromospheric magnetic field in an emerging flux region. An image of the equivalent width of the He I 10830 A red blended component shows the presence of filamentary structures that might be interpreted as magnetic loops. We point out that the magnetic field strength in the chromosphere resembles a smoothed version of that found in the photosphere and that it is not correlated at all with the above-mentioned equivalent width map. Lacking other diagnostics, this suggests that one cannot discard the possibility that the chromospheric field we infer from the observations is tracing the lower chromosphere of the active region instead of tracing the magnetic field along loops. If the He I line is formed within magnetic loops, we point out a potential problem that appears when interpreting observations using only one component along the line-of-sight.

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