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arXiv 0912.3467astro-ph.SR
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从Ca II IR光谱恢复色球层的视线磁场

Recovering the Line-Of-Sight Magnetic Field in the Chromosphere from Ca II IR Spectra

F. Wöger, S. Wedemeyer-Böhm, H. Uitenbroek, T. Rimmele

摘要:

我们提出了一种方法来推导的视线磁通量密度从测量色球钙II红外线在854.2 nm。该方法结合了两个众所周知的技术,重心和平分线的方法,在一个单一的混合技术。该技术进行了测试与磁通管的静磁模拟。我们应用该方法的观测与干涉二维光谱仪(IBIS)安装在Dunn太阳望远镜的NSO/SP调查的低色球层的形态,重点对色球对应的底层光球磁通量元素。

英文摘要:

We propose a method to derive the line-of-sight magnetic flux density from measurements in the chromospheric Ca II IR line at 854.2 nm. The method combines two well-understood techniques, the center-of-gravity and bisector methods, in a single hybrid technique. The technique is tested with magneto-static simulations of a flux tube. We apply the method to observations with the Interferometric Bidimensional Spectrometer (IBIS) installed at the Dunn Solar Telescope of the NSO/SP to investigate the morphology of the lower chromosphere, with focus on the chromospheric counterparts to the underlying photospheric magnetic flux elements.

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