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Coronal Loops: New Insights from EIS Observations

机译:冠状环:EIS观察的新见解

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Multi-instrument observations of coronal loops of different active regions have been studied. The general features discussed in Del Zanna (2003) and Del Zanna and Mason (2003) based on SOHO/CDS are confirmed. Hinode/EIS high-cadence observations clearly show how dynamic loops are at all temperatures. This clearly reflects the fast changes in the photospheric magnetic fields measured by SOT over a minute timescale. Despite that, persistent patterns are present. In particular, the pattern of Doppler shifts and non-thermal widths, found for the first time in NOAA 10926 (cf. Del Zanna 2007, 2008), is actually a common feature in all active regions. It is likely that the majority of cool (0.5-1 MK) loops are observed during their radiatively cooling phase.
机译:研究了不同有源区的冠状环的多仪器观察。基于SOHO / CDS在Del Zanna(2003)和Del Zanna和Mason(2003)中讨论的一般功能得到了确认。 Hinode / EIS高音竞争观察清楚地表明了动态环在所有温度下。这清楚地反映了通过SOT测量的光学磁场的快速变化在一分钟的时间内测量。尽管如此,存在持久的模式。特别地,在NOAA 10926(CF.Delzanna 2007,2008)中首次发现的多普勒偏移和非热宽度的模式实际上是所有有效区域中的共同特征。在辐射冷却阶段期间观察到大部分冷却(0.5-1 mk)环。

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