Identifying the source of the material within coronal mass ejections (CMEs) and understanding CME onset mechanisms are fundamental issues in solar and space physics. Parameters relating to plasma composition, such as charge states and He abundance ( A He ), may be different for plasmas originating from differing processes or regions on the Sun. Thus, it is crucial to examine the relationship between in situ measurements of CME composition and activity on the Sun. We study the CME that erupted on 2014 September 10, in association with an X1.6 flare, by analyzing Atmospheric Imaging Assembly imaging and Interface Region Imaging Spectrograph (IRIS) spectroscopic observations and its in situ signatures detected by Wind and Advanced Composition Explorer. We find that during the slow expansion and intensity increase of the sigmoid, plasma temperatures of 9 MK, and higher, first appear at the footpoints of the sigmoid, associated with chromospheric brightening. Then the...

中文翻译：

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行星际CME的高氦丰度和电荷态及其在太阳上的物质来源

识别日冕物质抛射（CME）中物质的来源并了解CME的发生机制是太阳和空间物理学的基本问题。与等离子体组成有关的参数（例如电荷状态和He丰度（A He））对于源自太阳的不同过程或区域的等离子体可能会有所不同。因此，至关重要的是要检查CME组成的原位测量与太阳活动之间的关系。我们通过分析大气成像组件成像和界面区域成像光谱仪（IRIS）光谱学观察以及由Wind和Advanced Composition Explorer检测到的原位特征，研究了与X1.6耀斑有关的2014年9月10日爆发的CME。我们发现在乙状结肠缓慢扩张和强度增加期间，9MK及更高的等离子体温度首先出现在乙状结肠的脚点，与色球层变亮有关。那...