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arXiv 1507.08440astro-ph.SR
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太阳极冕洞上方准周期传播扰动的源

Sources of quasi-periodic propagating disturbances above a solar polar coronal hole

Fangran Jiao, Lidong Xia, Bo Li, Zhenghua Huang, Xing Li, Kalugodu Chandrashekhar, Chaozhou Mou, Hui Fu

摘要:

准周期传播扰动(PD)在太阳极冕洞中普遍存在。目前尚不清楚是什么导致PD。在这项工作中,我们调查如何产生的PD在太阳大气中通过分析一个四小时的数据集所采取的大气成像组件(AIA)上的太阳动力学天文台(SDO)。我们发现令人信服的证据表明,在太阳过渡区的针状活动所看到的AIA 304通带负责PD在日冕中显示在AIA 171图像。我们的结论是,骨针是一个重要的来源,触发冠状PD。

英文摘要:

Quasi-periodic propagating disturbances (PDs) are ubiquitous in polar coronal holes on the Sun. It remains unclear as to what generates PDs. In this work, we investigate how the PDs are generated in the solar atmosphere by analyzing a fourhour dataset taken by the Atmospheric Imaging Assembly (AIA) on board the Solar Dynamics Observatory (SDO). We find convincing evidence that spicular activities in the solar transition region as seen in the AIA 304 Å passband are responsible for PDs in the corona as revealed in the AIA 171 Å images. We conclude that spicules are an important source that triggers coronal PDs.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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