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arXiv 1602.04820astro-ph.SR
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宁静太阳Hα瞬变和相应的小尺度过渡区及日冕加热

Quiet Sun Hα Transients and Corresponding Small-Scale Transition Region and Coronal Heating

V. M. J. Henriques, D. Kuridze, M. Mathioudakis, F. P. Keenan

摘要:

快速蓝移和红移漂移(RBE和RRE)可能是II型针状体的盘上对应物。最近,从RBE/RRE的加热签名已被检测到IRIS缝颚图像占主导地位的网络补丁周围的过渡区线。此外,在AIA诊断中观察到II型针状体的特征。AIA诊断的全磁盘,永远存在的性质应该为我们提供足够的统计数据,以直接确定RBE和RRE对过渡区和日冕加热的重要性。我们发现,具有高度统计学意义,至少有11%的低日冕增亮检测到一个安静的太阳区域在304年,可以归因于RBE或RRE观察到的Hα,和6%的匹配171检测到的事件RBE或RRE具有非常相似的统计两种类型的Hα功能。我们采用了一种统计方法,允许在冠状通道中进行噪声检测,并为我们提供了一个较低的,但具有统计意义的界限。此外,我们认为在时间和空间的重叠功能的基础上的匹配,并找到强烈的视觉指示日冕事件和共同发展,但不重叠,RBE和RRE之间的进一步对应。

英文摘要:

Rapid Blue- and Red-shifted Excursions (RBEs and RREs) are likely to be the on-disk counterparts of Type II spicules. Recently, heating signatures from RBEs/RREs have been detected in IRIS slit-jaw images dominated by transition-region lines around network patches. Additionally, signatures of Type II spicules have been observed in AIA diagnostics. The full-disk, ever-present nature of the AIA diagnostics should provide us with sufficient statistics to directly determine how important RBEs and RREs are to the heating of the transition region and corona. We find, with high statistical significance, that at least 11% of the low-coronal brightenings detected in a quiet-Sun region in 304, can be attributed to either RBEs or RREs as observed in Hα, and a 6% match of 171 detected events to RBEs or RREs with very similar statistics for both types of Hα features. We took a statistical approach that allows for noisy detections in the coronal channels and provides us with a lower, but statistical significant, bound. Further, we consider matches based on overlapping features in both time and space, and find strong visual indications of further correspondence between coronal events and co-evolving but non-overlapping, RBEs and RREs.

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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