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arXiv 0906.2544astro-ph.SR
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与浪涌相关的爆炸事件

Explosive events associated with a surge

M. S. Madjarska, J. G. Doyle, B. de Pontieu

摘要:

太阳大气包含了各种各样的小尺度瞬态特征。在这里,我们通过TRACE成像仪、SUMER和SoHO船上的CDS光谱仪以及SVST La Palma同时拍摄的光谱和成像数据,探索其中一些之间的相互关系,例如浪涌、爆炸事件和闪光灯。在时间和太阳XY的所有数据的对齐表明,SUMER线的配置文件,这是由于爆炸事件,是由于浪涌现象。最有可能的是,这一浪涌是由一个或多个Elerman炸弹触发的,这些炸弹在Halalpha +-350 A中最清晰可见,但也被TRACE Fe IX/X 171 A记录,并对应于CDS Mg IX 368.07 A线的强烈辐射增加。通过本研究,我们证明了将小规模瞬态事件划分为许多不同的子组,例如爆炸事件,闪光灯,针状物,浪涌或只是增亮,是模糊的,这意味着仅基于光谱或成像特性以及光谱和空间分辨率不足的特征的定义可能是不完整的。

英文摘要:

The solar atmosphere contains a wide variety of small-scale transient features. Here, we explore the inter-relation between some of them such as surges, explosive events and blinkers via simultaneous spectral and imaging data taken with the TRACE imager, the SUMER, and CDS spectrometers on board SoHO, and SVST La Palma. The alignment of all data both in time and solar XY shows that SUMER line profiles, which are attributed to explosive events, are due to a surge phenomenon. The surge is triggered, most probably, by one or more Elerman bombs which are best visible in Halpha +-350 A but were also registered by TRACE Fe IX/X 171 A and correspond to a strong radiance increase in the CDS Mg IX 368.07 A line. With the present study we demonstrate that the division of small-scale transient events into a number of different subgroups, for instance explosive events, blinkers, spicules, surges or just brightenings, is ambiguous, implying that the definition of a feature based only on either spectroscopic or imaging characteristics as well as insufficient spectral and spatial resolution can be incomplete.

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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