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首页> 外文期刊>The Astrophysical Journal. Supplement Series >Catalog of Decaying Kink Oscillations of Coronal Loops in the 24th Solar Cycle
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Catalog of Decaying Kink Oscillations of Coronal Loops in the 24th Solar Cycle

机译:第24个太阳循环中冠状环腐烂扭结振荡的目录

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摘要

A catalog of kink oscillations of solar coronal loops, which spans during almost all of solar cycle 24, is presented. The catalog is based on the observations made in the extreme ultraviolet band at 171 angstrom with Solar Dynamics Observatory/Atmospheric Imaging Assembly and includes parameters of 223 oscillating loops in 96 oscillation events. The catalog provides the information about the oscillation locations, time, and dates of the events, associated flare, initial displacement, oscillation period, exponential damping time, and apparent amplitude. The vast majority of the oscillation detections, 84%, were made in the loops situated near or off the solar limb. The oscillation periods are found to range from 1 to 28 minutes, with 74% of the events that have the period in the range of 2-10 minutes. About 90% of the oscillations have the apparent amplitude in the range of 1-10 Mm. The oscillating loop lengths are 70-600 Mm. The typical apparent amplitude is about 1% of the loop length. The oscillation period scales linearly with the loop length, and the damping time scales linearly with the period, which confirm previous findings. The oscillation quality factor scales with the amplitude to the power of minus 0.7. No statistically significant evidence of correlation was found between both the oscillation period and the mean sunspot number, and the loop length and mean sunspot number. The catalog provides the research community with the foundation for the further statistical study of kink oscillations and their use for coronal seismology.
机译:展示了在几乎所有太阳循环24期间跨越太阳冠状环的扭结振荡目录。目录基于171埃的极端紫外线带中的观察结果,其具有太阳能动力学观测台/大气成像组件,并且包括96个振荡事件中223振荡环的参数。目录提供了有关事件的振荡位置,时间和日期的信息,相关的耀斑,初始位移,振荡周期,指数阻尼时间和表观幅度的信息。绝大多数振荡检测84%,位于太阳肢体附近或偏离太阳肢体的环路中。振荡周期被发现为1至28分钟,其中74%的事件具有2-10分钟的时间。大约90%的振荡的振幅在1-10mm的范围内。振荡环长度为70-600mm。典型的表观幅度为环长度的约1%。振荡周期与循环长度线性缩放,并且阻尼时间与确认以前发现的时段线性缩放。振荡质量因子尺度与负0.7的功率的幅度缩放。在振荡周期和平均太阳黑子数和循环长度和平均太阳黑子数之间没有发现相关相关证据。该目录为研究界提供了对扭结振荡的进一步统计研究的基础及其对冠状地震学的使用。

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