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arXiv 1209.5693astro-ph.SR
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太阳针状体中扭结驻波的观测

Observation of standing kink waves in solar spicules

H. Ebadi, T. V. Zaqarashvili, I. Zhelyazkov

摘要:

我们分析了太阳翼上的Hinode/SOT获得的CaII H线的时间序列。时距分析表明,针状体轴在距光球不同高度处发生准周期横向位移。横向位移的平均周期约为180 s,平均振幅为1 arcsec。然后,我们求解了磁管波的频散关系,并绘制了向上定常流的频散曲线。理论分析表明,观测到的振荡可能对应于扭结驻波的基波。

英文摘要:

We analyze the time series of CaII H-line obtained from Hinode/SOT on the solar limb. The time-distance analysis shows that the axis of spicule undergos quasi-periodic transverse displacement at different heights from the photosphere. The mean period of transverse displacement is ~180 s and the mean amplitude is 1 arcsec. Then, we solve the dispersion relation of magnetic tube waves and plot the dispersion curves with upward steady flows. The theoretical analysis shows that the observed oscillation may correspond to the fundamental harmonic of standing kink waves.

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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