Polarized Kink Waves in Magnetic Elements: Evidence for Chromospheric Helical Waves
Polarized Kink Waves in Magnetic Elements: Evidence for Chromospheric Helical Waves
复制标题
磁性元件中的偏振扭结波：色球层螺旋波的证据
DOI：
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发表时间：
2017
期刊：
影响因子：
--
通讯作者：
F. Zuccarello
中科院分区：
文献类型：
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作者：
M. Stangalini;F. Giannattasio;Robertus Erd'elyi;S. Jafarzadeh;G. Consolini;S. Criscuoli;I. Ermolli;S. Guglielmino;F. Zuccarello
近年来，对太阳大气层进行的新的高空间分辨率观测显示，存在过多的小尺度磁性元素，其分辨率已达到目前太阳望远镜组的分辨率极限（太阳光球层上的100-120公里）。这些小的磁场集中，由于颗粒抖振，可以支持和引导几个磁流体动力学波模式，最终将有助于上层大气的能量收支。本文利用瑞典1 m太阳望远镜获得的高时空分辨率色球数据，将经验模态分解技术应用于太阳磁场特征的跟踪，分析了一组色球磁元水平速度矢量的扰动。我们发现观测证据表明，速度矢量本身的两个分量之间的相位关系，导致其螺旋运动。
In recent years, new high spatial resolution observations of the Sun's atmosphere have revealed the presence of a plethora of small-scale magnetic elements down to the resolution limit of the current cohort of solar telescopes (∼100–120 km on the solar photosphere). These small magnetic field concentrations, due to the granular buffeting, can support and guide several magnetohydrodynamic wave modes that would eventually contribute to the energy budget of the upper layers of the atmosphere. In this work, exploiting the high spatial and temporal resolution chromospheric data acquired with the Swedish 1 m Solar Telescope, and applying the empirical mode decomposition technique to the tracking of the solar magnetic features, we analyze the perturbations of the horizontal velocity vector of a set of chromospheric magnetic elements. We find observational evidence that suggests a phase relation between the two components of the velocity vector itself, resulting in its helical motion.
DOI：
10.1088/0004-637x/727/1/17
发表时间：
2011-01
期刊：
The Astrophysical Journal
影响因子：
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作者：
V. Fedun;S. Shelyag;R. Erdélyi
通讯作者：
V. Fedun;S. Shelyag;R. Erdélyi
太阳大气中传播的 MHD 扭结波的产生和阻尼
DOI：
10.1088/0004-637x/784/1/29
发表时间：
2014
期刊：
The Astrophysical Journal
影响因子：
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作者：
Morton R
通讯作者：
Morton R