Traveling waves in the sunspot chromosphere: Problems and puzzles of experiments
Traveling waves in the sunspot chromosphere: Problems and puzzles of experiments
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太阳黑子色球层中的行波：实验的问题和困惑
DOI：
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发表时间：
2008
期刊：
影响因子：
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通讯作者：
S. Chupin
中科院分区：
文献类型：
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作者：
N. Kobanov;D. Kolobov;S. Chupin
讨论了在太阳黑子色球中观测到的波过程初步解释的困难。频率滤波有助于更清晰地显示行波，但最终会影响其参数估计的客观性。测量的水平相速度为40-70 km s - 1，半影为30-70 km s - 1。对高频率观测的分析揭示了三分钟振荡功率空间定位的高度反转。指出本影行波的模式不是恒定的，而是周期性地让位于驻波模式。
The difficulties of the primary interpretation of wave processes observed in the sunspot chromosphere are discussed. Frequency filtering is shown to be helpful in revealing traveling waves more clearly, which eventually affects the objectivity of estimating their parameters. The measured horizontal phase velocities are 40–70 km s−1 for umbrae and 30–70 km s−1 for penumbrae. Analysis of high-cadence observations has revealed an altitude inversion of the spatial localization of the three-minute oscillation power. It is pointed out that the pattern of umbral traveling waves is not constant and periodically gives way to the pattern of standing waves.