Solar oscillations in cycle 24 ascending
Solar oscillations in cycle 24 ascending
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第 24 周期太阳振荡上升
DOI：
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
T. Larson
中科院分区：
文献类型：
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作者：
K. Jain;S. Tripathy;F. Hill;T. Larson
太阳振荡频率随太阳活动周期的变化而变化，并与各种活动指数有很强的相关性。然而，第23和24周期之间的扩展极小值引起了几个关于频率和太阳活动之间的相关性的问题，其中具有不同模式集的频率感测到不同的极小值。在本文中，我们分析了中等程度的模式频率，太阳出现了异常长的时期的最小磁活动，研究他们的行为与活动指数，并比较结果与相应的阶段周期23。我们表明，基于周期23的上升阶段的模型是一个很好的预测周期24的上升阶段的行为。
Solar oscillation frequencies are known to follow the trend of solar cycle and show a strong correlation with various activity indices. However, the extended minimum between cycles 23 and 24 has raised several questions on the correlation between frequencies and solar activity where frequencies with different mode sets sensed different minima. In this paper, we analyze intermediate-degree mode frequencies as the Sun emerges from the unusually long period of minimal magnetic activity to study their behaviour with activity indices and compare results with the corresponding phase of cycle 23. We show that a model based on the rising phase of cycle 23 is a good predictor for behaviour in the rising phase of cycle 24.