论文标题
Sun-As-A-Star观测中声学功率的意外太阳能周期变化
Unexpected solar-cycle variation of acoustic mode power in Sun-as-a-star observations
论文作者
论文摘要
我们通过查看伯明翰太阳能振荡网络的45年观察结果的BINNED功率谱，研究了低度震震模式下功率的太阳能周期变化，该电源与峰值拟合获得的模式功率相比，该伯明翰太阳能振荡网络的模式功率更强大。清楚地看到了五分钟带中声模式功率的太阳能周期变化。尽管在表面磁性活动方面，但与周期23相比，尽管在表面磁活动方面相比，同时24周期的模式功率在太阳能最大值中的降低非常相似，但对于两个循环的降低也非常相似，这表明模式功率和磁性活动之间的关系比以前认为的更为复杂。这与模式频率相反，该模式频率与活性有很强的相关性，而不同太阳循环的响应之间仅存在细微的差异。
We examine the solar-cycle variation of the power in the low-degree helioseismic modes by looking at binned power spectra from 45 years of observations with the Birmingham Solar Oscillations Network, which provides a more robust estimate of the mode power than that obtained by peak fitting. The solar-cycle variation of acoustic mode power in the five-minute band is clearly seen. Unusually, even though Cycle 24 was substantially weaker in terms of surface magnetic activity than Cycle 23, the reduction in mode power at solar maximum is very similar for the two cycles, suggesting that the relationship between mode power and magnetic activity is more complex than has previously been thought. This is in contrast to the mode frequencies, which show a strong correlation with activity with only subtle differences between in the response across different solar cycles.
