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arXiv 1104.3867astro-ph.SR
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太阳黑子类型对太阳频率依赖性的证据

Evidence for solar frequency dependence on sunspot type

Charles S. Baldner, Richard S. Bogart, Sarbani Basu

摘要:

由环形图测量的高度太阳模式频率已知在活动区域中发现的强磁场的存在下改变。我们研究了这些频率的变化,从迈克尔逊多普勒成像仪(MDI)的SoHO航天器上的数据分析的活动区域的大样本,跨越太阳活动周期23。我们确认,频率增加与增加磁场强度,这种依赖性一般是线性的。我们发现,这种依赖性是轻微的,但显着不同的活动区域与不同的太阳黑子类型。

英文摘要:

High degree solar mode frequencies as measured by ring diagrams are known to change in the presence of the strong magnetic fields found in active regions. We examine these changes in frequency for a large sample of active regions analyzed with data from the Michelson Doppler Imager (MDI) onboard the SoHO spacecraft, spanning most of solar cycle 23. We confirm that the frequencies increase with increasing magnetic field strength, and that this dependence is generally linear. We find that the dependence is slightly but significantly different for active regions with different sunspot types.

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