The Role of Active Regions in the Generation of Torsional Oscillations

K. Petrovay; E. Forgács-dajka

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The Role of Active Regions in the Generation of Torsional Oscillations

机译：有源区在扭转振荡产生中的作用

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We present a model for torsional oscillations where the inhibiting effect of active region magnetic fields on turbulence locally reduces turbulent viscous torques, leading to a cycle- and latitude-dependent modulation of the differential rotation. The observed depth dependence of torsional oscillations as well as their phase relationship with the sunspot butterfly diagram are reproduced quite naturally in this model. The resulting oscillation amplitudes are significantly smaller than observed, though they depend rather sensitively on model details. Meridional circulation is found to have only a weak effect on the oscillation pattern.

机译：我们提出了一种扭转振荡模型，其中，主动区磁场对湍流的抑制作用会局部减小湍流粘性转矩，从而导致差速旋转的周期和纬度相关调制。该模型非常自然地再现了观察到的扭转振荡的深度依赖性以及它们与黑子蝶形图的相位关系。尽管它们相当敏感地取决于模型的细节，但最终的振幅却比观察到的要小得多。发现子午循环对振荡模式的影响很小。

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《Solar Physics》 |2002年第1期|39-52|共14页
作者
K. Petrovay; E. Forgács-dajka;
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Eötvös University;

Eötvös University;

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机译：积极区域在扭转振荡产生中的作用

The Role of Active Regions in the Generation of Torsional Oscillations

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