Magnetic Fields in Quiescent Prominences
Magnetic Fields in Quiescent Prominences
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静止日珥中的磁场
DOI：
10.1086/169193
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发表时间：
1990
期刊：
影响因子：
--
通讯作者：
P. Martens
中科院分区：
文献类型：
--
作者：
A. A. Ballegooijen;P. Martens
考虑了高纬度静止日珥中轴向场的起源。几乎所有静止日珥都遵循相同的半球相关规则这一事实强烈表明，太阳差分自转在产生轴向场方面起着重要作用。然而，观测结果与轴向场是由作用于现有日冕磁场的差分旋转产生的假设不一致。对于这种差异，我们考虑了几种可能的解释。研究了轴向场的符号取决于嵌入日珥的磁场拓扑的可能性，以及中性线相对于东西方向倾斜的可能性，因此差分旋转导致中性线也随时间旋转。还考虑了静止日珥的轴向场起源于太阳表面以下的可能性。 29 参考文献
The origin of the axial fields in high-latitude quiescent prominences is considered. The fact that almost all quiescent prominences obey the same hemisphere-dependent rule strongly suggests that the solar differential rotation plays an important role in producing the axial fields. However, the observations are inconsistent with the hypothesis that the axial fields are produced by differential rotation acting on an existing coronal magnetic field. Several possible explanations for this discrepancy are considered. The possibility that the sign of the axial field depends on the topology of the magnetic field in which the prominence is embedded is examined, as is the possibility that the neutral line is tilted with respect to the east-west direction, so that differential rotation causes the neutral line also to rotate with time. The possibility that the axial fields of quiescent prominences have their origin below the solar surface is also considered. 29 refs.