Ap星的非偶极磁场
Non-dipolar magnetic fields in Ap stars
摘要：
A星中的任意初始磁场演化到稳定的平衡态。模拟的形成非轴对称平衡组成的扭曲的通量管蜿蜒的表面下的明星，和分析参数给出有关的稳定性和形式，这些平衡。这些结果可能有助于解释非偶极场Ap星的观测结果。这项工作也适用于其他本质上非对流的恒星，如白矮星和中子星。
英文摘要：
An arbitrary initial magnetic field in an A star evolves into a stable equilibrium. Simulations are presented of the formation of non-axisymmetric equilibria consisting of twisted flux tubes meandering under the surface of the star, and analytic arguments are given relating the stability and form of these equilibria. These results may help to explain observations of Ap stars with very non-dipolar fields. This work is also applicable to other essentially non-convective stars such as white dwarfs and neutron stars.
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