论文标题
中子恒星外壳中的磁场演化：地壳破坏和塑料流动
Magnetic Field Evolution in the Crust of Neutron Stars: Crust Failure and Plastic Flow
论文作者
论文摘要
由于霍尔效应的效果，在中子恒星地壳中磁场的演变在过去的二十年中受到了很大的关注，这是有道理的，因为这种效应在高度磁化的中子恒星中的主导地位。但是，霍尔效应的适用性是基于以下假设：外壳不会失败并保持其刚性。对于基本强大的磁场可能会违反此假设。如果是这种情况，则磁场的演变由不同的方程组描述，其中包括非刚性外壳的效果。在本演讲中，经过对大厅演化的主要特征的简要回顾，我将讨论地壳的塑性流对磁场的影响，研究轴对称模型。此外，外壳失败影响整体演变的方式，如果故障为局部，中间或全球，则会出现重大差异。非常值得注意的是，地壳失败和可塑性不会消除大厅的效果，在某些情况下，它们甚至可能导致更具戏剧性的进化。我将讨论这些影响在中子星正时行为的影响，并特别关注正时噪声，爆发和故障。
The evolution of the magnetic field in neutron star crusts because of the Hall effect has received significant attention over the last two decades, which is strongly justified because of the dominance of this effect in highly magnetised neutron stars. However, the applicability of the Hall effect is based on the assumption that the crust does not fail and sustains its rigidity. This assumption can be violated for substantially strong magnetic fields. If this is the case, the evolution of the magnetic field is described by a different set of equations, which include the effects of a non-rigid crust. In this talk, after a brief review of the main characteristic of the Hall evolution, I will discuss the impact a plastic flow of the crust has on the magnetic field, studying axisymmetric models. Moreover, the way the crust fails impacts the overall evolution, with major differences appearing if the failure is local, intermediate or global. Quite remarkably, crustal failure and plasticity do not annul the Hall effect, and under certain circumstances they may even lead to a more dramatic evolution. I will discuss the impact of these effects in the context of neutron star timing behaviour, with special focus on timing noise, outbursts and glitches.
