标题： 中子星外壳中的手征磁不稳定性：磁星磁场的起源 显示英文标题

标题： On the Origin of Magnetar Fields: Chiral Magnetic Instability in Neutron Star Crusts

摘要： 我们研究中子星地壳中的手征磁不稳定性，作为一种放大磁场的潜在机制。 这种不稳定性可能在化学平衡的小偏差持续数十年时被激活，这是由恒星逐渐减速或残留的热量损失驱动的。 我们的研究结果表明，这种机制可以产生与符合观测数据的模型一致的强而大尺度的磁场。 此外，这种不稳定性在恒星地壳中自然生成磁螺旋度，这对于形成和维持强大的偶极环形磁场至关重要，这通常用于解释磁星的观测现象。 我们的结果为磁星磁场的起源提供了一种基于微观物理的替代方案，以替代经典的流体动力学发电机，解决了该领域长期存在的争论。 显示英文摘要

摘要： We investigate the chiral magnetic instability in the crust of a neutron star as a potential mechanism for amplifying magnetic fields. This instability may become active when small deviations from chemical equilibrium are sustained over decades, driven by the star's gradual spin-down or residual heat loss. Our findings suggest that this mechanism can produce strong, large-scale magnetic fields consistent with models that align with observational data. Additionally, this instability naturally generates magnetic helicity in the star's crust, which is crucial for forming and maintaining strong dipolar toroidal fields, often invoked to explain magnetar observational phenomena. Our results offer a microphysically-based alternative to classical hydrodynamical dynamos for the origin of magnetar magnetic fields, addressing a long-standing debate in the field.