Magnetic loading of magnetars’ flares
Magnetic loading of magnetars’ flares
复制标题
磁星耀斑的磁负载
DOI：
10.1093/mnras/stab3154
复制
发表时间：
2022
影响因子：
4.8
通讯作者：
Lyutikov, Maxim
中科院分区：
文献类型：
--
作者：
Lyutikov, Maxim
磁星是快速射电暴的可能来源，它产生稳定的高度相对论性的磁化风和偶尔的喷射事件。我们证明了磁通量守恒的要求占主导地位的磁爆炸的整体动力学。这是错过了在传统的流体动力学模型的喷射作为扩展壳参数增加磁场，以及一维模型的磁扰动。磁星的磁爆炸与靠近光柱的耀斑前风形成力平衡。然后，它们随着风安静地平流或作为电磁干扰传播。在风中不会产生强烈的冲击波。
Magnetars, the likely sources of fast radio bursts, produce both steady highly relativistic magnetized winds and occasional ejection events. We demonstrate that the requirement of conservation of the magnetic flux dominates the overall dynamics of magnetic explosions. This is missed in conventional hydrodynamic models of the ejections as expanding shell with parametrically added magnetic field, as well as one-dimensional models of magnetic disturbances. Magnetic explosions from magnetars come into force balance with the pre-flare wind close to the light cylinder. They are then advected quietly with the wind or propagate as electromagnetic disturbances. No powerful shock waves are generated in the wind.