论文标题
超导中子星中的磁场演化时间尺度
Magnetic field evolution timescales in superconducting neutron stars
论文作者
论文摘要
最近开发的中子星核中磁场演变的自洽方法被推广到超流体和超导中子星的情况下。将这种方法应用于由中子，质子，电子和MUON组成的中子星核的冷藏，我们发现与正常物质的情况相似，磁场的任意构型可能会导致产生宏观粒子速度，从而强烈超过其扩散性（相对）速度。这种效应基本上加速了恒星芯中磁场的演变。提出并讨论了在中子星的不同阶段，这种进化的时间尺度的层次结构。有人认为，核心中的磁场不能被视为冷冻或消失，其时间进化应影响中子恒星的观察特性。
The self-consistent approach to the magnetic field evolution in neutron star cores, developed recently, is generalised to the case of superfluid and superconducting neutron stars. Applying this approach to the cold matter of neutron star cores composed of neutrons, protons, electrons, and muons we find that, similarly to the case of normal matter, an arbitrary configuration of the magnetic field may result in generation of macroscopic particle velocities, strongly exceeding their diffusive (relative) velocities. This effect substantially accelerates evolution of the magnetic field in the stellar core. An hierarchy of timescales of such evolution at different stages of neutron star life is proposed and discussed. It is argued that the magnetic field in the core cannot be considered as frozen or vanishing and that its temporal evolution should affect the observational properties of neutron stars.
