论文标题
中子扩散在积聚中子恒星的地壳中的关键作用
Crucial role of neutron diffusion in the crust of accreting neutron stars
论文作者
论文摘要
人们普遍认为，观察到的在静态状态下瞬时积聚的中子星的温度受到深层加热的支持，与地壳中的非平衡放热反应有关。传统上，这些反应是通过考虑通过压缩物质来控制的核进化来研究的。在这里，我们表明这种方法具有基本的弱点，也就是说，在内部地壳的某些区域，保守力的某些区域适用于物质成分（核和中子），并不是机械平衡。原则上，力平衡可以通过耗散力恢复，但是所需的扩散通量与爱丁顿积聚时的总baryon通量相同。我们认为，内皮中中子的重新分布应涉及现实的胶囊模型。
Observed temperatures of transiently accreting neutron stars in the quiescent state are generally believed to be supported by deep crustal heating, associated with non-equilibrium exothermic reactions in the crust. Traditionally, these reactions are studied by considering nuclear evolution governed by compression of the accreted matter. Here we show that this approach has a basic weakness, that is that in some regions of the inner crust the conservative forces, applied for matter components (nuclei and neutrons), are not in mechanical equilibrium. In principle the force balance can be restored by dissipative forces, however the required diffusion fluxes are of the same order as total baryon flux at Eddington accretion. We argue that redistribution of neutrons in the inner crust should be involved in realistic model of accreted crust.
