论文标题
积分中子星的内皮的状态和组成方程：多组分模型
Equation of state and composition of the inner crust of an accreting neutron star: multicomponent model
论文作者
论文摘要
正确解释X射线观测的瞬时积分中子星需要对这些物体中的核身体过程进行建模。我们考虑了一系列核反应链，该核反应驱动了中子恒星中的地壳组成并加热恒星。我们用简化的逐步方式描述的核反应的动力学构建了多组分方法。通过发射和中子的捕获对核之间的核子的重新分布可显着影响核反应链和内皮的组成。特别是，即使外壳具有单组分的组成，内皮中的游离中子的出现也会导致反应链的分支和多组分组成的形成。我们应用可压缩的液滴核模型，其中包括游离中子对核能的影响。它允许我们计算物质状态的组合物，加热曲线和状态方程ρ〜2 \ times 10^{13} g cm^{ - 3}。
Correct interpretation of X-ray observations of transiently accreting neutron stars requires modeling of nuclear-physical processes in these objects. We consider a chain of nuclear reactions that drives the crust composition in an accreting neutron star and heats up the star. We constructed multicomponent approach with the kinetics of nuclear reactions described in simplified stepwise manner. The redistribution of nucleons between nuclei by emission and capture of neutrons is shown to significantly affect the nuclear reaction chains and the composition of the inner crust. In particular, even if the outer crust has one-component composition, the appearance of free neutrons in the inner crust leads to branching of reaction chains and formation of the multicomponent composition. We apply the compressible liquid drop nuclear model, which includes effects of free neutrons on nuclear energies. It allows us to calculate the composition, the heating profile and the equation of state of matter up to densities ρ~ 2 \times 10^{13} g cm^{-3}.
