论文标题
地壳在统一的密集物质处理中中子恒星的潮汐变形性的作用
Role of the crust on the tidal deformability of a neutron star within a unified treatment of dense matter
论文作者
论文摘要
使用状态BSK24的最新统一方程，研究了地壳在冷非核中子恒星的潮汐变形性上的作用。这种基于核能量密度理论的状态方程式提供了对所有恒星区域的热力学一致描述。比较了该状态方程式获得的结果，该结果与完全由均匀物质制成的假定中子恒星计算的结果进行了比较。因此，发现地壳层的存在可显着减少爱情数字$ k_2 $，尤其是对于低质量恒星。但是，这种减少主要是由于恒星半径的增加几乎独立于状态方程。这允许仅使用均匀物质状态方程来对现实中子星进行简单的分析估计。
The role of the crust on the tidal deformability of a cold nonaccreted neutron star is studied using the recent unified equation of state BSk24. This equation of state, which is based on the nuclear-energy density functional theory, provides a thermodynamically consistent description of all stellar regions. Results obtained with this equation of state are compared to those calculated for a putative neutron star made entirely of homogeneous matter. The presence of the crustal layers is thus found to significantly reduce the Love number $k_2$, especially for low-mass stars. However, this reduction mainly arises from the increase in the stellar radius almost independently of the equation of state. This allows for a simple analytic estimate of $k_2$ for realistic neutron stars using the equation of state of homogeneous matter only.
