论文标题
内皮EOS对中子星特性的影响
Effect of Inner Crust EoS on Neutron star properties
论文作者
论文摘要
在相对论平均场（RMF）模型的框架内研究了中子恒星最大质量和半径。研究了使用不同对称能量斜率参数的状态（eos）的不同内皮方程（EOS），在规范质量$ r_ {1.4} $处的半径变化。发现尽管NS最大质量和相应的半径不会随着内部外壳eoss的不同而变化很大，但半径和1.4 $ M _ {\ odot} $在外壳EOS的不同选择中，在大约1-2 km的情况下，在规范质量的半径中，潮汐变异性的变化不大。对于非统一的EOSS，低对称能斜率参数的外壳在规范质量上会产生低NS半径。还研究了最大旋转中子星的性能。在斜率参数时，也可以看到旋转星半径1.4 $ m _ {\ odot} $的变化。与静态中子星相似，旋转中子星的半径为1.4 $ m _ {\ odot} $受内皮的斜率参数的影响。还计算了其他重要量，例如惯性矩，频率，旋转动能与重力能比率。发现这些量与地壳斜率参数的变化与质量和NS半径更成正比。
The neutron star maximum mass and the radius are investigated within the framework of the relativistic mean-field (RMF) model. The variation in the radius at the canonical mass, $R_{1.4}$, using different inner crust equation of state (EoS) with different symmetry energy slope parameter is studied. It is found that although the NS maximum mass and the corresponding radius do not vary much with different inner crust EoSs, the radius and the tidal deformability at 1.4$M_{\odot}$ vary with the different choice of crust EoS and variation of about 1-2 km is seen in the radius at the canonical mass. For non-unified EoSs, the crust with a low symmetry energy slope parameter produces a low NS radius at the canonical mass. The properties of maximally rotating neutron stars are also studied. The variation in the radius of rotating star at the canonical mass 1.4$M_{\odot}$ is also seen with the slope parameter. Similar to the static neutron star, the radius at 1.4$M_{\odot}$ of rotating neutron star is affected by slope parameter of the inner crust. Other important quantities like moment of inertia, frequency, rotational kinetic energy to gravitational energy ratio are also calculated. The variation in these quantities with the crust slope parameter is found to be more proportional to the mass and the radius of NS.
