论文标题
Skyrme-Hartree-fock框架中故障脉冲星的特性
Properties of glitching pulsars in the Skyrme-Hartree-Fock framework
论文作者
论文摘要
我们解决了中子恒星的地壳特性问题，例如地壳质量，地壳半径，惯性矩的地壳部分，并研究了与脉冲星观察到的小故障机理相关的地壳和结构特性。使用$β$平衡的（NPE $ $ $ $）密集的中子恒星物质确定了中子恒星中惯性矩的质量，半径和地壳分数，使用扩展的Skyrme与NRAPR和Brussels-Montreal参数集获得的有效相互作用获得。从这些集合中计算出的最大中子星质量能够达到$ \ sim $ 2 $ m_ \ odot $及更高，从而证实了最近观察到的紧凑型恒星的质量。惯性矩的地壳分数敏感地取决于核壳转变时的压力和相应的密度。核壳的过渡密度和压力以及惯性总矩的提取的最小地壳分数为脉冲星的半径提供了极限。目前的计算表明，由于地壳夹带，惯性总矩的地壳分数约为5.5 $ \％$。
We address the issues of crustal properties of neutron stars such as crustal mass, crustal radius, crustal fraction of moment of inertia and investigate the crustal and structural properties related to the glitching mechanism observed in pulsars. The mass, radius and crustal fraction of moment of inertia in neutron stars have been determined using $β$-equilibrated (npe$μ$) dense neutron star matter obtained using the extended Skyrme effective interactions with NRAPR and Brussels-Montreal parameter sets. The maximum mass of neutron star calculated from these sets is able to reach $\sim$2$M_\odot$ and higher, corroborating the recently observed masses of compact stars. The crustal fraction of the moment of inertia depends sensitively on the pressure and corresponding density at core-crust transition. The core-crust transition density and pressure together with the extracted minimum crustal fraction of the total moment of inertia provide a limit for the radii of pulsars. Present calculations imply that due to crustal entrainment the crustal fraction of the total moment of inertia is about 5.5$\%$.
