Bayesian inference of the crust–core transition density via the neutron-star radius and neutron-skin thickness data

作     者：Wen-Jie Xie Zi-Wei Ma Jun-Hua Guo Wen-Jie Xie;Zi-Wei Ma;Jun-Hua Guo

作者机构：Department of PhysicsYuncheng UniversityYuncheng044000China 

出 版 物：《Nuclear Science and Techniques》 (核技术（英文）)

年 卷 期：2023年第34卷第6期

页      面：125-133页

核心收录：

学科分类：07[理学] 070401[理学-天体物理] 0704[理学-天文学] 

基　　金：supported by the Shanxi Provincial Foundation for Returned Overseas Scholars (No. 20220037) Natural Science Foundation of Shanxi Province (No. 20210302123085) Discipline Construction Project of Yuncheng University 

主　　题：Crust–core transition density of neutron stars Neutron-star radius Neutron-skin thickness Bayesian inference approach L–K_(sym) 

摘      要：In this work,we perform a Bayesian inference of the crust-core transition density ρ_(t) of neutron stars based on the neutron-star radius and neutron-skin thickness data using a thermodynamical *** and Gaussian distributions for the ρ_(t) prior were adopted in the Bayesian *** has a larger probability of having values higher than 0.1 fm^(−3) for ρ_(t) as the uniform prior and neutron-star radius data were *** was found to be controlled by the curvature K_(sym) of the nuclear symmetry *** phenomenon did not occur if K_(sym) was not extremely negative,namely,K_(sym)−200 *** value ofρ_(t) obtained was 0.075_(−0.01)^(+0.005) fm^(−3) at a confidence level of 68%when both the neutron-star radius and neutron-skin thickness data were *** anti-correlations were observed between ρ_(t),slope L,and curvature of the nuclear symmetry *** dependence of the three L-K_(sym) correlations predicted in the literature on crust-core density and pressure was quantitatively *** most probable value of 0.08 fm^(−3) for ρ_(t) was obtained from the L-K_(sym) relationship proposed by Holt et *** larger values were preferred for the other two relationships.