Neutron star properties in density-dependent relativistic Hartree-Fock theory
文献类型：期刊论文
| 作者 | Sun, Bao Yuan; Long, Wen Hui; Meng, Jie; Lombardo, U.; Sun, BY , Peking Univ, Sch Phys, Beijing 100871, Peoples R China |
| 刊名 | PHYSICAL REVIEW C
 |
| 出版日期 | 2008 |
| 卷号 | 78期号:6页码:- |
| ISSN号 | 0556-2813 |
| 关键词 | Mean-field Theory Asymmetric Nuclear-matter Nonlinear Sigma-term Heavy-ion Reactions Ground-state Bogoliubov Theory Recent Progress Shell Structure Exotic Nuclei Finite Nuclei |
| 英文摘要 | With the equations of state provided by the newly developed density-dependent relativistic Hartree-Fock (DDRHF) theory for hadronic matter, the properties of the static and beta-equilibrium neutron stars without hyperons are studied for the first time and compared to the predictions of the relativistic mean-field models and recent observational data. The influences of Fock terms on properties of asymmetric nuclear matter at high densities are discussed in detail. Because of the significant contributions from the sigma- and omega-exchange terms to the symmetry energy, large proton fractions in neutron stars are predicted by the DDRHF calculations, which strongly affect the cooling process of the star. A critical mass of about 1.45M(circle dot), close to the limit of 1.5M(circle dot) determined by modern soft X-ray data analysis, is obtained by DDRHF with the effective interactions PKO2 and PKO3 for the occurrence of the direct Urca process in neutron stars. The maximum masses of neutron stars given by the DDRHF calculations lie between 2.45M(circle dot) and 2.49M(circle dot), which are in reasonable agreement with the high pulsar mass of (2.08 +/- 0.19)M(circle dot) from PSR B1516 + 02B. It is also found that the mass-radius relations of neutron stars determined by DDRHF are consistent with the observational data from thermal radiation measurements in the isolated neutron star RX J1856, quasiperiodic brightness oscillations in the low-mass X-ray binaries 4U 0614 + 09 and 4U 1636-536, and the redshift determined in the low-mass X-ray binary EXO 0748-676. |
| 学科主题 | Physics |
| URL标识 | 查看原文 |
| WOS记录号 | WOS:000262248100065 |
| 公开日期 | 2012-08-02 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/5423]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 通讯作者 | Sun, BY , Peking Univ, Sch Phys, Beijing 100871, Peoples R China |
| 推荐引用方式 GB/T 7714 | Sun, Bao Yuan,Long, Wen Hui,Meng, Jie,et al. Neutron star properties in density-dependent relativistic Hartree-Fock theory[J]. PHYSICAL REVIEW C,2008,78(6):-. |
| APA | Sun, Bao Yuan,Long, Wen Hui,Meng, Jie,Lombardo, U.,&Sun, BY , Peking Univ, Sch Phys, Beijing 100871, Peoples R China.(2008).Neutron star properties in density-dependent relativistic Hartree-Fock theory.PHYSICAL REVIEW C,78(6),-. |
| MLA | Sun, Bao Yuan,et al."Neutron star properties in density-dependent relativistic Hartree-Fock theory".PHYSICAL REVIEW C 78.6(2008):-. |
入库方式： OAI收割
来源：理论物理研究所
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