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Neutron star properties in density-dependent relativistic Hartree-Fock theory
Sun, Bao Yuan; Long, Wen Hui; Meng, Jie; Lombardo, U.; Sun, BY , Peking Univ, Sch Phys, Beijing 100871, Peoples R China
2008
发表期刊PHYSICAL REVIEW C
ISSN0556-2813
卷号78期号:6页码:-
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.
部门归属[Sun, BY; Long, WH; Meng, J] Peking Univ, Sch Phys, Beijing 100871, Peoples R China; [Long, WH] Tech Univ Munich, Dept Phys, D-85748 Garching, Germany; [Meng, J] Univ Stellenbosch, Dept Phys, ZA-7600 Stellenbosch, South Africa; [Meng, J] Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China; [Meng, J] Natl Lab Heavy Ion Accelertor, Ctr Theoret Nucl Phys, Lanzhou 730000, Peoples R China; [Lombardo, U] Ist Nazl Fis Nucl, Lab Nazl Sud, I-95123 Catania, Italy; [Lombardo, U] Univ Catania, Dipartimento Fis & Astron, I-95125 Catania, Italy; [Sun, BY; Long, WH; Meng, J] Peking Univ, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China
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
学科领域Physics
资助者Major State Basic Research Development Program[2007CB815000]; National Natural Science Foundation of China[10435010, 10775004, 10221003]; Asia-Europe Link Program in Nuclear Physics and Astrophysics[CN/ASIA-LINK/008094-791] ; Major State Basic Research Development Program[2007CB815000]; National Natural Science Foundation of China[10435010, 10775004, 10221003]; Asia-Europe Link Program in Nuclear Physics and Astrophysics[CN/ASIA-LINK/008094-791] ; Major State Basic Research Development Program[2007CB815000]; National Natural Science Foundation of China[10435010, 10775004, 10221003]; Asia-Europe Link Program in Nuclear Physics and Astrophysics[CN/ASIA-LINK/008094-791] ; Major State Basic Research Development Program[2007CB815000]; National Natural Science Foundation of China[10435010, 10775004, 10221003]; Asia-Europe Link Program in Nuclear Physics and Astrophysics[CN/ASIA-LINK/008094-791] ; Major State Basic Research Development Program[2007CB815000]; National Natural Science Foundation of China[10435010, 10775004, 10221003]; Asia-Europe Link Program in Nuclear Physics and Astrophysics[CN/ASIA-LINK/008094-791] ; Major State Basic Research Development Program[2007CB815000]; National Natural Science Foundation of China[10435010, 10775004, 10221003]; Asia-Europe Link Program in Nuclear Physics and Astrophysics[CN/ASIA-LINK/008094-791] ; Major State Basic Research Development Program[2007CB815000]; National Natural Science Foundation of China[10435010, 10775004, 10221003]; Asia-Europe Link Program in Nuclear Physics and Astrophysics[CN/ASIA-LINK/008094-791] ; Major State Basic Research Development Program[2007CB815000]; National Natural Science Foundation of China[10435010, 10775004, 10221003]; Asia-Europe Link Program in Nuclear Physics and Astrophysics[CN/ASIA-LINK/008094-791]
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收录类别SCI
资助者Major State Basic Research Development Program[2007CB815000]; National Natural Science Foundation of China[10435010, 10775004, 10221003]; Asia-Europe Link Program in Nuclear Physics and Astrophysics[CN/ASIA-LINK/008094-791] ; Major State Basic Research Development Program[2007CB815000]; National Natural Science Foundation of China[10435010, 10775004, 10221003]; Asia-Europe Link Program in Nuclear Physics and Astrophysics[CN/ASIA-LINK/008094-791] ; Major State Basic Research Development Program[2007CB815000]; National Natural Science Foundation of China[10435010, 10775004, 10221003]; Asia-Europe Link Program in Nuclear Physics and Astrophysics[CN/ASIA-LINK/008094-791] ; Major State Basic Research Development Program[2007CB815000]; National Natural Science Foundation of China[10435010, 10775004, 10221003]; Asia-Europe Link Program in Nuclear Physics and Astrophysics[CN/ASIA-LINK/008094-791] ; Major State Basic Research Development Program[2007CB815000]; National Natural Science Foundation of China[10435010, 10775004, 10221003]; Asia-Europe Link Program in Nuclear Physics and Astrophysics[CN/ASIA-LINK/008094-791] ; Major State Basic Research Development Program[2007CB815000]; National Natural Science Foundation of China[10435010, 10775004, 10221003]; Asia-Europe Link Program in Nuclear Physics and Astrophysics[CN/ASIA-LINK/008094-791] ; Major State Basic Research Development Program[2007CB815000]; National Natural Science Foundation of China[10435010, 10775004, 10221003]; Asia-Europe Link Program in Nuclear Physics and Astrophysics[CN/ASIA-LINK/008094-791] ; Major State Basic Research Development Program[2007CB815000]; National Natural Science Foundation of China[10435010, 10775004, 10221003]; Asia-Europe Link Program in Nuclear Physics and Astrophysics[CN/ASIA-LINK/008094-791]
WOS记录号WOS:000262248100065
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文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/5423
专题理论物理所SCI论文
通讯作者Sun, BY , Peking Univ, Sch Phys, Beijing 100871, Peoples R China
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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):-.
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