Symmetry energy at supra-saturation densities via the gravitational waves from GW170817

被引：42

作者：

Tong, Hui ^{[1
]}

Zhao, Pengwei ^{[1
]}

Meng, Jie ^{[1
,2
,3
]}

机构：

[1] Peking Univ, Sch Phys, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China

[2] Univ Stellenbosch, Dept Phys, Stellenbosch, South Africa

[3] Kyoto Univ, Yukawa Inst Theoret Phys, Kyoto 6068502, Japan

来源：

PHYSICAL REVIEW C | 2020年 / 101卷 / 03期

基金：

中国国家自然科学基金; 国家重点研发计划;

关键词：

EQUATION-OF-STATE; NEUTRON-STARS; AB-INITIO; MATTER; PHYSICS; MASSES; RADII; DROPS;

D O I：

10.1103/PhysRevC.101.035802

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

Motivated by the historical detection of gravitational waves from GW170817, the neutron star and the neutron drop, i.e., a certain number of neutrons confined in an external field, are systematically investigated by ab initio calculations as well as the nonrelativistic and relativistic state-of-the-art density functional theories. Strong correlations are found among the neutron star tidal deformability, the neutron star radius, the rootmean-square radii of neutron drops, and the symmetry energies of nuclear matter at supra-saturation densities. For dense matter composed of nucleons only, these correlations, together with the upper limit on the tidal deformability extracted from GW170817, provides the constraints for the neutron star radii, the neutron drop radii, and the symmetry energy at twice saturation density as R-1.4 M Theta <= 13.4 +/- 0.2 km, R-nd <= 2.41 +/- 0.10 fm, and E-sym (2(rho 0) ) <= 60.7 +/- 10.9 MeV, respectively.

引用

页数：5

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