LARGE-MASS NEUTRON STARS WITH HYPERONIZATION

被引：57
|
作者：
Jiang, Wei-Zhou [1 ,2 ]
Li, Bao-An [3 ,4 ]
Chen, Lie-Wen [2 ,5 ,6 ]
机构：
[1] SE Univ, Dept Phys, Nanjing 211189, Jiangsu, Peoples R China
[2] Natl Lab Heavy Ion Accelerator, Ctr Theoret Nucl Phys, Lanzhou 730000, Peoples R China
[3] Texas A& M Univ Commerce, Dept Phys & Astron, Commerce, TX 75429 USA
[4] Xi An Jiao Tong Univ, Dept Appl Phys, Xian 710049, Peoples R China
[5] Shanghai Jiao Tong Univ, INPAC, Dept Phys, Shanghai 200240, Peoples R China
[6] Shanghai Jiao Tong Univ, Shanghai Key Lab Particle Phys & Cosmol, Shanghai 200240, Peoples R China
来源：
ASTROPHYSICAL JOURNAL | 2012年 / 756卷 / 01期
基金：
中国国家自然科学基金; 美国国家科学基金会;
关键词：
dense matter; equation of state; stars: neutron; EQUATION-OF-STATE; PHASE-TRANSITIONS; NUCLEAR-MATTER; QUARK MATTER; CONSTRAINTS; HYPERONS; PHYSICS;
D O I：
10.1088/0004-637X/756/1/56
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Within a density-dependent relativistic mean-field model and using in-medium meson-hadron coupling constants and meson masses, we explore the effects of in-medium hyperon interactions on the properties of neutron stars. We found that hyperonic constituents in large-mass neutron stars cannot be simply ruled out, while the recently measured mass of the millisecond pulsar J1614-2230 can significantly constrain in-medium hyperon interactions. In addition, we discuss the effects of nuclear symmetry energy on hyperonization in neutron stars.
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页数：8
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