Equation of state and radial oscillations of neutron stars

被引：20

作者：

Sun, Ting-Ting ^{[1
]}

Zheng, Zi-Yue ^{[1
]}

Chen, Huan ^{[1
]}

Burgio, G. Fiorella ^{[2
]}

Schulze, Hans-Josef ^{[2
]}

机构：

[1] China Univ Geosci, Sch Math & Phys, Lumo Rd 388, Wuhan 430074, Hubei, Peoples R China

[2] Univ Catania, Ist Nazl Fis Nucl, Sez Catania, Dipartimento Fis, Via Santa Sofia 64, I-95123 Catania, Italy

来源：

PHYSICAL REVIEW D | 2021年 / 103卷 / 10期

基金：

中国国家自然科学基金;

关键词：

COMPACT STARS; MAXIMUM MASS; MATTER; STABILITY; MODEL; CHARGE;

D O I：

10.1103/PhysRevD.103.103003

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We investigate radial oscillations of pure neutron stars and hybrid stars, employing equations of state of nuclear matter from Brueckner-Hartree-Fock theory, and of quark matter from the Dyson-Schwinger quark model, performing a Gibbs construction for the mixed phase in hybrid stars. We calculate the eigenfrequencies and corresponding oscillation functions. Our results for the zero points of the first-order radial oscillation frequencies give the maximum mass of stable neutron stars, consistent with the common criterion dM/d rho(c) = 0. Possible observations of the radial oscillation frequencies could help to learn more about the equation of state, predict the maximum mass of neutron stars more precisely, and indicate the presence of quark matter.

引用

页数：10

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