Neutron stars in degenerate higher-order scalar-tensor theories

被引：9

作者：

Boumaza, Hamza ^{[1
,2
,3
]}

Langlois, David ^{[4
]}

机构：

[1] Ecole Normale Super Kouba, Lab Phys Particules & Phys Stat LPPPS, BP 92, Algiers 16050, Algeria

[2] Univ Mohamed Seddik Ben Yahia, Fac Exact & Comp Sci, Lab Theoret Phys, BP 98, Ouled Aissa 18000, Jijel, Algeria

[3] Univ Mohamed Seddik Ben Yahia, Fac Exact & Comp Sci, Dept Phys, BP 98, Ouled Aissa 18000, Jijel, Algeria

[4] Univ Paris Cite, CNRS, AstroParticule & Cosmol, F-75013 Paris, France

来源：

PHYSICAL REVIEW D | 2022年 / 106卷 / 08期

关键词：

ROTATING RELATIVISTIC STARS; EQUATION-OF-STATE; INERTIA; MOMENT;

D O I：

10.1103/PhysRevD.106.084053

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study neutron star configurations in a simple shift-symmetric subfamily of degenerate higher-order scalar-tensor theories, whose deviations from general relativity (GR) are characterized by a single parameter. We compute the radial profiles of neutron stars in these theories of modified gravity, using several realistic equations of state for the neutron star matter. We find neutron stars with masses and radii significantly larger than their GR counterparts. We then consider slowly rotating solutions and determine the relation between the dimensionless moment of inertia and the compactness, a relation that has the property to be almost insensitive to the equation of state.

引用

页数：11

共 33 条

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