Neutron Stars in f(R)-Gravity and Its Extension with a Scalar Axion Field

被引：6

作者：

Astashenok, Artyom ^{[1
]}

Odintsov, Sergey ^{[2
,3
,4
]}

机构：

[1] Immanuel Kant Balt Fed Univ, Inst Phys, Math & IT, Nevskogo Str 14, Kaliningrad 236041, Russia

[2] ICREA, Passeig Luis Co 23, Barcelona 08010, Spain

[3] CSIC, Inst Space Sci IEEC, C Can Magrans S-N, Barcelona 08193, Spain

[4] TUSUR, Int Lab Theoret Cosmol, Tomsk 634050, Russia

来源：

PARTICLES | 2020年 / 3卷 / 03期

关键词：

neutron stars; modified gravity; axions; MODIFIED GRAVITY; DARK-MATTER; MODULATION; LAMBDA;

D O I：

10.3390/particles3030036

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present a brief review of general results about non-rotating neutron stars in simple R-2 gravity and its extension with a scalar axion field. Modified Einstein equations are presented for metrics in isotropical coordinates. The mass-radius relation, mass profile and dependence of mass from central density on various equations of state are given in comparison to general relativity.

引用

页码：532 / 542

页数：11

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