Modified TOV in gravity's rainbow: properties of neutron stars and dynamical stability conditions

被引：105

作者：

Hendi, S. H. ^{[1
,2
,3
]}

Bordbar, G. H. ^{[1
,2
,4
]}

Panah, B. Eslam ^{[1
,2
]}

Panahiyan, S. ^{[1
,2
,5
]}

机构：

[1] Shiraz Univ, Coll Sci, Dept Phys, Shiraz 71454, Iran

[2] Shiraz Univ, Coll Sci, Biruni Observ, Shiraz 71454, Iran

[3] RIAAM, POB 55134-441, Maragha, Iran

[4] Ctr Excellence Astron & Astrophys CEAA RIAAM Mara, POB 55134-441, Maragha 5517736698, Iran

[5] Shahid Beheshti Univ, Dept Phys, Tehran 19839, Iran

来源：

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS | 2016年 / 09期

关键词：

neutron stars; modified gravity; massive stars; ASYMMETRICAL NUCLEAR-MATTER; EQUATION-OF-STATE; BLACK-HOLES; COMPACT STARS; DARK ENERGY; HYDROSTATIC EQUILIBRIUM; ROTATING NEUTRON; MASS; CANCELLATIONS; ANNIHILATION;

D O I：

10.1088/1475-7516/2016/09/013

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

In this paper, we consider a spherical symmetric metric to extract the hydrostatic equilibrium equation of stars in (3 + 1)-dimensional gravity's rainbow in the presence of cosmological constant. Then, we generalize the hydrostatic equilibrium equation to d-dimensions and obtain the hydrostatic equilibrium equation for this gravity. Also, we obtain the maximum mass of neutron star using the modern equations of state of neutron star matter derived from the microscopic calculations. It is notable that, in this paper, we consider the effects of rainbow functions on the diagrams related to the mass-central mass density (M-rho(c)) relation and also the mass-radius (M-R) relation of neutron star. We also study the effects of rainbow functions on the other properties of neutron star such as the Schwarzschild radius, average density, strength of gravity and gravitational redshift. Then, we apply the cosmological constant to this theory to obtain the diagrams of M-rho(c) (or M-R) and other properties of these stars. Next, we investigate the dynamical stability condition for these stars in gravity's rainbow and show that these stars have dynamical stability. We also obtain a relation between mass of neutron stars and Planck mass. In addition, we compare obtained results of this theory with the observational data.

引用

页数：30

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