Well behaved anisotropic compact star models in general relativity

被引:14
作者
Jasim, M. K. [1 ]
Maurya, S. K. [1 ]
Gupta, Y. K. [2 ]
Dayanandan, B. [1 ]
机构
[1] Univ Nizwa, Coll Arts & Sci, Dept Math & Phys Sci, Nizwa, Oman
[2] Raj Kumar Goel Inst Technol, Ghaziabad 201003, UP, India
关键词
General relativity; Anisotropic fluid; Einstein's field equations; Compact star; Equation of state; SUPER-DENSE STAR; STRANGE STARS; FLUID; OBJECTS; SPHERES; EQUATIONS;
D O I
10.1007/s10509-016-2940-8
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Anisotropic compact star models have been constructed by assuming a particular form of a metric function e(lambda).. We solved the Einstein field equations for determining the metric function e(nu). For this purpose we have assumed a physically valid expression of radial pressure (p(r)). The obtained anisotropic compact star model is representing the realistic compact objects such as PSR 1937 +21. We have done an extensive study about physical parameters for anisotropic models and found that these parameters are well behaved throughout inside the star. Along with these we have also determined the equation of state for compact star which gives the radial pressure is purely the function of density i.e. p(r) = f (rho).
引用
收藏
页数:8
相关论文
共 52 条
[1]   STRANGE STARS [J].
ALCOCK, C ;
FARHI, E ;
OLINTO, A .
ASTROPHYSICAL JOURNAL, 1986, 310 (01) :261-272
[2]  
Bhar P., 2015, ARXIV151106962V1
[3]   Minimum mass-radius ratio for charged gravitational objects [J].
Boehmer, C. G. ;
Harko, T. .
GENERAL RELATIVITY AND GRAVITATION, 2007, 39 (06) :757-775
[4]   Bounds on the basic physical parameters for anisotropic compact general relativistic objects [J].
Bohmer, C. G. ;
Harko, T. .
CLASSICAL AND QUANTUM GRAVITY, 2006, 23 (22) :6479-6491
[5]   ANISOTROPIC SPHERES IN GENERAL RELATIVITY [J].
BOWERS, RL ;
LIANG, EPT .
ASTROPHYSICAL JOURNAL, 1974, 188 (03) :657-665
[6]   OBESE NEUTRON STARS [J].
BRECHER, K ;
CAPORASO, G .
NATURE, 1976, 259 (5542) :377-378
[7]   GENERAL RELATIVISTIC FLUID SPHERES [J].
BUCHDAHL, HA .
PHYSICAL REVIEW, 1959, 116 (04) :1027-1034
[8]   EQUILIBRIUM OF A STATIC CHARGED PERFECT FLUID SPHERE [J].
DIONYSIOU, DD .
ASTROPHYSICS AND SPACE SCIENCE, 1982, 85 (1-2) :331-343
[9]   ANISOTROPIC SPHERES WITH VARIABLE-ENERGY DENSITY IN GENERAL-RELATIVITY [J].
GOKHROO, MK ;
MEHRA, AL .
GENERAL RELATIVITY AND GRAVITATION, 1994, 26 (01) :75-84
[10]   A class of regular and well behaved charge analogue of Kuchowicz's relativistic super-dense star model [J].
Gupta, Y. K. ;
Maurya, Sunil Kumar .
ASTROPHYSICS AND SPACE SCIENCE, 2011, 332 (02) :415-421