A new anisotropic compact star model having Matese & Whitman mass function

被引：16

作者：

Bhar, Piyali ^{[1
]}

Ratanpal, B. S. ^{[2
]}

机构：

[1] Govt Gen Degree Coll, Dept Math, Hooghly 712409, W Bengal, India

[2] Maharaja Sayajirao Univ Baroda, Fac Engn & Technol, Dept Appl Math, Vadodara 390001, India

来源：

ASTROPHYSICS AND SPACE SCIENCE | 2016年 / 361卷 / 07期

关键词：

General relativity; Matese & Whitman mass function; Anisotropy; Compact star;

D O I：

10.1007/s10509-016-2811-3

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Present paper proposed a new singularity free model of anisotropic compact star. The Einstein field equations are solved in closed form by utilizing Matese & Whitman mass function. The model parameters rho, p(r) and p(t) all are well behaved inside the stellar interior and our model satisfies all the required conditions to be physically acceptable. The model given in the present work is compatible with observational data of compact objects like SAX J 1808.4-3658 (SS1), SAX J 1808.4-3658 (SS2) and 4U 1820-30. A particular model of 4U 1820-30 is studied in detail and found that it satisfies all the condition needed for physically acceptable model. The present work is the generalization of Sharma and Ratanpal (Int. J. Mod. Phys. D 22: 1350074, 2013) model for compact stars admitting quadratic equation of state.

引用

页数：7

共 19 条

[1] Exact Solution of a (2+1)-Dimensional Anisotropic Star in Finch and Skea Spacetime [J].

Bhar, Piyali ;

Rahaman, Farook ;

Biswas, Ritabrata ;

Fatima, Hafiza Ismat .

COMMUNICATIONS IN THEORETICAL PHYSICS, 2014, 62 (02) :221-226

[2] COLLAPSED NUCLEI [J].

BODMER, AR .

PHYSICAL REVIEW D, 1971, 4 (06) :1601-&

[3] 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

[4]

Bondi H, 1999, MON NOT R ASTRON SOC, V302, P337, DOI 10.1046/j.1365-8711.1999.02137.x

[5] GENERAL RELATIVISTIC FLUID SPHERES [J].

BUCHDAHL, HA .

PHYSICAL REVIEW, 1959, 116 (04) :1027-1034

[6]

Dev K., 2004, INT J MOD PHYS D, V13, P1389, DOI DOI 10.1142/S0218271804005584

[7] A REALISTIC STELLAR MODEL BASED ON AN ANSATZ OF DUORAH AND RAY [J].

FINCH, MR ;

SKEA, JEF .

CLASSICAL AND QUANTUM GRAVITY, 1989, 6 (04) :467-476

[8] Local anisotropy in self-gravitating systems [J].

Herrera, L ;

Santos, NO .

PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 1997, 286 (02) :53-130

[9] Stable dark energy stars [J].

Lobo, FSN .

CLASSICAL AND QUANTUM GRAVITY, 2006, 23 (05) :1525-1541

[10] Anisotropic stars in general relativity [J].

Mak, MK ;

Harko, T .

PROCEEDINGS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES, 2003, 459 (2030) :393-408

← 1 2 →