A comparative study on generalized model of anisotropic compact star satisfying the Karmarkar condition

被引:48
作者
Bhar, Piyali [1 ]
Singh, Ksh. Newton [2 ]
Sarkar, Nayan [3 ]
Rahaman, Farook [3 ]
机构
[1] Govt Gen Degree Coll, Dept Math, Hooghly 712409, W Bengal, India
[2] Natl Def Acad, Dept Phys, Pune 411023, Maharashtra, India
[3] Jadavpur Univ, Dept Math, Kolkata 700032, India
来源
EUROPEAN PHYSICAL JOURNAL C | 2017年 / 77卷 / 09期
关键词
GRAVITATIONAL-FIELD; SPACE; CRACKING; SPHERES; MASS;
D O I
10.1140/epjc/s10052-017-5149-2
中图分类号
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号
摘要
A new solution satisfying the Karmarkar condition is presented here. We were first to have discovered a hypergeometric function metric potential representing embedding class I spacetime. This new solution yields finite values of metric potentials, density, pressure, redshift, etc. and hence a non-singular solution. The solution is well behaved with respect to the parameter n = 12 to n = 24 corresponding to a stable configuration of mass 2.01M(circle dot) and radius 9.1 km. The internal properties of the solution are very different for n = 12 to n = 24; however, the total mass and radius is independent of the parameter n. The energy conditions are also holds good by the solution which thus can represent a physically viable matter distribution. The equilibrium condition and stability are also discussed through TOV-equation, cracking method and Gamma > 4/3. The static stability criterion is also well satisfied and the turning point corresponds to 4.46M(circle dot) for a radius of 9.1 km.
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页数:10
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