A comparative analysis of self-consistent charged anisotropic spheres

被引:11
作者
Ahmad, Mushtaq [1 ]
Mustafa, G. [2 ]
Shamir, M. Farasat [3 ]
机构
[1] Natl Univ Comp & Emerging Sci, Chiniot Faisalabad Campus, Islamabad, Pakistan
[2] Zhejiang Normal Univ, Dept Phys, Jinhua 321004, Zhejiang, Peoples R China
[3] Natl Univ Comp & Emerging Sci, Lahore Campus, Islamabad, Pakistan
来源
INTERNATIONAL JOURNAL OF MODERN PHYSICS A | 2021年 / 36卷 / 27期
关键词
Karmarkar condition; stellar structures; Bardeen model; Reissner-Nordstrom stars; GRAVITATIONAL COLLAPSE; STRANGE STARS; MODELS; STABILITY; EQUILIBRIUM; STATE;
D O I
10.1142/S0217751X21502031
中图分类号
O57 [原子核物理学、高能物理学];
学科分类号
070202 ;
摘要
This study is devoted to exploring the charged stellar structures under embedded space-time using the Karmarkar condition. For this, spherically symmetric space-time with the anisotropic source of fluid possessing an electric charge has been incorporated. Further, the Bardeen and Reissner-Nordstrom geometries have been employed as exterior space-time to calculate the values of the involved constants. The interior solutions of a stellar object have been worked out with the observational mass M = 2.01M(circle dot), and R-epsilon = 9.1 km. It is argued that the acquired solutions accomplish all the necessary conditions for self-consistent charged stars. It has been noted through the detailed graphical analysis that our obtained solutions are physically stable and self-consistent with the best degree of accuracy for n is an element of [12, 15], where parameter n is involved in the model under discussion. Beyond this bound 12 <= n <= 15, the realistic solutions of stellar models under discussion could not be found. After perceiving the marginal dissimilarities between our proposed models in both cases, Andreasson's limit root R-epsilon/3 + root R-epsilon/9 + q(2)/3R(epsilon)>= root M, critically important for the stellar structures, has been achieved in both the models under investigation. Lastly, it is established that the parameter n has a substantial effect on worked-out solutions under the employment of Bardeen and Reissner-Nordstrom's stellar structures.
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页数:27
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