论文标题

带有Karmarkar状况的Bardeen恒星结构

Bardeen Stellar Structures with Karmarkar Condition

论文作者

Mustafa, G., Shamir, M. Farasat, Ahmad, Mushtaq

论文摘要

当前的研究重点是通过在Bardeen Black Hole几何形状的背景下采用Karmarkar条件来讨论新的紧凑型星溶液家族。为此,我们考虑在电荷存在下具有各向异性流体分布的静态球形时空。我们考虑了$ g_ {rr} $公制功能的特定模型,以描述满足Karmarkar条件的新解决方案。此外,我们研究了具有观察质量和半径的两种不同模型的紧凑型恒星的内部解,即$(m = 177万_ {\ odot},\; r_ {b} = 9.56km)$ and $(m = 197亿_ {\ odot},\ odot},\; r _}发现这些解决方案满足了带电恒星的所有必要条件。通过图形讨论,可以注意到,我们计算出的解决方案在[1.8,7)$中的$ n \中具有最佳的准确性,其中参数$ n $参与了正在讨论的模型中。但是,人们认为所呈现的模型违反了\ {2,4,6 \} $的$ n \的所有物理条件。最后,可以得出结论,参数$ n $对Bardeen Stellar结构的背景下的解决方案产生了强大的影响。

Current study is focussed to discuss the existence of a new family of compact star solutions by adopting the Karmarkar condition in the background of Bardeen black hole geometry. For this purpose, we consider static spherically symmetric spacetime with anisotropic fluid distribution in the presence of electric charge. We consider a specific model of $g_{rr}$ metric function, to describe a new family of solutions which satisfies the Karmarkar condition. Further, we investigate the interior solutions for two different models of compact stars with observational mass and radii, i.e., $(M=1.77M_{\odot}, \;R_{b}=9.56km)$ and $(M=1.97M_{\odot}, \;R_{b}=10.3km)$. It is found that these solutions fulfill all the necessary conditions for a charged star. Through graphical discussion, it is noticed that our calculated solutions are physically arguable with a best degree of accuracy for $n\in[1.8,7)$, where parameter $n$ is involved in the model under discussion. However, it is perceived that the presented model violates all the physical conditions for $n\in\{2,4,6\}$. Finally, it is concluded that the parameter $n$ has a strong impact on the obtained solutions in the context of Bardeen stellar structures.

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