论文标题

在保形电触发引力中逼真的紧凑型星星

Realistic compact stars in conformal teleparallel gravity

论文作者

Nashed, G. G. L., Bamba, K.

论文摘要

我们探索一个物理对称性维尔贝因的内部解决方案,具有两个未知功能在保形远程引力中。可以在封闭的系统中描述场方程的特定形式的度量电位和适当的各向异性函数。结果,我们发现了一组与观察到的脉冲星一致的新配置。特别是,内部时空的边界条件用于Schwarzschild时空,以约束通过紧凑对象表面的单位值的共形场。此外,我们将目前的型号应用于Pulsar $ 4U1608-52 $,近似半径$ r = 9.52 \ pm 0.15 $ km,质量$ m = 1.74 \ pm 0.14 \,m _ {\ circledcirc} $。为了分析稳定性,我们还通过假设Tolman-Oppenheimer-Volkov方程,绝热指数和静态状态来研究因果关系和绝热指数。此外,研究了所考虑的模型与其他脉冲星的一致性。

We explore an interior solution of a physically symmetric vierbein with two unknown functions in conformal teleparallel gravity. The field equations can be described in a closed system for a particular form of the metric potentials and an appropriate anisotropic function. As a result, we find a new set of configurations consistent with observed pulsars. In particular, the boundary conditions for the interior spacetime are used for the Schwarzschild spacetime to constrain the conformal field that with a unit value through the surface of a compact object. Furthermore, we apply the present model to the pulsar $4U1608-52$ with approximated radius $R= 9.52 \pm 0.15$ km and mass $M= 1.74 \pm 0.14\, M_{\circledcirc}$. To analyze the stability, we also study the causality conditions and the adiabatic index by assuming the Tolman-Oppenheimer-Volkov equation, adiabatic index and the static state. Moreover, the consistency of the model under consideration with other pulsars is investigated.

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