论文标题
各向异性紧凑型恒星物体在改良的高斯重力中
Anisotropic Compact Stellar Objects in Modified Gauss-Bonnet Gravity
论文作者
论文摘要
本文致力于通过在改良的高斯重力的背景下采用嵌入1类技术来研究各向异性紧凑的恒星结构。未知常数通过内部时空与Schwarzschild外部几何形状进行匹配，对应于$ f（\ Mathcal {g}）=χ\ Mathcal {g}^{n} $模型，其中$χ$和$ n $是积极的常数。观察到的紧凑型星候选物（SAX J1808.4-3658，Vela X-1，PSR J0348+0432，4U 1608-52）的质量用于消失在恒星表面上的径向压力以预测其radii。我们通过物质变量，能量限制，绝热指数和因果关系条件的图形行为检查了所得解决方案的生存力和稳定性。发现将Class-1溶液嵌入各向异性紧凑型恒星在该理论中是可行且稳定的。
This paper is devoted to studying anisotropic compact stellar structures by adopting embedding class-1 technique in the background of modified Gauss-Bonnet gravity. The unknown constants are evaluated by the matching of interior spacetime with the Schwarzschild exterior geometry corresponding to $f(\mathcal{G})=χ\mathcal{G}^{n}$ model, where $χ$ and $n$ are positive constants. The observed masses of compact star candidates (SAX J1808.4-3658, Vela X-1, PSR J0348+0432, 4U 1608-52) are used with the condition of vanishing radial pressure at the stellar surface to predict their radii. We have examined viability and stability of the resulting solution through graphical behavior of matter variables, energy constraints, adiabatic index and causality condition. It is found that embedding class-1 solution for anisotropic compact stars is viable and stable in this theory.
