标题： 旋转各向异性暗能量星的方面 显示英文标题

标题： Aspects of Rotating Anisotropic Dark Energy Stars

摘要： 通过采用修正的Chaplygin流体暗能量规范，我们构建了缓慢旋转的各向同性和各向异性暗能量星。 缓慢旋转是通过广义相对论Hartle-Thorne形式引入的；而各向异性则是通过Bowers-Liang规范引入的。 我们考虑了单极和四极变形，并对旋转的暗能量星进行了完整的分析。 通过数值求解存在各向异性的旋转恒星结构方程，我们分析并量化了暗能量星的各种特性，如质量（$M$）、半径、质量变形、角动量（$J$）、转动惯量和四极矩（$Q$），针对三种不同的状态方程参数。 我们发现，各向异性的缓慢旋转会导致恒星质量的显著变形，从而影响其他全局特性。 对于所考虑的角频率值，各向异性对恒星结构的影响比旋转的影响更为显著。 获得了用于衡量偏离Kerr度规黑洞的无量纲四极矩$QM/J^2$，适用于各向异性的暗能量星。 我们观察到，各向异性强度较高的暗能量星更接近Kerr解。 我们报告说，我们的结果与各种天体物理观测测量有相当大的一致性。 显示英文摘要

摘要： By employing modified Chaplygin fluid prescription for the dark energy, we construct slowly rotating isotropic and anisotropic dark energy stars. The slow rotation is incorporated via general relativistic Hartle-Thorne formalism; whereas the anisotropy is introduced through Bowers-Liang prescription. We consider both the monopole and quadrupole deformations and present a complete analysis of rotating dark energy stars. By numerically solving the rotating stellar structure equations in presence of anisotropy, we analyse and quantify various properties of dark energy stars such as mass ($M$), radius, mass deformation, angular momentum ($J$), moment of inertia, and quadrupole moment ($Q$), for three different equation of state parameters. We find that anisotropic slow rotation results in significant deformation of stellar mass and thereby affects other global properties studied. For the values of angular frequencies considered, the effect of anisotropy on the stellar structure is found to be more prominent than that due to rotation. The dimensionless quadrupole moment $QM/J^2$ measuring deviation from a Kerr metric black hole was obtained for anisotropic dark energy stars. We observe that dark energy stars with higher anisotropic strength tend to approach the Kerr solution more closely. We report that our results have considerable agreement with various astrophysical observational measurements.