论文标题
在紧凑的星星中有和没有深色混合物的外来核心
Exotic Cores with and without Dark-Matter Admixtures in Compact Stars
论文作者
论文摘要
我们通过质量（$ m_x $）和半径（$ r_x $）来将紧凑型球形恒星配置的核心化，并研究总质量与总拉迪乌斯平面中所得的可允许的区域。在RADII $ r \ ge r_x $和压力$ p \ le p_x = p（r = r_x）$的压力下，使用的基督电晕型号是持续声音速度的（i）和（ii）dy $δ$δ$ DD-ME2的（i）由Buchdahl的准确溶解Ansatz提供的（II）。核心（$ r <r_x $）可能包含任何类型的材料，例如标准模型物质具有未指定的状态方程式或/和未指定的深色混合物。使用一阶相变的凉爽状态方程采用玩具模型，我们还讨论了紧凑型恒星的质量 - 拉迪乌斯关系，并在镜像世界场景中与暗物质混合在一起。
We parameterize the core of compact spherical star configurations by a mass ($m_x$) and a radius ($r_x$) and study the resulting admissible areas in the total-mass vs. total-radius plane. The employed fiducial equation-of-state models of the corona at radii $r \ge r_x$ and pressures $p \le p_x = p(r = r_x)$ are that (i) of constant sound velocity and (ii) a proxy of DY$Δ$ DD-ME2 provided by Buchdahl's exactly solvable ansatz. The core ($r < r_x$) may contain any type of material, e.g. Standard-Model matter with unspecified equation of state or/and an unspecified Dark-Matter admixture. Employing a toy model for the cool equation of state with first-order phase transition we discuss also the mass-radius relation of compact stars with an admixture of Dark Matter in a Mirror-World scenario.
