论文标题
辐射引力塌陷，各向异性的压力和散装粘度
Radiant gravitational collapse with anisotropy in pressures and bulk viscosity
论文作者
论文摘要
我们对一个紧凑的辐射恒星进行建模，该恒星从特定的初始静态构型从重力崩溃直至变成黑洞。恒星由带压力，大量粘度的流体组成，除了径向热流。提出了具有时间依赖性的爱因斯坦场方程的解决方案，以研究物理量的动态演变，例如质量能函数，无穷大的观察者观察到的光度和热流量。我们检查了初始静态配置的可接受性条件，以获得一系列质量与拉迪乌斯比率，在该比率上，所呈现的恒星模型在物理上是合理的。分析了动态情况的能量条件，以确保模型由在静态构型获得的质量与拉迪物比的物理上可接受的液体组成，或者是否在崩溃期间进行修改。
We model a compact radiant star that undergoes gravitational collapse from a certain initial static configuration until it becomes a black hole. The star consists of a fluid with anisotropy in pressures, bulk viscosity, in addition to the radial heat flow. A solution of Einstein's field equations with temporal dependence was presented to study the dynamic evolution of physical quantities, such as the mass-energy function, the luminosity seen by an observer at infinity and the heat flow. We checked the acceptability conditions of the initial static configuration to obtain a range of mass-to-radius ratio in which the presented star model is physically reasonable. The energy conditions were analyzed for the dynamic case, in order to guarantee that the model is composed of a physically acceptable fluid within the range of the mass-to-radius ratio obtained for the static configuration or if they will be modified during the collapse
