论文标题
在存在扩展宇宙的等离子体存在下旋转黑洞的阴影分析
Shadow analysis for rotating black holes in the presence of plasma for an expanding universe
论文作者
论文摘要
我们探索了Kerr-de Sitter黑洞的阴影结构，其周围有未磁性的无压力等离子体。特定的血浆分布被认为可以分离汉密尔顿 - 雅各比方程并找到光子区域。一个分析公式描述了在地平线以外的任何有限点的观察者中，在扩展的宇宙中的阴影的边界曲线均已得出。我们观察到偏差，通过在存在和不存在等离子体的情况下，在特定点计算曲率半径并计算阴影的直径，从而进一步探索了偏差。
We explore the structure of shadow for a Kerr-de Sitter black hole with a non-magnetized, pressureless plasma surrounding it. Specific plasma distributions are considered to separate the Hamilton-Jacobi equation and find the photon regions. An analytic formula describing the boundary curve of the shadow for such a black hole in an expanding universe for an observer at any finite point outside the horizon is derived. We observe deviations which are further explored by calculating the curvature radius at a particular point for such structures in the presence and absence of plasma and calculate the diameter of the shadow.
