论文标题
来自常规黑洞的无质量标量波的吸收和散射
Absorption and scattering of massless scalar wave from Regular Black Holes
论文作者
论文摘要
在这项工作中，我们使用部分波方法从一些众所周知的常规黑洞中研究了无质量标量场的散射和吸收横截面。我们的计算结果表明，参数越大，相关的总吸收横截面最大值越低。与Schwarzschild黑洞相比，在一些常规的黑洞空位中，散射横截面增强了，与此同时，散射宽度在正方向上狭窄。此外，发现关键冲击参数的无效测量学和高频制度中的几何光学值具有相似的变化行为。
In this work, we numerically investigate the scattering and absorption cross section of the massless scalar field from some well-known regular black holes by using the partial wave approach. Our computational results indicate that the larger the parameters, the lower the associated total absorption cross section maxima. When compared to the Schwarzschild black hole, the scattering cross section is enhanced in some regular black hole spacetimes, meanwhile the scattering width is narrow in the forward orientation. Moreover, it is found that the null geodesics of the critical impact parameter and the geometrical optical value in the high frequency regime have similar changing behavior.
