论文标题
常规黑洞的阴影，渐近minkowski核心
The shadow of regular black holes with asymptotically Minkowski core
论文作者
论文摘要
我们通过一种新的常规黑洞来研究阴影，其特征是minkowski核心和亚planckian曲率。首先，我们用球形对称性将度量扩展到旋转的Kerr样黑洞的一个，并在黑洞的地平线附近带有圆形轨道，然后绘制具有偏差参数不同值的黑色孔的阴影。发现阴影的大小随偏差参数的增加而缩小，而阴影的形状变得更加变形。特别是，通过与Bardeen Black Hole和Hayward Black Hole的阴影具有相同的参数值相比，我们发现，与De Sitter Core相比，具有Minkowski Core的黑洞的阴影比De Sitter Core具有更大的变形，这可能提供了一种策略，该策略可以在未来通过天文学分别通过天文学的核心来区分这两种常规的黑洞，以不同的核心。
We investigate the shadow cast by a sort of new regular black holes which are characterized by an asymptotically Minkowski core and the Sub-Planckian curvature. Firstly, we extend the metric with spherical symmetry to the one of rotating Kerr-like black holes and derive the null geodesics with circular orbit near the horizon of the black hole, and then plot the shadow of black holes with different values of the deviation parameter. It is found that the size of the shadow shrinks with the increase of the deviation parameter, while the shape of the shadow becomes more deformed. In particular, by comparing with the shadow of Bardeen black hole and Hayward black hole with the same values of parameters, we find that in general the shadow of black holes with Minkowski core has a larger deformation than that with de Sitter core, which potentially provides a strategy to distinguish these two sorts of regular black holes with different cores by astronomical observation in future.
