论文标题
Kerr黑洞时空的光子逃生的完整分类
Complete classification of photon escape in the Kerr black hole spacetime
论文作者
论文摘要
我们考虑从Kerr Black Holofon的附近发出的光子逃脱到无穷大的必要条件。径向运动的方程式确定了光子达到无穷大的必要条件，并且运动角度方程进一步限制了允许的光子运动区域。与赤道平面的发射不同，当发射点的初始极角是任意的时，后者的限制对于光子逃逸至关重要。我们提供了一个可视化工具来分析这两个条件并展示了揭示光子逃逸的过程。最后，我们完全确定了光子可以逃脱的二维冲击参数空间。
We consider necessary and sufficient conditions for photons emitted from the vicinity of a Kerr black hole horizon to escape to infinity. The radial equation of motion determines necessary conditions for photons to reach infinity, and the polar angle equation of motion further restricts the allowed region of photon motion. Unlike emission from the equatorial plane, the latter restrictions are crucial for photon escape when the initial polar angle of the emission point is arbitrary. We provide a visualization tool to analyze these two conditions and demonstrate a procedure for revealing photon escape. Finally, we completely identify the two-dimensional impact parameter space in which photons can escape.
