| Regions with Cabcd*Cabcd > 0 are shaded, the boundaries being the roots to Cabcd*Cabcd = 0. The diagram holds for all Kerr balck holes in Boyler-Lindquist coordinates (x=r/a, a is not zero). |
| Regions with Cabcd*Cabcd > 0 are shaded, the boundaries being the roots to Cabcd*Cabcd = 0. The diagram holds for all Kerr balck holes in Boyler-Lindquist coordinates (x=r/a, a is not zero). |