Kerr Metric: Removing Singularity via Coordinate Transformation

[Arman777]

We know that, the singularity of the Schwarzschild metric at $r = 2M$ can be removable via coordinate transformation to Kruskal-Szekers . Can we apply a similar argument to the Kerr metric? If so, what's the name of this coordinate system?

 

[PeterDonis]

See this thread:

https://www.physicsforums.com/threads/kruskal-szekeres-coordinates-for-kerr-metric.949669/