A Kerr Metric: Removing Singularity via Coordinate Transformation

Click For Summary
The discussion centers on whether the singularity of the Kerr metric can be removed through a coordinate transformation, similar to the Schwarzschild metric's transformation to Kruskal-Szekeres coordinates. Participants explore the potential existence of a specific coordinate system that could achieve this for the Kerr metric. The conversation highlights the complexities involved in applying coordinate transformations to rotating black holes. Key terms and concepts related to the Kerr metric and singularities are examined. The thread ultimately seeks to clarify the applicability of these transformations in the context of general relativity.
Arman777
Insights Author
Gold Member
Messages
2,163
Reaction score
191
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?
 
Physics news on Phys.org
The Poynting vector is a definition, that is supposed to represent the energy flow at each point. Unfortunately, the only observable effect caused by the Poynting vector is through the energy variation in a volume subject to an energy flux through its surface, that is, the Poynting theorem. As a curl could be added to the Poynting vector without changing the Poynting theorem, it can not be decided by EM only that this should be the actual flow of energy at each point. Feynman, commenting...