Maxwell, Yang-Mills, Weyl and eikonal fields defined by any null shear-free congruence-valued electric charges ("elementary" for the
Kerr-like congruences), can all be explicitly associated with any
Conformal Kerr-Schild ansatz for all static spherically symmetric spacetimesWe show that all static spherically symmetric spacetimes admit a conformally
Kerr-Schild metric
Motion along polar orbits in the Kerr-Newman spacetimeMotion along polar orbits in the
Kerr-Newman spacetime
Biquaternionic Analysis, Cyclic Quaternionic Fields, and Generalization of the Kerr–Penrose TheoremBiquaternionic Analysis, Cyclic Quaternionic Fields, and Generalization of the
Kerr–Penrose Theorem
Zero mass limit of Kerr spacetime is a wormhole in the literature, the zero mass limit of
Kerr spacetime is not flat Minkowski space but a spacetime whose geometry