The Boyer-Lindquist coordinates for this model give delta equals 0 and rho equals 0 for its two singularities, one of which is a curvature singularity, which produce a critical surface in the shape of an oblate spheroid.
One of the four conserved quantities in this system is known as Carter's constant, after its discoverer. This space's Killing fields consist of two vectors and, extraordinarily, a tensor. The relativistic n-pole moment of this system is given by its mass times the quantity i times the specific angular momentum to the n. This is the simplest spacetime containing a region where all time-like paths are co-rotating. The Boyer-Lindquist coordinates for this model give delta equals 0 and rho equals 0 for its two singularities, one of which is a curvature singularity, which produce a critical surface in the shape of an oblate spheroid. This system allows for the possibility of energy extraction from its ergosphere via the Penrose process. A degenerate case of this model in which the angular momentum is 0 is the Schwarzschild model. For 10 points, name this model that describes the geometry of spacetime around a rotating black hole which, when it is charged, is co-named for Newman.
One of the four conserved quantities in this system is known as Carter's constant, after its discoverer.
Kerr-Newman black hole [or Kerr-Newman metric; or Kerr-Newman spacetime; or Kerr-Newman vacuum]