Metric for two arbitrary Kerr sources
arXiv:1806.10408 · doi:10.1016/j.physletb.2019.05.027
Abstract
The full metric describing a stationary axisymmetric system of two arbitrary Kerr sources, black holes or hyperextreme objects, located on the symmetry axis and kept apart in equilibrium by a massless strut is presented in a concise explicit form involving five physical parameters. The binary system composed of a Schwarzschild black hole and a Kerr source is a special case not covered by the general formulas, and we elaborate the metric for this physically interesting configuration too.
12 pages, 1 figure