A stationary q-metric

We present a stationary generalization of the static q-metric, the simplest generalization of the Schwarzschild solution that contains a quadrupole parameter. It possesses three independent parameters that are related to the mass, quadrupole moment and angular momentum. We investigate the geometric and physical properties of this exact solution of Einstein’s vacuum equations, and show that it can be used to describe the exterior gravitational field of rotating, axially symmetric, compact objects.

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