A stationary vacuum solution dual to the Kerr solution

Abstract

We present a stationary axially symmetric two parameter vacuum solution which could be considered as ``dual'' to the Kerr solution. It is obtained by removing the mass parameter from the function of the radial coordinate and introducing a dimensionless parameter in the function of the angle coordinate in the metric functions. It turns out that it is in fact the massless limit of the Kerr - NUT solution.

Latex, 4 pages, minor modifications in title and discussion. Accepted in Mod. Phys. Lett. A

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