Letter: Parametrization of the KerrNUT Solution
Abstract
The dragging of the KerrNUT solution does not tend to zero at infinity. To modify this solution in order to produce a good asymptotic behaviour we transform it by introducing two further parameters with the aid of a SU(1,1) transformation followed by a unitary transformation. By imposing a certain relation between these parameters we obtain a new solution with a good asymptotic behaviour for any value of l, the NUT parameter. The new solution corresponds to a parametrized Kerr solution and we show that l is linked to the form of its ergosphere.
 Publication:

General Relativity and Gravitation
 Pub Date:
 September 2004
 DOI:
 10.1023/B:GERG.0000038632.88818.4f
 Bibcode:
 2004GReGr..36.2175G
 Keywords:

 Black hole;
 Einstein equation;
 rotation