Plebanski-Demianski goes NUTs (to remove the Misner string)

Understand

We present a general procedure, based on the Ehlers transformation of the Ernst equations, to add the gravitomagnetic mass to the whole Plebanski-Demianski family of solutions.

• We can efficiently generate a large class of accelerating black holes, such as Reissner-Nordstrom or Kerr-Newman, endowed with the NUT parameter.
• The full rotating version carries a couple of independent NUT charges, one associated to the black hole and the other to the accelerating Rindler background.
• The two NUT parameters can be coupled to remove the axial irregularity which causes the Misner string, still remaining with a Lorentzian spacetime, without the need to impose periodic time.