Penrose Process in Kerr-Taub-NUT Spacetime
  Penrose process on rotational energy extraction of the black hole in the Kerr-Taub-NUT spacetime is studied. It has been shown that for the radial motion of particles NUT parameter slightly shifts the shape of the effective potential down. The dependence of the extracted energy from compact object on NUT parameter has been found. 
A.A. Abdujabbarov, B.J. Ahmedov, S.R. Shaymatov, A.S. Rakhmatov
astro-ph.SR