Gravitational multi-NUT solitons, Komar masses and charges
arXiv:0809.5218 · doi:10.1007/s10714-008-0720-7
Abstract
Generalising expressions given by Komar, we give precise definitions of gravitational mass and solitonic NUT charge and we apply these to the description of a class of Minkowski-signature multi-Taub-NUT solutions without rod singularities. A Wick rotation then yields the corresponding class of Euclidean-signature gravitational multi-instantons.
Some references added