78 citations · 130 across the 9 of their papers we have counts for
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On electromagnetic energy in Bardeen and ABG spacetimes
V. S. Manko, E. Ruiz
We demonstrate that the total energy of electromagnetic field in the Bardeen and Ayón-Beato-García singularity-free models is equal to the mass parameter , being therefore indep…
Metric of two balancing Kerr particles in physical parametrization
V. S. Manko, E. Ruiz
The present paper aims at elaborating a completely physical representation for the general 4-parameter family of the extended double-Kerr spacetimes describing two spinning sources…
Stationary configurations of two extreme black holes obtainable from the Kinnersley-Chitre solution
V. S. Manko, E. Ruiz, M. B. Sadovnikova
Stationary axisymmetric systems of two extreme Kerr sources separated by a massless strut, which arise as subfamilies of the well-known Kinnersley-Chitre solution, are studied. We…
Remarks on the mass-angular momentum relations for two extreme Kerr sources in equilibrium
I. Cabrera-Munguia, V. S. Manko, E. Ruiz
The general analysis of the relations between masses and angular momenta in the configurations composed of two balancing extremal Kerr particles is made on the basis of two exact s…
A combined Majumdar-Papapetrou-Bonnor field as extreme limit of the double-Reissner-Nordstrom solution
I. Cabrera-Munguia, V. S. Manko, E. Ruiz
The general extreme limit of the double-Reissner-Nordstrom solution is worked out in explicit analytical form involving prolate spheroidal coordinates. We name it the combined Maju…
Schwarzschild black hole levitating in the hyperextreme Kerr field
V. S. Manko, E. Ruiz
The equilibrium configurations between a Schwarzschild black hole and a hyperextreme Kerr object are shown to be described by a three-parameter subfamily of the extended double-Ker…
Formation of a Kerr black hole from two stringy NUT objects
V. S. Manko, E. D. Rodchenko, E. Ruiz +1
In this paper we show that an isolated Kerr black hole can be interpreted as arising from a pair of identical counter-rotating NUT objects placed on the symmetry axis at an appropr…
Physical interpretation of NUT solution
V. S. Manko, E. Ruiz
We show that the well-known NUT solution can be correctly interpreted as describing the exterior field of two counter-rotating semi-infinite sources possessing negative masses and…
How can exact and approximate solutions of Einstein's field equations be compared?
V. S. Manko, E. Ruiz
The problem of comparison of the stationary axisymmetric vacuum solutions obtained within the framework of exact and approximate approaches for the description of the same general…