27 citations · 76 across the 14 of their papers we have counts for
15 papers
Uniqueness of the static vacuum asymptotically flat spacetimes with massive particle spheres
Kirill Kobialko, Igor Bogush, Dmitri Gal'tsov
In this paper, we establish that a four-dimensional static vacuum asymptotically flat spacetime containing a massive particle sphere is isometric to the Schwarzschild spacetime. Ou…
Mass formulas for supergravity black holes with string singularities
Igor Bogush, Dmitri Gal'tsov, Gérard Clément
We extend the derivation of mass formulas for stationary axisymmetric asymptotically locally flat solutions with string singularities on the polar axis to general supergravity acti…
Constructing massive particles surfaces in static spacetimes
Igor Bogush, Kirill Kobialko, Dmitri Gal'tsov
The procedure for constructing the massive particle surfaces in static space-times is described in detail and the equivalence of the main results with the results of the geodesic a…
Black hole shadows of massive particles and photons in plasma
Kirill Kobialko, Igor Bogush, Dmitri Gal'tsov
Explicitly covariant analytical expressions are derived that describe the boundaries of shadows cast by massive particles scattered by a gravitating object. This covers scenarios w…
Glued massive particles surfaces
Igor Bogush, Kirill Kobialko, Dmitri Gal'tsov
A novel generalization of photon surfaces to the case of massive charged particles is given for spacetimes with at least one isometry, including stationary ones. A related notion o…
Supergravity -branes with scalar charge
Igor Bogush, Dmitri Gal'tsov
Standard dilatonic supergravity -branes have scalar charges that are not independent parameters, but are determined by the brane tension and Page charges. This feature can be tr…
The geometry of massive particle surfaces
Kirill Kobialko, Igor Bogush, Dmitri Gal'tsov
We propose a generalization of Claudel, Virbhadra, and Ellis photon surfaces to the case of massive charged particles, considering a timelike hypersurface such that any worldline o…
Photon surfaces, shadows and accretion disks in gravity with minimally coupled scalar field
Igor Bogush, Dmitri Gal'tsov, Galin Gyulchev +3
In this article, we conduct a sequential study of possible observable images of black hole simulators described by two recently obtained rotating geometries in Einstein gravity, mi…
Slice-reducible conformal Killing tensors, photon surfaces and shadows
Kirill Kobialko, Igor Bogush, Dmitri Gal'tsov
We generalize our recent method for constructing Killing tensors of the second rank to conformal Killing tensors. The method is intended for foliated spacetimes of arbitrary dimens…
Einstein-Maxwell-Dilaton-Axion mass formulas for black holes with struts and strings
Dmitri Gal'tsov, Gérard Clément, Igor Bogush
Mass formulas are obtained for stationary axisymmetric solutions of the Einstein-Maxwell dilaton-axion theory, which have a regular rod structure on the axis of symmetry. Asymptoti…
Killing tensors in foliated spacetimes and photon surfaces
Kirill Kobialko, Igor Bogush, Dmitri Gal'tsov
We discuss a recently proposed geometric method for constructing a nontrivial Killing tensor of rank two in a foliated spacetime of codimension one that lifts trivial Killing tenso…
Topological defects in superconducting open nanotubes under gradual and abrupt switch-on of the transport current and magnetic field
Igor Bogush, Vladimir M. Fomin
We analyze the dynamics of the order parameter in superconducting open nanotubes under a strong transport current in an external homogeneous magnetic field using the time-dependent…
Killing tensors and photon surfaces in foliated spacetimes
Kirill Kobialko, Igor Bogush, Dmitri Gal'tsov
We present a purely geometric method for constructing a rank two Killing tensor in a spacetime with a codimension one foliation that lifts the trivial Killing tensors from slices t…
Nutty Kaluza-Klein dyons revisited
Igor Bogush, Gérard Clément, Dmitri Gal'tsov +1
We extend the previous analysis of (locally) asymptotically flat solutions of Kaluza-Klein (KK) theory by assuming that the dilaton charge is an independent parameter. This corresp…
Generation of rotating solutions in Einstein-scalar gravity
Igor Bogush, Dmitri Gal'tsov
We revisit the problem of the rotating generalization of the Fisher-Janis-Newman-Winicour solution of the minimal Einstein-scalar theory proving that the two previously proposed so…