39 citations · 39 across the 3 of their papers we have counts for
6 papers
Photon regions in stationary axisymmetric spacetimes and umbilic conditions
Kirill Kobialko, Dmitri Gal'tsov
We present the fundamentals of the recently proposed geometric description of photon regions in terms of foliation into fundamental photon hypersurfaces, which satisfies the umbili…
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…
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…
Photon regions and umbilic conditions in stationary axisymmetric spacetimes
K. V. Kobialko, D. V. Gal'tsov
Photon region (PR) in the strong gravitational field is defined as a compact region where photons can travel endlessly without going to infinity or disappearing at the event horizo…
Photon trapping in static axially symmetric spacetime
D. V. Gal'tsov, K. V. Kobialko
Recently, several new characteristics have been introduced to describe null geodesic structure of strong gravitational field, such as photon regions, transversely trapping surfaces…
Completing characterization of photon orbits in Kerr and Kerr-Newman metrics
D. V. Gal'tsov, K. V. Kobialko
Recently, several new characteristics have been introduced to describe null geodesic structure of stationary spacetimes, such as photon regions (PR) and transversely trapping surfa…