99 citations · 110 across the 3 of their papers we have counts for
3 papers
gr-qc2017★ 99 cited
Analytical calculation of black hole spin using deformation of the shadow
O. Yu. Tsupko
We succeed to find compact analytical expressions which allow to easily extract the black hole spin from observations of its shadow, without need to construct or model the entire c…
gr-qc2015★ 4 cited
Regular and chaotic dynamics of non-spherical bodies. Zeldovich's pancakes and emission of very long gravitational waves
G. S. Bisnovatyi-Kogan, O. Yu. Tsupko
In this paper we review a recently developed approximate method for investigation of dynamics of compressible ellipsoidal figures. Collapse and subsequent behaviour are described b…
gr-qc2015★ 7 cited
Gravitational Lensing in Plasmic Medium
G. S. Bisnovatyi-Kogan, O. Yu. Tsupko
The influence of plasma on different effects of gravitational lensing is reviewed. Using the Hamiltonian approach for geometrical optics in a medium in the presence of gravity, an…