664 citations · 2.5k across the 35 of their papers we have counts for
35 papers
Light deflection in axially symmetric stationary spacetimes filled with a moving medium
Christian Pfeifer, Barbora Bezděková, Oleg Yu. Tsupko
The deflection of light rays near gravitating objects can be influenced not only by gravity itself but also by the surrounding medium. Analytical studies of such effects are possib…
Overlapping of photon rings in black hole imaging
Oleg Yu. Tsupko, Fabio Aratore, Volker Perlick
In this paper, we investigate the overlapping of photon rings - higher-order images of a black hole's luminous environment, concentrated near the shadow boundary and expected to be…
Strong deflection of massive particles in spherically symmetric spacetimes
Fabiano Feleppa, Valerio Bozza, Oleg Yu. Tsupko
Near a gravitating compact object, massive particles traveling along timelike geodesics are gravitationally deflected similarly to light. In this paper, we study the deflection ang…
Strong deflection limit analysis of black hole lensing in inhomogeneous plasma
Fabiano Feleppa, Valerio Bozza, Oleg Yu. Tsupko
This paper investigates gravitational lensing effects in the presence of plasma in the strong deflection limit, which corresponds to light rays circling around a compact object and…
Deflection of light rays in a moving medium around a spherically symmetric gravitating object
Barbora Bezděková, Oleg Yu. Tsupko, Christian Pfeifer
In most analytical studies of light ray propagation in curved spacetimes around a gravitating object surrounded by a medium, it is assumed that the medium is a cold nonmagnetized p…
Constraining spherically symmetric metrics by the gap between photon rings
Fabio Aratore, Oleg Yu. Tsupko, Volker Perlick
Gravitational lensing of luminous matter that surrounds a black hole or some other sufficiently compact object produces an infinite sequence of images. Besides the direct (or prima…