3 papers
astro-ph.HE2026
Extreme-Lensing Signatures Revealed by Correlations of Simulated Black-Hole Movies
Barbora BezdÄková, Shahar Hadar, George Wong +1
A black hole's gravitational pull can deflect light rays to an arbitrary degree. As a result, any source fluctuation near the black hole creates multiple lagged images on an observ…
gr-qc2025
Light deflection in axially symmetric stationary spacetimes filled with a moving medium
Christian Pfeifer, Barbora BezdÄková, 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…
gr-qc2024
Deflection of light rays in a moving medium around a spherically symmetric gravitating object
Barbora BezdÄková, 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…