26 citations · 37 across the 9 of their papers we have counts for
9 papers
Imprints of core/cusp dark matter distributions on black hole signatures in galaxies
Hassan Hassanabadi, Che-Yu Chen, Soroush Zare +1
In galactic environments, a host dark matter (DM) halo can imprint weak but coherent corrections on black hole (BH) strong-field observables. We construct an exact family of static…
Gravitational light deflection and shadows in a warm plasma
Barbora Bezděková, Volker Perlick
Analytical studies of light bending in a dispersive medium near compact objects, e.g., black holes or neutron stars, are most challenged by a suitable definition of the medium. The…
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…
Lensing, Shadow and Photon Rings in a Magnetized Black Hole Spacetime
Muhammad Haider Khan, Volker Perlick
We analyze gravitational lensing, in particular the shadow and photon rings, in the Ernst spacetime, also known as the Schwarzschild-Melvin spacetime, which describes a Schwarzschi…
Waves in Bopp-Landé-Thomas-Podolsky generalized electrodynamics
Altin Shala, Volker Perlick
We investigate the feasibility of probing Bopp-Landé-Thomas-Podolsky generalized electrodynamics with traveling and standing wave experiments. We consider wave propagation in vacuu…
Characterisation of circular light rays in a plasma
Volker Perlick
It is the purpose of this paper to give a characterisation of circular light rays in a plasma on an axially symmetric and stationary spacetime. We restrict to the case of an unmagn…
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…
Light propagation in a plasma on Kerr spacetime. II. Plasma imprint on photon orbits
Volker Perlick, Oleg Yu. Tsupko
In this paper, light propagation in a pressure-free non-magnetized plasma on Kerr spacetime is considered, which is a continuation of our previous study [Phys. Rev. D 95, 104003 (2…
Potentials for general-relativistic geodesy
Claus Laemmerzahl, Volker Perlick
Geodesy in a Newtonian framework is based on the Newtonian gravitational potential. The general-relativistic gravitational field, however, is not fully determined by a single poten…