220 citations · 1.1k across the 28 of their papers we have counts for
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Distinguishing Brans-Dicke-Kerr type naked singularities and black holes with their thin disk electromagnetic radiation properties
Shahab Shahidi, Tiberiu Harko, Zoltán Kovács
The possible existence of naked singularities, hypothetical astrophysical objects, characterized by a gravitational singularity without an event horizon is still an open problem in…
Reply to "Comment on 'Can accretion disk properties observationally distinguish black holes from naked singularities?'"
Zoltán Kovács, Tiberiu Harko, Shahab Shahidi
In the Comment on "Can accretion disk properties observationally distinguish black holes from naked singularities?", by Bertrand Chauvineau, Phys. Rev. D {\bf 98}, 088501 (2018), t…
Accretion processes in magnetically and tidally perturbed Schwarzschild black holes
Zoltán Kovács, László Árpád Gergely, Mátyás Vasúth
We study the accretion process in the region of the Preston-Poisson space-time describing a Schwarzschild black hole perturbed by asymptotically uniform magnetic field and axisymme…
Thin accretion disk signatures of slowly rotating black holes in Hořava gravity
Tiberiu Harko, Zoltán Kovács, Francisco S. N. Lobo
In the present work, we consider the possibility of observationally testing Hořava gravity by using the accretion disk properties around slowly rotating black holes of the Kehagias…
Solar System tests of Hořava-Lifshitz black holes
Francisco S. N. Lobo, Tiberiu Harko, Zoltán Kovács
In the present paper we consider the possibility of observationally testing Horava gravity at the scale of the Solar System, by considering the classical tests of general relativit…
Thin accretion disk signatures in dynamical Chern-Simons modified gravity
Tiberiu Harko, Zoltán Kovács, Francisco S. N. Lobo
A promising extension of general relativity is Chern-Simons (CS) modified gravity, in which the Einstein-Hilbert action is modified by adding a parity-violating CS term, which coup…