20 citations · 75 across the 9 of their papers we have counts for
9 papers
On the Kalb-Ramond modified Lorentz violating hairy black holes and Thorne's hoop conjecture
K. K. Nandi, R. N. Izmailov, R. Kh. Karimov +1
Recently, a class of static spherically symmetric power law corrected Lorentz violating (LV) Schwarzschild black holes in the Kalb-Ramond model have been derived and studied in the…
Gravitational time advancement effect in Bumblebee gravity for Earth bound systems
G. Y. Tuleganova, R. Kh. Karimov, R. N. Izmailov +3
This paper is a novel application of the new effect of gravitational time advancement or \textit{negative} time delay, first predicted for static black holes (spin ), that can…
Observable strong field effects of extra spacetime dimension in the braneworld black hole
K. K. Nandi, R. N. Izmailov, R. Kh. Karimov +1
Inspired by the string theory, the braneworld picture introduces extra dimensions beyond the four that may have observable non-trivial effects in short distance (strong field) grav…
Can accretion properties distinguish between a naked singularity, wormhole and black hole?
R. Kh. Karimov, R. N. Izmailov, A. A. Potapov +1
We first advance a mathematical novelty that the three geometrically and topologically distinct objects mentioned in the title can be exactly obtained from the Jordan frame vacuum…
On the Hoop conjecture in Einstein gravity coupled to nonlinear electrodynamics
K. K. Nandi, R. N. Izmailov, G. M. Garipova +2
The famous hoop conjecture by Thorne has been claimed to be\ violated in curved spacetimes coupled to linear electrodynamics. Hod \cite{Hod:2018} has recently refuted this claim by…
String effect on the relative time delay in the Kerr-Sen black hole
R. N. Izmailov, R. Kh. Karimov, A. A. Potapov +1
A well known solution of heterotic string theory is the spinning Kerr-Sen black hole (KSBH) characterized by a string parameter . Kerr black hole is recovered at . The purp…
Vacuum Brans-Dicke theory in the Jordan and Einstein frames: can they be distinguished by lensing?
R. N. Izmailov, R. Kh. Karimov, A. A. Potapov +1
Vacuum Brans-Dicke theory can be self-consistently described in two frames, the Jordan frame (JF) and the conformally rescaled Einstein frame (EF), the transformations providing an…
Note on the Schwarzschild-phantom wormhole
Regina Lukmanova, Alina Khaibullina, Ramil Izmailov +3
Recently, it has been shown by Lobo, Parsaei and Riazi (LPR) that phantom energy with could support phantom wormholes. Several classes of such solutions have been de…
Fixing a Parameter of the Galactic Halo: A Mathematical Modelling by Hamiltonian Method
Ruslan Isaev, A. A. Potapov, K. K. Nandi
We illustrate how the mathematical modelling of the equations of motion in terms of autonomous Hamiltonian dynamical system can definitively fix a sign for an otherwise indefinite…