62 citations · 109 across the 10 of their papers we have counts for
10 papers
Precision tests of analytical tail-term approximations for radiation reaction in Schwarzschild spacetime
Bakhtinur Juraev, Arman Tursunov, Zdeněk Stuchlík +2
We investigate the consistency and precision of approximate analytical expressions for the electromagnetic self-force acting on a charged particle in Schwarzschild spacetime endowe…
Electromagnetic radiation-reaction near black holes: orbital widening and the role of the tail
Bakhtinur Juraev, Arman Tursunov, Zdeněk Stuchlík +2
We investigate the orbital evolution of a classical charged particle around a Schwarzschild black hole immersed in an external, uniform magnetic field, taking into full account bot…
Stability of the rotating string loops in Kerr spacetime
Mariia Churilova, Zdeněk Stuchlík
We study stability of the circular string loops rotating in the equatorial plane of Kerr spacetime against equatorial and polar perturbations. We consider motion of such string loo…
Dark matter halos modeled by polytropic spheres influenced by the relict cosmological constant and trapping polytropes forming supermassive black holes
Zdeněk Stuchlík, Jan Novotný, Jan Hladík
We study dark matter halos modeled by general relativistic polytropic spheres in spacetimes with the repulsive cosmological constant representing vacuum energy density, governed by…
Exploring a Novel Feature of Ellis Spacetime: Insights into Scalar Field Dynamics
Bobur Turimov, Akbar Davlataliev, Bobomurat Ahmedov +1
We have studied neutral and charged massive particles dynamics in Ellis spacetime in the presence of the external scalar field. Focusing on the circular motion of massive particles…
Can electromagnetic charge inhabit in Rastall gravity?
Bobir Toshmatov, Zdeněk Stuchlík, Bobomurat Ahmedov
One of the eminent generalizations of theory of general relativity is the Rastall gravity which was {constructed} based on the assumption of the non-conserved energy-momentum tenso…
Extended Tolman III and VII solutions in gravity: Models for neutron stars and supermassive stars
Thomas D. Pappas, Camilo Posada, Zdeněk Stuchlík
In the context of linear gravity, where is the Ricci scalar, is the trace of the energy-momentum tensor, and is a dimensionl…
Supermassive black holes surrounded by dark matter modeled as anisotropic fluid: epicyclic oscillations and their fitting to observed QPOs
Zdeněk Stuchlík, Jaroslav Vrba
Recently introduced exact solution of the Einstein gravity coupled minimally to an anisotropic fluid representing dark matter can well represent supermassive black holes in galacti…
Circular geodesics of naked singularities in the Kehagias-Sfetsos metric of Hořava's gravity
Ronaldo S. S. Vieira, Jan Schee, Włodek Kluźniak +2
We discuss photon and test-particle orbits in the Kehagias-Sfetsos (KS) metric. For any value of the Hořava parameter , there are values of the gravitational mass for which…
Spherically Symmetric Static Configurations of Uniform Density in Spacetimes with a Non-Zero Cosmological Constant
Zdeněk Stuchlík
Interior solutions of Einstein's equations with a non-zero cosmological constant are given for static and spherically symmetric configurations of uniform density. The metric tensor…