387 citations
- Universidade de São PauloBR28 papers
- Institute of Problems of Mechanical EngineeringRU24 papers
- National Research Tomsk State UniversityRU24 papers
- P.N. Lebedev Physical Institute of the Russian Academy of SciencesRU21 papers
- Russian Academy of SciencesRU19 papers
- Pulkovo ObservatoryRU16 papers
- Kazan Federal UniversityRU13 papers
- Institute of AstronomyRU11 papers
- N.N. Krasovskii Institute of Mathematics and Mechanics of the Ural Branch of the Russian Academy of SciencesRU10 papers
- Centre National de la Recherche ScientifiqueFR8 papers
- Uppsala UniversitySE8 papers
- Eastern Mediterranean UniversityCY7 papers
Showing 2023 · gr-qcShow all
3 papers · 2 filters
gr-qc2023★ 19 cited
Dynamical Photon Spheres in Charged Black Holes and Naked Singularities
Yaghoub Heydarzade, Vitalii Vertogradov
To understand the nature of a black hole shadow in dynamical spacetimes, we construct an analytical model of a dynamical photon sphere in the context of the Bonnor-Vaidya spacetime…
gr-qc2023
Can the energy of a particle be negative in the absence of external fields?
A. A. Grib, Yu. V. Pavlov
We study the question of conditions for the existence of negative-energy states of particles in the absence of external fields in inertial and noninertial frames of reference. We s…
gr-qc2023★ 27 cited
Hairy Kiselev Black Hole Solutions
Yaghoub Heydarzade, Maxim Misyura, Vitalii Vertogradov
In the realm of astrophysics, black holes exist within nonvacuum cosmological backgrounds, making it crucial to investigate how these backgrounds influence the properties of black…