2017/10/31 by Y. Heydarzade, F. Darabi
Physics and Astronomy · #Astrophysical Phenomena and Observations #Black Holes and Theoretical Physics #Black hole (networking) #Cosmology #Field (mathematics) #Focus (optics) #Geodesic #Gravitational singularity #Noncommutative and Quantum Gravity Theories #Rotating black hole #Schwarzschild radius #gr-qc
paper · pdf · doi:10.1140/epjc/s10052-018-6041-4
published as Eur. Phys. J. C, (2018), 78:582 · 37 pages, 31 figures
openalex publication_date 2018/07/01 · openalex created_date 2018/08/03 · arxiv created 2018/12/10 · arxiv updated 2018/12/11 · openalex updated_date 2026/08/05
In the present work, we study the general surrounded Vaidya solution by the various cosmological fields and its nature describing the possibility of the formation of naked singularities or black holes. Motivated by the fact that real astrophysical black holes as non-stationary and non-isolated objects are living in non-empty backgrounds, we focus on the black hole subclasses of this general solution describing a dynamical evaporating-accreting black holes in the dynamical cosmological backgrounds of dust, radiation, quintessence, cosmological constant-like and phantom fields, the so called “surrounded Vaidya black hole”. Then, we analyze the timelike geodesics associated with the obtained surrounded black holes and we find that some new correction terms arise relative to the case of Schwarzschild black hole. Also, we address some of the subclasses of the obtained surrounded black hole solution for both dynamical and stationary limits. Moreover, we classify the obtained solutions according to their behaviors under imposing the positive energy condition and discuss how this condition imposes some severe and important restrictions on the black hole and its background field dynamics.