Year: 2024
Type: article
Abstract: Astrophysical fluids subjected to the strong gravity of black holes can form rotating toroidal-like structures known as thick accretion discs. In order to facilitate the study of such structures, we introduce approximate empirical formulae for a relatively simple analytical description of their poloidal cross-sections that are usually described only numerically. Our comparisons of the approximate and exact descriptions of the cross-sections of the structures rotating around Schwarzschild and Kerr central black holes, together with the determination of the associated total masses of these structure, indicate a high degree of accuracy for these introduced formulae.
Source: The European Physical Journal C
Authors: Abylaikhan Tlemissov, Jiří Kovář
Institution: Silesian University in Opava
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: diamond
Funder: Slezská Univerzita v Opavě
Awards: G3119605394, G3790300290, G7238391396
OpenAlex ID: W4403844569