Detailed Information on Publication Record
2024
Inversion points of the accretion flows onto super-spinning Kerr attractors
PUGLIESE, Daniela and Zdeněk STUCHLÍKBasic information
Original name
Inversion points of the accretion flows onto super-spinning Kerr attractors
Authors
PUGLIESE, Daniela (380 Italy, belonging to the institution) and Zdeněk STUCHLÍK (203 Czech Republic, belonging to the institution)
Edition
European Physical Journal C, New York (USA), SPRINGER, 2024, 1434-6044
Other information
Language
English
Type of outcome
Článek v odborném periodiku
Field of Study
10308 Astronomy
Country of publisher
United States of America
Confidentiality degree
není předmětem státního či obchodního tajemství
References:
Impact factor
Impact factor: 4.400 in 2022
Organization unit
Institute of physics in Opava
UT WoS
001168082000001
Keywords in English
accretion flows;Kerr super-spinning attractor;spin;orbiting fluids;corona
Tags
Tags
International impact, Reviewed
Změněno: 16/1/2025 11:58, Mgr. Pavlína Jalůvková
Abstract
V originále
We study the accretion flows towards a central Kerr super-spinning attractor, discussing the formation of the flow inversion points, defined by condition uϕ=0 on the particles flow axial velocity. We locate two closed surfaces, defining inversion coronas (spherical shells), surrounding the central attractor. The coronas analysis highlights observational aspects distinguishing the central attractors and providing indications on their spin and the orbiting fluids. The inversion corona is a closed region, generally of small extension and thickness, which is for the counter-rotating flows of the order of ≲1.4M (central attractor mass) on the vertical rotational axis. There are no co-rotating inversion points (from co-rotating flows). The results point to strong signatures of the Kerr super-spinars, provided in both accretion and jet flows. With very narrow thickness, and varying little with the fluid initial conditions and the emission process details, inversion coronas can have remarkable observational significance for primordial Kerr super-spinars predicted by string theory. The corona region closest to the central attractor is the most observably recognizable and active part, distinguishing black holes solutions from super-spinars. Our analysis expounds the Lense–Thirring effects and repulsive gravity effects in the super-spinning ergoregions.