Detailed Information on Publication Record
2022
Lense-Thirring effect on accretion flow from counter-rotating tori
PUGLIESE, Daniela and Zdeněk STUCHLÍKBasic information
Original name
Lense-Thirring effect on accretion flow from counter-rotating tori
Authors
PUGLIESE, Daniela (380 Italy, belonging to the institution) and Zdeněk STUCHLÍK (203 Czech Republic, belonging to the institution)
Edition
Monthly Notices of the Royal Astronomical Society, 2022, 0035-8711
Other information
Language
English
Type of outcome
Článek v odborném periodiku
Field of Study
10308 Astronomy
Country of publisher
United Kingdom of Great Britain and Northern Ireland
Confidentiality degree
není předmětem státního či obchodního tajemství
References:
RIV identification code
RIV/47813059:19630/22:A0000195
Organization unit
Institute of physics in Opava
UT WoS
000783960400004
Keywords in English
accretion; accretion discs; black hole physics; hydrodynamics; MHD; galaxies: active; galaxies: jets
Tags
International impact, Reviewed
Změněno: 27/1/2023 09:50, Mgr. Pavlína Jalůvková
Abstract
V originále
We study the accretion flow from a counter-rotating torus orbiting a central Kerr black hole (BH). We characterize the flow properties at the turning point of the accreting matter flow from the orbiting torus, defined by the condition u(phi) = 0 on the flow toroidal velocity. The counter-rotating accretion flow and jet-like flow turning point location along BH rotational axis is given. Some properties of the counter-rotating flow thickness and counter-rotating tori energetics are studied. The maximum amount of matter swallowed by the BH from the counter-rotating tori is determined by the background properties. The fast spinning BH energetics depends mostly on BH spin rather than on the properties of the counter-rotating fluids or the tori masses. The turning point is located in a narrow orbital corona (spherical shell), for photons and matter flow constituents, surrounding the BH stationary limit (outer ergosurface), depending on the BH spin-mass ratio and the fluid initial momentum only. The turning corona for jet-like flow has larger thickness, it is separated from the torus flow turning corona and it is closer to the BH stationary limit. Turning points of matter accreting from torus and from jets are independent explicitly of the details of the accretion and tori model. The turning corona could be observable due to an increase of flow luminosity and temperature. The corona is larger on the BH equatorial plane, where it is the farthest from the central attractor, and narrower on the BH poles.