PUGLIESE, Daniela and Zdeněk STUCHLÍK. Tori sequences as remnants of multiple accreting periods of Kerr SMBHs. Journal of High Energy Astrophysics. 2018, vol. 17, Marz, p. 1-37. ISSN 2214-4048. Available from: https://dx.doi.org/10.1016/j.jheap.2017.11.001.
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Basic information
Original name Tori sequences as remnants of multiple accreting periods of Kerr SMBHs
Authors PUGLIESE, Daniela (380 Italy, guarantor, belonging to the institution) and Zdeněk STUCHLÍK (203 Czech Republic, belonging to the institution).
Edition Journal of High Energy Astrophysics, 2018, 2214-4048.
Other information
Original language English
Type of outcome Article in a journal
Field of Study 10308 Astronomy
Country of publisher Netherlands
Confidentiality degree is not subject to a state or trade secret
WWW URL
RIV identification code RIV/47813059:19240/18:A0000274
Organization unit Faculty of Philosophy and Science in Opava
Doi http://dx.doi.org/10.1016/j.jheap.2017.11.001
UT WoS 000425895700001
Keywords in English accretion disks; accretion; jets; black hole physics; hydrodynamics
Tags International impact, Reviewed
Links GB14-37086G, research and development project. GJ16-03564Y, research and development project.
Changed by Changed by: RNDr. Jan Hladík, Ph.D., učo 25379. Changed: 4/4/2019 12:50.
Abstract
Super-massive black holes (SMBHs) hosted in active galactic nuclei (AGNs) can be characterized by multi-accreting periods as the attractors interact with the environment during their life-time. These multi-accretion episodes should leave traces in the matter orbiting the attractor. Counterrotating and even misaligned structures orbiting around the SMBHs would be consequences of these episodes. Our task in this work is to consider situations where such accretions occur and to trace their remnants represented by several toroidal accreting fluids, corotating or counterrotating relative to the central Kerr attractor, and created in various regimes during the evolution of matter configurations around SMBHs. We focus particularly on the emergence of matter instabilities, i.e., tori collisions, accretion onto the central Kerr black hole, or creation of jet-like structures (proto-jets). Each orbiting configuration is governed by the general relativistic hydrodynamic Boyer condition of equilibrium configurations of rotating perfect fluid. We prove that sequences of configurations and hot points, where an instability occurs, characterize the Kerr SMBHs, depending mainly on their spin-mass ratios. The occurrence of tori accretion or collision are strongly constrained by the fluid rotation with respect to the central black hole and the relative rotation with respect to each other. Our investigation provides characteristic of attractors where traces of multi-accreting episodes can be found and observed.
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