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@article{29890,
author = {Pugliese, Daniela and Stuchlík, Zdeněk},
article_number = {2},
doi = {http://dx.doi.org/10.3847/1538-4365/aa68e6},
keywords = {accretion; accretion disks; black hole physics; hydrodynamics},
language = {eng},
issn = {0067-0049},
journal = {Astrophysical Journal Supplement Series},
title = {Ringed Accretion Disks: Evolution of Double Toroidal Configurations},
url = {http://iopscience.iop.org/article/10.3847/1538-4365/aa68e6/meta},
volume = {229},
year = {2017}
}
TY - JOUR
ID - 29890
AU - Pugliese, Daniela - Stuchlík, Zdeněk
PY - 2017
TI - Ringed Accretion Disks: Evolution of Double Toroidal Configurations
JF - Astrophysical Journal Supplement Series
VL - 229
IS - 2
SP - „40-1“-„40-28“
EP - „40-1“-„40-28“
SN - 00670049
KW - accretion
KW - accretion disks
KW - black hole physics
KW - hydrodynamics
UR - http://iopscience.iop.org/article/10.3847/1538-4365/aa68e6/meta
L2 - http://iopscience.iop.org/article/10.3847/1538-4365/aa68e6/meta
N2 - We investigate ringed accretion disks composed of two tori (rings) orbiting on the equatorial plane of a central supermassive Kerr black hole. We discuss the emergence of the instability phases of each ring of the macro-configuration (ringed disk) according to the Paczynski violation of mechanical equilibrium. In the full general relativistic treatment, we consider the effects of the geometry of the Kerr spacetimes relevant to the characterization of the evolution of these configurations. The discussion of ring stability in different spacetimes enables us to identify particular classes of central Kerr attractors depending on their dimensionless spin. As a result of this analysis, we set constraints on the evolutionary schemes of the ringed disks relative to the torus morphology and on their rotation relative to the central black hole and to each other. The dynamics of the unstable phases of this system is significant for the high-energy phenomena related to accretion onto supermassive black holes in active galactic nuclei and the extremely energetic phenomena in quasars, which could be observed in their X-ray emission.
ER -
PUGLIESE, Daniela a Zdeněk STUCHLÍK. Ringed Accretion Disks: Evolution of Double Toroidal Configurations. \textit{Astrophysical Journal Supplement Series}. 2017, roč.~229, č.~2, s.~„40-1“-„40-28“, 28 s. ISSN~0067-0049. Dostupné z: https://dx.doi.org/10.3847/1538-4365/aa68e6.
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