Other formats:
BibTeX
LaTeX
RIS
@article{36735,
author = {Pugliese, Daniela and Stuchlík, Zdeněk},
article_number = {4},
doi = {http://dx.doi.org/10.1140/epjc/s10052-019-6786-4},
keywords = {accretion disks; Kerr black hole; stability; X-ray emission},
language = {eng},
issn = {1434-6044},
journal = {European Physical Journal C},
title = {RADs energetics and constraints on emerging tori collisions around super-massive Kerr black holes},
url = {https://link.springer.com/article/10.1140%2Fepjc%2Fs10052-019-6786-4},
volume = {79},
year = {2019}
}
TY - JOUR
ID - 36735
AU - Pugliese, Daniela - Stuchlík, Zdeněk
PY - 2019
TI - RADs energetics and constraints on emerging tori collisions around super-massive Kerr black holes
JF - European Physical Journal C
VL - 79
IS - 4
SP - "288-1"-"288-33"
EP - "288-1"-"288-33"
SN - 14346044
KW - accretion disks
KW - Kerr black hole
KW - stability
KW - X-ray emission
UR - https://link.springer.com/article/10.1140%2Fepjc%2Fs10052-019-6786-4
L2 - https://link.springer.com/article/10.1140%2Fepjc%2Fs10052-019-6786-4
N2 - We provide constraints on possible configurations and interactions of two coplanar tori orbiting a central Kerr black hole (BH), in dependence on its dimensionless spin. The two-tori configurations can be directly linked to the current models featuring the obscuration of galactic BH X-ray emission. The emergence of each torus instability phases is discussed and tori collision has been also investigated. The first simple evaluation of the center-of-mass energy proves that collision-energy-efficiency increases with the dimensionless BH spin. We explore the phenomenological aspects of the corotating and counterrotating tori by analyzing properties of the orbiting toroidal configurations related to the fluid enthalpy flux, the mass-flux, the mass-accretion-rates, and the cusp luminosity in the two cases of corotating and counterrotating fluids in dependence on the SMBH spin. The analysis resulted ultimately in a comparative investigation of the properties of corotating versus counterrotating tori, demonstrating that two accretion tori can orbit around the central Kerr attractor only under very specific conditions. Our results also demonstrate that the dynamics of the unstable phases of these double tori systems is significant for the high energy phenomena which could be observable in the X-ray emission and extremely energetic phenomena in active galactic nuclei and quasar.
ER -
PUGLIESE, Daniela and Zdeněk STUCHLÍK. RADs energetics and constraints on emerging tori collisions around super-massive Kerr black holes. \textit{European Physical Journal C}. 2019, vol.~79, No~4, p.~''288-1''-''288-33'', 33 pp. ISSN~1434-6044. Available from: https://dx.doi.org/10.1140/epjc/s10052-019-6786-4.
|
