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@article{42704,
author = {Kotrlová, Andrea and Stuchlík, Zdeněk and Török, Gabriel},
article_location = {PL - Polská republika},
article_number = {2},
keywords = {Accretion; accretion disks; X-rays: general; Black hole physics; X-rays: individuals: Sgr A*},
language = {eng},
issn = {0001-5237},
journal = {Acta Astronomica},
title = {Multi-Resonance Orbital Model Applied to High-Frequency Quasi-Periodic Oscillations Observed in Sgr A*},
volume = {63},
year = {2013}
}
TY - JOUR
ID - 42704
AU - Kotrlová, Andrea - Stuchlík, Zdeněk - Török, Gabriel
PY - 2013
TI - Multi-Resonance Orbital Model Applied to High-Frequency Quasi-Periodic Oscillations Observed in Sgr A*
JF - Acta Astronomica
VL - 63
IS - 2
SP - 275-292
EP - 275-292
SN - 00015237
KW - Accretion
KW - accretion disks
KW - X-rays: general
KW - Black hole physics
KW - X-rays: individuals: Sgr A*
N2 - The multi-resonance orbital model of high-frequency quasi-periodic oscillations (HF QPOs) enables precise determination of the black hole dimensionless spin a if observed set of oscillations demonstrates three (or more) commensurable frequencies. The black hole spin a is related to the frequency ratio only, while its mass M is related to the frequency magnitude. The model is applied to the triple frequency set of HF QPOs observed in Sgr A* source with frequency ratio 3 : 2: 1. Acceptable versions of themulti-resonance model are determined by the restrictions on the Sgr A* supermassive black hole mass. The version of strong resonances related to the black hole "magic" spin a = 0.983 is acceptable but the version demonstrating the best agreement with the mass restrictions predicts spin a = 0.980.
ER -
KOTRLOVÁ, Andrea, Zdeněk STUCHLÍK a Gabriel TÖRÖK. Multi-Resonance Orbital Model Applied to High-Frequency Quasi-Periodic Oscillations Observed in Sgr A*. \textit{Acta Astronomica}. PL - Polská republika, roč.~63, č.~2, s.~275-292. ISSN~0001-5237. 2013.
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