Models of quasi-periodic oscillations related to mass and spin of the GRO J1655-40 black hole

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F47813059%3A19240%2F16%3AN0000024" target="_blank" >RIV/47813059:19240/16:N0000024 - isvavai.cz</a>
Result on the web
<a href="http://www.aanda.org/articles/aa/abs/2016/02/aa26095-15/aa26095-15.html" target="_blank" >http://www.aanda.org/articles/aa/abs/2016/02/aa26095-15/aa26095-15.html</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1051/0004-6361/201526095" target="_blank" >10.1051/0004-6361/201526095</a>

Result language
angličtina
Original language name
Models of quasi-periodic oscillations related to mass and spin of the GRO J1655-40 black hole
Original language description
Frequencies of the three quasi-periodic oscillation (QPO) modes observed simultaneously in the accreting black hole GRO J1655-40 are compared with the predictions of models. Models in which all three QPO signals are produced at the same radius are considered: these include different versions of relativistic precession, epicyclic resonance, tidal disruption, and warped disc models. Models that were originally proposed to interpret only the twin high-frequency QPOs are generalized here to interpret also the low-frequency QPO in terms of relativistic nodal precession. Inferred values of the black hole mass and spin from each QPO model are compared with the mass measured from optical observations and the spin inferred from X-ray spectroscopy techniques. We find that along with the relativistic precession model predicting $M = (5.3 +/- 0.1) M_{circle dot}$, $a = 0.286 +/- 0.004$, the so-called total precession model ($M = (5.5 +/- 0.1) M_{circle dot}$, $a = 0.276 +/- 0.003$), and the resonance epicyclic model with beat frequency ($M = (5.1 +/- 0.1) M_{circle dot}$, $a = 0.274 +/- 0.003$) also satisfy the optical mass test.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BN - Astronomy and celestial mechanics, astrophysics
OECD FORD branch
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Project
<a href="/en/project/GB14-37086G" target="_blank" >GB14-37086G: Albert Einstein Center for Gravitation and Astrophysics</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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