Multi-resonance orbital model of HF QPOs

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F47813059%3A19240%2F13%3A%230004629" target="_blank" >RIV/47813059:19240/13:#0004629 - isvavai.cz</a>

Výsledek na webu

<a href="http://journals.cambridge.org/article_S1743921312020182" target="_blank" >http://journals.cambridge.org/article_S1743921312020182</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1017/S1743921312020182" target="_blank" >10.1017/S1743921312020182</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Multi-resonance orbital model of HF QPOs

Popis výsledku v původním jazyce

Using known frequencies of the twin peak high-frequency quasiperiodic oscillations (HF QPOs) and known mass M of the central black hole, the black-hole dimensionless spin a can be determined assuming a concrete version of the resonance model. However, large range of observationally limited values of the black hole mass implies a low precision of the spin estimates. We discuss the possibility of higher precision of the black hole spin a measurements in the framework of multi-resonance model inspired by observations of more than two HF QPOs in some black hole sources. We determine the spin and mass dependence of the twin peak frequencies with a general rational ratio n:m assuming a non-linear resonance of oscillations with the epicyclic and Keplerian frequencies or their combinations. In the multi-resonant model, the twin peak resonances are combined properly to give the observed frequency set. We focus on the special case of duplex frequencies, when the top, bottom, or mixed frequency i

Název v anglickém jazyce

Multi-resonance orbital model of HF QPOs

Popis výsledku anglicky

Using known frequencies of the twin peak high-frequency quasiperiodic oscillations (HF QPOs) and known mass M of the central black hole, the black-hole dimensionless spin a can be determined assuming a concrete version of the resonance model. However, large range of observationally limited values of the black hole mass implies a low precision of the spin estimates. We discuss the possibility of higher precision of the black hole spin a measurements in the framework of multi-resonance model inspired by observations of more than two HF QPOs in some black hole sources. We determine the spin and mass dependence of the twin peak frequencies with a general rational ratio n:m assuming a non-linear resonance of oscillations with the epicyclic and Keplerian frequencies or their combinations. In the multi-resonant model, the twin peak resonances are combined properly to give the observed frequency set. We focus on the special case of duplex frequencies, when the top, bottom, or mixed frequency i

Druh

D - Stať ve sborníku

CEP obor

BN - Astronomie a nebeská mechanika, astrofyzika

OECD FORD obor

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Projekt

<a href="/cs/project/GA202%2F09%2F0772" target="_blank" >GA202/09/0772: Aktuální problémy gravitace, obecné relativity a relativistické astrofyziky</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2013

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Proceedings of the International Astronomical Union, Symposium No. 290: Feeding compact objects: Accretion on all scales

ISBN

978-1-107-03379-5

ISSN

1743-9221

e-ISSN

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Počet stran výsledku

2

Strana od-do

315-316

Název nakladatele

Cambridge University Press

Místo vydání

Cambridge, UK

Místo konání akce

Beijing, China

Datum konání akce

20. 8. 2012

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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