Towards modeling quasi-periodic oscillations of microquasars with oscillating slender tori

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F47813059%3A19240%2F13%3A%230004626" target="_blank" >RIV/47813059:19240/13:#0004626 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.aanda.org/articles/aa/abs/2013/06/aa21488-13/aa21488-13.html" target="_blank" >http://www.aanda.org/articles/aa/abs/2013/06/aa21488-13/aa21488-13.html</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1051/0004-6361/201321488" target="_blank" >10.1051/0004-6361/201321488</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Towards modeling quasi-periodic oscillations of microquasars with oscillating slender tori

Popis výsledku v původním jazyce

Context. One of the often discussed models for high-frequency quasi-periodic oscillations of X-ray binaries is the oscillating torus model, which considers oscillation modes of slender accretion tori. Aims. Here, we aim at developing this model by considering the observable signature of an optically thick slender accretion torus subject to simple periodic deformations. Methods. We compute light curves and power spectra of a slender accretion torus subject to simple periodic deformations: vertical or radial translation, rotation, expansion, and shear. Results. We show that different types of deformations lead to very different Fourier power spectra and therefore could be observationally distinguished. Conclusions. This work is a first step in a longer term study of the observable characteristics of the oscillating torus model. It gives promising perspectives on the possibility of constraining this model by studying the observed power spectra of quasi-periodic oscillations.

Název v anglickém jazyce

Towards modeling quasi-periodic oscillations of microquasars with oscillating slender tori

Popis výsledku anglicky

Context. One of the often discussed models for high-frequency quasi-periodic oscillations of X-ray binaries is the oscillating torus model, which considers oscillation modes of slender accretion tori. Aims. Here, we aim at developing this model by considering the observable signature of an optically thick slender accretion torus subject to simple periodic deformations. Methods. We compute light curves and power spectra of a slender accretion torus subject to simple periodic deformations: vertical or radial translation, rotation, expansion, and shear. Results. We show that different types of deformations lead to very different Fourier power spectra and therefore could be observationally distinguished. Conclusions. This work is a first step in a longer term study of the observable characteristics of the oscillating torus model. It gives promising perspectives on the possibility of constraining this model by studying the observed power spectra of quasi-periodic oscillations.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BN - Astronomie a nebeská mechanika, astrofyzika

OECD FORD obor

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Projekt

<a href="/cs/project/GPP209%2F12%2FP740" target="_blank" >GPP209/12/P740: Vysokofrekvenční kvazi-periodické oscilace a vlastnosti kompaktních objektů: teorie vs. pozorování</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 periodika

ASTRONOMY & ASTROPHYSICS

ISSN

0004-6361

e-ISSN

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Svazek periodika

554

Číslo periodika v rámci svazku

A&A

Stát vydavatele periodika

FR - Francouzská republika

Počet stran výsledku

6

Strana od-do

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Kód UT WoS článku

000320444200056

EID výsledku v databázi Scopus

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