About: Distinguishing between spot and torus models of high-frequency quasiperiodic oscillations

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	In the context of high-frequency quasi-periodic oscillation (HF QPOs) we further explore the appearance of an observable signal generated by hot spots moving along quasi-elliptic trajectories close to the innermost stable circular orbit in the Schwarzschild spacetime. The aim of our investigation is to reveal whether observable characteristics of the Fourier power-spectral density can help us to distinguish between the two competing models, namely, the idea of bright spots orbiting on the surface of an accretion torus versus the scenario of intrinsic oscillations of the torus itself. We take the capabilities of the present observatories (represented by the Rossi X-ray Timing Explorer, RXTE) into account, and we also consider the proposed future instruments (represented here by the Large Observatory for X-ray Timing, LOFT). In the context of high-frequency quasi-periodic oscillation (HF QPOs) we further explore the appearance of an observable signal generated by hot spots moving along quasi-elliptic trajectories close to the innermost stable circular orbit in the Schwarzschild spacetime. The aim of our investigation is to reveal whether observable characteristics of the Fourier power-spectral density can help us to distinguish between the two competing models, namely, the idea of bright spots orbiting on the surface of an accretion torus versus the scenario of intrinsic oscillations of the torus itself. We take the capabilities of the present observatories (represented by the Rossi X-ray Timing Explorer, RXTE) into account, and we also consider the proposed future instruments (represented here by the Large Observatory for X-ray Timing, LOFT). (en)
Title	Distinguishing between spot and torus models of high-frequency quasiperiodic oscillations Distinguishing between spot and torus models of high-frequency quasiperiodic oscillations (en)
skos:prefLabel	Distinguishing between spot and torus models of high-frequency quasiperiodic oscillations Distinguishing between spot and torus models of high-frequency quasiperiodic oscillations (en)
skos:notation	RIV/67985815:_____/14:00429999!RIV15-AV0-67985815
http://linked.open...avai/riv/aktivita	I P S
http://linked.open...avai/riv/aktivity	I, P(EE2.3.20.0071), P(GB14-37086G), P(GPP209/12/P740), S
http://linked.open...iv/cisloPeriodika	3
http://linked.open...vai/riv/dodaniDat	2015
http://linked.open...aciTvurceVysledku	Dovčiak, Michal Karas, Vladimír
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Astronomický ústav AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	11810
http://linked.open...ai/riv/idVysledku	RIV/67985815:_____/14:00429999
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	X-rays; binaries; accretion (en)
http://linked.open.../riv/klicoveSlovo	binaries accretion X-rays
http://linked.open...odStatuVydavatele	CZ - Česká republika
http://linked.open...ontrolniKodProRIV	[88B2F2985DC8]
http://linked.open...i/riv/nazevZdroje	Acta polytechnica
http://linked.open...in/vavai/riv/obor	BN
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	11 (xsd:int)
http://linked.open...vavai/riv/projekt	Centrum Alberta Einsteina pro gravitaci a astrofyziku High frequency quasi-periodic oscillations and compact object properties: theory vs. observation Supporting Integration with the International Theoretical and Observational Research Network in Relativistic Astrophysics of Compact Objects
http://linked.open...UplatneniVysledku	2014
http://linked.open...v/svazekPeriodika	54
http://linked.open...iv/tvurceVysledku	Dovčiak, Michal Karas, Vladimír Abramowicz, M. A. Mazur, G. P. Vincent, F. H. Bakala, P. Goluchová, K. Török, G. Wildner, M. Wzientek, D. Šrámková, E.
issn	1210-2709
number of pages	6 (xsd:int)
http://bibframe.org/vocab/doi	10.14311/AP.2014.54.0191

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