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Distinguishing betw...
Distinguishing between spot and torus models of high-frequency quasiperiodic oscillations
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Karas, V. (author)
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Bakala, P. (author)
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Török, G. (author)
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Dovčiak, M. (author)
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Wildner, M. (author)
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Wzientek, D. (author)
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Šrámková, E. (author)
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- Abramowicz, Marek A, 1945 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för fysik (GU),Department of Physics (GU)
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Goluchová, K. (author)
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Mazur, G. P. (author)
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Vincent, F. H. (author)
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(creator_code:org_t)
- Czech Technical University, 2014
- 2014
- English.
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In: Acta Polytechnica. - : Czech Technical University. - 1210-2709. ; 54:3, s. 191-196
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Abstract
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- 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). © Czech Technical University in Prague, 2014.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Keyword
- Accretion
- Accretion disks
- Black hole physics
- X-rays: binaries
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Karas, V.
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Bakala, P.
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Török, G.
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Dovčiak, M.
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Wildner, M.
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Wzientek, D.
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show more...
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Šrámková, E.
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Abramowicz, Mare ...
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Goluchová, K.
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Mazur, G. P.
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Vincent, F. H.
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
- Articles in the publication
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Acta Polytechnic ...
- By the university
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University of Gothenburg