Hostname: page-component-78c5997874-mlc7c Total loading time: 0 Render date: 2024-11-10T16:24:05.201Z Has data issue: false hasContentIssue false
  • English
  • Français

Simulations of flux variability of oscillating accretion fluid tori around Kerr black holes

Published online by Cambridge University Press:  24 March 2015

Pavel Bakala ,
Kateřina Goluchová ,
Eva Šrámková ,
Andrea Kotrlová ,
Gabriel Török ,
Frederic H. Vincent  and
Marek A. Abramowicz
Pavel Bakala
Affiliation:
Institute of Physics, Faculty of Philosophy and Science, Silesian University in Opava, Bezručovo nám. 13, Opava, Czech Republic e-mail: pavel.bakala@fpf.slu.cz
Kateřina Goluchová
Affiliation:
Institute of Physics, Faculty of Philosophy and Science, Silesian University in Opava, Bezručovo nám. 13, Opava, Czech Republic e-mail: pavel.bakala@fpf.slu.cz
Eva Šrámková
Affiliation:
Institute of Physics, Faculty of Philosophy and Science, Silesian University in Opava, Bezručovo nám. 13, Opava, Czech Republic e-mail: pavel.bakala@fpf.slu.cz
Andrea Kotrlová
Affiliation:
Institute of Physics, Faculty of Philosophy and Science, Silesian University in Opava, Bezručovo nám. 13, Opava, Czech Republic e-mail: pavel.bakala@fpf.slu.cz
Gabriel Török
Affiliation:
Institute of Physics, Faculty of Philosophy and Science, Silesian University in Opava, Bezručovo nám. 13, Opava, Czech Republic e-mail: pavel.bakala@fpf.slu.cz
Frederic H. Vincent
Affiliation:
Nicolaus Copernicus Astronomical Center, Warszawa, Poland
Marek A. Abramowicz
Affiliation:
Institute of Physics, Faculty of Philosophy and Science, Silesian University in Opava, Bezručovo nám. 13, Opava, Czech Republic e-mail: pavel.bakala@fpf.slu.cz
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

High frequency quasi-periodic oscillations (HF QPOs) are observed in the X-ray power-density spectra (PDS) of several microquasars and low mass X-ray binaries. Many proposed QPO models are based on oscillations of accretion toroidal fluid structures orbiting in the vicinity of a compact object. We study oscillating accretion tori orbiting in the vicinity of a Kerr black hole. We demonstrate that significant variation of the observed flux can be caused by the combination of radial and vertical oscillation modes of a slender, polytropic, perfect fluid, non-self-graviting torus with constant specific angular momentum. We investigate two combinations of the oscillating modes corresponding to the direct resonance QPO model and the modified relativistic precession QPO model.

Keywords

X-rays: binariesstars: neutronblack hole physicsaccretionaccretion disks
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 10 , Issue S313: Extragalactic jets from every angle , September 2014 , pp. 380 - 381
Copyright
Copyright © International Astronomical Union 2015 

References

Abramowicz, M. A. & Kluźniak, W. 2001, A&A, 374, L19Google Scholar
Blaes, O. M., Arras, P., & Fragile, P. C. 2006, MNRAS, 369, 1235CrossRefGoogle Scholar
Papaloizou, J. C. B. & Pringle, J. E. 1984, MNRAS, 208, 721CrossRefGoogle Scholar
Stella, L. & Vietri, M. 1999, Phys. Rev. Lett, 82, 17CrossRefGoogle Scholar
Török, G., Stuchlík, Z., & Bakala, P. 2007, Central European Journal of Physics, 5, 457Google Scholar
Török, G., Bakala, P., Šrámková, E., Stuchlík, Z., & Urbanec, M. 2010, ApJ, 714, 748CrossRefGoogle Scholar