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  • We study the dynamics of spiral waves and oscillation modes in relativistic rotating discs around black holes. Generalizing the Newtonian theory, we show that wave absorption can take place at the corotation resonance, where the pattern frequency of the wave matches the background disc rotation rate. We derive the general relativistic expression for the disc vortensity (vorticity divided by surface density), which governs the behaviour of density perturbation near corotation. We present the numerical results of the frequencies and growth rates of p modes for various black hole spin and model disc parameters (the surface density profile and sound speed), and discuss their implications for understanding the enigmatic high-frequency quasi-periodic oscillations observed in black hole X-ray binaries.
  • We study the dynamics of spiral waves and oscillation modes in relativistic rotating discs around black holes. Generalizing the Newtonian theory, we show that wave absorption can take place at the corotation resonance, where the pattern frequency of the wave matches the background disc rotation rate. We derive the general relativistic expression for the disc vortensity (vorticity divided by surface density), which governs the behaviour of density perturbation near corotation. We present the numerical results of the frequencies and growth rates of p modes for various black hole spin and model disc parameters (the surface density profile and sound speed), and discuss their implications for understanding the enigmatic high-frequency quasi-periodic oscillations observed in black hole X-ray binaries. (en)
Title
  • Corotation resonance and overstable oscillations in black hole accretion discs: general relativistic calculations
  • Corotation resonance and overstable oscillations in black hole accretion discs: general relativistic calculations (en)
skos:prefLabel
  • Corotation resonance and overstable oscillations in black hole accretion discs: general relativistic calculations
  • Corotation resonance and overstable oscillations in black hole accretion discs: general relativistic calculations (en)
skos:notation
  • RIV/67985815:_____/13:00423309!RIV14-MSM-67985815
http://linked.open...avai/riv/aktivita
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  • I, P(GAP209/11/2004), P(ME09036)
http://linked.open...iv/cisloPeriodika
  • 4
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  • 67096
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  • RIV/67985815:_____/13:00423309
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  • accretion discs; hydrodynamics; X-ray binaries (en)
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  • GB - Spojené království Velké Británie a Severního Irska
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  • [71060398CD65]
http://linked.open...i/riv/nazevZdroje
  • Monthly Notices of the Royal Astronomical Society
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  • 434
http://linked.open...iv/tvurceVysledku
  • Horák, Jiří
  • Lai, D.
http://linked.open...ain/vavai/riv/wos
  • 000325262300005
issn
  • 0035-8711
number of pages
http://bibframe.org/vocab/doi
  • 10.1093/mnras/stt1120
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