About: High-Frequency QPOs and Overstable Oscillations of Black-Hole Accretion Disks     Goto   Sponge   NotDistinct   Permalink

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  • We review recent works on global oscillation modes in black-hole accretion disks, and explain how, with the help of general relativistic effects, the energy stored in the disk differential rotation can be pumped into global spiral density modes in the disk, making these modes grow to large amplitudes under certain conditions (``corotational instability''). These modes are robust in the presence of disk magnetic fields and turbulence. The computed oscillation mode frequencies are largely consistent with the observed values for HFQPOs in BH X-ray binaries. The approximate 2:3 frequency ratio is also expected from this model. The connection of HFQPOs with other disk properties (such as production of episodic jets) is also discussed.
  • We review recent works on global oscillation modes in black-hole accretion disks, and explain how, with the help of general relativistic effects, the energy stored in the disk differential rotation can be pumped into global spiral density modes in the disk, making these modes grow to large amplitudes under certain conditions (``corotational instability''). These modes are robust in the presence of disk magnetic fields and turbulence. The computed oscillation mode frequencies are largely consistent with the observed values for HFQPOs in BH X-ray binaries. The approximate 2:3 frequency ratio is also expected from this model. The connection of HFQPOs with other disk properties (such as production of episodic jets) is also discussed. (en)
Title
  • High-Frequency QPOs and Overstable Oscillations of Black-Hole Accretion Disks
  • High-Frequency QPOs and Overstable Oscillations of Black-Hole Accretion Disks (en)
skos:prefLabel
  • High-Frequency QPOs and Overstable Oscillations of Black-Hole Accretion Disks
  • High-Frequency QPOs and Overstable Oscillations of Black-Hole Accretion Disks (en)
skos:notation
  • RIV/67985815:_____/13:00398871!RIV14-AV0-67985815
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • I
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
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http://linked.open...dnocenehoVysledku
  • 77398
http://linked.open...ai/riv/idVysledku
  • RIV/67985815:_____/13:00398871
http://linked.open...riv/jazykVysledku
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  • accretion disks; hydrodynamics; black hole physics (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...ontrolniKodProRIV
  • [3420AC09929D]
http://linked.open...v/mistoKonaniAkce
  • Beijing
http://linked.open...i/riv/mistoVydani
  • Cambridge Universrity Press
http://linked.open...i/riv/nazevZdroje
  • Feeding Compact Objects: Accretion on All Scales
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...UplatneniVysledku
http://linked.open...iv/tvurceVysledku
  • Horák, Jiří
  • Lai, D.
  • Fu, W.
  • Tsang, D.
  • Yu, C.
http://linked.open...vavai/riv/typAkce
http://linked.open.../riv/zahajeniAkce
issn
  • 1743-9213
number of pages
http://bibframe.org/vocab/doi
  • 10.1017/S1743921312019205
http://purl.org/ne...btex#hasPublisher
  • Cambridge
https://schema.org/isbn
  • 9781107033795
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