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The Upper Kilohertz Quasi-periodic Oscillation: A Gravitationally Lensed Vertical Oscillation

The Upper Kilohertz Quasi-periodic Oscillation: A Gravitationally Lensed Vertical Oscillation...

BN - Astronomie a nebeská mechanika, astrofyzika

  • 2004
    • •
  • Jx
Result

High frequency Quasi-Periodic Oscillations

In this workshop we have discussed accretion-disc models for quasi-periodic oscillations in accreting binary stars.

BN - Astronomie a nebeská mechanika, astrofyzika

  • 2005
    • •
  • W
Result

Twin peak separation in sources with kilohertz quasi-periodic oscillations caused by orbital motion

Twin peak separation in sources with kilohertz quasi-periodic oscillations caused by orbital motion...

BN - Astronomie a nebeská mechanika, astrofyzika

  • 1999
    • •
  • Jx
Result

Twin peak quasi-periodic oscillations as signature of oscillating cusp torus

The authors propose a new model of twin-peak quasi-periodic oscillations.This model considers an oscillating torus with cusp that changes location of its centre around radii very close to innermost stable circular orbit....

BN - Astronomie a nebeská mechanika, astrofyzika

  • 2014
    • •
  • D
Result

Towards modeling quasi-periodic oscillations of microquasars with oscillating slender tori

spectra of quasi-periodic oscillations.Context. One of the often discussed models for high-frequency quasi-periodic oscillations of X-ray binaries is the oscillating torus model, which c...

BN - Astronomie a nebeská mechanika, astrofyzika

  • 2013
    • •
  • Jx
    • •
  • Link
Result

Quasi-periodic oscillations in solar X-ray sources

We have searched for quasi-periodic oscillations in the hard X-ray emission found that while in the case with the footpoints X-ray sources the quasi-periods only the quasi-periods longer ...

BN - Astronomie a nebeská mechanika, astrofyzika

  • 2011
    • •
  • D
Result

The model constraints from the observed trends for the quasi-periodic oscillation in RE J1034+396

We analyze the time variability of the X-ray emission of RE J1034+396 ? an active galactic nucleus with the first firm detection of a quasi-periodic oscillations (QPO). Based on the results of a wavelet analysis, we find a ...

BN - Astronomie a nebeská mechanika, astrofyzika

  • 2010
    • •
  • Jx
Result

Modulation of high-frequency quasi-periodic oscillations by relativistic effects

Two fundamental questions that need to be answered in the context of any QPO theory are: how QPOs are excited, and how flux is modulated. I will address the second issue and will discuss possible modulation mechanisms for both neutron-star and black-...

BN - Astronomie a nebeská mechanika, astrofyzika

  • 2007
    • •
  • D
Result

Oscillations and Waves in Radio Source of Drifting Pulsation Structures

-periodic oscillations with periods ranging from about 1 to 108 s in all studied DPSs reconnection. Phases of most the oscillations in DPSs, especially for the period around 1 s periods in some DP...

Astronomy (including astrophysics,space science)

  • 2018
    • •
  • Jimp
    • •
  • Link
Result

Disk instability as an energy source for quasi-periodic oscillations

We discuss a scenario, in which the energy for quasi-periodic oscillations comes from instabilities of the accretion disk. We demonstrate this mechanism on the interaction among stable and unstable modes of oscillations...

BN - Astronomie a nebeská mechanika, astrofyzika

  • 2007
    • •
  • D
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