Forced Oscillations in Fluid Tori and Quasi-Periodic Oscillations

Details Forced Oscillations in Fluid Tori and Quasi-Periodic Oscillations Forced Oscillations in Fluid Tori and Quasi-Periodic Oscillations

2005-10-19

arxiv.org/abs/astro-ph/0510571v1

Astron.Nachr.326:838-844,2005

Astronomy and Astrophysics

Astrophysics

Astronomische Nachrichten, in press

Scientific paper

10.1002/asna.200510424

The kilo-Hertz Quasi--Periodic Oscillations in X-ray binaries could originate within the accretion flow, and be a signature of non--linear fluid oscillations and mode coupling in strong gravity. The possibility to decipher these systems will impact our knowledge of fundamental parameters such as the neutron star mass, radius, and spin. Thus they offer the possibility to constrain the nuclear equation of state and the rotation parameter of stellar--mass black holes. We review the general properties of these oscillations from a hydrodynamical point of view, when the accretion flow is subject to external perturbations and summarize recent results.

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