Confronting models for the high-frequency QPOs with Lense-Thirring precession

Abstract

Quasiperiodic oscillations (QPOs) have been observed in the power-density spectra of some low-mass X-ray binaries(LMXB) containing a black hole. The two major groups of QPOs -- low-frequency and high-frequency -- have rather different properties. That is why they are usually studied separately. In the literature one can find a large number of models for the high-frequency QPOs but not so many for the low-frequency ones. HF QPOs have attracted significant research efforts due to their potential to provide indispensable information for the properties of the black hole, for its accretion disc and for strong field gravity in general. However, in order to interpret the data for the HF QPOs of the observed objects we have to fix a model. Here we propose a simple test which could allow us to sift the models. The test is based on five rather general assumptions concerning the nature of the central object in black-hole binaries and the mechanism for the generation of the LF QPOs observed in the PDS of such objects. In other words we combine facts that we know about the LF and the HF QPOs of several objects and search for conflicts. As a result we single out a model for the HF QPOs -- the 3:2 nolinear resonance model. As a byproduct of this study we propose loose constraints on the mass of the LMXB H 1743-322.

replaced to match published version in MNRAS

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Cited by in corpus (2)

• Possible signature of magnetic fields related to quasi-periodic oscillation observed in microquasars
• Recurrent Instability in LMXB Accretion Disks: How Strange is GRS 1915+105?