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Are Low-Frequency Quasi-Periodic Oscillations seen in accretion flows the disk response to a jet instability? by Ferreira, Jonathan; Marcel, Gregoire; Petrucci, Pierre-Olivier; Rodriguez, Jerome; Malzac, Julien; Belmont, Renaud; Clavel, Maica; Henri, Gilles; Corbel, Stephane; Coriat, Mickael is a scholarly article available to read on EtoBox.

What is Are Low-Frequency Quasi-Periodic Oscillations seen in accretion flows the disk response to a jet instability? about?

Low Frequency Quasi-Periodic Oscillations or LF QPOs are ubiquitous in BH X-ray binaries and provide strong constraints on the accretion-ejection processes. Although several models have been proposed so far, none has been proven to reproduce all observational constraints and no consensus has emerged yet. We make the conjecture that disks are threaded by a large scale vertical magnetic field that splits it into two radial zones. In the inner Jet Emitting Disk (JED), a near equipartition field allows to drive powerful self-collimated jets, while beyond a transition radius, the disk magnetization is too low and a Standard Accretion Disk (SAD) is settled. In a series of papers, this hybrid JED-SAD disk configuration has been shown to successfully reproduce most multi-wavelength (radio and X-rays) observations, as well as the concurrence with the LFQPOs for the archetypal source GX 339-4. We first analyze the main QPO scenarios provided in the literature: 1) a specific process occurring at the transition radius, 2) the accretion-ejection instability and 3) the solid-body Lense-Thirring disk precession. We recall their main assumptions and shed light on some severe theoretical issues tha

Author

Ferreira, Jonathan; Marcel, Gregoire; Petrucci, Pierre-Olivier; Rodriguez, Jerome; Malzac, Julien; Belmont, Renaud; Clavel, Maica; Henri, Gilles; Corbel, Stephane; Coriat, Mickael

Published

2022

Language

EN