Nonlinear Variability of Quasi-Periodic Oscillations in GX 339-4

Abstract

We examine the nonlinear variability of quasi-periodic oscillations (QPOs) using the bicoherence, a measure of phase coupling at different Fourier frequencies. We analyse several observations of RXTE/PCA archival data of the black hole binary GX 339-4 which show QPOs. In the type C QPOs, we confirm the presence of the 'hypotenuse' pattern where there is nonlinear coupling between low frequencies that sum to the QPO frequency as well as the 'web' pattern where in addition to the hypotenuse, nonlinear coupling between the QPO frequency and the broadband noise is present. We find that type B QPOs show a previously unknown pattern. We also show that the bicoherence pattern changes gradually from 'web' to 'hypotenuse' as the source moves from a hard intermediate state to a soft intermediate state. Additionally, we reconstruct the QPO waveforms from six observations using the biphase. Finally, we present a scenario by which a moderate increase in the optical depth of the hard X-ray emission region can explain the changes in the non-linearity seen during this transition.

arXiv comment9 pages, 7 figures, 1 table, accepted for publication in MNRAS Main Journal

References in corpus (26)

• Lense-Thirring Precession and QPOs in Low Mass X-Ray Binaries
• Correlated X-ray Spectral and Timing Behavior of the Black Hole Candidate XTE J1550-564: A New Interpretation of Black Hole States
• The evolution of the timing properties of the black-hole transient GX 339-4 during its 2002/2003 outburst
• On the X-ray time lags in the black hole candidates
• The ABC of low-frequency quasi-periodic oscillations in Black-Hole Candidates: analogies with Z-sources
• The flux-dependent amplitude of broadband noise variability in X-ray binaries and active galaxies
• The Soft Gamma-Ray Spectral Variability of Cygnus X-1
• Characterizing the QPO Behavior of the X-ray Nova XTE J1550--564
• The Complex Phase Lag Behavior of the 3-12 Hz Quasi-Periodic Oscillations during the Very High State of XTE J1550-564
• Hysteresis in the Light Curves of Soft X-ray Transients
• Low frequency oscillations in black holes: a spectral-timing approach to the case of GX 339-4
• Geometrical constraints on the origin of timing signals from black holes
• X-ray Reflection Spectroscopy of the Black Hole GX 339-4: Exploring the Hard State with Unprecedented Sensitivity
• Inclination dependence of QPO phase lags in black hole X-ray binaries
• Accretion-induced variability links young stellar objects, white dwarfs, and black holes
• Complete Multiwavelength Evolution of Galactic Black Hole Transients During Outburst Decay I: Conditions for "Compact" Jet Formation
• Phase-resolved spectroscopy of low frequency quasi-periodic oscillations in GRS 1915+105
• Phase Lags and Coherence of X-Ray Variability in Black Hole Candidates
• A Comptonization Model for Phase Lag Variability in GRS 1915+105
• Phase Lag and Coherence Function of X-ray emission from Black Hole Candidate XTE J1550-564
• Higher Order Variability Properties of Accreting Black Holes
• An imperfect double: probing the physical origin of the low-frequency QPO and its harmonic in black hole binaries
• Coupling between QPOs and broadband noise components in GRS 1915+105
• The biphase explained: understanding the asymmetries in coupled Fourier components of astronomical timeseries
• The Bicoherence as a Diagnostic for Models of High Frequency QPOs
• The Chaotic Long-term X-ray Variability of 4U 1705--44

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• A broadband spectral-timing study of QPOs in the bright black hole X-ray binary Swift J1727.8-1613
• A Likely Inclination Dependence in the Non-linear Variability of Quasi Periodic Oscillations from Black Hole Binaries
• Using the bispectrum to probe radio X-ray correlations in GRS 1915+105
• Complex Variability of Kepler AGN Revealed by Recurrence Analysis