The Bicoherence as a Diagnostic for Models of High Frequency QPOs

Abstract

We discuss the use of the bicoherence - a measure of the phase coupling of oscillations at different frequencies - as a diagnostic between different models for high frequency quasi-periodic oscillations from Galactic black hole candidates. We show that this statistic is capable of finding qualitative distinctions between different hot spot models which produce nearly identical Fourier power density spectra. Finally, we show that proposed new timing missions should detect enough counts to make real use of this statistic.

5 pages, 5 figures (some must be displayed in color), accepted to MNRAS

Cited by in corpus (10)

• Stingray: A Modern Python Library For Spectral Timing
• Where are the X-ray QPOs in active galaxies?
• Interpreting the High Frequency QPO Power Spectra of Accreting Black Holes
• Coupling between QPOs and broadband noise components in GRS 1915+105
• Twin-peak quasiperiodic oscillations as an internal resonance
• A Likely Inclination Dependence in the Non-linear Variability of Quasi Periodic Oscillations from Black Hole Binaries
• Nonlinear Variability of Quasi-Periodic Oscillations in GX 339-4
• Using the bispectrum to probe radio X-ray correlations in GRS 1915+105
• Studying accreting black holes and neutron stars with time series: beyond the power spectrum
• X-ray Timing beyond the Rossi X-ray Timing Explorer