The evolution of the high-frequency variability in the black hole candidate GRS 1915+105 as seen by RXTE

Abstract

GRS 1915+105 can show type-C quasi-periodic oscillations (QPOs) in the power density spectrum. A high-frequency QPO (HFQPO) at 67 Hz has been observed in this source, albeit less often than the type-C QPOs. Besides these features, GRS 1915+105 sometimes shows a broad bump in the power spectrum at around 30-150 Hz. We study the power spectra of GRS 1915+105 with the Rossi X-ray Timing Explorer when the source was in the $\chi$ class. We find that the rms amplitude of the bump depends strongly upon both the frequency of the type-C QPO and the hardness ratio, and is correlated with the corona temperature and anti-correlated with the radio flux at 15 GHz. The characteristic frequency of the bump is better correlated with a combination of the frequency of the type-C QPO and the hardness ratio than with the frequency of the type-C QPO alone. The rms amplitude of the bump generally increases with energy from ~1-2% at ~3 keV to ~10-15% at ~30 keV. We suggest that the bump and the high-frequency QPO may be the same variability component but the properties of the corona affect the coherence of this variability, leading either to a HFQPO when the spectrum is in the relatively soft $\gamma$ class, or to a bump when the spectrum is in the hard $\chi$ class. Finally, we discuss the anti-correlation between the rms amplitude of the bump and the radio flux in the context of the relation between the corona and the jet.

arXiv comment11 pages, 7 figures, accepted for publication in MNRAS

References in corpus (51)

• X-ray Properties of Black-Hole Binaries
• Towards a unified model for black hole X-ray binary jets
• A universal radio/X-ray correlation in low/hard state black hole binaries
• A Unified Description of the Timing Features of Accreting X-ray Binaries
• RXTE Observation of Cygnus X-1: II. Timing Analysis
• MERLIN observations of relativistic ejections from GRS 1915+105
• Low frequency QPO spectra and Lense-Thirring precession
• GRS 1915+105 and the Disc-Jet Coupling in Accreting Black Hole Systems
• The ABC of low-frequency quasi-periodic oscillations in Black-Hole Candidates: analogies with Z-sources
• A review of quasi-periodic oscillations from black hole X-ray binaries: observation and theory
• Correlations in Quasi-Periodic Oscillation and Noise Frequencies Among Neutron-Star and Black-Hole X-ray Binaries
• The enhanced X-ray Timing and Polarimetry mission - eXTP
• The "universal" radio/X-ray flux correlation : the case study of the black hole GX 339-4
• X-Ray Variability Coherence: How to Compute it, What it Means, and How it Constrains Models of Cyg X-1 and GX 339-4
• Are There Three Peaks in the Power Spectra of GX 339-4 and Cyg X-1?
• High-Frequency Quasi-Periodic Oscillations in black-hole binaries
• The variable radio emission from GRS 1915+105
• Transient Black Hole Binaries
• Fast variability as a tracer of accretion regimes in black hole transients
• Discovery of a Second High Frequency QPO from the Microquasar GRS 1915+105
• Evidence for Frame-Dragging Around Spinning Black Holes in X-Ray Binaries
• The radio/X-ray domain of black hole X-ray binaries at the lowest radio luminosities
• Discovery of oscillations above 200 keV in a black hole X-ray binary with Insight-HXMT
• X-ray time variability across the atoll source states of 4U 1636--53
• The Comptonising medium of the neutron star in 4U 1636-53 through its lower kilohertz Quasi-Periodic Oscillations
• Coupling between the accreting corona and the relativistic jet in the micro quasar GRS 1915+105
• A two-component Comptonisation model for the type-B QPO in MAXI J1348-630
• Characterizing a new class of variability in GRS 1915+105 with simultaneous INTEGRAL/RXTE observations
• Phase-resolved spectroscopy of low frequency quasi-periodic oscillations in GRS 1915+105
• Discovery of high-frequency quasi-periodic oscillations in the black-hole candidate IGR J17091-3624
• The energy dependence of the centroid frequency and phase lag of the QPOs in GRS 1915+105
• Radio Emission and the Timing Properties of the Hard X-ray State of GRS 1915+105
• High-frequency Quasi-Periodic Oscillations from GRS 1915+105 in its C state
• A Systematic Analysis of the Phase Lags Associated with the Type-C Quasi-periodic Oscillation in GRS 1915+105
• An Obscured, Seyfert-2-like State of the Stellar-mass Black Hole GRS 1915+105 Caused by Failed Disk Winds
• A variable corona for GRS 1915+105
• Observations of a radio-bright, X-ray obscured GRS 1915+105
• X-ray quasi-periodic oscillations in Lense--Thirring precession model - I. variability of relativistic continuum
• The evolution of the corona in MAXI J1535-571 through type-C quasi-periodic oscillations with Insight-HXMT
• The phase lags of high-frequency quasi-periodic oscillations in four black-hole candidates
• High-Frequency Quasi-Periodic Oscillations from GRS 1915+105
• On the two types of steady hard X-ray states of GRS 1915+105
• The Evolution of the Phase Lags Associated with the Type-C Quasi-periodic Oscillation in GX 339--4 during the 2006/2007 Outburst
• Comparison of time/phase lags in the hard state and plateau state of GRS 1915+105
• A Statistical Study on the Low-Frequency QPO Amplitude Spectrum and Amplitude in GRS 1915+105
• A timing-based estimate of the spin of the black hole in MAXI J1820+070
• First INTEGRAL observations of GRS 1915+105
• Testing evolution of LFQPOs with mass accretion rate in GRS 1915+105 with Insight-HXMT
• X-ray quasi-periodic oscillations in Lense-Thirring precession model -- II. variability of relativistic iron K$\alpha$ line
• Simultaneous detection of an intrinsic absorber and a compact jet emission in the X-ray binary IGR J17091-3624 during a hard accretion state
• XMM-Newton and NICER measurement of the rms spectrum of the millihertz quasi-periodic oscillations in the neutron-star low-mass X-ray binary 4U 1636-53

Cited by in corpus (5)

• A hidden quasi-periodic oscillation in Cygnus X-1 revealed by NICER
• Timing analysis of the black-hole candidate Swift J1727.8-1613: detection of a dip-like feature in the high-energy cross spectrum
• Black-hole X-ray binary Swift J1727.8$-$1613 shows simultaneous Type-B and Type-C quasi-periodic oscillations across the hard-intermediate and soft-intermediate states
• Characteristics of the High-frequency Humps in the Black hole X-ray Binary Swift J1727.8--1613
• QPOML: A Machine Learning Approach to Detect and Characterize Quasi-Periodic Oscillations in X-ray Binaries