A Comptonization Model for Phase Lag Variability in GRS 1915+105

Abstract

In this Letter we propose a simple thermal comptonization model to account for the observed properties of the phase lags associated to the ``plateau'' intervals of GRS 1915+105. By invoking a temperature stratification in a corona and assuming that the optical depth of the comptonizing region increases as the disk inner radius moves inward, we are able to reproduce both the observed colors and time lags in the continuum.

6 pages Latex with 2 ps figures. Accepted for publication in ApJ Letters

References in corpus (14)

• Advection-Dominated Accretion and the Spectral States of Black Hole X-Ray Binaries: Application to Nova Muscae 1991
• Black Hole Spin in X-Ray Binaries: Observational Consequences
• MERLIN observations of relativistic ejections from GRS 1915+105
• Correlations in Quasi-Periodic Oscillation and Noise Frequencies Among Neutron-Star and Black-Hole X-ray Binaries
• Optical Observations of GRO J1655-40 in Quiescence I: A Precise Mass for the Black Hole Primary
• An unstable central disk in the superluminal black-hole X-ray binary GRS 1915+105
• Evidence for Frame-Dragging Around Spinning Black Holes in X-Ray Binaries
• Variable-Frequency QPOs from the Galactic Microquasar GRS 1915+105
• Limit-Cycle Behaviour of Thermally-Unstable Accretion Flows onto Black Holes
• Repeated Relativistic Ejections in GRS 1915+105
• The Pattern of Correlated X-ray Timing and Spectral Behavior in GRS 1915+105
• Quasi-periodic variability and the inner radii of thin accretion disks in galactic black-hole systems
• Phase Lag and Coherence Function of X-ray emission from Black Hole Candidate XTE J1550-564
• On the thermal stability of transonic accretion discs

Cited by in corpus (36)

• X-ray Properties of Black-Hole Binaries
• Characterizing the QPO Behavior of the X-ray Nova XTE J1550--564
• Tracing the power-law component in the energy spectrum of black hole candidates as a function of the QPO frequency
• A two-component Comptonisation model for the type-B QPO in MAXI J1348-630
• Radio Emission and the Timing Properties of the Hard X-ray State of GRS 1915+105
• A Systematic Analysis of the Phase Lags Associated with the Type-C Quasi-periodic Oscillation in GRS 1915+105
• The X-ray Properties of Low-Frequency Quasi-Periodic Oscillations from GRS 1915+105 up to 120 keV
• A variable corona for GRS 1915+105
• The evolving properties of the corona of GRS 1915+105: A spectral-timing perspective through variable-Comptonisation modelling
• The phase lags of high-frequency quasi-periodic oscillations in four black-hole candidates
• The Evolution of the Phase Lags Associated with the Type-C Quasi-periodic Oscillation in GX 339--4 during the 2006/2007 Outburst
• Relations between X-ray timing features and spectral parameters of Galactic black hole X-ray binaries
• A Statistical Study on the Low-Frequency QPO Amplitude Spectrum and Amplitude in GRS 1915+105
• Variability and phase lags of the type-C quasi-periodic oscillation of MAXI J1348-630 with NICER
• Observational Signatures of Black Holes: Spectral and Temporal Features of XTE J1550-564
• Timing and Spectral Properties of X-ray Emission from the Converging Flows onto Black hole: Monte-Carlo Simulations
• ALMA/NICER observations of GRS 1915+105 indicate a return to a hard state
• The Cross-Spectra of Cir X-1: Evolution of Time Lags
• A global study of Type B quasi-periodic oscillation in black hole X-ray binaries
• Anti-correlated hard X-ray time lag in GRS 1915+105: evidence for a truncated accretion disc
• Relation between spectral changes and the presence of the lower kHz QPO in the neutron-star low-mass X-ray binary 4U 1636-53
• A detailed study of the 5 Hz quasi-periodic oscillations in the bright X-ray transient and black-hole candidate GRS 1739-278
• Timing Analysis of a New Black Hole Candidate MAXI J1803-298 with Insight-HXMT and NICER
• Constraining the Coronal Heights and Readjustment Velocities Based on the Detection of a Few Hundred Seconds Delays in the Z Source GX 17+2
• The X-ray corona in the black-hole binary GRO J1655--40 from the properties of non-harmonically related quasi-periodic oscillations
• Nonlinear Variability of Quasi-Periodic Oscillations in GX 339-4
• Interpreting the large amplitude X-ray variation of GRS 1915+105 and IGR J17091-3624 as modulations of an accretion disc
• Using the bispectrum to probe radio X-ray correlations in GRS 1915+105
• Time Lags of Z Source GX 5-1
• AstroSat Observation of Non-Resonant Type-C QPOs in MAXI J1535-571
• A journey from the hard to the soft state: How do QPOs evolve in the 2021 outburst of GX 339-4?
• Probing black-hole accretion through time variability
• The cross-correlation analysis in Z source GX 349+2
• The Cross Spectral Time lags evolution along branches in XTE J1701-462
• A Disk--Jet interaction model for the X--Ray Variability in Microquasars
• Investigating the coronal structure by studying time lags in the Atoll source 4U 1705-44 using AstroSat