QPO signatures of disk restoration after type-I X-ray bursts from 4U~1636$-$536

Abstract

Type--I thermonuclear bursts (TNBs) from neutron star low-mass X-ray binaries (NS LMXBs) originate on the neutron star's surface from the unstable burning of the accreted material. On the other hand, kHz quasi-periodic oscillations (QPOs) are thought to originate in the innermost regions of the in-spiralling accretion disk. Type-I TNBs are expected to impact the inner accretion flow, and consequently the kHz QPOs, due to the intense radiation pressure. In this work, we systematically study the evolution of the upper and the lower kHz QPOs immediately before and after a Type--I TNB on 4U 1636-536 using AstroSat observations in the 3--20,keV band. The analysis of the power-density-spectra show the presence of kHz QPOs within 200,seconds before the onset of the Type--I burst. However, we have not detected any prominent signature of the same within 100--200,sec after the burst. The kHz QPOs then re-emerges after $\approx$\,200\,sec. The fractional rms variation in the 3--20\,keV band drops by $\approx$\,5--6\,\%, supporting the non-existence of kHz QPOs in the 200\,sec post-Burst Zone. The time scale of 200\,sec coincides with the viscous time scale, highlighting a scenario where the inner disk is temporarily disrupted by the intense radiation from the Type--I TNB. The kHz QPO then re-establishes as the inner disk is restored.

arXiv comment14 pages, 6 figures, Accepted for publication in the Astrophysical Journal

References in corpus (43)

• Lense-Thirring Precession and QPOs in Low Mass X-Ray Binaries
• Thermonuclear (type-I) X-ray bursts observed by the Rossi X-ray Timing Explorer
• A Unified Description of the Timing Features of Accreting X-ray Binaries
• Low frequency QPO spectra and Lense-Thirring precession
• kHz Quasi Periodic Oscillations in Low Mass X-ray Binaries as Probes of General Relativity in the Strong Field Regime
• A Physical Model for the Origin of Quasar Lifetimes
• WATCHDOG: A Comprehensive All-Sky Database of Galactic Black Hole X-ray Binaries
• The "universal" radio/X-ray flux correlation : the case study of the black hole GX 339-4
• Calibration of the Large Area X-ray Proportional Counter (LAXPC) instrument on-board AstroSat
• An abrupt drop in the coherence of the lower kilohertz QPO in 4U 1636-536
• Thermonuclear X-ray bursts
• Large Area X-ray Proportional Counter (LAXPC) Instrument on AstroSat and Some Preliminary Results from its performance in the orbit
• AstroSat/LAXPC reveals the high energy variability of GRS 1915+105 in the chi class
• On the tidal evolution of the orbits of low-mass satellites around black holes
• vKompth: A variable Comptonisation model for low-frequency quasi-periodic oscillations in black-hole X-ray binaries
• Detection of the Irradiated Donor in the LMXBs 4U 1636-536 (=V801 Ara) and 4U 1735-444 (=V926 Sco)
• A physical interpretation of the variability power spectral components in accreting neutron stars
• Eddington-limited X-ray Bursts as Distance Indicators. II. Possible Compositional Effects in Bursts from 4U 1636-536
• RossiXTE monitoring of 4U 1636-53: I. Long-term evolution and kHz Quasi-Periodic Oscillations
• A Compton Up-scattering Model for Soft Lags in the Lower Kilohertz QPO in 4U1608-52
• Large Area X-ray Proportional Counter (LAXPC) in Orbit Performance : Calibration, background, analysis software
• Energy Dependent Time Delays of kHz Oscillations due to Thermal Comptonization
• Evidence for Antipodal Hot Spots During X-ray Bursts From 4U 1636-536
• Achromatic late-time variability in thermonuclear X-ray bursts - an accretion disk disrupted by a nova-like shell?
• KiloHertz quasi-periodic oscillations difference frequency exceeds inferred spin frequency in 4U 1636-53
• Relations between X-ray timing features and spectral parameters of Galactic black hole X-ray binaries
• Studying Frequency Relations of kHz QPOs for 4U 1636-53 and Sco X-1: Observations Confront Theories
• Discovery of the upper kilo-Hz QPO from the X-ray transient Aql X-1
• AstroSat/LAXPC detection of milli-second phenomena in 4U 1728-34
• Frequency Correlations of QPOs Based on a Disk Oscillation Model in Warped Disks
• A population study of type II bursts in the Rapid Burster
• The spectral-timing properties of upper and lower kHz QPOs
• Tidal disruption of small satellites orbiting black holes
• Constraining the size of the Comptonizing medium by modeling the energy dependent time-lags of kHz QPOs of Neutron star system
• Kilohertz QPO Frequency and Flux Decrease in AQL X-1 and Effect of Soft X-ray Spectral Components
• Thermonuclear explosions on neutron stars reveal the speed of their jets
• Kilohertz Quasi-Periodic Oscillations in Low-Mass X-Ray Binaries - a Review
• Thermonuclear X-ray bursts from LMXB 4U 1636$-$536 observed with AstroSat
• Accretion disk signatures in Type I X-ray Bursts: prospects for future missions
• Probing X-ray burst -- accretion disk interaction in low mass X-ray binaries through kilohertz quasiperiodic oscillations
• On the incidence of KHz quasi-periodic oscillations in the neutron star system 4U 1636-53
• Detection of simultaneous QPO triplets in 4U 1728-34 and constraining the neutron star mass and moment of inertia
• Spectro-temporal evolution of 4U 1702-429 using AstroSat-NICER