A Unified Description of the Timing Features of Accreting X-ray Binaries

Abstract

We study an empirical model for a unified description of the power spectra of accreting neutron stars and black holes. This description is based on a superposition of multiple Lorentzians and offers the advantage that all QPO and noise components are dealt with in the same way, without the need of deciding in advance the nature of each component. This approach also allows us to compare frequencies of features with high and low coherences in a consistent manner and greatly facilitates comparison of power spectra across a wide range of source types and states. We apply the model to six sources, the low-luminosity X-ray bursters 1E 1724-3045, SLX 1735-269 and GS 1826-24, the high-latitude transient XTE J1118+480, the bright system Cir X-1, and the Z source GX 17+2. We find that it provides a good description of the observed spectra, without the need for a scale-free (1/f) component. We update previously reported correlations between characteristic frequencies of timing features in the light of this new approach and discuss similarities between different types of systems which may point towards similar underlying physics.

13 pages, to appear in The Astrophysical Journal

Cited by in corpus (386)

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• Detection of QPO Soft Lag during Outburst of Swift J1727.8-1613: Estimation of Instrinsic Parameters from Spectral Study
• Millihertz Quasi-periodic Optical Oscillations in 4U 0614+091
• Modelling the energy dependencies of X-ray quasi-periodic oscillations in accreting compact objects
• AstroSat and NuSTAR observations of XTE J1739-285 during the 2019-2020 outburst
• Alternation of the flickering morphology between the high and low state in MV Lyr
• Detection of a strong ~2.5 Hz modulation in the Newly Discovered Millisecond Pulsar MAXI J1816-195
• Evolution of the Comptonizing medium of the black-hole candidate Swift J1727.8$-$1613 along the hard to hard-intermediate state transition using NICER
• The aperiodic timing behaviour of the accretion-driven millisecond pulsar SAX J1808.4-3658
• Evolution of the Accretion Disk and Corona During the Outburst of the Neutron Star Transient MAXI J1807+132
• A $\sim$100 mHz QPO in the X-ray emission from IGR J17361-4441
• Mass Measurements of AGN from Multi-Lorentzian Models of X-ray Variability. I. Sampling Effects in Theoretical Models of the rms^2-M_BH Correlation
• Evidence for a change in the radiation mechanism in the hard state of GRO J1655-40. Hysteresis in the broad-band noise components
• Probing black-hole accretion through time variability
• Periodicity search for Pulsar Binaries with TESS
• The Cross Spectral Time lags evolution along branches in XTE J1701-462
• Swift, RXTE, and INTEGRAL observation of Swift J1922.7-1716
• The ongoing spin-down episode of 4U 1626-67
• Timing Analysis of V404 Cyg during Its Brightest Outburst with INTEGRAL/SPI
• Evolution of QPOs in GX 339-4 and EXO 1846-031 with Insight-HXMT and NICER
• X-ray spectral-timing variability of 1A 0535+262 during the 2020 giant outburst
• Timing Properties of Shocked Accretion Flows around Neutron Stars in Presence of Cooling
• Sidebands to mHz QPOs in 4U 1626$-$67 in the second spin-down state
• Studies of Quasi Periodic Oscillations in the Black Hole Transient XTE J 1817-330
• The kHz QPOs as a probe of the X-ray color-color diagram and accretion-disk structure for the atoll source 4U 1728-34
• The emission positions of kHz QPOs and Kerr spacetime influence
• The QPO states of 4U 1630-47
• Frequency Resolved Spectroscopy of XB 1323-619 Using XMM-Newton data: Detection of a Reflection Region in the Disk
• A Hidden Pulse: Uncovering a New Timing Signal in Cygnus X-1 with AstroSat
• Kilohertz quasi-periodic oscillations in neutron-star X-ray binaries: Flattening of the lag spectrum with increasing luminosity
• Black-hole states in external galaxies
• Bridging the Gap: OPTICAM Reveals the Hidden Spin of the WZ Sge Star GOTO 065054.49+593624.51
• Characterisation of the X-ray point source variability in the eROSITA south ecliptic pole field
• The accretion rate independence of horizontal branch oscillation in XTE J1701-462
• Spectro-temporal Investigation of Quasi-periodic Oscillations From Black Hole X-ray Binary 4U 1630-472 Using $\text{NICER}$
• A model for upper kHz QPO coherence of accreting neutron star
• Probing the accretion disc structure by the twin kHz QPOs and spins of neutron stars in LMXBs
• Detection of a Type-C QPO during the soft-to-hard transition in Swift J1727.8-1613
• A NuSTAR study of quasi-periodic oscillations from the ultraluminous X-ray sources in M82
• Black-hole X-ray binary Swift J1727.8$-$1613 shows simultaneous Type-B and Type-C quasi-periodic oscillations across the hard-intermediate and soft-intermediate states
• How To Distinguish Neutron Star and Black Hole X-ray Binaries? Spectral index and Quasi-Periodic Oscillation Frequency Correlation
• Statistical Analysis for the Q-factor of twin kHz QPOs
• Outer disc edge: properties of low frequency aperiodic variability in ultracompact interacting binaries
• Quasi-periodic pulse amplitude modulation in the accreting millisecond pulsar IGR J00291+5934
• AstroSat View of Transient Low-mass X-ray Binary XTE J1701-462: Spectral and Temporal Evolution along the Z-track
• Swift J1753.5-0127 : Understanding the accretion geometry through frequency resolved spectroscopy
• Quasi-quantized Disk Structure around Rotating Neutron Stars
• The mHz quasi-regular modulations of 4U 1630--47 during its 1998 outburst
• Low frequency QPOs and possible change in the accretion geometry during the outbursts of Aquila X$-$1
• The kHz QPOs of Neutron Stars and Millisecond Pulsars and Implications
• Rms-flux relation of Cyg X-1 with RXTE: dipping and nondipping cases
• Frequency Variation of the Kilohertz Quasi-periodic Oscillations and the Flux of the Band-limited Noise in Scorpius X-1
• Basics of Fourier Analysis for High-Energy Astronomy
• Fast variability from X-ray binaries
• Generalized Flows around Neutron Stars
• XMM-Newton view of a hard X-ray transient IGR J17497-2821
• The first extragalactic ultra-compact X-ray binary : a candidate black hole-white dwarf system
• Application of the relativistic precession model to the accreting millisecond X-ray pulsar IGR J17511-3057
• Characteristics of the High-frequency Humps in the Black hole X-ray Binary Swift J1727.8--1613
• Study on Correlations between the Twin Kilohertz Quasi-periodic Oscillations in Low-mass X-ray Binaries
• QPOML: A Machine Learning Approach to Detect and Characterize Quasi-Periodic Oscillations in X-ray Binaries
• On The Nature of Einstein Probe Transient EP250916a: Insights from X-ray, Optical, and Radio Observations
• Multi-mission view of extragalactic black hole X-ray binaries LMC X-1 and LMC X-3: evolution of broadband spectral features
• Power spectral properties of the soft spectral states in four black hole transients
• Broadband variability study of MAXI J1631-479 in its Hard-Intermediate State observed with Insight-HXMT
• The stochastic X-ray variability of the accreting millisecond pulsar IGR J17062-6143
• Probing accretion dynamics and spin evolution in the X-ray pulsar RX J0520.5-6932 during its 2024 Outburst
• QPO signatures of disk restoration after type-I X-ray bursts from 4U~1636$-$536
• The full evolution of the type-C QPO in MAXI J1348-630 revealed by Insight-HXMT
• Noise components from black-hole binaries in our galaxy
• The NICER view of Scorpius X-1
• Searching for Spider-Like Pulsars from TESS Ellipsoidal Lightcurves with X-ray counterparts
• Recurrent Instability in LMXB Accretion Disks: How Strange is GRS 1915+105?
• Lags of the KiloHertz Quasi-Periodic Oscillations in the transient source XTE J1701$-$462
• An Insight-HXMT View of the Evolution of the Type-C Quasiperiodic Oscillation during the Flaring State of Swift J1727.8-1613