Millisecond Oscillations in X-Ray Binaries

Abstract

The first millisecond X-ray variability phenomena from accreting compact objects have recently been discovered with the Rossi X-ray Timing Explorer. Three new phenomena are observed from low-mass X-ray binaries containing low-magnetic-field neutron stars: millisecond pulsations, burst oscillations and kiloHertz quasi-periodic oscillations. Models for these new phenomena involve the neutron star spin, and orbital motion closely around the neutron star and rely explicitly on our understanding of strong gravity and dense matter. I review the observations of these new neutron-star phenomena and possibly related ones in black-hole candidates, and describe the attempts to use them to perform measurements of fundamental physical interest in these systems.

40 pages, 17 figures, 4 tables - submitted to the Annual Review of Astronomy and Astrophysics; to appear September 2000

References in corpus (4)

• Hard X-ray Emission From Low Mass X-ray Binaries
• The optical counterpart of SAX J1808.4-3658, the transient bursting millisecond X-ray pulsar
• Correlated Timing and Spectral Variations of the Soft X-ray Transient Aquila X-1: Evidence for an Atoll classification
• Discovery of a ~1 Hz quasi-periodic oscillation in the low-mass X-ray binary 4U 1746-37

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• Modeling fast X-ray variability around an accreting black hole
• Modeling the upper kHz QPOs of 4U 1728-34 with X-ray reverberation
• Statistical Analysis for the Q-factor of twin kHz QPOs
• Morphological analysis on the coherence of kHz QPOs
• A QPO in NGC 4945 from Archival RXTE Data
• Detection of the thermonuclear X-ray bursts and dips from the X-ray binary 4U 1323-62 with AstroSat/LAXPC
• Simultaneous optical and X-ray high speed photometry of Cyg X-2
• A possible explanation of the parallel tracks in kilohertz quasi-periodic oscillations from low-mass-X-ray binaries
• General description of Dirac spin-rotation effect with relativistic factor
• Quasi Periodic Oscillations (QPOs) and frequencies in an accretion disk and comparison with the numerical results from non-rotating black hole computed by the GRH code
• AstroSat Detection of a Quasi-periodic Oscillation at ~ 42 Hz in Cygnus X-2
• The kHz QPOs of Neutron Stars and Millisecond Pulsars and Implications
• Resonance conditions
• Forced Oscillations in Fluid Tori and Quasi-Periodic Oscillations
• Association of the 3:2 HFQPO Pairs with the Broad Fe K Line in XTE J1550-564 and GRO J1655-40
• First IBIS results on the high energy emission of Cyg X-2
• Can Any "Invariants" Be Revealed in Quasi-periodic Phenomena Observed From Sco X-1?
• Comparison between Windowed FFT and Hilbert-Huang Transform for Analyzing Time Series with Poissonian Fluctuations: A Case Study
• Fourier resolved spectroscopy of 4U 1728-34: New Insights into Spectral and Temporal Properties of Low-Mass X-ray Binaries
• X-ray Pulsars
• The rms-flux relations in different branches in Cyg X-2
• Quasi-Periodic X-ray Oscillations in the Source Sco X-1
• Self-Trapping of G-Mode Oscillations in Relativistic Thin Disks, Revisited II: Revision of Boundary Condition
• QPO frequency derivative - frequency correlation indicates non-Keplerian boundary layer with a maximum in rotation rate
• Local Analysis of Nonlinear Oscillations of Thin Accretion Disks
• On The Low Frequency Quasi Periodic Oscillations of X-ray Sources
• The onset of General Relativity: Gravitationally redshifted emission lines
• Study on Correlations between the Twin Kilohertz Quasi-periodic Oscillations in Low-mass X-ray Binaries
• Large frequency drifts during Type I X-ray bursts
• Orbital Motion in Spacetimes Influenced by the Presence of Scalar and Electromagnetic Fields
• Constraints on the magnetic field structure in accreting compact objects from aperiodic variability
• Probing Lorentz-violating effects via precession and accretion disk images in a rotating bumblebee spacetime
• Quasi-periodic oscillatory motion of particles orbiting a distorted deformed compact object
• The Broad-band Noise Characteristics of Selected Anomalous X-Ray Pulsars and Soft Gamma-ray Repeaters