Spectra and time variability of galactic black-hole X-ray sources in the low/hard state
arXiv:astro-ph/0405569 · doi:10.1051/0004-6361:20041002
Abstract
we propose a jet model for the low/hard state of black-hole X-ray sources which explains a) the X-ray spectra, b) the timelag spectra, c) the increase in the amplitude (QPO and high frequency) with increasing photon energy, and d) the narrowing of the autocorrelation function with increasing photon energy. The model (in its simplest form) assumes that i) there is a uniform magnetic field along the axis of the jet, ii) the electron density in the jet is inversely proportional to distance and iii) the jet is "hotter" near its center than at its periphery. We have performed Monte Carlo simulations of Compton upscattering of soft photons from the accretion disk and have found power-law high-energy spectra with photon number index in the range 1.5-2, power-law timelags versus Fourier frequency with index ~0.8, and an increase of the rms amplitude of the variability and a narrowing of the autocorrelation function with photon energy as they have been observed in Cygnus X-1.
arXiv comment8 pages, 8 figures, accepted for publication in A&A
References in corpus (30)
- Advection-Dominated Accretion: A Self-Similar Solution
- A universal radio/X-ray correlation in low/hard state black hole binaries
- Thermal Equilibria of Accretion Disks
- A Unified Description of the Timing Features of Accreting X-ray Binaries
- A jet model for the broadband spectrum of XTE J1118+480: Synchrotron emission from radio to X-rays in the Low/Hard spectral state
- RXTE Observation of Cygnus X-1: II. Timing Analysis
- Powerful jets from black hole X-ray binaries in Low/Hard X-ray states
- A relativistic jet from Cygnus X-1 in the low/hard X-ray state
- A Model for the X-Ray and UV Emission from Seyfert Galaxies and Galactic Black Holes
- Soft state of Cygnus X-1: stable disk and unstable corona
- On the interpretation of the multicolour disc model for black hole candidates
- X-Ray Variability Coherence: How to Compute it, What it Means, and How it Constrains Models of Cyg X-1 and GX 339-4
- Near-infrared synchrotron emission from the compact jet of GX339-4
- Are There Three Peaks in the Power Spectra of GX 339-4 and Cyg X-1?
- Spectral evolution of magnetic flares and time lags in accreting black hole sources
- Long Term Variability of Cyg X-1 I. X-ray spectral-temporal correlations in the hard state
- ON THE GEOMETRY OF THE X-RAY EMITTING REGION IN SEYFERT GALAXIES
- X-ray Emission Processes in Radio Jets
- External Compton emission from relativistic jets in Galactic black hole candidates and ultraluminous X-ray sources
- Rapid infrared flares in GRS 1915+105 : evidence for infrared synchrotron emission
- Recurrent microblazar activity in Cygnus X-1?
- On The Jets Associated with Galactic Superluminal Sources
- Time Domain Analysis of Variability in Cygnus X-1: Constraints on the Emission Models
- Energy and time-lag spectra of black-hole systems in the low state
- Understanding Spectral Variability and Time Lags in Accreting Black Holes
- Measurement of Hard Lags and Coherences in the X-Ray Flux of Accreting Neutron Stars and Comparison with Accreting Black Holes
- Probing the Structure of Accreting Compact Sources Through X-Ray Time Lags and Spectra
- The Energy Dependence of the Aperiodic Variability for Cygnus X-1, GX 339-4, GRS 1758-258, & 1E 1740.7-2942
- Modeling The Time Variability of Accreting Compact Sources
- Orbital Comptonization in accretion disks around black holes
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- X-ray reverberation around accreting black holes
- Coupling between the accreting corona and the relativistic jet in the micro quasar GRS 1915+105
- vKompth: A variable Comptonisation model for low-frequency quasi-periodic oscillations in black-hole X-ray binaries
- Long term variability of Cygnus X-1: VI. Energy-resolved X-ray variability 1999-2011
- A jet model for Galactic black-hole X-ray sources: Some constraining correlations
- Phase-Resolved Spectroscopy of Type B Quasi-Periodic Oscillations in GX 339-4
- Spectra of black-hole binaries in the low/hard state: from radio to X-rays
- Energetics of a black hole: constraints on the jet velocity and the nature of the X-ray emitting region in Cyg X-1
- Accretion and ejection in black-hole X-ray transients
- Multi-Wavelength Variability. Accretion and Ejection at the Fastest Timescales
- The evolution of the X-ray phase lags during the outbursts of the black hole candidate GX 339-4
- The time-lag -- photon-index correlation in GX 339--4
- From Multiwavelength to Mass Scaling: Accretion and Ejection in Microquasars and AGN
- A quantitative explanation of the type-B QPOs in GX 339-4
- The photon-index - time-lag correlation in black-hole X-ray binaries
- Time-Dependent Synchrotron and Compton Spectra from Jets of Microquasars
- The X-ray Power Spectral Density Function of the Seyfert Active Galactic Nucleus NGC 7469
- A jet model for Galactic black-hole X-ray sources: the cutoff energy-phase-lag correlation
- A global study of Type B quasi-periodic oscillation in black hole X-ray binaries
- On the origin of the hard X-ray tail in neutron-star X-ray binaries
- Phase-resolved spectral analysis of the 11 millihertz quasi-periodic oscillation in the black-hole candidate H1743-322
- The energy distribution of electrons in radio jets
- A quantitative explanation of the radio--X-ray correlation in black-hole X-ray binaries
- Probing black-hole accretion through time variability
- Sunyaev-Zel'dovich anisotropy due to Primordial black holes
- Timing Analysis of V404 Cyg during Its Brightest Outburst with INTEGRAL/SPI
- The role of outflows in black-hole X-ray binaries
- Exploring the role of composition and mass-loading on the properties of hadronic jets
- Modeling the Spectrum of IGR J17177-3656