Julien Malzac
A jet model for the fast IR variability of the black hole X-ray binary GX 339-4
Malzac, Julien; Kalamkar, Maithili; Vincentelli, Federico; Vue, Alexis; Drappeau, Samia; Belmont, Renaud; Casella, Piergiorgio; Clavel, Maïca; Corbel, Stphane; Coriat, Mickaël; Dornic, Damien; Ferreira, Jonathan; Henri, Gilles; Maccarone, Thomas J; Marcowith, Alexandre; O’Brien, Kieran; Péault, Mathias; Petrucci, Pierre-Olivier; Rodriguez, Jérome; Russell, David M; Uttley, Phil
Authors
Maithili Kalamkar
Federico Vincentelli
Alexis Vue
Samia Drappeau
Renaud Belmont
Piergiorgio Casella
Maïca Clavel
Stphane Corbel
Mickaël Coriat
Damien Dornic
Jonathan Ferreira
Gilles Henri
Thomas J Maccarone
Alexandre Marcowith
Dr Kieran Obrien kieran.s.obrien@durham.ac.uk
Associate Professor
Mathias Péault
Pierre-Olivier Petrucci
Jérome Rodriguez
David M Russell
Phil Uttley
Abstract
Using the simultaneous Infra-Red (IR) and X-ray light curves obtained by Kalamkar et al., we perform a Fourier analysis of the IR/X-ray timing correlations of the black hole X-ray binary (BHB) GX 339-4. The resulting IR vs X-ray Fourier coherence and lag spectra are similar to those obtained in previous studies of GX 339-4 using optical light curves. In particular, above 1 Hz, the lag spectrum features an approximately constant IR lag of about 100 ms. We model simultaneously the radio to IR Spectral Energy Distribution (SED), the IR Power Spectral Density (PSD), and the coherence and lag spectra using the jet internal shock model ISHEM assuming that the fluctuations of the jet Lorentz factor are driven by the accretion flow. It turns out that most of the spectral and timing features, including the 100-ms lag, are remarkably well-reproduced by this model. The 100-ms time-scale is then associated with the travel time from the accretion flow to the IR emitting zone. Our exploration of the parameter space favours a jet which is at most mildly relativistic (¯ < 3), and a linear and positive relation between the jet Lorentz factor and X-ray light curve i.e. (t) − 1∝LX(t). The presence of a strong Low-Frequency Quasi-Periodic Oscillation (LFQPO) in the IR light curve could be caused by jet precession driven by Lense–Thirring precession of the jet-emitting accretion flow. Our simulations confirm that this mechanism can produce an IR LFQPO similar to that observed in GX 339-4.
Citation
Malzac, J., Kalamkar, M., Vincentelli, F., Vue, A., Drappeau, S., Belmont, R., …Uttley, P. (2018). A jet model for the fast IR variability of the black hole X-ray binary GX 339-4. Monthly Notices of the Royal Astronomical Society, 480(2), 2054-2071. https://doi.org/10.1093/mnras/sty2006
Journal Article Type | Article |
---|---|
Acceptance Date | Jul 23, 2018 |
Online Publication Date | Jul 30, 2018 |
Publication Date | Oct 21, 2018 |
Deposit Date | Sep 30, 2018 |
Publicly Available Date | Mar 28, 2024 |
Journal | Monthly Notices of the Royal Astronomical Society |
Print ISSN | 0035-8711 |
Electronic ISSN | 1365-2966 |
Publisher | Royal Astronomical Society |
Peer Reviewed | Peer Reviewed |
Volume | 480 |
Issue | 2 |
Pages | 2054-2071 |
DOI | https://doi.org/10.1093/mnras/sty2006 |
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Copyright Statement
This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society © 2018 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.
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