On the origin of black hole X-ray emission in quiescence: Chandra observations of XTE J1550-564 and H 1743-322

Abstract

We report the results of observations of the black hole binaries XTE J1550-564 and H 1743-322 in their quiescent state using the Chandra X-ray Observatory. Both sources are detected at their faintest level of X-ray emission ever observed with a 0.5-10 keV unabsorbed luminosity of 2 $\times$ 10${}^{32}$ (d/5 kpc)${}^2$ erg s${}^{-1}$ for XTE J1550-564 and 9 $\times$ 10${}^{31}$ (d/8 kpc)${}^2$ erg s${}^{-1}$ for H 1743-322. These luminosities are in the upper range compared to the faintest levels observed in other black hole systems, possibly related to residual accretion for these sources with frequent outbursts. For XTE J1550-564, the Chandra observations also constrain the X-ray spectrum as a fit with an absorbed power-law model yields a photon index of 2.25 $\pm$ 0.08, clearly indicating a softening of the X-ray spectrum at lower luminosities compared to the standard hard state. Similar softening at low luminosity is seen for several black hole transients with orbital periods less than 60 hours. Most of the current models of accreting black holes are able to reproduce such softening in quiescence. In contrast, we find that systems with orbital periods longer than 60 hours appear to have hard spectra in quiescence and their behaviour may be consistent with hardening in quiescence.

arXiv comment23 pages, 6 figures. The Astrophysical Journal, accepted, in press

References in corpus (50)

• On the Fate of Gas Accreting at a Low Rate onto a Black Hole
• A universal radio/X-ray correlation in low/hard state black hole binaries
• A Wavelet-Based Algorithm for the Spatial Analysis of Poisson Data
• A jet model for the broadband spectrum of XTE J1118+480: Synchrotron emission from radio to X-rays in the Low/Hard spectral state
• The Supermassive Black Hole at the Galactic Center
• Radio / X-ray correlation in the low/hard state of GX 339--4
• Convection-Dominated Accretion Flows
• Jet-dominated states: an alternative to advection across black hole event horizons in `quiescent' X-ray binaries
• Dynamical Evidence for a Black Hole in GX 339-4
• Spectral Models of Advection-Dominated Accretion Flows with Winds
• Large-Scale, Decelerating, Relativistic X-ray Jets from the Microquasar XTE J1550-654
• Exploring the Role of Jets in the Radio/X-ray Correlations of GX339-4
• Dynamical Evidence for a Black Hole in the Microquasar XTE J1550-564
• New Evidence for Black Hole Event Horizons from Chandra
• A Black Hole in the Superluminal source SAX J1819.3-2525 (V4641 Sgr)
• Black Hole and Neutron Star Transients in Quiescence
• On the Origin of Radio Emission in the X-ray States of XTE J1650-500 during the 2001-2002 Outburst
• Multi-wavelength observations of the 2002 outburst of GX 339-4: two patterns of X-ray-optical/near-infrared behavior
• Coronal outflow dominated accretion discs: a new possibility for low luminosity black holes?
• An Accretion-Jet Model for Black Hole Binaries: Interpreting the Spectral and Timing Features of XTE J1118+480
• Radio--X-ray Correlation and the "Quiescent State" of Black Hole Sources
• The Distance and Interstellar Sight Line to GX339-4
• Discovery of X-ray Jets in the Microquasar H 1743-322
• The X-ray Spectra of Black Hole X-ray Novae in Quiescence as Measured by Chandra
• Coronal--Temporal Correlations in GX339-4: Hysteresis, Possible Reflection Changes, and Implications for ADAFs
• A Black Hole of > 6 Solar Masses in the X-ray Nova XTE J1118+480
• Multiwavelength Spectrum of the Black Hole XTE J1118+480 in Quiescence
• Multi-wavelength observations of the Galactic black hole transient 4U1543-47 during outburst decay: state transitions and jet contribution
• Constraining X-ray Binary Jet Models via Reflection
• A Multi-Wavelength, Multi-Epoch Study of the Soft X-Ray Transient Prototype, V616 Mon (A0620-00)
• X-Ray Emission from the Jets of XTE J1550-564
• XTE J1550-564: A superluminal ejection during the September 1998 outburst
• Multiwavelength Observations of the Black Hole Candidate XTE J1550-564 during the 2000 Outburst
• The 2002 Outburst of the Black-Hole X-ray Binary 4U 1543-47: Optical and Infrared Light Curves
• Detection of Low-Hard State Spectral and Timing Signatures from the Black Hole X-Ray Transient XTE J1650-500 at Low X-Ray Luminosities
• The radio spectrum of a quiescent stellar mass black hole
• X-Ray Observations of XTE J1550-564 During the Decay of the 2000 Outburst - I. Chandra and RXTE Energy Spectra
• Energisation of interstellar media and cosmic ray production by jets from X-ray binaries
• X-Ray Jet Emission from the Black Hole X-Ray Binary XTE J1550-564 with Chandra in 2000
• The Off State of GX 339-4
• Spectral Models of Convection-Dominated Accretion Flows
• XMM-Newton observations of two black hole X-ray transients in quiescence
• Chandra Detections of Two Quiescent Black Hole X-Ray Transients
• Radio and X-ray observations during the outburst decay of the Black Hole Candidate XTE J1908+094
• Spectral and Temporal Behavior of the Black Hole Candidate XTE J1118+480 as Observed with BeppoSAX
• X-ray Nova XTE J1550-564: Optical Observations
• ASCA Observations of the Jet Source XTE J1748-288
• XMM-Newton detection of Nova Muscae 1991 in Quiescence
• A BeppoSAX view of transient black hole candidates in quiescence
• XMM-Newton observation of 4U 1543-475: the X-ray spectrum of a stellar-mass black-hole at low luminosity

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• Advection-Dominated Accretion and the Black Hole Event Horizon
• The "universal" radio/X-ray flux correlation : the case study of the black hole GX 339-4
• Two stellar-mass black holes in the globular cluster M22
• An Improved Dynamical Model for the Microquasar XTE J1550-564
• The X-ray Spectral Evolution of Galactic Black Hole X-ray Binaries Toward Quiescence
• Correlation between the photon index and X-ray luminosity of black hole X-ray binaries and active galactic nuclei: observations and interpretation
• A Radio-Selected Black Hole X-ray Binary Candidate in the Milky Way Globular Cluster M62
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• Revisiting the radio/X-ray flux correlation in the black hole V404 Cyg: from outburst to quiescence
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• Evidence for a compact jet dominating the broadband spectrum of the black hole accretor XTE J1550-564
• The spectral energy distribution of quiescent black hole X-ray binaries: new constraints from Spitzer
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• Broadband X-ray Spectra of GX 339-4 and the Geometry of Accreting Black Holes in the Hard State
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• Following the 2008 outburst decay of the black hole candidate H1743-322 in X-ray and radio
• Evidence for a change in the X-ray radiation mechanism in the hard state of Galactic black holes
• Near-infrared jet emission in the microquasar XTE J1550-564
• Multiwavelength spectral evolution during the 2011 outburst of the very faint X-ray transient Swift J1357.2-0933
• The 2015 Decay of the Black Hole X-ray Binary V404 Cygni: Robust Disk-Jet Coupling and a Sharp Transition into Quiescence
• On the Properties of Inner Cool Disks in the Hard State of Black Hole X-Ray Transient Systems
• The Maveric Survey: a Red Straggler Binary with an Invisible Companion in the Galactic Globular Cluster M10
• The Quiescent X-ray Spectrum of Accreting Black Holes
• A deep radio survey of hard state and quiescent black hole X-ray binaries
• Constraints on Relativistic Jets in Quiescent Black Hole X-ray Binaries from Broadband Spectral Modeling
• The X-ray properties of the black hole transient MAXI J1659-152 in quiescence
• Understanding X-ray Irradiation in Low-Mass X-ray Binaries directly from their Light-Curves
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• Swift J1357.2-0933: the faintest black hole?
• Zooming in on a sleeping giant: milliarcsecond HSA imaging of the black hole binary V404 Cyg in quiescence
• An X-ray view of the very faint black hole X-ray transient Swift J1357.2-0933 during its 2011 outburst
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• Mass-scaling as a method to constrain outflows and particle acceleration from low-luminosity accreting black holes
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• Jet-dominated quiescent states in black hole X-ray binaries: the case of V404 Cyg
• Jets and the Accretion Flow in Low Luminosity Black Holes
• The MAVERIC survey: A hidden pulsar and a black hole candidate in ATCA radio imaging of the globular cluster NGC 6397
• High-density reflection spectroscopy of black hole X-ray binaries in the hard state
• Using XMM-Newton to study the energy dependent variability of H 1743-322 during its 2014 outburst
• GRS 1739-278 observed at very low luminosity with XMM-Newton and NuSTAR
• Inference on Disk-Jet Connection of MAXI J1836-194: Analysis with the TCAF Solution
• V4641 Sgr: a candidate precessing microblazar
• Uncovering the Nature of the X-ray Transient 4U 1730-22: Discovery of X-ray Emission from a Neutron Star in Quiescence with Chandra
• Evolution of the X-Ray Jets from 4U 1755--33
• Multi-wavelength light curve evolution of Swift J1357.2-0933 during its 2011 outburst
• Toward a Larger Sample of Radio Jets from Quiescent Black Hole X-ray Binaries
• 2016 outburst of H~1743--322: \textit{XMM-Newton} and \textit{NuSTAR} view
• Do stellar-mass and super-massive black holes have similar dining habits?
• A truncated accretion disk in the galactic black hole source H1743-322
• Characterizing black hole variability with nonlinear methods: the case of the X-ray Nova 4U 1543-47
• Modeling the Broadband Spectral Energy Distribution of the Microquasars XTE J1550-564 and H 1743-322
• AstroSat Observation of 2016 Outburst of H 1743-322
• Prospect of polarisation measurements from black hole binaries in their thermal state with a scattering polarimeter
• Jet-dominated quiescent state in black hole X-ray binaries: the cases of A0620--00 and XTE J1118+480
• Implications of the radio spectral index transition in LS I +61°303 for its INTEGRAL data analysis
• Accretion Geometry of Black Hole X-ray Binaries: Insights from X-ray Observations
• The black hole X-ray binary MAXI J1348$-$630 in quiescence
• X-ray Spectra From Weakly Magnetized Accretion Flows