Chandra Detections of Two Quiescent Black Hole X-Ray Transients
arXiv:astro-ph/0309741 · doi:10.1086/380088
Abstract
Using the Chandra X-ray Observatory, we have detected the black hole transients V4641 Sgr and XTE J1859+226 in their low luminosity, quiescent states. The 0.3-8 keV luminosities are (4.0^(+3.3)_(-2.4))E31 (d/7 kpc)^2 erg/s and (4.2^(+4.8)_(-2.2))E31 (d/11 kpc)^2 erg/s for V4641 Sgr and XTE J1859+226, respectively. With the addition of these 2 systems, 14 out of the 15 transients with confirmed black holes (via compact object mass measurements) now have measured quiescent luminosities or sensitive upper limits. The only exception is GRS 1915+105, which has not been in quiescence since its discovery in 1992. The luminosities for V4641 Sgr and XTE J1859+226 are consistent with the median luminosity of 2E31 erg/s for the systems with previous detections. Our analysis suggests that the quiescent X-ray spectrum of V4641 Sgr is harder than for the other systems in this group, but, due to the low statistical quality of the spectrum, it is not clear if V4641 Sgr is intrinsically hard or if the column density is higher than the interstellar value. Focusing on V4641 Sgr, we compare our results to theoretical models for X-ray emission from black holes in quiescence. Also, we obtain precise X-ray positions for V4641 Sgr and XTE J1859+226 via cross-correlation of the X-ray sources detected near our targets with IR sources in the 2 Micron All-Sky Survey catalog.
arXiv comment4 pages, Accepted by ApJ Letters
References in corpus (30)
- On the Fate of Gas Accreting at a Low Rate onto a Black Hole
- Sources of Relativistic Jets in the Galaxy
- An Overview of the Performance and Scientific Results from the Chandra X-Ray Observatory (CXO)
- 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
- Powerful jets from black hole X-ray binaries in Low/Hard X-ray states
- Radio / X-ray correlation in the low/hard state of GX 339--4
- Convection-Dominated Accretion Flows
- Do X-ray Binary Spectral State Transition Luminosities Vary?
- Optical Observations of GRO J1655-40 in Quiescence I: A Precise Mass for the Black Hole Primary
- A New Model for Black Hole Soft X-ray Transients in Quiescence
- Jet-dominated states: an alternative to advection across black hole event horizons in `quiescent' X-ray binaries
- Large-Scale, Decelerating, Relativistic X-ray Jets from the Microquasar XTE J1550-654
- New Evidence for Black Hole Event Horizons from Chandra
- Dynamical Evidence for a Black Hole in the Microquasar XTE J1550-564
- A Black Hole in the Superluminal source SAX J1819.3-2525 (V4641 Sgr)
- External Compton emission from relativistic jets in Galactic black hole candidates and ultraluminous X-ray sources
- The X-ray Spectra of Black Hole X-ray Novae in Quiescence as Measured by Chandra
- Multiwavelength Spectrum of the Black Hole XTE J1118+480 in Quiescence
- Initial low/hard state, multiple jet ejections and X-ray/radio correlations during the outburst of XTE J1859+226
- X-Ray Emission from the Jets of XTE J1550-564
- The X-ray transient XTE J1859+226 in Outburst & Quiescence
- Coronal X-Ray Emission from the Stellar Companions to Transiently Accreting Black Holes
- XMM-Newton observations of two black hole X-ray transients in quiescence
- An XMM-Newton Observation of 4U1755-33 in Quiescence: Evidence for a Fossil X-Ray Jet
- The bulk kinetic power of the jets of GRS 1915+105
- Long-term X-ray variability and state transition of GX 339-4
- XMM-Newton detection of Nova Muscae 1991 in Quiescence
- Rapid Optical Fluctuations in the Black Hole Binary, V4641 Sgr
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- Compact Object Modeling with the StarTrack Population Synthesis Code
- Global optical/infrared - X-ray correlations in X-ray binaries: quantifying disc and jet contributions
- A radio-emitting outflow in the quiescent state of A0620-00: implications for modelling low-luminosity black hole binaries
- The Distance and Interstellar Sight Line to GX339-4
- Chandra observation of the fast X-ray transient IGR J17544-2619: evidence for a neutron star?
- Discovery of X-ray Jets in the Microquasar H 1743-322
- Revisiting the radio/X-ray flux correlation in the black hole V404 Cyg: from outburst to quiescence
- Revisiting the "Fundamental Plane" of Black Hole Activity at Extremely Low Luminosities
- On the origin of black hole X-ray emission in quiescence: Chandra observations of XTE J1550-564 and H 1743-322
- On the Lack of Thermal Emission from the Quiescent Black Hole XTE J1118+480: Evidence for the Event Horizon
- Inclination Effects and Beaming in Black Hole X-ray Binaries
- Chandra Localizations and Spectra of INTEGRAL Sources in the Galactic Plane
- XMM-Newton observations of the black hole X-ray transient XTE J1650-500 in quiescence
- Using radio emission to detect isolated and quiescent accreting black holes
- The Quiescent X-ray Spectrum of Accreting Black Holes
- XMM-Newton observations of the INTEGRAL X-ray transient J17544-2619
- 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
- On the Chandra X-ray Sources in the Galactic Center
- Limits on the quiescent radio emission from the black hole binaries GRO J1655-40 and XTE J1550-564
- An Anomalous Quiescent Stellar Mass Black Hole
- The Low Quiescent X-Ray Luminosity of the Transient X-Ray Burster EXO 1747-214
- Chandra detection of XTE J1650-500 in quiescence and the minimum luminosity of black hole X-ray binaries
- V4641 Sgr: a candidate precessing microblazar
- Extreme Quiescent Variability of the Transient Neutron Star Low-mass X-ray Binary EXO 1745-248 in Terzan 5
- Spectral evolution of the X-ray nova XTE J1859+226 during its outburst observed by BeppoSAX and RXTE
- Identifying a black hole X-ray transient in M31 with XMM-Newton and Chandra
- Radio emission and jets from microquasars
- Leptonic and hadronic models of high-energy nebula around V4641 Sgr