Multi-Wavelength Coverage of State Transitions in the New Black Hole X-Ray Binary Swift J1910.2-0546

Abstract

Understanding how black holes accrete and supply feedback to their environment is one of the outstanding challenges of modern astrophysics. Swift J1910.2-0546 is a candidate black hole low-mass X-ray binary that was discovered in 2012 when it entered an accretion outburst. To investigate the binary configuration and the accretion morphology we monitored the evolution of the outburst for ~3 months at X-ray, UV, optical (B,V,R,I), and near-infrared (J,H,K) wavelengths using Swift and SMARTS. The source evolved from a hard to a soft X-ray spectral state with a relatively cold accretion disk that peaked at ~0.5 keV. A Chandra/HETG spectrum obtained during this soft state did not reveal signatures of an ionized disk wind. Both the low disk temperature and the absence of a detectable wind could indicate that the system is viewed at relatively low inclination. The multi-wavelength light curves revealed two notable features that appear to be related to X-ray state changes. Firstly, a prominent flux decrease was observed in all wavebands ~1-2 weeks before the source entered the soft state. This dip occurred in (0.6-10 keV) X-rays ~6 days later than at longer wavelengths, which could possibly reflect the viscous time scale of the disk. Secondly, about two weeks after the source transitioned back into the hard state, the UV emission significantly increased while the X-rays steadily decayed. We discuss how these observations may reflect changes in the accretion flow morphology, perhaps related to the quenching/launch of a jet or the collapse/recovery of a hot flow.

arXiv comment8 pages, 5 figures, 1 table. To be published in ApJ

References in corpus (42)

• On the Absorption of X-rays in the Interstellar Medium
• X-ray Properties of Black-Hole Binaries
• Atomic Data for Astrophysics. II. New Analytic Fits for Photoionization Cross Sections of Atoms and Ions
• Central Masses and Broad-Line Region Sizes of Active Galactic Nuclei. II. A Homogeneous Analysis of a Large Reverberation-Mapping Database
• Advection-Dominated Accretion and the Spectral States of Black Hole X-Ray Binaries: Application to Nova Muscae 1991
• Photometric Calibration of the Swift Ultraviolet/Optical Telescope
• The Swift/BAT Hard X-ray Transient Monitor
• The evolution of black hole states
• Ubiquitous equatorial accretion disc winds in black hole soft states
• Optical Continuum and Emission-Line Variability of Seyfert 1 Galaxies
• Global optical/infrared - X-ray correlations in X-ray binaries: quantifying disc and jet contributions
• The Nature of the 10 Kilosecond X-ray Flare in Sgr A*
• The Accretion Disk Wind in the Black Hole GRO J1655-40
• Multi-wavelength observations of the 2002 outburst of GX 339-4: two patterns of X-ray-optical/near-infrared behavior
• Simultaneous Chandra and RXTE Spectroscopy of the Microquasar H~1743-322: Clues to Disk Wind and Jet Formation from a Variable Ionized Outflow
• Swift Observations of the Cooling Accretion Disk of XTE J1817-330
• Hot accretion flow in black hole binaries: a link connecting X-rays to the infrared
• The infrared/X-ray correlation of GX 339-4: Probing hard X-ray emission in accreting black holes
• Multi-wavelength observations of the Galactic black hole transient 4U1543-47 during outburst decay: state transitions and jet contribution
• Formation of the compact jets in the black hole GX 339-4
• Complete Multiwavelength Evolution of Galactic Black Hole Transients During Outburst Decay I: Conditions for "Compact" Jet Formation
• A Swift survey of accretion onto stellar-mass black holes
• Evidence for a compact jet dominating the broadband spectrum of the black hole accretor XTE J1550-564
• A Black Hole Nova Obscured by an Inner Disk Torus
• "Soft X-ray transient" outbursts which aren't soft
• Inclination and relativistic effects in the outburst evolution of black hole transients
• A synchrotron self-Compton -- disk reprocessing model for optical/X-ray correlation in black hole X-ray binaries
• Evidence for quiescent synchrotron emission in the black hole X-ray transient Swift J1357.2-0933
• An evolving compact jet in the black hole X-ray binary MAXI J1836-194
• Optical and Near Infrared Monitoring of the Black-Hole X-ray Binary GX 339-4 During 2002-2010
• 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
• The Disk-Wind-Jet Connection in the Black Hole H 1743-322
• Multiwavelength spectral evolution during the 2011 outburst of the very faint X-ray transient Swift J1357.2-0933
• A Global Study of the Behaviour of Black Hole X-ray Binary Discs
• On Neutral Absorption and Spectral Evolution in X-ray Binaries
• X-ray, Optical and Infrared Observations of GX 339-4 During Its 2011 Decay
• SWIFT J1910.2-0546: A possible black hole binary with a retrograde spin or truncated disk
• Lithium abundance in atmospheres of F- and G-type supergiants and bright giants
• The optical long `period' of LMC X-3
• A unified model for black hole X-ray binary jets ?
• Swift monitoring of Cygnus X-2: investigating the NUV-X-ray connection

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