The origin of UV/optical emission in the black hole low-mass X-ray binary Swift J1753.5-0127

Abstract

The emission from the accreting black holes (BHs) in low-mass X-ray binaries (LMXBs) covers a broad energy band from radio to X-rays. Studying the correlations between emission in different energy bands during outbursts can provide valuable information about the accretion process. We analyse the simultaneous optical, ultraviolet (UV) and X-ray data of the BH-LMXB Swift J1753.5-0127 during its $\sim$ 12-year long outburst with the {\it Neil Gehrels Swift Observatory}. We find that the UV/optical and X-ray emission are strongly correlated during the hard states of the outburst. We fit the relation with a power-law function $F_{UV/optical}\propto F_X^{\beta }$ and find that the power-law index $\beta$ increases from $\sim$ 0.24 to $\sim$ 0.33 as the UV/optical wavelength decreases from $\sim$ 5400 Å (V) to $\sim$ 2030 Å (UVW2). We explore the possible reasons for this and suggest that in Swift J1753.5-0127 the UV/optical emission is dominated by a viscously heated accretion disc at large radii. We find that the data that deviate from the correlation correspond to the low-intensity peaks appeared in the X-ray band during the outburst, and suggest that these deviations are driven by the emission from the inner part of the accretion disc.

arXiv comment15 pages, 8 figures, 1 table, accepted by MNRAS

References in corpus (61)

• Astropy: A Community Python Package for Astronomy
• The Astropy Project: Building an inclusive, open-science project and status of the v2.0 core package
• On the Absorption of X-rays in the Interstellar Medium
• Correcting for the Effects of Interstellar Extinction
• X-ray Properties of Black-Hole Binaries
• Methods and results of an automatic analysis of a complete sample of Swift-XRT observations of GRBs
• Advection-Dominated Accretion: Underfed Black Holes and Neutron Stars
• Towards a unified model for black hole X-ray binary jets
• Modelling the behaviour of accretion flows in X-ray binaries
• Photometric Calibration of the Swift Ultraviolet/Optical Telescope
• The disc instability model of dwarf-novae and low-mass X-ray binary transients
• A universal radio/X-ray correlation in low/hard state black hole binaries
• Correlated X-ray Spectral and Timing Behavior of the Black Hole Candidate XTE J1550-564: A New Interpretation of Black Hole States
• The Properties of X-Ray and Optical Light Curves of X-Ray Novae
• 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 Non-Linear Dependence of Flux on Black Hole Mass and Accretion Rate in Core Dominated Jets
• The disc instability model for X-ray transients: evidence for truncation and irradiation
• WATCHDOG: A Comprehensive All-Sky Database of Galactic Black Hole X-ray Binaries
• Radiatively efficient accreting black holes in the hard state: the case study of H1743-322
• Global optical/infrared - X-ray correlations in X-ray binaries: quantifying disc and jet contributions
• Transient Black Hole Binaries
• A review of the disc instability model for dwarf novae, soft X-ray transients and related objects
• Jet-dominated advective systems: radio and X-ray luminosity dependence on the accretion rate
• The radio/X-ray domain of black hole X-ray binaries at the lowest radio luminosities
• Potential Kick Velocity distribution of black hole X-ray binaries and implications for natal kicks
• A Prominent Accretion Disk in the Low-Hard State of the Black Hole Candidate SWIFT J1753.5-0127
• Swift Observations of the Cooling Accretion Disk of XTE J1817-330
• Jet spectral breaks in black hole X-ray binaries
• Gaia DR2 Distances and Peculiar Velocities for Galactic Black Hole Transients
• Swift J1753.5-0127: The Black Hole Candidate with the shortest orbital period
• Accretion flow dynamics of MAXI J1836-194 during its 2011 outburst from TCAF solution
• Multiwavelength spectral evolution during the 2011 outburst of the very faint X-ray transient Swift J1357.2-0933
• SWIFT J1753.5-0127: a surprising optical/X-ray cross-correlation function
• The binary millisecond pulsar PSR J1023+0038 during its accretion state - I. Optical variability
• Investigating the disc-jet coupling in accreting compact objects using the black hole candidate Swift J1753.5-0127
• Failed-Transition outbursts in Black hole low-mass X-ray binaries
• A dichotomy between the hard state spectral properties of black hole and neutron star X-ray~binaries
• A complex state transition from the black hole candidate Swift J1753.5-0127
• Accretion Flow Dynamics of MAXI J1659-152 from the Spectral Evolution Study of its 2010 Outburst using the TCAF Solution
• Echo-Mapping of Swift J1753.5-0127
• Bright mini-outburst ends the 12-year long activity of the black hole candidate Swift J1753.5-0127
• A low-luminosity soft state in the short period black hole X-ray binary Swift J1753.5-0127
• Multiwavelength Observations of Swift J1753.5-0127
• Expanding hot flow in the black hole binary SWIFT J1753.5-0127: evidence from optical timing
• Discovery of correlated optical/X-ray quasi-periodic oscillations in black hole binary SWIFT J1753.5-0127
• The radio/X-ray correlation in X-ray binaries - Insights from a hard X-ray perspective
• The hybrid radio/X-ray correlation of the black hole transient MAXI J1348-630
• Up and Down the Black Hole Radio/X-ray Correlation: the 2017 mini-outbursts from Swift J1753.5-0127
• Disk Diffusion Propagation Model for the Outburst of XTE J1118+480
• A late jet rebrightening revealed from multi-wavelength monitoring of the black hole candidate XTE J1752-223
• WISE Detection of the Galactic Low-Mass X-Ray Binaries
• No evidence for a low-mass black hole in Swift J1753.5-0127
• A 420 day X-ray/optical modulation and extended X-ray dips in the short-period transient Swift J1753.5-0127
• On the Optical -- X-ray correlation from outburst to quiescence in Low Mass X-ray Binaries: the representative cases of V404 Cyg and Cen X-4
• The black hole X-ray transient Swift J1357.2-0933 as seen with Swift and NuSTAR during its 2017 outburst
• The Accreting Black Hole Swift J1753.5-0127 from Radio to Hard X-Ray
• Repeated Short-term Spectral Softening in the Low/Hard State of the Galactic Black-Hole Candidate Swift J1753.5-0127
• The connection between the UV/optical and X-ray emission in the neutron star low-mass X-ray binary Aql X-1
• Optical and Near-Infrared Spectroscopy of the Black Hole Swift J1753.5-0127
• The Curious Case of Swift J1753.5-0127: A Black Hole Low-mass X-ray Binary Analogue to Z Cam Type Dwarf Novae
• Swift monitoring of Cygnus X-2: investigating the NUV-X-ray connection

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