Hydrodynamics of the stream-disk impact in interacting binaries

Abstract

We use hydrodynamic simulations to provide quantitative estimates of the effects of the impact of the accretion stream on disks in interacting binaries. For low accretion rates, efficient radiative cooling of the hotspot region can occur, and the primary consequence of the stream impact is stream overflow toward smaller disk radii. The stream is well described by a ballistic trajectory, but larger masses of gas are swept up and overflow at smaller, but still highly supersonic, velocities. If cooling is inefficient, overflow still occurs, but there is no coherent stream inward of the disk rim. Qualitatively, the resulting structure appears as a bulge extending downstream along the disk rim. We calculate the mass fraction and velocity of the overflowing component as a function of the important system parameters, and discuss the implications of the results for X-ray observations and doppler tomography of cataclysmic variables, low-mass X-ray binaries and supersoft X-ray sources.

16 pages, including 8 figures. 1 color figure as a jpeg. ApJ, in press

Cited by in corpus (60)

• Precessing warped accretion discs in X-ray binaries
• Geometrical constraints on the origin of timing signals from black holes
• Accretion Discs with Strong Toroidal Magnetic Fields
• Multiwavelength Spectrum of the Black Hole XTE J1118+480 in Quiescence
• MAXI J1659-152: The shortest orbital period black-hole transient in outburst
• Kinematics of the ultra-compact helium accretor AM Canum Venaticorum
• The nature of dwarf nova outbursts
• Obscuration effects in Super-Soft-Source X-ray spectra
• Two new Intermediate Polars with a soft X-ray component
• Bowen Fluorescence from the Companion Star in X1822-371
• Observations of the SW Sextantis star DW Ursae Majoris with the Far Ultraviolet Spectroscopic Explorer
• Achromatic late-time variability in thermonuclear X-ray bursts - an accretion disk disrupted by a nova-like shell?
• LS Peg: A Low-Inclination SW Sextantis-Type Cataclysmic Binary with High-Velocity Balmer Emission Line Wings
• X-ray dips and a complex UV/X-ray cross-correlation function in the black hole candidate MAXI J1820+070
• MV Lyrae in Low, Intermediate, and High States
• FUSE Observations of U Geminorum During Outburst and Decline
• The Flared Disc Project: RXTE and ASCA Observations of X 1822-371
• On the multi-periodicities in the X-ray dipper XB 1916-053
• Optical studies of the X-ray transient XTE J2123-058 - II. Phase-resolved spectroscopy
• Dark spot, Spiral waves and the SW Sex behaviour: it is all about UX Ursae Majoris
• The anomalous accretion disk of the Cataclysmic Variable RW Sextantis
• Discrete X-ray Signatures of a Photoionized Plasma Above the Accretion Disk of the Neutron Star EXO 0748-676
• High-Resolution X-Ray Spectroscopy of the Accretion Disk Corona Source 4U 1822-37
• Simulations of spectral lines from an eccentric precessing accretion disc
• The SW Sextantis stars
• Solving the kilo-second QPO problem of the intermediate polar GK Persei
• Late superhumps and the stream-disc impact in IY UMa
• The thermal-radiative wind in low mass X-ray binary H 1743-322: II. iron line predictions from Monte Carlo radiation transfer
• VW Hyi: optical spectroscopy and Doppler tomography
• Spatially-resolved spectra of the accretion disc of the novalike UU Aquarii
• Evidence for Quasi-periodic X-Ray Dips from an Ultraluminous X-Ray Source: Implications for the Binary Motion
• A New Sub-Period-Minimum CV with Partial Hydrogen Depletion and Evidence of Spiral Disk Structure
• KIC 9406652: A laboratory of the tilted disk in cataclysmic variable stars
• The Far Ultraviolet Spectrum of Z Cam in Quiescence
• Optical spectroscopy of the dwarf nova U Geminorum
• On the accretion mode of the intermediate polar V1025 Centauri
• Can the 62 day X-ray period of the Ultraluminous X-ray source M82 X-1 be due to a precessing accretion disk?
• Period derivative of the M15 X-ray Binary AC211/X2127+119
• Phase-resolved optical and X-ray spectroscopy of low-mass X-ray binary X1822-371
• Modeling UX Ursae Majoris: An abundance of challenges
• Phase-Resolved Spectroscopy of Gaia14aae: Line Emission From Near the White Dwarf Surface
• Double-peaked thermonuclear bursts at the soft-hard state transition in the Rapid Burster
• The effects of tidally induced disc structure on white dwarf accretion in intermediate polars
• Prototyping non-equilibrium viscous-timescale accretion theory using LMC X-3
• Hercules X-1: Empirical Models of UV Emission Lines
• The phase 0.5 absorption in SW Sextantis-type cataclysmic variables
• Accretion disc dynamics in extreme mass ratio compact binaries
• Implications of X-Ray Line Variations for 4U1822-371
• Photoionized Lines in the X-ray Spectra of SMC X-1
• The Evolved Main-Sequence Channel: HST and LBT observations of CSS120422:111127+571239
• Multiwavelength study of RX J2015.6+3711: a magnetic cataclysmic variable with a 2-hr spin period
• Stratified Global MHD Models of Accretion Disks in Semi-Detached Binaries
• X-ray spectral variations of Circinus X-1 observed with NICER throughout an entire orbital cycle
• L1 Stream Deflection and Ballistic Launching at the Disk Bow Shock: An Absorption-line Velocity Analysis in Semi-detached Binaries
• Mass transfer in tidally unstable compact binaries
• Broad Observational Perspectives Achieved by the Accreting White Dwarf Sciences in the XMM-Newton and Chandra Eras
• Mass Outflow from the X-ray Binary X2127+119 in M15
• Challenging the disk instability model: I -- The case of YZ LMi
• Large optical modulations during 2018 outburst of MAXI J1820+070 reveal evolution of warped accretion disc through X-ray state change
• Investigating the low-flux states in six Intermediate Polars