Massive black hole binary mergers within sub-pc scale gas discs

Abstract

[ABRIDGED] We study supermassive black hole binary mergers driven by angular momentum loss to small-scale gas discs. Such binaries form after major galaxy mergers, but their fate is unclear since hardening through stellar scattering becomes very inefficient at sub-parsec distances. Gas discs may dominate binary dynamics on these scales, and promote mergers. Using numerical simulations, we investigate the evolution of the orbits of binaries embedded within geometrically thin gas discs. Our simulations directly resolve angular momentum transport within the disc, which at the radii of interest is likely dominated by disc self-gravity. We show that the binary decays at a rate which is in good agreement with analytical estimates, while the eccentricity grows. Saturation of eccentricity growth is not observed up to values e > 0.35. Accretion onto the black holes is variable, and is roughly modulated by the binary orbital frequency. Scaling our results, we analytically estimate the maximum rate of binary decay that is possible without fragmentation occuring within the surrounding gas disc, and compare that rate to an estimate of the stellar dynamical hardening rate. For binary masses in the range 10^5 < M/Msun < 10^8 we find that decay due to gas discs may dominate for separations below a ~ 0.01--0.1 pc, where the disc is optically thick. The minimum merger time scale is shorter than the Hubble time for M < 10^7 Msun. This implies that gas discs could commonly attend relatively low mass black hole mergers, and that a significant population of binaries might exist at separations of a few hundredths of a pc, where the combined decay rate is slowest. For more massive binaries, we suggest that scattering of stars formed within a fragmenting gas disc could act as a significant additional sink of binary angular momentum.

11 pages, 13 figures. MNRAS, accepted. v2: minor changes

References in corpus (41)

• The cosmological simulation code GADGET-2
• A Relationship Between Nuclear Black Hole Mass and Galaxy Velocity Dispersion
• Modeling feedback from stars and black holes in galaxy mergers
• Gasdynamics and Starbursts in Major Mergers
• Nonlinear Outcome of Gravitational Instability in Cooling, Gaseous Disks
• The Assembly and Merging History of Supermassive Black Holes in Hierarchical Models of Galaxy Formation
• Using FU Orionis Outbursts to Constrain Self-Regulated Protostellar Disk Models
• The Centers of Early-Type Galaxies with HST. IV. Central Parameter Relations
• The Two Young Star Disks in the Central Parsec of the Galaxy: Properties, Dynamics and Formation
• Rosseland and Planck Mean Opacities for Protoplanetary Discs
• A Compact Supermassive Binary Black Hole System
• Selfgravity and QSO disks
• Evolution of massive binary black holes
• Accretion during the merger of supermassive black holes
• Stellar disk in the galactic center -- a remnant of a dense accretion disk?
• An Eccentric Circumbinary Accretion Disk and the Detection of Binary Massive Black Holes
• A Fundamental Relation Between Compact Stellar Nuclei, Supermassive Black Holes, and Their Host Galaxies
• Investigating fragmentation conditions in self-gravitating accretion discs
• Starbursts near supermassive black holes: young stars in the Galactic Center, and gravitational waves in LISA band
• On the Dynamical Foundations of Alpha Disks
• Rapid Formation of Supermassive Black Hole Binaries in Galaxy Mergers with Gas
• The Role of Gas in the Merging of Massive Black Holes in Galactic Nuclei. II. Black Hole Merging in a Clumpy Disk
• Long Term Evolution of Massive Black Hole Binaries
• The Afterglow of Massive Black Hole Coalescence
• Supermassive black hole binaries in gaseous and stellar circumnuclear discs: orbital dynamics and gas accretion
• The evolution of a supermassive binary caused by an accretion disc
• Eccentricity of supermassive black hole binaries coalescing from gas rich mergers
• Simulations of star formation in a gaseous disc around sgr A* - a failed AGN
• Satellites in Discs: Regulating the Accretion Luminosity
• Nonlinear Outcome of Gravitational Instability in Disks with Realistic Cooling
• Binary Black Hole Mergers from Planet-like Migrations
• Fuelling Active Galactic Nuclei
• Galactic Centre stellar winds and Sgr A* accretion
• Self-gravitating accretion disk in Sgr A* few million years ago: was Sgr A* a failed quasar?
• Non-linear fluid dynamics of eccentric discs
• Prompt Shocks in the Gas Disk Around a Recoiling Supermassive Black Hole Binary
• Dynamics of galaxy cores and supermassive black holes
• Pre-Merger Localization of Gravitational-Wave Standard Sirens With LISA: Triggered Search for an Electromagnetic Counterpart
• Eccentricity evolution of giant planet orbits due to circumstellar disk torques
• Self-gravitating fragmentation of eccentric accretion disks
• Resolving Gas Dynamics in the Circumnuclear Region of a Disk Galaxy in a Cosmological Simulation

Cited by in corpus (303)

• LSST: from Science Drivers to Reference Design and Anticipated Data Products
• Black holes, gravitational waves and fundamental physics: a roadmap
• Rapid and Bright Stellar-mass Binary Black Hole Mergers in Active Galactic Nuclei
• Assisted Inspirals of Stellar Mass Black Holes Embedded in AGN Disks: Solving the "Final AU Problem"
• How Do Massive Black Holes Get Their Gas?
• The NANOGrav 11-year Data Set: Pulsar-timing Constraints On The Stochastic Gravitational-wave Background
• Formation and Evolution of Compact Object Binaries in AGN Disks
• Binary Black Hole Accretion From a Circumbinary Disk: Gas Dynamics Inside the Central Cavity
• The Population of Viscosity- and Gravitational Wave-Driven Supermassive Black Hole Binaries Among Luminous AGN
• The Astrophysics of Nanohertz Gravitational Waves
• Three Dimensional MHD Simulation of Circumbinary Accretion Disks: Disk Structures and Angular Momentum Transport
• Accretion into the Central Cavity of a Circumbinary Disk
• The Quest for Dual and Binary Supermassive Black Holes: A Multi-Messenger View
• A Large Systematic Search for Recoiling and Close Supermassive Binary Black Holes
• Massive Black Hole Binary Mergers in Dynamical Galactic Environments
• Hydrodynamics of circumbinary accretion: Angular momentum transfer and binary orbital evolution
• Electromagnetic Counterparts to Black Hole Mergers Detected by LIGO
• Efficient Merger of Binary Supermassive Black Holes in Merging Galaxies
• A Candidate Sub-Parsec Supermassive Binary Black Hole System
• Limiting eccentricity of sub-parsec massive black hole binaries surrounded by self-gravitating gas discs
• Viscous Hydrodynamics Simulations of Circumbinary Accretion Discs: Variability, Quasi-Steady State, and Angular Momentum Transfer
• Tearing up the disc: misaligned accretion on to a binary
• Post-Circular Expansion of Eccentric Binary Inspirals: Fourier-Domain Waveforms in the Stationary Phase Approximation
• Black hole mergers: can gas discs solve the `final parsec' problem?
• Fast coalescence of massive black hole binaries from mergers of galactic nuclei: implications for low-frequency gravitational-wave astrophysics
• Massive binary black holes in galactic nuclei and their path to coalescence
• The Gravitational Wave Background from Massive Black Hole Binaries in Illustris: spectral features and time to detection with pulsar timing arrays
• Evolution of binary black holes in self gravitating discs: dissecting the torques
• Imprint of Accretion Disk-Induced Migration on Gravitational Waves from Extreme Mass Ratio Inspirals
• Gas driven massive black hole binaries: signatures in the nHz gravitational wave background
• Dual black holes in merger remnants. II: spin evolution and gravitational recoil
• Growing the first bright quasars in cosmological simulations of structure formation
• Massive black hole binaries: dynamical evolution and observational signatures
• Post-Newtonian Evolution of Massive Black Hole Triplets in Galactic Nuclei: IV. Implications for LISA
• Tearing up the disc: how black holes accrete
• Self consistent model for the evolution of eccentric massive black hole binaries in stellar environments: implications for gravitational wave observations
• On the orbital evolution of supermassive black hole binaries with circumbinary accretion discs
• Hydrodynamics of galaxy mergers with supermassive black holes: is there a last parsec problem ?
• Circumbinary Accretion from Finite and Infinite Disks
• Multimessenger astronomy with pulsar timing and X-ray observations of massive black hole binaries
• Identifying Supermassive Black Hole Binaries with Broad Emission Line Diagnosis
• Gas-driven inspiral of binaries in thin accretion disks
• The late inspiral of supermassive black hole binaries with circumbinary gas discs in the LISA band
• Magnetic flux paradigm for radio-loudness of AGN
• Observational Signatures of Binary Supermassive Black Holes
• Accretion disks around binary black holes of unequal mass: GRMHD simulations near decoupling
• Binaries migrating in a gaseous disk: Where are the Galactic center binaries?
• Retrograde Accretion and Merging Supermassive Black Holes
• SDSS J092712.65+294344.0: Recoiling Black Hole or A Sub-parsec Binary Candidate?
• Electromagnetic Counterparts to Massive Black Hole Mergers
• A transition in circumbinary accretion discs at a binary mass ratio of 1:25
• Misaligned gas discs around eccentric black-hole binaries and implications for the final-parsec problem
• Characteristic Signatures in the Thermal Emission from Accreting Binary Black Holes
• The Origins of AGN Obscuration: The 'Torus' as a Dynamical, Unstable Driver of Accretion
• eLISA: Astrophysics and cosmology in the millihertz regime
• Insights on the astrophysics of supermassive black hole binaries from pulsar timing observations
• Mergers of Unequal Mass Galaxies: Supermassive Black Hole Binary Evolution and Structure of Merger Remnants
• Super-massive binary black holes and emission lines in active galactic nuclei
• Equilibrium eccentricity of accreting binaries
• SDSSJ092712.65+294344.0: a candidate massive black hole binary
• Constraining sub-Parsec Binary Supermassive Black Holes in Quasars with Multi-Epoch Spectroscopy. I. The General Quasar Population
• Long-term evolution of massive black hole binaries. IV. Mergers of galaxies with collisionally relaxed nuclei
• Massive black hole merger rates: the effect of kpc separation wandering and supernova feedback
• Pulsed Accretion onto Eccentric and Circular Binaries
• Binary black hole mergers in AGN accretion discs: gravitational wave rate density estimates
• Supermassive Black Hole Binary Candidates from the Pan-STARRS1 Medium Deep Survey
• Accretion disks around binary black holes of unequal mass: GRMHD simulations of postdecoupling and merger
• Orbital evolution of binary black holes in active galactic nucleus disks: a disk channel for binary black hole mergers?
• A limit on eccentricity growth from global 3-D simulations of disc-planet interactions
• Constraining the Orbit of Supermassive Black Hole Binary 0402+379
• Periodic self-lensing from accreting massive black hole binaries
• Collisionless loss-cone refilling: there is no final parsec problem
• Search for Supermassive Black Hole Binaries in the Sloan Digital Sky Survey Spectroscopic Sample
• Massive Black Hole binaries in gas-rich galaxy mergers; multiple regimes of orbital decay and interplay with gas inflows
• Black hole mergers: the first light
• Orbital Evolution of Binaries in Circumbinary Disks
• Binary black holes' effects on electromagnetic fields
• Dual black holes in merger remnants. I: linking accretion to dynamics
• A Large Systematic Search for Close Supermassive Binary and Rapidly Recoiling Black Holes - III. Radial Velocity Variations
• Post-Newtonian evolution of massive black hole triplets in galactic nuclei -- III. A robust lower limit to the nHz stochastic background of gravitational waves
• Post-Newtonian evolution of massive black hole triplets in galactic nuclei -- II. Survey of the parameter space
• Testing the binary hypothesis: pulsar timing constraints on supermassive black hole binary candidates
• Gas pile-up, gap overflow, and Type 1.5 migration in circumbinary disks: application to supermassive black hole binaries
• The evolution of large cavities and disc eccentricity in circumbinary discs
• Precession and accretion in circumbinary discs: The case of HD 104237
• Massive BH Binaries as Periodically-Variable AGN
• Suppression of the accretion rate in thin discs around binary black holes
• Relativistic Mergers of Supermassive Black Holes and their Electromagnetic Signatures
• Evidence for periodicity in 43 year-long monitoring of NGC 5548
• Constraining Sub-Parsec Binary Supermassive Black Holes in Quasars with Multi-Epoch Spectroscopy. III. Candidates from Continued Radial Velocity Tests
• Electromagnetic counterparts of supermassive black hole binaries resolved by pulsar timing arrays
• Forced motion near black holes
• Circumbinary discs: Numerical and physical behaviour
• Massive black hole evolution models confronting the n-Hz amplitude of the stochastic gravitational wave background
• Relativistic Dynamics and Mass Exchange in Binary Black Hole Mini-Disks
• Mergers of Supermassive Black Holes in Astrophysical Environments
• Fossil Gas and the Electromagnetic Precursor of Supermassive Binary Black Hole Mergers
• Numerical Relativity of Compact Binaries in the 21st Century
• Alignment of supermassive black hole binary orbits and spins
• The electromagnetic chirp of a compact binary black hole: a phase template for the gravitational wave inspiral
• A probable Milli-Parsec Supermassive Binary Black Hole in the Nearest Quasar Mrk 231
• From galactic nuclei to the halo outskirts: tracing supermassive black holes across cosmic history and environments
• Stellar and Gaseous Nuclear Disks Observed in Nearby (U)LIRGs
• Quasi-Periodicity of Supermassive Binary Black Hole Accretion Approaching Merger
• SDSS J0159+0105: A Radio-Quiet Quasar with a Centi-Parsec Supermassive Black Hole Binary Candidate
• Eccentric black hole mergers and zoom-whirl behavior from elliptic inspirals to hyperbolic encounters
• X-ray emission from high-redshift miniquasars: self-regulating the population of massive black holes through global warming
• Identifying Decaying Supermassive Black Hole Binaries from their Variable Electromagnetic Emission
• Nuclear coups: dynamics of black holes in galaxy mergers
• Observable Consequences of Merger-Driven Gaps and Holes in Black Hole Accretion Disks
• Preferential Accretion and Circumbinary Disk Precession in Eccentric Binary Systems
• Elliptical Galaxies and Bulges of Disk Galaxies: Summary of Progress and Outstanding Issues
• Structure and evolution of circumbinary disks around supermassive black hole (SMBH) binaries
• Candidate Periodically Variable Quasars from the Dark Energy Survey and the Sloan Digital Sky Survey
• Spin alignment and differential accretion in merging black hole binaries
• Recoiling Supermassive Black Holes: a search in the Nearby Universe
• A Large Systematic Search for Close Supermassive Binary and Rapidly Recoiling Black Holes - II. Continued Spectroscopic Monitoring and Optical Flux Variability
• Migration of massive black hole binaries in self--gravitating accretion discs: Retrograde versus prograde
• Time-Dependent Models for the Afterglows of Massive Black Hole Mergers
• Electromagnetic Counterparts to Black Hole Mergers
• The birth of a supermassive black hole binary
• Gravitational wave emission from binary supermassive black holes
• Ripple effects & oscillations in the broad FeKa line as a probe of massive black hole mergers
• Spikey: Self-Lensing Flares from Eccentric SMBH Binaries
• Multi-messenger Time-domain Signatures Of Supermassive Black Hole Binaries
• Hydrodynamical Response of a Circumbinary Gas Disk to Black Hole Recoil and Mass Loss
• Distinguishing Tidal Disruption Events from Impostors
• Gas pile-up, gap overflow, and Type 1.5 migration in circumbinary disks: general theory
• Resolving massive black hole binaries evolution via adaptive particle-splitting
• Global MHD Simulations of Accretion Disks in Cataclysmic Variables (CVs): I. The Importance of Spiral Shocks
• Searching for Binary Supermassive Black Holes via Variable Broad Emission Line Shifts: Low Binary Fraction
• Measuring parameters of massive black hole binaries with partially aligned spins
• Parameter estimation for inspiraling eccentric compact binaries including pericenter precession
• Gravitational recoil: effects on massive black hole occupation fraction over cosmic time
• Recurring flares from supermassive black hole binaries: implications for tidal disruption candidates and OJ 287
• On the Eccentricity Excitation in Post-Main Sequence Binaries
• Effect of data gaps on the detectability and parameter estimation of massive black hole binaries with LISA
• Binary accretion rates: dependence on temperature and mass-ratio
• Astrophysics of Super-massive Black Hole Mergers
• Constraints on Black Hole/Host Galaxy Co-evolution and Binary Stalling Using Pulsar Timing Arrays
• Spin effects in the phasing of gravitational waves from binaries on eccentric orbits
• Nonlinear Dynamical Friction in a Gaseous Medium
• Search of sub-parsec massive binary black holes through line diagnosis
• A Radial Velocity Test for Supermassive Black Hole Binaries as an Explanation for Broad, Double-Peaked Emission Lines in Active Galactic Nuclei
• Resonances in retrograde circumbinary discs
• Intermediate-mass black holes from Population III remnants in the first galactic nuclei
• Infalling clouds on to supermassive black hole binaries - II. Binary evolution and the final parsec problem
• Origin and Implications of high eccentricities in massive black hole binaries at sub-pc scales
• Circumbinary Disk Accretion into Spinning Black Hole Binaries
• Nonlinear quasinormal mode detectability with next-generation gravitational wave detectors
• Long-term Evolution of Binary Orbits Induced by Circumbinary Disks
• Improved post-Newtonian waveform model for inspiralling precessing-eccentric compact binaries
• The competing effect of gas and stars in massive black hole binaries evolution
• Emission Signatures from Sub-parsec Binary Supermassive Black Holes I: Diagnostic Power of Broad Emission Lines
• Constraints on Individual Supermassive Black Hole Binaries from Pulsar Timing Array Limits on Continuous Gravitational Waves
• Supermassive Black Hole Binaries: The Search Continues
• Enhanced accretion rates of stars on Super-massive Black Holes by star-disk interactions in galactic nuclei
• Linking the fate of massive black hole binaries to the active galactic nuclei luminosity function
• Accretion and Orbital Inspiral in Gas-Assisted Supermassive Black Hole Binary Mergers
• Infalling clouds onto super-massive black hole binaries - I. Formation of discs, accretion and gas dynamics
• Estimating the Prompt Electromagnetic Luminosity of a Black Hole Merger
• Rapid Merger of Binary Primordial Black Holes: an Implication for GW150914
• Supermassive black holes coalescence mediated by massive perturbers: implications for gravitational waves emission and nuclear cluster formation
• Gas squeezing during the merger of a supermassive black hole binary
• The origin of the negative torque density in disk-satellite interaction
• Accelerated orbital decay of supermassive black hole binaries in merging nuclear star clusters
• The Quasar SDSS J153636.22+044127.0: A Double-Peaked Emitter in a Candidate Binary Black-Hole System
• Disk-satellite interaction in disks with density gaps
• Evolution of binary black holes in AGN accretion discs: Disc-binary interaction and gravitational wave emission
• Hubble Space Telescope Wide Field Camera 3 Identifies an $r_p$ = 1 Kpc Dual Active Galactic Nucleus in the Minor Galaxy Merger SDSS J0924+0510 at z = 0.1495
• Wide twin binaries are extremely eccentric: evidence of twin binary formation in circumbinary disks
• No tension between assembly models of supermassive black hole binaries and pulsar observations
• How Binaries Accrete: Hydrodynamic Simulations with Passive Tracer Particles
• Pulsar timing array signals induced by black hole binaries in relativistic eccentric orbits
• Search of sub-parsec massive binary black holes through line diagnosis II
• The search for spinning black hole binaries in mock LISA data using a genetic algorithm
• Lighthouse in the Dust: Infrared Echoes of Periodic Emission from Massive Black Hole Binaries
• Properties of Accretion Flows Around Coalescing Supermassive Black Holes
• First long-term optical spectro-photometric monitoring of a binary black hole candidate E1821+643: I. Variability of spectral lines and continuum
• Tidal disruption by extreme mass ratio binaries and application to ASASSN-15lh
• Kinematic signatures of reverberation mapping of close binaries of supermassive black holes in active galactic nuclei
• Circumbinary disc self-gravity governing supermassive black hole binary mergers
• Witnessing the Birth of a Quasar
• No snow-plough mechanism during the rapid hardening of supermassive black hole binaries
• Angular Momentum and the Formation of Stars and Black Holes
• The effect of AGN feedback on the migration timescale of supermassive black holes binaries
• Super massive black holes in star forming gaseous circumnuclear discs
• Spots, flares, accretion, and obscuration in the pre-main sequence binary DQ Tau
• Nonlinear Dynamical Friction of a Circular-Orbit Perturber in a Gaseous Medium
• Circumbinary discs with radiative cooling and embedded planets
• An Improved Test of the Binary Black Hole Hypothesis for Quasars with Double-peaked Broad Balmer Lines
• Emission Lines as a Tool in Search for Supermassive Black Hole Binaries and Recoiling Black Holes
• Electromagnetic signatures from accreting massive black hole binaries in time domain photometric surveys
• Chasing Super-Massive Black Hole merging events with $Athena$ and LISA
• Pairing of Massive Black Holes in Merger Galaxies Driven by Dynamical Friction
• Massive Black Hole Science with eLISA
• Massive black hole and gas dynamics in mergers of galaxy nuclei - II. Black hole sinking in star-forming nuclear discs
• Electromagnetic signatures of supermassive black hole binaries resolved by PTAs
• Long live the disk: lifetimes of protoplanetary disks in hierarchical triple star systems and a possible explanation for HD 98800 B
• Eccentric Binaries in Retrograde Disks
• An Electromagnetic Signature of Galactic Black Hole Binaries That Enter Their Gravitational-Wave Induced Inspiral
• Testing the relativistic Doppler boost hypothesis for the binary candidate quasar PG1302-102 with multi-band Swift data
• Binary-disk interaction: Gap-Opening criteria
• Emission signatures from sub-pc Post-Newtonian binaries embedded in circumbinary discs
• How bright are the gaps in circumbinary disk systems?
• Pulsar timing arrays and the challenge of massive black hole binary astrophysics
• Coevolution of Binaries and Gaseous Discs
• Modelling the accretion and feedback of supermassive black hole binaries in gas-rich galaxy mergers
• Binary Black Hole Accretion Flows From a Misaligned Circumbinary Disk
• On the Role of Gas Cooling in the Dynamics of Circumbinary Disks
• Measuring eccentricity and gas-induced perturbation from gravitational waves of LISA massive black hole binaries
• Black hole accretion rings revealed by future X-ray spectroscopy
• Roto-translational Effects on Deflection of Light and Particle by Moving Kerr Black Hole
• Disk induced binary precession: Implications for dynamics and multi-messenger observations of black hole binaries
• Dynamical evidence of the sub-parsec counter-rotating disc for a close binary of supermassive black holes in the nucleus of NGC 1068
• Accretion of clumpy cold gas onto massive black hole binaries: a possible fast route to binary coalescence
• Tidal disruptions in circumbinary discs (I): Star formation, dynamics, and binary evolution
• An Amusing Look at the Host of the Periodic Nuclear Transient ASASSN-14ko Reveals a Second AGN
• Misaligned accretion on to supermassive black hole binaries
• The minimum measurable eccentricity from gravitational waves of LISA massive black hole binaries
• Spectral Energy Distributions of Candidate Periodically-Variable Quasars: Testing the Binary Black Hole Hypothesis
• Dynamic Fisheye Grids for Binary Black Holes Simulations
• Properties and merger signatures of galaxies hosting LISA coalescing massive black hole binaries
• Evolution of a Binary Black Hole with a Retrograde Circumbinary Accretion Disk
• Binary Disk interaction II: Gap-Opening criteria for unequal mass binaries
• Eccentric first post-Newtonian waveforms for compact binaries in frequency domain with Hansen coefficients
• The evolution of a binary in a retrograde circular orbit embedded in an accretion disk
• Microlensing of Sub-parsec Massive Binary Black Holes in Lensed QSOs: Light Curves and Size-Wavelength Relation
• The kinematic signature of the inspiral phase of massive binary black holes
• Evidence for a milliparsec-separation Supermassive Binary Black Hole with quasar microlensing
• Unveiling the hosts of parsec-scale massive black hole binaries: morphology and electromagnetic signatures
• Type II migration strikes back -- An old paradigm for planet migration in discs
• Gravitational drag on a point mass in hypersonic motion within a Gaussian disk
• Suppressed accretion onto massive black hole binaries surrounded by thin disks
• Estimating the fossil disc mass during supermassive black hole mergers: the importance of torque implementation
• Mass Function of Binary Massive Black Holes in Active Galactic Nuclei
• A Multi-wavelength Analysis of Binary-AGN Candidate PSO J334.2028+01.4075
• On the behaviour of eccentric sub-pc massive black hole binaries embedded in massive discs
• Radio Crickets: Chirping Jets from Black Hole Binaries Entering their Gravitational Wave Inspiral
• Dynamics and spin alignment in massive, gravito-turbulent circumbinary discs around supermassive black hole binaries
• Retrograde binaries of massive black holes in circum-binary accretion discs
• NGC 6240 Supermassive Black Hole Binary dynamical evolution based on Chandra data
• Predicting the broad lines polarization emitted by supermassive binary black holes
• Tatooine Nurseries: Structure and Evolution of Circumbinary Protoplanetary Disks
• Mergers of globular clusters in the Galactic disc: intermediate mass black hole coalescence and implications for gravitational waves detection
• Merging timescale for supermassive black hole binary in interacting galaxy NGC 6240
• Formation of polar circumstellar discs in binary star systems
• The Influence of Black Hole Binarity on Tidal Disruption Events
• The Pairing Probability of Massive Black Holes in Merger Galaxies in the Presence of Radiative Feedback
• Resolving the nano-Hz gravitational wave sky: the detectability of eccentric binaries with PTA experiments
• SDSS J154751.94+025550 with double-peaked broad Hβbut single-peaked broad Hα: a candidate for central binary black hole system?
• Stars or gas? Constraining the hardening processes of massive black-hole binaries with LISA
• Line shifts and sub-pc super-massive binary black holes
• Signatures of Massive Black Hole Merger Host Galaxies from Cosmological Simulations I: Unique Galaxy Morphologies in Imaging
• Torques on low-mass bodies in retrograde orbit in gaseous disks
• Gravitational Wave Heating of Stars and Accretion Disks
• Non-steady-state long-term evolution of supermassive black hole binaries surrounded by accretion discs
• Can a Satellite Galaxy Merger Explain the Active Past of the Galactic Center?
• Binary AGN simulations with radiation pressure reveal a new duty cycle, and a reduction of gravitational torque, through 'minitori' structures
• Three Cases of Optical Periodic Modulation in Active Galactic Nuclei
• Differential Interferometric Signatures of Close Binaries of Supermassive Black Holes in Active Galactic Nuclei: II. Merged Broad Line Regions
• Fundamental Physics and Cosmology with TianQin
• Menus for Feeding Black Holes
• Determining sub-parsec supermassive black hole binary orbits with infrared interferometry
• Lyman edges in supermassive black hole binaries
• Unveiling the solution to the final-parsec problem by combining milli-Hertz gravitational-wave observation and AGN survey
• Radiation Magnetohydrodynamic Simulation of sub-Eddington Circumbinary Disk around an Equal-mass Massive Black Hole Binary
• A conservation-based method for simulating the inspiral of binary black holes
• Radiatively inefficient accretion flows induced by gravitational-wave emission before massive black hole coalescence
• Circumbinary discs from tidal disruption events
• Accretion of clumpy cold gas onto massive black holes binaries: the challenging formation of extended circumbinary structures
• The Stellar Kinematic Signature of Massive Black Hole Binaries
• Astrophysics with the Laser Interferometer Space Antenna
• Differential interferometry of close binary of supermassive black holes in an elliptical configuration
• Tracking on-the-fly massive black hole binary evolution and coalescence in galaxy simulations: RAMCOAL
• SPH simulations of structures in protoplanetary disks
• Observable Signatures of EMRI Black Hole Binaries Embedded in Thin Accretion Disks
• Properties of loss cone stars in a cosmological galaxy merger remnant
• Signatures of Massive Black Hole Merger Host Galaxies from Cosmological Simulations II: Unique Stellar Kinematics in Integral Field Unit Spectroscopy
• Massive Black Hole Mergers
• Tidal disruptions in circumbinary disks. II: Observational signatures in the reverberation spectra
• Evolution of circumbinary accretion disk around supermassive binary black hole: post-Newtonian hydrodynamics versus Newtonian hydrodynamics
• Detection of eccentric close-binary supermassive black holes with incomplete interferometric data
• Supermassive black hole mergers as dual sources for electromagnetic flares in the jet emission and gravitational waves
• A Shining Death of Unequal Supermassive Black Hole Binaries
• Spin and quadrupolar effects in the secular evolution of precessing compact binaries with black hole, neutron star, gravastar, or boson star components
• Black holes as telescopes: Discovering supermassive binaries through quasi-periodic lensed starlight
• Evolution of Stellar Orbits Around Merging Massive Black-Hole Binary
• Identifying massive black hole binaries via light curve variability in optical time-domain surveys
• The effect of cooling on the accretion of circumprimary discs inmerging supermassive black hole binaries
• Analytical and Numerical Methods for Circumbinary Disk Dynamics -- II: Inclined Disks
• AT 2021hdr: A candidate tidal disruption of a gas cloud by a binary super massive black hole system
• Sculpting the outer edge of accretion disks in pre-circumbinary binary black hole systems
• Radiation pressure role in accreting massive black hole binaries
• Contaminating Electromagnetic Transients in LISA Gravitational Wave Localization Volumes. I: The Intrinsic Rates
• The landscape of massive black-hole spectroscopy with LISA and Einstein Telescope
• Line Shapes Emitted from Spiral Structures around Symmetric Orbits of Supermassive Binary Black Holes
• Binary black hole signatures in polarized light curves
• Formation of discs around super-massive black hole binaries
• Accretion Kinematics in the T Tauri Binary TWA 3A: Evidence for Preferential Accretion onto the TWA 3A Primary
• An equal mass ratio supermassive binary black holes in Q J0158-4325 with periodic microlensing signature?
• Multiwavelength periodic microlensing signatures of macrolensed supermassive binary black holes
• Discriminating between different scenarios for the formation and evolution of massive black holes with LISA