Electromagnetic Counterparts to Massive Black Hole Mergers

Abstract

The next two decades are expected to open the door to the first coincident detections of electromagnetic (EM) and gravitational wave (GW) signatures associated with massive black hole (MBH) binaries heading for coalescence. These detections will launch a new era of multimessenger astrophysics by expanding this growing field to the low-frequency GW regime and will provide an unprecedented understanding of the evolution of MBHs and galaxies. They will also constitute fundamentally new probes of cosmology and would enable unique tests of gravity. The aim of this Living Review is to provide an introduction to this research topic by presenting a summary of key findings, physical processes and ideas pertaining to EM counterparts to MBH mergers as they are known at the time of this writing. We review current observational evidence for close MBH binaries, discuss relevant physical processes and timescales, and summarize the possible EM counterparts to GWs in the precursor, coalescence, and afterglow stages of a MBH merger. We also describe open questions and discuss future prospects in this dynamic and quick-paced research area.

Invited review article accepted for publication in Living Reviews in Relativity. 127 pages, 31 figures. The revised version includes reviewers' comments, updated references, new Table 1, and new Section 4.4

References in corpus (141)

• Laser Interferometer Space Antenna
• Properties of galaxies reproduced by a hydrodynamic simulation
• The Co-Evolution of Galaxies and Supermassive Black Holes: Insights from Surveys of the Contemporary Universe
• A gravitational-wave standard siren measurement of the Hubble constant
• Constraining Black Hole Spin Via X-ray Spectroscopy
• The stochastic gravitational-wave background from massive black hole binary systems: implications for observations with Pulsar Timing Arrays
• Large Merger Recoils and Spin Flips From Generic Black-Hole Binaries
• Total recoil: the maximum kick from nonspinning black-hole binary inspiral
• A Compact Supermassive Binary Black Hole System
• A massive binary black-hole system in OJ287 and a test of general relativity
• Massive black hole binary mergers within sub-pc scale gas discs
• The TianQin project: current progress on science and technology
• A possible close supermassive black-hole binary in a quasar with optical periodicity
• On the evidence for a common-spectrum process in the search for the nanohertz gravitational-wave background with the Parkes Pulsar Timing Array
• Rapid Formation of Supermassive Black Hole Binaries in Galaxy Mergers with Gas
• The Population of Viscosity- and Gravitational Wave-Driven Supermassive Black Hole Binaries Among Luminous AGN
• Alignment of the spins of supermassive black holes prior to coalescence
• The Evolution of Black Hole Mass and Spin in Active Galactic Nuclei
• Common-red-signal analysis with 24-yr high-precision timing of the European Pulsar Timing Array: Inferences in the stochastic gravitational-wave background search
• Supermassive black hole binaries in gaseous and stellar circumnuclear discs: orbital dynamics and gas accretion
• Ejection of Supermassive Black Holes from Galaxy Cores
• Expected properties of the first gravitational wave signal detected with pulsar timing arrays
• Binary black hole merger dynamics and waveforms
• A Candidate Sub-Parsec Supermassive Binary Black Hole System
• Quasars at z=6: the survival of the fittest
• The Lick AGN Monitoring Project 2011: Spectroscopic Campaign and Emission-Line Light Curves
• Viscous Hydrodynamics Simulations of Circumbinary Accretion Discs: Variability, Quasi-Steady State, and Angular Momentum Transfer
• Dynamics of triple black hole systems in hierarchically merging massive galaxies
• The First Round Result from the TianQin-1 Satellite
• Fuelling Active Galactic Nuclei
• The final mass and spin of black hole mergers
• The Local Nanohertz Gravitational-Wave Landscape From Supermassive Black Hole Binaries
• Gravitational Recoil during Binary Black Hole Coalescence using the Effective One Body Approach
• On the Bardeen-Petterson Effect in black hole accretion discs
• Hydrodynamic Torques in Circumbinary Accretion Disks
• Binary Black-Hole Mergers in Magnetized Disks: Simulations in Full General Relativity
• Anatomy of the binary black hole recoil: A multipolar analysis
• Observable Signatures of a Black Hole Ejected by Gravitational Radiation Recoil in a Galaxy Merger
• The Distribution of Recoil Velocities from Merging Black Holes
• Chandra Discovery of a Binary Active Galactic Nucleus in Mrk 739
• Binary Black Hole Accretion During Inspiral and Merger
• NANOGrav Limits on Gravitational Waves from Individual Supermassive Black Hole Binaries in Circular Orbits
• Dynamical Friction of a Circular-Orbit Perturber in a Gaseous Medium
• Modeling kicks from the merger of non-precessing black-hole binaries
• Further insight into gravitational recoil
• Wandering Black Holes in Bright Disk Galaxy Halos
• Black hole mergers from dwarf to massive galaxies with the NewHorizon and Horizon-AGN simulations
• A milliparsec supermassive black hole binary candidate in the galaxy SDSS J120136.02+300305.5
• Growing Massive Black Hole Pairs in Minor Mergers of Disk Galaxies
• Gravitational recoil: signatures on the massive black hole population
• Characteristic Signatures in the Thermal Emission from Accreting Binary Black Holes
• FIRST `Winged' and `X'-shaped Radio Source Candidates
• Three Dimensional MHD Simulation of Circumbinary Accretion Disks -2. Net Accretion Rate
• Effects of gravitational-wave recoil on the dynamics and growth of supermassive black holes
• The First Spectroscopically Resolved Sub-parsec Orbit of a Supermassive Binary Black Hole
• Accurate Simulations of Binary Black-Hole Mergers in Force-Free Electrodynamics
• General Relativistic Simulations of Magnetized Plasmas around Merging Supermassive Black Holes
• Binary black hole mergers in gaseous disks: Simulations in general relativity
• Prompt Shocks in the Gas Disk Around a Recoiling Supermassive Black Hole Binary
• Accretion disks around binary black holes of unequal mass: GRMHD simulations of postdecoupling and merger
• Interactions between multiple supermassive black holes in galactic nuclei: a solution to the final parsec problem
• Constraining the Orbit of Supermassive Black Hole Binary 0402+379
• Periodic self-lensing from accreting massive black hole binaries
• Pre-Merger Localization of Gravitational-Wave Standard Sirens With LISA: Triggered Search for an Electromagnetic Counterpart
• Quasi-Periodic Behavior of Mini-Disks in Binary Black Holes Approaching Merger
• Binary black holes' effects on electromagnetic fields
• Relativistic Suppression of Black Hole Recoils
• A Displaced Supermassive Black Hole in M87
• Modeling gravitational recoil from precessing highly-spinning unequal-mass black-hole binaries
• GMRT observations of X-shaped radio sources
• Binary black hole merger: symmetry and the spin expansion
• Tidal disruption events from supermassive black hole binaries
• Hydrodynamical Backflow in X-shaped Radio Galaxy PKS 2014-55
• EM counterparts of recoiling black holes: general relativistic simulations of non-Keplerian discs
• Relativistic Dynamics and Mass Exchange in Binary Black Hole Mini-Disks
• Modeling of Emission Signatures of Massive Black Hole Binaries: I Methods
• Orbital Decay of Supermassive Black Hole Binaries in Clumpy Multiphase Merger Remnants
• Reaction of Accretion Disks to Abrupt Mass Loss During Binary Black Hole Merger
• The electromagnetic chirp of a compact binary black hole: a phase template for the gravitational wave inspiral
• Minidisks in Binary Black Hole Accretion
• Preliminary study on parameter estimation accuracy of supermassive black hole binary inspirals for TianQin
• Spitzer Observations of the Predicted Eddington Flare from Blazar OJ 287
• Quasi-Periodicity of Supermassive Binary Black Hole Accretion Approaching Merger
• Off-nuclear AGN as a signature of recoiling massive black holes
• A Systematic Search for Periodically Varying Quasars in Pan-STARRS1: An Extended Baseline Test in Medium Deep Survey Field MD09
• Perturbed disks get shocked. Binary black hole merger effects on accretion disks
• The spin expansion for binary black hole merger: new predictions and future directions
• A Survey of Disc Thickness and Viscosity in Circumbinary Accretion: Binary Evolution, Variability, and Disc Morphology
• Can binary mergers produce maximally spinning black holes?
• Multi-band light curves from eccentric accreting supermassive black hole binaries
• Prompt Electromagnetic Transients from Binary Black Hole Mergers
• Massive perturbers and the efficient merger of binary massive black holes
• The Pairing of Accreting Massive Black Holes in Multiphase Circumnuclear Disks: the Interplay between Radiative Cooling, Star Formation, and Feedback Processes
• Recoiling Supermassive Black Holes: a search in the Nearby Universe
• Electromagnetic Signatures from Supermassive Binary Black Holes Approaching Merger
• Mini-disk accretion onto spinning black hole binaries: quasi-periodicities and outflows
• The birth of a supermassive black hole binary
• Retaining Black Holes with Very Large Recoil Velocities
• Supermassive Black Hole Growth and Merger Rates from Cosmological N-body Simulations
• Multi-messenger Time-domain Signatures Of Supermassive Black Hole Binaries
• NuSTAR Resolves the First Dual AGN above 10 keV in SWIFT J2028.5+2543
• Gravitational Wave Recoil Oscillations of Black Holes: Implications for Unified Models of Active Galactic Nuclei
• Searching for Binary Supermassive Black Holes via Variable Broad Emission Line Shifts: Low Binary Fraction
• Star Clusters Around Recoiled Black Holes in the Milky Way Halo
• Effects of post-Newtonian Spin Alignment on the Distribution of Black-Hole Recoils
• Conservative GRMHD Simulations of Moderately Thin, Tilted Accretion Disks
• Missing black holes in brightest cluster galaxies as evidence for the occurrence of superkicks in nature
• Astrometric evidence for a population of dislodged AGN
• Self-lensing flares from black hole binaries I: general-relativistic ray tracing of black hole binaries
• Unveiling the Population of Wandering Black Holes via Electromagnetic Signatures
• No Evidence for Bardeen-Petterson Alignment in GRMHD Simulations and Semi-Analytic Models of Moderately Thin, Prograde, Tilted Accretion Disks
• Galaxy Rotation and Supermassive Black Hole Binary Evolution
• Gravitational Self-Lensing in Populations of Massive Black Hole Binaries
• Black hole masses and starbursts in X-shaped radio sources
• Supermassive Black Hole Binaries: The Search Continues
• Population Estimates for Electromagnetically-Distinguishable Supermassive Binary Black Holes
• 3D Relativistic MHD numerical simulations of X-shaped radio sources
• Massive Black Hole Binaries from the TNG50-3 Simulation: I. Coalescence and LISA Detection Rates
• Self-lensing flares from black hole binaries II: observing black hole shadows via light-curve tomography
• An off-centered active galactic nucleus in NGC 3115
• Imprints of recoiling massive black-holes on the hot gas of early type galaxies
• X-shaped Radio Galaxies: Optical Properties, Large-scale Environment and Relationship to Radio Structure
• SDSS J1056+5516: A Triple AGN or an SMBH Recoil Candidate?
• FIRST winged radio galaxies with X and Z symmetry
• What Are "X-Shaped" Radio Sources Telling Us? II. Properties of a Sample of 87
• Multi-Messenger Astrophysics with Pulsar Timing Arrays
• Post-Merger Jets from Supermassive Black Hole Coalescences as Electromagnetic Counterparts of Gravitational Wave Emission
• New insights from deep VLA data on the potentially recoiling black hole CID-42 in the COSMOS field
• New insights on the recoiling/binary black hole candidate J0927+2943 via molecular gas observations
• Simulations of Recoiling Massive Black Holes in the Via Lactea Halo
• Broad HI absorption in the candidate binary black-hole 4C37.11 (B2 0402+379)
• Astro2020 science white paper: The gravitational wave view of massive black holes
• Evolution of a Binary Black Hole with a Retrograde Circumbinary Accretion Disk
• Evolution of supermassive black hole binaries and tidal disruption rates in nonspherical galactic nuclei
• The spatially offset quasar E1821+643: New evidence for gravitational recoil
• 2MASX J00423991+3017515: An offset active galactic nucleus in an interacting system
• The nature of massive black hole binary candidates: II. Spectral energy distribution atlas
• Selection of Burst-like Transients and Stochastic Variables Using Multi-Band Image Differencing in the Pan-STARRS1 Medium-Deep Survey
• Binary AGN simulations with radiation pressure reveal a new duty cycle, and a reduction of gravitational torque, through 'minitori' structures
• Hypercompact stellar clusters: morphological renditions and spectro-photometric models
• Investigating the Candidate Displaced Active Galactic Nucleus in NGC 3115

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• GWTC-3: Compact Binary Coalescences Observed by LIGO and Virgo During the Second Part of the Third Observing Run
• The NANOGrav 15-year Data Set: Constraints on Supermassive Black Hole Binaries from the Gravitational Wave Background
• The NANOGrav 15-year Data Set: Bayesian Limits on Gravitational Waves from Individual Supermassive Black Hole Binaries
• Gravitational Wave Astronomy With TianQin
• Multi-messenger Time-domain Signatures Of Supermassive Black Hole Binaries
• Measuring the propagation speed of gravitational waves with LISA
• A close quasar pair in a disk-disk galaxy merger at z = 2.17
• Quasars with Periodic Variability: Capabilities and Limitations of Bayesian Searches for Supermassive Black Hole Binaries in Time-Domain Surveys
• Galaxy fields of LISA massive black hole mergers in a simulated Universe
• On networks of space-based gravitational-wave detectors
• Electromagnetic signatures from accreting massive black hole binaries in time domain photometric surveys
• A unified accretion disc model for supermassive black holes in galaxy formation simulations: method and implementation
• Chasing Super-Massive Black Hole merging events with $Athena$ and LISA
• Emission signatures from sub-pc Post-Newtonian binaries embedded in circumbinary discs
• Multimessenger study of merging massive black holes in the OBELISK simulation: gravitational waves, electromagnetic counterparts, and their link to galaxy and black hole populations
• Identifying Host Galaxies of Supermassive Black Hole Binaries Found by PTAs
• Minidisk Influence on Flow Variability in Accreting Spinning Black Hole Binaries: Simulations in Full General Relativity
• The Role of AGN in Luminous Infrared Galaxies from the Multiwavelength Perspective
• Magnetically Arrested Circumbinary Accretion Flows
• Reliable Identification of Binary Supermassive Black Holes from Rubin Observatory Time-Domain Monitoring
• Measuring the Hubble Constant Using Strongly Lensed Gravitational Wave Signals
• Finding Multiply-Lensed and Binary Quasars in the DESI Legacy Imaging Surveys
• GRMHD study of accreting massive black hole binaries in astrophysical environment: a review
• GRMHD simulations of accretion flows onto massive binary black hole mergers embedded in a thin slab of gas
• Premerger detection of massive black hole binaries using deep learning
• General Relativistic Magnetohydrodynamic Simulations of Accretion Disks Around Tilted Binary Black Holes of Unequal Mass
• Signatures of Massive Black Hole Merger Host Galaxies from Cosmological Simulations I: Unique Galaxy Morphologies in Imaging
• Stars or gas? Constraining the hardening processes of massive black-hole binaries with LISA
• AsterX: a new open-source GPU-accelerated GRMHD code for dynamical spacetimes
• Changing-Look Inspirals: Trends and Switches in AGN Disk Emission as Signposts for Merging Black Hole Binaries
• Relativistic gas accretion onto supermassive black Hole binaries from inspiral through merger
• Fundamental Physics and Cosmology with TianQin
• Efficient Bayesian inference and model selection for continuous gravitational waves in pulsar timing array data
• Radiation Magnetohydrodynamic Simulation of sub-Eddington Circumbinary Disk around an Equal-mass Massive Black Hole Binary
• Coincident Multimessenger Bursts from Eccentric Supermassive Binary Black Holes
• Decoupling of a supermassive black hole binary from its magnetically arrested circumbinary accretion disk
• Host Galaxy Demographics Of Individually Detectable Supermassive Black-hole Binaries with Pulsar Timing Arrays
• Estimating Hubble Constant with Gravitational Observations: A Concise Review
• Diffractive lensing of nano-Hertz gravitational waves emitted from supermassive binary black holes by intervening galaxies
• Imprints of massive black-hole binaries on neighbouring decihertz gravitational-wave sources
• Signatures of Massive Black Hole Merger Host Galaxies from Cosmological Simulations II: Unique Stellar Kinematics in Integral Field Unit Spectroscopy
• Unravelling the formation of the first supermassive black holes with the SKA pulsar timing array
• Viscous torque in turbulent magnetized AGN accretion disks and its effects on EMRI's gravitational waves
• Detection of eccentric close-binary supermassive black holes with incomplete interferometric data
• Effects of eccentricity on accreting binary black holes: MHD simulations in full GR reveal novel periodicities in jet power and synchrotron spectra
• Time Evolution of Mg II in SDSS J2320+0024: Implications for a Subparsec Binary Supermassive Black Hole System
• Bright siren without electromagnetic counterpart by LISA-Taiji-TianQin network
• The Host Galaxies of PTA Sources: Converting Supermassive BH Binary Parameters into EM Observables
• Thermal X-ray signatures in late-stage unequal-mass massive black hole binary mergers
• Black holes as telescopes: Discovering supermassive binaries through quasi-periodic lensed starlight
• A general relativistic magnetohydrodynamics extension to mesh-less schemes in the code GIZMO
• Searching for supermassive black holes binaries within SRG/eROSITA-De I: Properties of the X-ray selected candidates
• Multi-wavelength properties of $z\gtrsim 6$ LISA detectable events
• Binary black holes gone MAD: Magnetically arrested minidisks around nonspinning black holes
• Accurate and efficient simulation-based inference for massive black-hole binaries with LISA
• A Population Study for Searching Supermassive Binary Black Holes in Active Galactic Nuclei: Continuum Spectral Features and Periodic Variabilities
• A New Framework to Detect Multi-Messenger Signals from Bright Sporadic Stochastic Gravitational Wave Background