Four eccentric mergers increase the evidence that LIGO--Virgo--KAGRA's binary black holes form dynamically

Abstract

The growing population of compact binary mergers detected with gravitational waves contains multiple events that are challenging to explain through isolated binary evolution. Such events have higher masses than are expected in isolated binaries, component spin-tilt angles that are misaligned, and/or non-negligible orbital eccentricities. We investigate the orbital eccentricities of 62 binary black hole candidates from the third gravitational-wave transient catalogue of the LIGO-Virgo-KAGRA Collaboration with an aligned-spin, moderate-eccentricity waveform model. Within this framework, we find that at least four of these events show significant support for eccentricity $e_{10}\ge 0.1$ at a gravitational-wave frequency of $10$~Hz ($>60\%$ credibility, under a log-uniform eccentricity prior that spans the range $10^{-4}<e_{10}<0.2$). Two of these events are new additions to the population: GW191109 and GW200208\_22. If the four eccentric candidates are truly eccentric, our results suggest that densely-populated star clusters may produce 100\% of the observed mergers. However, it remains likely that other formation environments with higher yields of eccentric mergers -- for example, active galactic nuclei -- also contribute. We estimate that we will be able to confidently distinguish which formation channel dominates the eccentric merger rate after $\gtrsim 80$ detections of events with $e_{10}\ge 0.05$ at LIGO--Virgo sensitivity, with only $\sim 5$ detectably-eccentric events required to distinguish formation channels with third-generation gravitational-wave detectors.

References in corpus (65)

• GWTC-2: Compact Binary Coalescences Observed by LIGO and Virgo During the First Half of the Third Observing Run
• GW190814: Gravitational Waves from the Coalescence of a 23 M${}_{\odot }$ Black Hole with a 2.6 M${}_{\odot }$ Compact Object
• GW190521: A Binary Black Hole Merger with a Total Mass of $150M_{\odot }$
• Pulsational Pair-Instability Supernovae
• Total recoil: the maximum kick from nonspinning black-hole binary inspiral
• BayesWave: Bayesian Inference for Gravitational Wave Bursts and Instrument Glitches
• The Effect of Pair-Instability Mass Loss on Black Hole Mergers
• Mind the gap: The location of the lower edge of the pair instability supernovae black hole mass gap
• Illuminating Black Hole Binary Formation Channels with Spins in Advanced LIGO
• One Channel to Rule Them All? Constraining the Origins of Binary Black Holes using Multiple Formation Pathways
• GW190521: orbital eccentricity and signatures of dynamical formation in a binary black hole merger signal
• Alignment of the spins of supermassive black holes prior to coalescence
• Lidov-Kozai Cycles with Gravitational Radiation: Merging Black Holes in Isolated Triple Systems
• Distinguishing Spin-Aligned and Isotropic Black Hole Populations With Gravitational Waves
• BayesLine: Bayesian Inference for Spectral Estimation of Gravitational Wave Detector Noise
• Hierarchical mergers of stellar-mass black holes and their gravitational-wave signatures
• GW190521 as a merger of Proca stars: a potential new vector boson of $8.7\times 10^{-13}$ eV
• Estimating the final spin of a binary black hole coalescence
• The Pair-Instability Mass Gap for Black Holes
• Where are LIGO's Big Black Holes?
• A waveform model for eccentric binary black hole based on effective-one-body-numerical-relativity (EOBNR) formalism
• Formation of GW190521 from stellar evolution: the impact of the hydrogen-rich envelope, dredge-up and ${}^{12}$C($\alpha$, $\gamma$)${}^{16}$O rate on the pair-instability black hole mass gap
• Evidence for hierarchical black hole mergers in the second LIGO--Virgo gravitational-wave catalog
• Searching for Eccentricity: Signatures of Dynamical Formation in the First Gravitational-Wave Transient Catalogue of LIGO and Virgo
• Mass-gap Mergers in Active Galactic Nuclei
• Stochastic Gravitational-Wave Background due to Primordial Binary Black Hole Mergers
• Common envelope ejection in massive binary stars - Implications for the progenitors of GW150914 and GW151226
• Eccentric Black Hole Mergers in Active Galactic Nuclei
• Implications of Eccentric Observations on Binary Black Hole Formation Channels
• Spin-orbit interactions in black-hole binaries
• Minding the gap: GW190521 as a straddling binary
• Distribution of Effective Spins and Masses of Binary Black Holes from the LIGO and Virgo O1-O3a Observing Runs
• General-relativistic precession in a black-hole binary
• Repeated mergers and ejection of black holes within nuclear star clusters
• On the Origin of GW190521-like events from repeated black hole mergers in star clusters
• Binary Black Hole Formation with Detailed Modeling: Stable Mass Transfer Leads to Lower Merger Rates
• Fingerprints of binary black hole formation channels encoded in the mass and spin of merger remnants
• The most ordinary formation of the most unusual double black hole merger
• Signs of eccentricity in two gravitational-wave signals may indicate a sub-population of dynamically assembled binary black holes
• Constraining the orbital eccentricity of inspiralling compact binary systems with Advanced LIGO
• Confusing Head-On Collisions with Precessing Intermediate-Mass Binary Black Hole Mergers
• Repeated mergers, mass-gap black holes, and formation of intermediate-mass black holes in nuclear star clusters
• The impact of stellar rotation on the black hole mass-gap from pair-instability supernovae
• Building better spin models for merging binary black holes: Evidence for non-spinning and rapidly spinning nearly aligned sub-populations
• Binary black hole mergers: formation and populations
• The curious case of GW200129: interplay between spin-precession inference and data-quality issues
• Beyond the Standard Model Explanations of GW190521
• Spin-Orbit Misalignment of Merging Black-Hole Binaries with Tertiary Companions
• The impact of common envelope development criteria on the formation of LIGO/Virgo sources
• High Eccentricities and High Masses Characterize Gravitational-wave Captures in Galactic Nuclei as Seen by Earth-based Detectors
• Binary Black Hole Merger Rates in AGN Disks versus Nuclear Star Clusters: Loud beats Quiet
• Suspicious Siblings: The Distribution of Mass and Spin Across Component Black Holes in Isolated Binary Evolution
• Measuring the eccentricity of GW170817 and GW190425
• Black hole mergers of AGN origin in LIGO/Virgo's O1-O3a observing periods
• How to assess the primordial origin of single gravitational-wave events with mass, spin, eccentricity, and deformability measurements
• Remnant Black Hole Kicks and Implications for Hierarchical Mergers
• Wind mass-loss rates of stripped stars inferred from Cygnus X-1
• Signatures of mass ratio reversal in gravitational waves from merging binary black holes
• A Rosetta Stone for eccentric gravitational waveform models
• Measuring the properties of active galactic nuclei disks with gravitational waves
• Spin misalignment of black hole binaries from young star clusters: implications for the origin of gravitational waves events
• Filling the Black Hole Mass Gap: Avoiding Pair Instability in Massive Stars through Addition of Non-Nuclear Energy
• Avoiding a Cluster Catastrophe: Retention Efficiency and the Binary Black Hole Mass Spectrum
• Gravitational Waves as a Probe of Globular Cluster Formation and Evolution
• Gravitational-wave inference for eccentric binaries: the argument of periapsis

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• GW241011 and GW241110: Exploring Binary Formation and Fundamental Physics with Asymmetric, High-Spin Black Hole Coalescence
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• Third post-Newtonian dynamics for eccentric orbits and aligned spins in the effective-one-body waveform model SEOBNRv5EHM
• Eccentricity-induced systematic error on parametrized tests of general relativity: Hierarchical Bayesian inference applied to a binary black hole population
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• The most luminous AGN do not produce the majority of the detected stellar-mass black hole binary mergers in the local Universe
• A study of the Inspiral-Merger-Ringdown Consistency Test with gravitational-wave signals from compact binaries in eccentric orbits
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• Spin Doctors: How to diagnose a hierarchical merger origin
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• Testing eccentric corrections to the radiation-reaction force in the test-mass limit of effective-one-body models
• Gravitational-wave Observations Suggest Most Black Hole Mergers Form in Triples
• Orbital Eccentricity and Spin-Orbit Misalignment Are Evidence that Neutron Star-Black Hole Mergers Form through Triple Star Evolution
• Parameter control for eccentric, precessing binary black hole simulations with SpEC
• Gravitational wave mergers of accreting binary black holes in AGN discs
• Swarm-intelligent search for gravitational waves from eccentric binary mergers
• Testing the nature of GW200105 by probing the frequency evolution of eccentricity
• Gravitational Radiation from Eccentric Binary Black Hole System in Dynamical Chern-Simons Gravity
• Inferring Interference: Identifying a Perturbing Tertiary with Eccentric Gravitational Wave Burst Timing
• Can we discern millilensed gravitational-wave signals from signals produced by precessing binary black holes with ground-based detectors?
• Parameter Distributions of Binary Black Hole Mergers Near Supermassive Black Holes as Seen by Advanced Gravitational Wave Detectors
• Eccentricity matters: Impact of eccentricity on inferred binary black hole populations
• Distinguishing the Origin of Eccentric Black Hole Mergers with Gravitational-wave Spin Measurements
• Eccentricity evolution consistency test to distinguish eccentric gravitational-wave signals from eccentricity mimickers
• Biased parameter inference of eccentric, spin-precessing binary black holes
• Search for gravitational waves from eccentric binary black holes with an effective-one-body template
• Accretion mediated spin-eccentricity correlations in LISA massive black hole binaries
• Modeling Gravitational Wave Modes from the Inspiral of Binaries with Arbitrary Eccentricity
• Gravitational waves from quasielliptic compact binaries in scalar-tensor theory to one-and-a-half post-Newtonian order
• Observability of dynamical tides in merging eccentric neutron star binaries
• Gravitational waves from eccentric binary neutron star mergers: Systematic biases and inadequacy of quasicircular templates
• Glitches far from transient gravitational-wave events do not bias inference
• Sky localization of gravitational waves from eccentric binaries
• Chase Orbits, not Time: A Scalable Paradigm for Long-Duration Eccentric Gravitational-Wave Surrogates
• Eccentricity evolution of spinning binaries and its dependence on the equation of state of the components
• Probing modified gravitational-wave dispersion with bursts from eccentric black-hole binaries
• Archival Inference for Eccentric Stellar-Mass Binary Black Holes in Space-Based Gravitational Wave Observations
• Probing missing physics from inspiralling compact binaries via time-frequency tracks
• Gravitational-wave astronomy requires population-informed parameter estimation
• Early Warning From Eccentric Compact Binaries: Template Initialization And Sub-dominant Mode Effects
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