Distinguishing the Origin of Eccentric Black Hole Mergers with Gravitational-wave Spin Measurements

Abstract

It remains an open question whether the binary black hole mergers observed with gravitational-wave detectors originate from the evolution of isolated massive binary stars or were dynamically driven by perturbations from the environment. Recent evidence for non-zero orbital eccentricity in a handful of events is seen as support for a non-negligible fraction of the population experiencing external driving of the merger. However, it is unclear from which formation channel eccentric binary black-hole mergers would originate: dense star clusters, hierarchical field triples, active galactic nuclei, or wide binaries in the Galaxy could all be culprits. Here, we investigate whether the spin properties of eccentric mergers could be used to break this degeneracy. Using the fact that different formation channels are predicted to either produce eccentric mergers with mutually aligned or randomly oriented black-hole spins, we investigate how many confident detections would be needed in order for the two models to be statistically distinguishable. If a few percent of binary black hole mergers retain measurable eccentricity in the bandwidth of ground-based detectors, we report a $\sim 9\%$ chance that we could confidently distinguish both models (Bayes factor $\ln \mathcal{B}>3$) after the fifth observing run of the LIGO-Virgo-KAGRA detector network, $\sim 63\%$ for LIGO A#, and $\sim 98\%$ for the Einstein Telescope and Cosmic Explorer.

arXiv comment13 pages, 7 figures

References in corpus (81)

• Observation of Gravitational Waves from a Binary Black Hole Merger
• A Comprehensive Study of Binary Compact Objects as Gravitational Wave Sources: Evolutionary Channels, Rates, and Physical Properties
• Coalescence of Two Spinning Black Holes: An Effective One-Body Approach
• Merging binary black holes formed through chemically homogeneous evolution in short-period stellar binaries
• The Evolution of Compact Binary Star Systems
• Secular evolution of compact binaries near massive black holes: gravitational wave sources and other exotica
• Extracting distribution parameters from multiple uncertain observations with selection biases
• The chemically homogeneous evolutionary channel for binary black hole mergers: rates and properties of gravitational-wave events detectable by advanced LIGO
• Merging black hole binaries in galactic nuclei: implications for advanced-LIGO detections
• Formation and Evolution of Compact Object Binaries in AGN Disks
• The progenitors of compact-object binaries: impact of metallicity, common envelope and natal kicks
• The Kozai Mechanism and the Evolution of Binary Supermassive Black Holes
• The Formation of Eccentric Compact Binary Inspirals and the Role of Gravitational Wave Emission in Binary-Single Stellar Encounters
• Black Holes: The Next Generation -- Repeated Mergers in Dense Star Clusters and their Gravitational-Wave Properties
• Analysis of spin precession in binary black hole systems including quadrupole-monopole interaction
• One Channel to Rule Them All? Constraining the Origins of Binary Black Holes using Multiple Formation Pathways
• Accelerating Compact Object Mergers in Triple Systems with the Kozai Resonance: A Mechanism for "Prompt" Type Ia Supernovae, Gamma-Ray Bursts, and Other Exotica
• Alignment of the spins of supermassive black holes prior to coalescence
• Lidov-Kozai Cycles with Gravitational Radiation: Merging Black Holes in Isolated Triple Systems
• Black Hole Mergers in Galactic Nuclei Induced by the Eccentric Kozai-Lidov Effect
• Post-Newtonian Dynamics in Dense Star Clusters: Highly-Eccentric, Highly-Spinning, and Repeated Binary Black Hole Mergers
• Post-Newtonian Dynamics in Dense Star Clusters: Formation, Masses, and Merger Rates of Highly-Eccentric Black Hole Binaries
• Hierarchical mergers of stellar-mass black holes and their gravitational-wave signatures
• Formation of Kuiper Belt Binaries
• Migration Traps in Disks Around Supermassive Black Holes
• Compact Binary Merger Rates: Comparison with LIGO/Virgo Upper Limits
• Spin orientations of merging black holes formed from the evolution of stellar binaries
• Spin-Orbit Misalignment in Close Binaries with Two Compact Objects
• Forming short-period Wolf-Rayet X-ray binaries and double black holes through stable mass transfer
• Black hole triple dynamics: breakdown of the orbit average approximation and implications for gravitational wave detections
• The formation of very wide binaries during the star cluster dissolution phase
• Black hole and neutron star mergers in galactic nuclei
• A Post-Newtonian diagnostic of quasi-equilibrium binary configurations of compact objects
• The role of mass transfer and common envelope evolution in the formation of merging binary black holes
• AGN Disks Harden the Mass Distribution of Stellar-mass Binary Black Hole Mergers
• Rapid Eccentricity Oscillations and the Mergers of Compact Objects in Hierarchical Triples
• Hierarchical black hole mergers in young, globular and nuclear star clusters: the effect of metallicity, spin and cluster properties
• The impact of mass-transfer physics on the observable properties of field binary black hole populations
• Black Hole and Neutron Star Binary Mergers in Triple Systems: Merger Fraction and Spin-Orbit Misalignment
• Monte-Carlo simulations of black hole mergers in AGN disks: Low ${\chi }_{\mathrm{eff}}$ mergers and predictions for LIGO
• Resonant-plane locking and spin alignment in stellar-mass black-hole binaries: a diagnostic of compact-binary formation
• Mass-gap Mergers in Active Galactic Nuclei
• Multi-timescale analysis of phase transitions in precessing black-hole binaries
• Measuring eccentricity in binary black hole inspirals with gravitational waves
• Spin Evolution of Stellar-mass Black Hole Binaries in Active Galactic Nuclei
• A Triple Origin for the Heavy and Low-Spin Binary Black Holes Detected by LIGO/Virgo
• Four eccentric mergers increase the evidence that LIGO--Virgo--KAGRA's binary black holes form dynamically
• Cosmic Rates of Black Hole Mergers and Pair-Instability Supernovae from Chemically Homogeneous Binary Evolution
• Gravitational-wave astrophysics with effective-spin measurements: asymmetries and selection biases
• Formation pathway of Population III coalescing binary black holes through stable mass transfer
• The disappearance of the helium-giant progenitor of the type Ib supernova iPTF13bvn and constraints on its companion
• Quasi-secular evolution of mildly hierarchical triple systems: analytics and applications for GW-sources and hot Jupiters
• Secular Evolution Of Binaries Near Massive Black Holes: Formation of compact binaries, merger/collision products and G2-like objects
• Precessional dynamics of black hole triples: binary mergers with near-zero effective spin
• Eccentricity or spin precession? Distinguishing subdominant effects in gravitational-wave data
• No peaks without valleys: The stable mass transfer channel for gravitational-wave sources in light of the neutron star-black hole mass gap
• The impact of common envelope development criteria on the formation of LIGO/Virgo sources
• The mass gap, the spin gap, and the origin of merging binary black holes
• Chemically Homogeneous Evolution: A rapid population synthesis approach
• Black Hole and Neutron Star Binary Mergers in Triple Systems: II. Merger Eccentricity and Spin-Orbit Misalignment
• Gravitational-wave sources from mergers of binary black-holes catalyzed by fly-bys interactions in the field
• MSTAR -- a fast parallelised algorithmically regularised integrator with minimum spanning tree coordinates
• The Effect of Thermal Torques on AGN Disc Migration Traps and Gravitational Wave Populations
• Impact of gas hardening on the population properties of hierarchical black hole mergers in AGN disks
• Pathways for producing binary black holes with large misaligned spins in the isolated formation channel
• Eccentric black hole mergers via three-body interactions in young, globular, and nuclear star clusters
• Blind spots and biases: the dangers of ignoring eccentricity in gravitational-wave signals from binary black holes
• Flipping spins in mass transferring binaries and origin of spin-orbit misalignment in binary black holes
• Black-hole mergers in disklike environments could explain the observed $q$-${\chi }_{\mathrm{eff}}$ correlation
• Correlations in gravitational-wave reconstructions from eccentric binaries: A case study with GW151226 and GW170608
• The first gravitational-wave burst GW150914, as predicted by the scenario machine
• Resolving the eccentricity of stellar mass binary black holes with next generation ground-based gravitational wave detectors
• Efficient multi-timescale dynamics of precessing black-hole binaries
• Close Encounters of Wide Binaries Induced by the Galactic Tide: Implications for Stellar Mergers and Gravitational-Wave Sources
• KETJU -- resolving small-scale supermassive black hole dynamics in GADGET-4
• Residual eccentricity as a systematic uncertainty on the formation channels of binary black holes
• GW200208_222617 as an eccentric black-hole binary merger: properties and astrophysical implications
• Spin-eccentricity interplay in merging binary black holes
• Orbital Eccentricity and Spin-Orbit Misalignment Are Evidence that Neutron Star-Black Hole Mergers Form through Triple Star Evolution
• Prompt stellar and binary black hole mergers in tight triples: Insights from chemically homogeneous evolution
• Non-adiabatic dynamics of eccentric black-hole binaries in post-Newtonian theory

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