Space-based Gravitational Wave Observatories Will Be Able to Use Eccentricity to Unveil Stellar-mass Binary Black Hole Formation

Abstract

The measurement of eccentricity would provide strong constraints on the formation channel of stellar-mass binary black holes. However, current ground-based gravitational wave detectors will, in most cases, not be able to measure eccentricity due to orbital circularization. Space-based observatories, in contrast, can determine binary eccentricity at 0.01Hz to $e_{0.01}\gtrsim \mathcal{O}(10^{-4})$. Directly observing stellar-mass binary black holes with space-based observatories remains a challenging problem. However, observing such systems with ground-based detectors allows the possibility to identify the same signal in archival data from space-based observatories in the years previous. Since ground-based detectors provide little constraints on eccentricity, including eccentricity in the archival search will increase the required number of filter waveforms for the archival search by 5 orders of magnitudes [from $\sim \mathcal{O}(10^3)$ to $\sim \mathcal{O}(10^8)$], and will correspondingly need $\sim 8\times 10^5$ core hours (and $\sim 10^5$ GB of memory), even for a mild upper limit on eccentricity of $0.1$. In this work, we have constructed the first template bank for an archival search of space-based gravitational wave detectors, including eccentricity. We have demonstrated that even though the inclusion of eccentricity brings extra computational burden, an archival search including eccentricity will be feasible in the time frame of planned space-based observatories, and will provide strong constraints on the eccentricities of stellar-mass binary black holes.

8 pages, 4 figures, comments welcome

References in corpus (23)

• GWTC-3: Compact Binary Coalescences Observed by LIGO and Virgo During the Second Part of the Third Observing Run
• Properties and astrophysical implications of the 150 Msun binary black hole merger GW190521
• GW190521: orbital eccentricity and signatures of dynamical formation in a binary black hole merger signal
• 4-OGC: Catalog of gravitational waves from compact-binary mergers
• AGN as Potential Factories for Eccentric Black Hole Mergers
• Searching for Eccentricity: Signatures of Dynamical Formation in the First Gravitational-Wave Transient Catalogue of LIGO and Virgo
• Accurate and efficient waveforms for compact binaries on eccentric orbits
• Constraining stellar binary black hole formation scenarios with eLISA eccentricity measurements
• Science with the TianQin observatory: Preliminary results on stellar-mass binary black holes
• Constraining the orbital eccentricity of inspiralling compact binary systems with Advanced LIGO
• Eccentricity or spin precession? Distinguishing subdominant effects in gravitational-wave data
• Building a stochastic template bank for detecting massive black hole binaries
• Systematic bias on parameterized tests of general relativity due to neglect of orbital eccentricity
• Measuring the eccentricity of GW170817 and GW190425
• Bayesian parameter estimation of stellar-mass black-hole binaries with LISA
• Systematic bias on the inspiral-merger-ringdown consistency test due to neglect of orbital eccentricity
• Archival searches for stellar-mass binary black holes in LISA
• Detecting Accelerating Eccentric Binaries in the LISA Band
• Correlations in gravitational-wave reconstructions from eccentric binaries: A case study with GW151226 and GW170608
• Eccentricity of Long Inspiraling Compact Binaries Sheds Light on Dark Sirens
• Parameter Estimation of Stellar Mass Binary Black Holes under the Network of TianQin and LISA
• Eccentric Binary Neutron Star Search Prospects for Cosmic Explorer
• Improvement of the parameter measurement accuracy by the third-generation gravitational wave detector Einstein Telescope

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• BH-BH mergers with & without EM counterpart: A model for stable tertiary mass transfer in hierarchical triple systems
• Template bank to search for exotic gravitational wave signals from astrophysical compact binaries
• Fundamental Physics and Cosmology with TianQin
• Searching for gravitational waves from stellar-mass binary black holes early inspiral
• In the grip of the disk: dragging the companion through an AGN
• Signal-to-noise Ratio Analytic Formulae of the Inspiral Binary Black Holes in TianQin
• Archival Inference for Eccentric Stellar-Mass Binary Black Holes in Space-Based Gravitational Wave Observations
• Can Eccentric Binary Black Hole Signals Mimic Gravitational-Wave Microlensing?
• Global time-frequency search for stellar-mass binary black holes in LISA