Ready-to-use Fourier domain templates for compact binaries inspiraling along moderately eccentric orbits

Abstract

We derive analytic expressions that provide Fourier domain gravitational wave (GW) response function for compact binaries inspiraling along moderately eccentric orbits. These expressions include amplitude corrections to the two GW polarization states that are accurate to the first post-Newtonian (PN) order. Additionally, our fully 3PN accurate GW phase evolution incorporates eccentricity effects up to sixth order at each PN order. Further, we develop a prescription to incorporate analytically the effects of 3PN accurate periastron advance in the GW phase evolution. This is how we provide a ready-to-use and efficient inspiral template family for compact binaries in moderately eccentric orbits. Preliminary GW data analysis explorations suggest that our template family should be required to construct analytic inspiral-merger-ringdown templates to model moderately eccentric compact binary coalescence.

32 Pages, 3 figures; Accepted for publication in Physical Review D

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• Post-Newtonian theory-inspired framework for characterizing eccentricity in gravitational waveforms
• Modeling Gravitational Wave Modes from the Inspiral of Binaries with Arbitrary Eccentricity
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• Chase Orbits, not Time: A Scalable Paradigm for Long-Duration Eccentric Gravitational-Wave Surrogates