Gravitational waveforms from unequal-mass binaries with arbitrary spins under leading order spin-orbit coupling

TL;DR

This paper extends the analytical modeling of gravitational waveforms to include unequal-mass binaries with arbitrary spins under leading order spin-orbit coupling, broadening the applicability of waveform predictions.

Contribution

It generalizes previous models to cover more realistic binary systems with unequal masses and arbitrary spins, providing analytic gravitational waveforms.

Findings

Analytic gravitational waveforms for unequal-mass, spinning binaries.

Extension of previous models to more general binary configurations.

Applicable to quasi-circular orbits with small mass differences.

Abstract

The paper generalizes the structure of gravitational waves from orbiting spinning binaries under leading order spin-orbit coupling, as given in the work by K\"onigsd\"orffer and Gopakumar [PRD 71, 024039 (2005)] for single-spin and equal-mass binaries, to unequal-mass binaries and arbitrary spin configurations. The orbital motion is taken to be quasi-circular and the fractional mass difference is assumed to be small against one. The emitted gravitational waveforms are given in analytic form.