Memory effect from spinning unbound binaries

Abstract

We present a recently developed prescription to obtain ready-to-use gravitational wave (GW) polarization states for spinning compact binaries on hyperbolic orbits. We include leading order spin-orbit interactions, invoking 1.5PN-accurate quasi-Keplerian parametrization for the radial part of the orbital dynamics. We also include radiation reaction effects on $h_{+}$ and $h_{\times }$ during the interaction. In the GW signals from spinning binaries there is evidence of the memory effect in both polarizations, in contrast to the non-spinning case, where only the cross polarizations exhibits non-vanishing amplitudes at infinite time. We also compute 1PN-accurate GW polarization states for non-spinning compact binaries in unbound orbits in a fully parametric way, and compare them with existing waveforms.

arXiv comment7 pages, 2 figures. To appear in the Proceedings of the 2014 Sant Cugat Forum on Astrophysics. Astrophysics and Space Science Proceedings, ed. C.Sopuerta (Berlin: Springer-Verlag)

References in corpus (6)

• Phasing of gravitational waves from inspiralling eccentric binaries
• The gravitational-wave memory from eccentric binaries
• Gravitational wave energy spectrum of hyperbolic encounters
• Gravitational waves from hyperbolic encounters
• Gravitational waveforms for spinning compact binaries
• Gravitational waves from binaries on unbound orbits

Cited by in corpus (1)

• Gravitational wave memory of compact binary coalescence in the presence of matter effects