Gravitational radiation from compact binary systems in Einstein-Maxwell-dilaton theories

TL;DR

This paper derives gravitational and scalar radiation fluxes from compact binary systems in Einstein-Maxwell-dilaton theories, enabling improved modeling of their inspiral and merger through effective-one-body dynamics.

Contribution

It introduces the calculation of energy fluxes including scalar and tensor waves in Einstein-Maxwell-dilaton theories for the first time, enhancing gravitational waveform modeling.

Findings

Derived energy fluxes for scalar and tensor waves

Included radiation reaction effects in EOB dynamics

Presented example waveforms for binary systems

Abstract

We derive the energy fluxes radiated by compact binary systems, including "hairy" black holes, in Einstein-Maxwell-dilaton theories, for circular orbits and at quadrupolar order. This enables to include in their resummed effective-one-body (EOB) dynamics the effect of the radiation reaction force at the origin of their inspiral and merger. We also exhibit typical examples of the resulting tensor and scalar waveforms.