Scalar waves from unbound orbits in a TS spacetime: PN reconstruction of the field and radiation losses in a self-force approach

TL;DR

This paper investigates scalar wave emission from unbound orbits in a Topological Star spacetime using a self-force approach, providing a Post-Newtonian reconstruction of the field and calculating radiation losses in energy and angular momentum.

Contribution

It introduces a novel self-force based method for reconstructing scalar fields and radiation losses in a Topological Star spacetime.

Findings

Successful Post-Newtonian reconstruction of the scalar field.

Quantitative estimates of energy and angular momentum radiation losses.

Analysis in both time and frequency domains.

Abstract

We analyze scalar wave emission from unbound orbits in a Topological Star spacetime. Our study uses a self-force approach and leads to a Post-Newtonian reconstruction of the field along the orbit, both in the time domain and in the frequency domain. We also compute leading-order radiation losses, namely energy and angular momentum.