Gravitational waveforms from the evaporating ACO cosmic string loop

TL;DR

This paper derives simple, exact formulas for gravitational waveforms emitted by an evaporating cosmic string loop, showing how the wave amplitude and period decrease linearly over its lifetime.

Contribution

It provides the first explicit, exact formulas for gravitational waves from the Allen-Casper-Ottewill cosmic string loop during evaporation.

Findings

Waveforms attenuate self-similarly over time

Amplitude and period decrease linearly with time

Formulas are simple and exact

Abstract

The linearly polarized gravitational waveforms from a certain type of rotating, evaporating cosmic string - the Allen-Casper-Ottewill loop - are constructed and plotted over the lifetime of the loop. The formulas for the waveforms are simple and exact, and describe waves which attenuate self-similarly, with the amplitude and period of the waves falling off linearly with time.