Chiral Gravitational Waves Produced in a Helical Magnetogenesis Model

TL;DR

This paper explores how a parity-violating magnetogenesis model can produce chiral gravitational waves and magnetic fields that are detectable by future space-based observatories, linking primordial magnetism with observable gravitational signals.

Contribution

It demonstrates that a specific magnetogenesis model can generate detectable chiral gravitational waves and magnetic fields simultaneously, with testable amplitude relations.

Findings

Detectable chiral gravitational waves can be produced by the model.

Magnetic fields strong enough for blazar observations are generated.

Gravitational waves and magnetic fields share the same chirality.

Abstract

We investigate the gravitational wave production induced by the primordial magnetic fields in a parity-violating magnetogenesis model. It is shown that the gravitational waves detectable by LISA, DECIGO or BBO and the magnetic fields strong enough to explain the blazar observation can be simultaneously produced. The magnetic fields and the gravitational waves have the same chirality and their amplitudes are related, which may also be tested by future observations.