Chiral Gravitational Waves Produced in a Helical Magnetogenesis Model

Understand

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.