Mirror Neutron Stars

The potential for the discovery of exotic compact objects using gravitational wave observatories motivates the investigation of Mirror Neutron Stars. Mirror matter can occur in many well-motivated particle physics models, can be a subcomponent of dark matter and can be very weakly interacting with Standard Model matter. The simplest realisation of mirror matter results in a scaling-up of the masses of the quarks and leptons, resulting in a dark QCD sector with a higher confinement scale and heavier bound states. We use a simple model of the nuclear equation of state for Mirror QCD and discuss observable characteristics of Mirror Neutron Stars, including their mass-radius relationship, I-Love-Q relations, etc. We show that our results and predictions for the properties of Mirror Neutron Stars are robust even given uncertainties concerning the nuclear equation of state. Given the future reach of gravitational