Speaker
Description
The dynamics of binary neutron star (BNS) mergers are a unique environment to study the state of the matted at extreme conditions. In this context standard matter may undergo a phase transition to the state of deconfined quarks. It has been suggested that such a transition could leave observable imprints in the gravitational waves.
Nevertheless a similar behaviour is also reproduced by non-convex dynamics in the core of the remnant (i.e. the appearance of expansive shock waves and compressive rarefactions, also present during a first-order phase transitions).
We construct a parametrised equation of state able to control over the convexity properties of matter, transitioning from first-order transition to cross-over.
Using this equation of state, we model BNS on quasicircular orbits that merge and form a stable remnant. We systematically study the gravitational wave frequency shift using quasi-universal relations.
