Tidal deformations of hybrid stars with sharp phase transitions and elastic crusts

Understand

Gravitational wave astronomy is expected to provide independent constraints on neutron star properties, such as their dense matter equation of state.

• This is possible with the measurements of binary components' tidal deformability, which alter the point-particle gravitational waveforms of the late inspiral phase of neutron-star binaries.
• Although current gravitational wave detectors are not sensitive enough for a precise determination of the individual tidal deformations of the components, a large number of combined observations with future detectors will decrease uncertainties in this quantity.
• Here we provide a first study of the tidal deformability effects due to the elasticity/solidity of the crust (hadronic phase) in a hybrid neutron star, as well as the influence of a quark-hadronic phase density jump on tidal deformations.