prof. Armen Sedrakjan, IFT UWr

Neutron star mergers: Equation of state and dissipative hydrodynamics.

I will discuss the recent progress in the exploration of dense matter equation of state and fluid dynamics which is largely motivated by the recent multi-messenger observation of a binary neutron star merger. In the first half of the talk, the focus will be on the relativistic density functional approaches to the dense nuclear matter with the hyperonic and delta-resonance degrees of freedom. It will be argued that the astrophysical data is consistent with the appearance of heavy baryonic degrees of freedom in compact stars. In the second part of the talk, I will discuss some transport phenomena in neutron stars and the need of including dissipative processes in modeling the fluid dynamics of binary neutron star merger such as the neutrino driven bulk viscosity.