Gravity Seminars

The properties of matter in the core of a neutron star (NS) are unknown due to the expected high densities and low temperatures. However, several studies have shown that some macroscopic properties of NSs, across a variety of equation of state (EOS) models, are tightly correlated with each other. In this talk, we explore how these correlations can be broadened throughout different stages of the NS’s life: after its birth as a proto-NS (shortly following a core-collapse supernova), during its midlife in a binary system, and just before its death as a hypermassive NS (produced shortly after the merger). In particular, we propose a new method for extracting information about the EOS by interpreting recently observed quasi-periodic oscillations in short gamma-ray bursts as oscillations of a hypermassive NS.