Speaker
Description
The constituent of the compact star matter is a one of the most fundamental and long-standing problems in nuclear- and astro-physics. The known properties of nuclear matter, together with astronomical observations, impose stringent and interconnected constraints on theoretical descrip-
tions. In this work, by using the most general quantum hadrodynamics model including σ, ω, ρ and a0, and performing a Bayesian joint analysis of experimental nuclear matter data and astrophysical observations, we point out that the nuclear matter made of hadrons can provide a unified description of nuclear matter properties and astrophysical observations at 1σ-level. In addition, we find
that pulling in σωρa0 naturally leads to a peak structure in the speed of sound at ∼ (2 − 3) times saturation density. What we find here indicate that the future accurate neutron star radius measurement, especially the medium mass neutron stars, could distinguish the pure nucleonic stars from other hybrid models.
