The internal composition of Neutron Stars is to this day very poorly known. In our work we present general predictions for the static observables of neutron stars (NSs) under the hypothesis of a purely nucleonic composition of the ultra-dense baryonic matter, using Bayesian inference on a very large parameter space conditioned by both astrophysical and nuclear physics constraints. We confirm that the hypothesis of a purely nucleonic composition is compatible with all the present observations and we additionally show that present observations do not exclude the existence of very massive neutron stars with mass compatible with the lighter partner of the gravitational event GW190814 measured by the LIGO-Virgo collaboration.
Organized by: Paulo Brás, Paulo Silva, Jaime Silva