  In this work we study the parameters of the extended $\sigma$-$\omega$ model
for neutron star matter by a Bayesian analysis on state-of-the-art
multi-messenger astronomy observations, namely mass, radius and tidal
deformabilities. We have considered three parameters of the model, the Landau
mass $m_L$, the nuclear compressibility $K_0$, and the value of the symmetry
energy $S_0$, all at saturation density $n_0$.
  As a result, we are able to estimate the values of the Landau mass of f $m_L
= 739\pm17$ MeV, whereas the values of $K_0$ and $S_0$ fall within already
known empirical values. Furthermore, for neutron stars we find the most
probable value of 13 km $<R_{1.4}<$ 13.5 km and the upper mass limit of
$M_{max} \approx 2.2$ M$_{\odot}$.
