13–17 sept. 2021
São José dos Campos, Brazil
Fuseau horaire America/Sao_Paulo

Relativistic Mean Field Model constrained by Astrophysical Measurements

15 sept. 2021, 16:02
1m
São José dos Campos, Brazil

São José dos Campos, Brazil

Instituto Tecnológico de Aeronáutica
Poster Poster

Orateur

M. Bruno Alves de Moura Soares (Instituto Tecnológico de Aeronáutica)

Description

In this work, we present a preliminary study where the Bayesian analysis is used to constraint saturation properties of nuclear matter. For this, an equation of state (EoS) that allows $\omega-\rho$ interactions is considered. Regarding the priors, uniform distribution on the values of saturation density, binding energy, effective mass, incompressibility, symmetry energy, and its slope at nuclear saturation density have been used. Their ranges are in accordance with the current literature. The posteriors are computed through the procedure of Bayesian inference where observational data of neutron star masses and radii are employed. These data include the gravitational wave event GW170817 and also the recent data published from NICER. The results indicates lower values of $L_0$ for the EoS with $\omega-\rho$ interactions if compared to $\sigma^3-\sigma^4$ ones, $63.3^{+13.5}_{-9.7}$ MeV and $82.3^{+4.8}_{-3.2}$ MeV respectively.

Auteurs principaux

M. Bruno Alves de Moura Soares (Instituto Tecnológico de Aeronáutica) Dr César H Lenzi (Instituto Tecnológico de Aeronáutica) Dr Mariana Dutra (Instituto Tecnológico de Aeronáutica)

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