Mar 10 – 14, 2025
Centro Cultural da UFRGS
America/Sao_Paulo timezone

Constraining the neutron star equation of state by including the isoscalar-vector and isovector-vector coupling using the Bayesian approach

Mar 12, 2025, 5:44 PM
2m
Centro Cultural da UFRGS

Centro Cultural da UFRGS

Rua Eng. Luiz Englert, 333 - Porto Alegre-RS

Speaker

Dr Deepak Kumar (Institute of Physics)

Description

We constrain the nuclear matter equation of state by including the isoscalar-vector and isovector-vector coupling using the Bayesian approach. We use the recent observation GW190814 (R. Abbott et al 2020 ApJL 896 L44) for the compact star of mass 2.6 M⊙ along with the nuclear saturation properties for finite and infinite nuclear matter at saturation properties at saturation and supra-saturation. Here we see that the cross coupling between isocalar-vector and isovector-vector is more effective to reach such high mass of compact star. We use FSUGold and IU-FSU parameters as the references. Finally, we discuss the effects of such coupling on the non-radial oscillations of neutron stars

Authors

Dr Deepak Kumar (Institute of Physics) Dr Mrutunjaya Bhuyan (Instituto Tecnologico de Aeronautica) Pradip Kumar Sahu (Institute of Physics (IN))

Presentation materials

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