22–26 Jun 2026
Physics Department, University of Coimbra
Europe/Lisbon timezone

Role of the δ meson in the direct Urca cooling of neutron stars

26 Jun 2026, 16:40
25m
Physics Department, University of Coimbra

Physics Department, University of Coimbra

Rua Larga, 3004-516 - Coimbra - Portugal

Speaker

Luigi Scurto (Laboratori Nazionali del Sud, Infn)

Description

In our work, we use bayesian inference to study how the inclusion of a scalar-isovector interaction channel within a RMF framework can affect the threshold for the direct URCA process in the core of neutron stars. We also study the effect of proton pairing by including a simplified model for the proton 1S0 pairing gap. The results show that the inclusion of the new interaction channel can significantly broaden the distribution of the threshold, allowing for direct URCA even in stars below 2 solar masses.

Authors

Francesca GULMINELLI Helena Pais (University of Coimbra) Luigi Scurto (Laboratori Nazionali del Sud, Infn) Marco ANTONELLI (CNRS - LPC Caen)

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