Screening and elastic properties of the NS crust in the OCP approximation
- 1 Department of Fundamental Physics, University of Salamanca, Plaza de la Merced s/n E-37008, Salamanca, Spain
Año de publicación: 2023
Páginas: 3703-3712
Tipo: Aportación congreso
Objetivos de desarrollo sostenible
Resumen
We study the stress tensor of the outer crust of Neutron Stars (NSs) under the approximation of the one component plasma (OCP) with screening. In our approach a system of identical ions is placed in an electron degenerate Fermi sea. By using Molecular Dynamics simulations at finite temperature we obtain the stress tensor components and associated pressure including Ewald sums for the electron screened ion potential. Our results show that a careful characterization of the crystallized phase at low temperature is necessary in order to obtain the true ground state. These ion phases are of interest for modelling the effects of large tidal forces and the gravitational wave signal linked to the violent events in binary NS mergers and possible crust crunching in NS continuous emission.
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