2024MNRAS.528.2629K -
Mon. Not. R. Astron. Soc., 528, 2629-2642 (2024/February-3)
Hyperonic uncertainties in neutron stars, mergers, and supernovae.
KOCHANKOVSKI H., RAMOS A. and TOLOS L.
Abstract (from CDS):
In this work, we delve into the temperature-dependent Equation of State (EoS) of baryonic matter within the framework of the FSU2H* hadronic model, which comprehensively incorporates hyperons and is suitable for relativistic simulations of neutron star mergers and supernovae. To assess the impact of the uncertainties in the hyperonic sector on astrophysical observables, we introduce two additional models, namely FSU2H*L (FSU2H*-Lower) and FSU2H*U(FSU2H*-Upper). These models cover the entire spectrum of variability of hyperonic potentials, as derived from experimental data. Our investigations reveal that these uncertainties extend their influence not only to the relative abundances of various particle species but also to the EoS itself and, consequently, have an impact on the global properties of both cold and hot neutron stars. Notably, their effects become more pronounced at large temperatures, owing to the increased presence of hyperons. These findings have direct implications for the outcomes of relativistic simulations of neutron star mergers and supernovae, emphasizing the need of accounting for hyperonic uncertainties to ensure the accuracy and reliability of such simulations in astrophysical contexts.
Abstract Copyright:
© 2024 The Author(s). Published by Oxford University Press on behalf of Royal Astronomical Society.
Journal keyword(s):
dense matter - equation of state - stars: neutron
Simbad objects:
7
Full paper
View the references in ADS
To bookmark this query, right click on this link: simbad:2024MNRAS.528.2629K and select 'bookmark this link' or equivalent in the popup menu