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arXiv · 2008.00213

Proto-neutron stars with heavy baryons and universal relations

Adriana R. Raduta·Micaela Oertel·Armen Sedrakian
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Abstract

We use covariant density functional theory to obtain the equation of state (EoS) of matter in compact stars at non-zero temperature, including the full baryon octet as well as the $Δ(1232)$ resonance states. Global properties of hot $Δ$-admixed hypernuclear stars are computed for fixed values of entropy per baryon ($S/A$) and lepton fraction ($Y_L$). Universal relations between the moment of inertia, quadrupole moment, tidal deformability, and compactness of compact stars are established for fixed values of $S/A$ and $Y_L$ that are analogous to those known for cold catalyzed compact stars. We also verify that the $I$-Love-$Q$ relations hold at finite temperature for constant values of $S/A$ and $Y_L$.

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Adriana R. Raduta, Micaela Oertel, Armen Sedrakian. 2020-08-01. Proto-neutron stars with heavy baryons and universal relations. https://doi.org/10.1093/mnras%2Fstaa2491

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