New ab initio constrained extended Skyrme equations of state for simulations of neutron stars, supernovae, and binary mergers - II. Thermal response in the suprasaturation density domain

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Table 1.

Key properties of NM and NSs.

Par.	Units	All models (S1)		Sel. models (S2)
		Med.	90% CI	Med.	90% CI
n_sat	fm⁻³	0.161	$_{- 0.0063}^{+ 0.0064}$ $^{+0.0064}_{-0.0063}$	0.161	$_{- 0.0063}^{+ 0.0059}$ $^{+0.0059}_{-0.0063}$
E_sat	MeV	−15.9	$_{- 0.33}^{+ 0.33}$ $^{+0.33}_{-0.33}$	−15.9	$_{- 0.34}^{+ 0.31}$ $^{+0.31}_{-0.34}$
K_sat	MeV	255	$_{- 30}^{+ 34}$ $^{+34}_{-30}$	271	$_{- 16}^{+ 32}$ $^{+32}_{-16}$
Q_sat	MeV	−383	$_{- 90}^{+ 120}$ $^{+120}_{-90}$	−331	$_{- 49}^{+ 100}$ $^{+100}_{-49}$
Z_sat	MeV	1250	$_{- 850}^{+ 750}$ $^{+750}_{-850}$	860	$_{- 850}^{+ 360}$ $^{+360}_{-850}$
J_sym	MeV	29.9	$_{- 1.5}^{+ 1.7}$ $^{+1.7}_{-1.5}$	31	$_{- 1.2}^{+ 1.4}$ $^{+1.4}_{-1.2}$
L_sym	MeV	46.5	$_{- 12}^{+ 12}$ $^{+12}_{-12}$	53.8	$_{- 8.5}^{+ 9.8}$ $^{+9.8}_{-8.5}$
K_sym	MeV	−122	$_{- 46}^{+ 60}$ $^{+60}_{-46}$	−130	$_{- 25}^{+ 28}$ $^{+28}_{-25}$
Q_sym	MeV	590	$_{- 220}^{+ 200}$ $^{+200}_{-220}$	386	$_{- 110}^{+ 76}$ $^{+76}_{-110}$
Z_sym	MeV	−2420	$_{- 710}^{+ 830}$ $^{+830}_{-710}$	−1850	$_{- 410}^{+ 530}$ $^{+530}_{-410}$
$m_{eff ; n}^{SNM}$ $m_{\mathrm{eff};\,n}^{\mathrm{SNM}}$	m_n	0.539	$_{- 0.088}^{+ 0.2}$ $^{+0.2}_{-0.088}$	0.634	$_{- 0.085}^{+ 0.14}$ $^{+0.14}_{-0.085}$
$m_{eff ; n}^{PNM}$ $m_{\mathrm{eff};\,n}^{\mathrm{PNM}}$	m_n	0.892	$_{- 0.13}^{+ 0.087}$ $^{+0.087}_{-0.13}$	0.915	$_{- 0.091}^{+ 0.062}$ $^{+0.062}_{-0.091}$
M_G; TOV	M_⊙	2.13	$_{- 0.088}^{+ 0.14}$ $^{+0.14}_{-0.088}$	2.09	$_{- 0.048}^{+ 0.11}$ $^{+0.11}_{-0.048}$
M_B; TOV	M_⊙	2.56	$_{- 0.13}^{+ 0.19}$ $^{+0.19}_{-0.13}$	2.5	$_{- 0.065}^{+ 0.14}$ $^{+0.14}_{-0.065}$
$c_{s ; TOV}^{2}$ $c^{2}_{\mathrm{s;TOV}}$	c²	0.885	$_{- 0.3}^{+ 0.11}$ $^{+0.11}_{-0.3}$	0.915	$_{- 0.25}^{+ 0.069}$ $^{+0.069}_{-0.25}$
n_c; TOV	fm⁻³	1.1	$_{- 0.11}^{+ 0.093}$ $^{+0.093}_{-0.11}$	1.13	$_{- 0.095}^{+ 0.063}$ $^{+0.063}_{-0.095}$
ρ_c; TOV	10¹⁵ g/cm³	2.56	$_{- 0.27}^{+ 0.26}$ $^{+0.26}_{-0.27}$	2.64	$_{- 0.23}^{+ 0.16}$ $^{+0.16}_{-0.23}$
P_c; TOV	10³⁶ dyn/cm²	1.17	$_{- 0.3}^{+ 0.24}$ $^{+0.24}_{-0.3}$	1.21	$_{- 0.26}^{+ 0.11}$ $^{+0.11}_{-0.26}$
R_1.4	km	12.1	$_{- 0.59}^{+ 0.53}$ $^{+0.53}_{-0.59}$	12.2	$_{- 0.33}^{+ 0.38}$ $^{+0.38}_{-0.33}$
Λ_1.4	–	372	$_{- 100}^{+ 130}$ $^{+130}_{-100}$	392	$_{- 63}^{+ 91}$ $^{+91}_{-63}$
R_2.0	km	11.4	$_{- 0.65}^{+ 0.82}$ $^{+0.82}_{-0.65}$	11.3	$_{- 0.47}^{+ 0.67}$ $^{+0.67}_{-0.47}$
Λ_2.0	–	21	$_{- 8.5}^{+ 17}$ $^{+17}_{-8.5}$	19.2	$_{- 6}^{+ 13}$ $^{+13}_{-6}$

Notes. We provide medians and 90% CI. The data on columns 3–4 refer to all models in run 1 of Beznogov & Raduta (2024b), while data in columns 5–6 refer to models selected according to the criteria in Sect. 3. For NM, the table lists the saturation density (n_sat) of the SNM; the energy per nucleon (E_sat), compression modulus (K_sat), skewness (Q_sat), and kurtosis (Z_sat) of the SNM at n_sat; the symmetry energy (J_sym), its slope (L_sym), compressibility (K_sym), skewness (Q_sym), and kurtosis (Z_sym) at n_sat; the Landau effective mass of the nucleons in the SNM ( $m_{eff ; n}^{SNM}$ $m_{\mathrm{eff};\,n}^{\mathrm{SNM}}$ ) and the Landau effective mass of the neutrons in the PNM ( $m_{eff ; n}^{PNM}$ $m_{\mathrm{eff};\,n}^{\mathrm{PNM}}$ ) at 0.16 fm⁻³. For NSs, the table lists the maximum gravitational (M_G; TOV) and baryonic (M_B; TOV) masses; the central particle density corresponding to the maximum mass configuration (n_c; TOV); the speed of sound squared ( $c_{s ; TOV}^{2}$ $c^{2}_{\mathrm{s;TOV}}$ ), energy density (ρ_c; TOV) and pressure (P_c; TOV) at n_c; TOV; and the radii (R_1.4, R_2.0) and tidal deformabilities (Λ_1.4, Λ_2.0) of NSs with masses equal to 1.4 M_⊙ and 2.0 M_⊙.

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