Quark-nuclear hybrid equation of state for neutron stars under modern observational constraints

We study a family of equations state (EOS) for hybrid neutron star matter. The EOS are obtained by Maxwell construction the first-order phase transition between hadronic described relativistic density-functional ``DD2'' class with excluded volume effects and deconfined quark matter modeled an instantaneous nonlocal version Nambu--Jona-Lasinio model in $\text{SU}{(2)}_{f}$ vector interactions color superconductivity. form factor is fitted to lattice QCD results Coulomb gauge. Owing strong coupling meson diquark channels, coexistence superconductivity chiral symmetry breaking occurs. Our show approximately constant behavior squared speed sound values 0.4--0.6 density region relevant interiors. To simultaneously fulfill constraints from Neutron Star Interior Composition Explorer radius measurement PSR $\mathrm{J}0740+6620$ tidal deformability GW170817 it necessary consider $\ensuremath{\mu}$-dependent bag pressure that mimics confinement.