Pressure (left panels) and mass–radius relation (right panels) obtained using the GM1 model to describe the pure nucleonic part of the EoS and the UC (upper panels) or the SC (lower panels) choice of parameters for the Δ–meson couplings. The interaction of d^*(2380) is assumed to be either attractive, with couplings (x_σd^*,  x_ωd^*) = (0.1, 0.1), (0.2, 0.2), and (0.3,  0.3), or repulsive, with couplings (x_σd^*,  x_ωd^*) = (−0.1,   − 0.1), (-0.2, −0.2), and ( − 0.3,   − 0.3). The recent measurement of the mass of the pulsar PSR J0740+6620 is shown with a 68.3% credibility interval ( M_⊙) and 95.4% credibility interval ( M_⊙). We also show the recent gravitational wave constraint GW170817 on the radius of a 1.4 M_⊙ NS (Annala et al. 2018) and the results obtained from the NICER experiments on the PSR J0030+04512 millipulsar (Riley et al. 2019).