Strange stars confronting with the observations: non-Newtonian gravity effects, or existence of a dark-matter core inside the stars
Yang, Shuhua
We find that both for the standard MIT bag model and for the density dependent quark mass model, the existence of strange stars is ruled out by the dimensionless tidal deformability of a 1.4 M_sun star of GW170817 and the mass of PSR J0740+6620. However, if non-Newtonian gravity effects are considered, strange stars can exist for certain ranges of the values of the non-Newtonian gravity parameter. An alternative explanation to the observations is to suppose that strange stars in GW170817 have a dark-matter core.