Strange stars with a mirror-dark-matter core confronting with the observations of compact stars

Abstract

We investigate the structure and the tidal deformability of strange stars with a mirror-dark-matter core for the standard MIT bag model. We find that to explain the observations of GW170817, PSR and PSR simultaneously, strange stars in GW170817 should have a mirror-dark-matter core although it is unnecessary for PSR and PSR to contain one. More generally, our study leads to the result that for the standard MIT bag model, the observations of compact stars mentioned above could serve as evidence for the existence of a dark-matter core inside strange stars.