Repeating Fast Radio Bursts from Collapses of the Crust of a Strange Star

Understand

Strange stars (SSs) are compact objects made of deconfined quarks.

• It is hard to distinguish SSs from neutron stars as a thin crust composed of normal hadronic matter may exist and obscure the whole surface of the SS.
• Here we suggest that the intriguing repeating fast radio bursts (FRBs) are produced by the intermittent fractional collapses of the crust of an SS induced by refilling of accretion materials from its low-mass companion.
• The periodic/sporadic/clustered temporal behaviors of FRBs could be well understood in our scenario.