Can primordial black holes as all dark matter explain fast radio bursts?

Primordial black holes (PBHs) are one of the most interesting nonparticle dark matter (DM) candidates. They may explain all the DM content in the Universe in the mass regime from about 10(-14) M-circle dot to 10(-11) M-circle dot. We study PBHs as the source of fast radio bursts (FRBs) via magnetic reconnection in the event of collisions between them and neutron stars (NSs) in galaxies. We investigate the energy loss of PBHs during PBH-NS encounters to model their capture by NSs. To an order-of-magnitude estimation, we conclude that the parameter space of PBHs being all DM is accidentally consistent with that to produce FRBs with a rate which is the order of the observed FRB rate.

Automated summary

The study investigates the potential of primordial black holes as sources of fast radio bursts, suggesting that PBHs may release energy through magnetic reconnection during collisions with neutron stars. It also proposes that PBHs could lose energy and be captured by neutron stars during encounters. The results indicate that the parameter space of PBHs as all dark matter is accidentally consistent with the rate of producing fast radio bursts observed.