Researchers reveal statistical properties of dispersion measure, waiting time on repeating fast radio burst

Repeating fast radio bursts (FRBs) are mysterious radio transient sources in the universe that emit a repeating radio pulse lasting for a few milliseconds. Plasma lensing is the cold, non-magnetized, and inhomogeneous plasma cloud in cosmic space, which can refract the radio signal as images with frequency-dependent properties, such as the frequency-dependent dispersion measure (DM).