Nanolensed Fast Radio Bursts

Abstract

It is suggested that fast radio bursts can probe gravitational lensing by clumpy dark matter objects that range in mass from 10 −3 M ⊙ –10 2 M ⊙ . They may provide a more sensitive probe than observations of lensings of objects in the Magellanic Clouds, and could find or rule out clumpy dark matter with an extended mass spectrum.