Nanolensed fast Radio Bursts

TL;DR

This paper proposes using nanolensed fast radio bursts as a novel method to detect and constrain clumpy dark matter objects within a specific mass range, potentially surpassing existing observational techniques.

Contribution

It introduces a new approach leveraging fast radio bursts to probe dark matter clumps, extending the mass spectrum sensitivity beyond current methods.

Findings

Potential to detect dark matter objects in the $10^{-3}M_{igodot}$ to $10^2 M_{igodot}$ range.

Could provide more sensitive constraints than Magellanic Cloud lensing observations.

Offers a method to find or rule out extended mass spectrum of clumpy dark matter.

Abstract

It is suggested that fast radio bursts can probe gravitational lensing by clumpy dark matter objects that range in mass from $10^{-3}M_{\odot}$ to $10^2 M_{\odot}$. They may provide a more sensitive probe than observations of lensing of objects in the Magellanic Clouds, and could find or rule out clumpy dark matter with an extended mass spectrum.