Associating Fast Radio Bursts with Their Host Galaxies

Understand

The first precise localization of a fast radio burst (FRB), leading to an association with a low metallicity dwarf galaxy at $z=0.193$, has began to shed light on the nature of these mysterious bursts and the physical mechanisms that power them.

• Increasing the sample of FRBs with robust host galaxy associations is the key impetus behind on-going and upcoming searches and facilities.
• Here, we quantify the robustness of FRB-host galaxy associations as a function of localization area and galaxy apparent magnitude.
• We also explore the use of FRB dispersion measures to constrain the source redshift, thereby reducing the number of candidate hosts.