DOI

https://doi.org/10.48717/2rxs-8e70

Project

EB096

Title

e-EVN: EV024B, EB096A

Abstract

There is a growing evidence for diversity in the types of host environments of fast radio bursts (FRBs). Two of the active repeating FRBs come from high star-forming dwarf galaxies and are associated with a persistent radio source (PRS) while other localised repeating bursts come from outskirts of massive galaxies, with one originating from a globular cluster. Most of the localised one-off FRBs also originate in nondescript locations in the outskirts of massive galaxies . These and a subset of repeating FRB sources do not have a strong magnetic environment and a radio nebula. The wide variety of FRB environments suggests that there could be different formation channels for FRBs, potentially strongly driven by the progenitor local environment. The presence or absence of a PRS or radio emission from star-formation, and how it correlates with FRB properties such as repetition rate, dispersion measure due to host galaxy, rotation measures etc, is a promising avenue for constraining the nature of FRB progenitors. We propose to use the EVN and e-MERLIN in L-band to conduct a deep, systematic search for possible PRSs and for star-formation associated with a new sample of well-localised FRBs.