Program: GN-2022B-Q-116

Fast Radio Bursts (FRBs) are short, bright, pulses of radio emission that are extragalactic in nature. Some FRBs have been known to repeat making it easier to localize and study them in detail than the one-offs. Recent studies have shown that among the 7 FRB repeaters localized to date, their host galaxies have diverse properties, raising the possibility of multiple progenitor channels. In particular, the only two FRBs that have been confirmed to be associated with persistent radio sources (FRB121102 and FRB190520) both exploded in faint dwarf galaxies and showed evidence for a high excess dispersion measure (DM) from the host. Recent studies have argued that the identification of even 1 additional burst with similar properties would robustly identify this sub-population. CHIME/FRB has recently discovered a high DM repeating FRB, which we have also localized with the European VLBI network and we have deep realfast/VLA image with some radio sources in its field. We therefore request time for Gemini spectroscopy and imaging observations to discover the host galaxy and environment of this FRB as well as measure its redshift. This will provide vital constraints on the origin of some repeating FRBs and the importance of persistent radio sources.