Elucidating the Progenitors of Fast Radio Bursts with Chandra

Fast radio bursts (FRBs) are bright, millisecond pulses discovered at radio wavelengths whose progenitors are currently unknown. There is a growing population of FRBs with sub-arcsecond localizations, which critically enable host galaxy associations. Of particular interest is the source of the hard radiation fields predominant in FRB hosts and their possible connection to AGN. In addition, recent constraints on periodicity have prompted a connection between FRBs and ultraluminous X-ray sources (ULXs). Here we request Chandra and joint VLA observations of a complete, volume-limited sample of the closest FRB host galaxies to probe the presence of AGN and bright ULXs to shed light on FRB progenitors. This proposal will constitute the largest and deepest X-ray survey of FRB hosts to date.