Fast Radio Bursts as probes of the late-time universe: a new insight on the Hubble tension

Understand

Fast Radio Bursts (FRBs) are bright radio transient events, a subset of which have been localized to their host galaxies.

• Their high dispersion measures offer valuable insights into the ionized plasma along their line of sight, enabling them to serve as probes of cosmological parameters.
• One of the major challenges in contemporary cosmology is the Hubble tension -- an unresolved discrepancy between two independent methods of determining the Universe's expansion rate, yielding differing values for the Hubble constant.
• In this study, we analyze a sample of 64 extragalactic, localized FRBs observed by various telescopes, employing Bayesian analysis with distinct likelihood functions.