A new measurement of the Hubble constant using Fast Radio Bursts

Understand

Fast radio bursts (FRBs) are very short and bright transients visible over extragalactic distances.

• The radio pulse undergoes dispersion caused by free electrons along the line of sight, most of which are associated with the large-scale structure (LSS).
• The total dispersion measure therefore increases with the line of sight and provides a distance estimate to the source.
• We present the first measurement of the Hubble constant using the dispersion measure -- redshift relation of FRBs with identified host counterpart and corresponding redshift information.