A luminous fast radio burst that probes the Universe at redshift 1

Understand

Fast radio bursts (FRBs) are millisecond-duration pulses of radio emission originating from extragalactic distances.

• Radio dispersion on each burst is imparted by intervening plasma mostly located in the intergalactic medium.
• We observe a burst, FRB 20220610A, in a morphologically complex host galaxy system at redshift $z=1.016 \pm 0.002$.
• The burst redshift and dispersion are consistent with passage through a substantial column of material from the intergalactic medium.