FRB 121102 Bursts Show Complex Time–Frequency Structure
FRB 121102 Bursts Show Complex Time–Frequency Structure
Abstract FRB 121102 is the only known repeating fast radio burst source. Here we analyze a wide-frequency-range (1–8 GHz) sample of high signal-to-noise, coherently dedispersed bursts detected using the Arecibo and Green Bank telescopes. These bursts reveal complex time–frequency structures that include subbursts with finite bandwidths. The frequency-dependent burst structure …