Additional bursts at 1.4GHz for FRB 121102

We reanalyzed the data used by Gourdji+ (2019ApJ...877L..19G) and detected 93 additional bursts using our single-pulse search pipeline. In total, we detected 133 bursts in three hours of data at a center frequency of 1.4GHz using the Arecibo telescope, and develop robust modeling strategies to constrain the spectro-temporal properties of all of the bursts in the sample.

Most of the burst profiles show a scattering tail, and burst spectra are well modeled by a Gaussian with a median width of 230MHz. We find a lack of emission below 1300MHz, consistent with previous studies of FRB 121102. We also find that the peak of the log-normal distribution of wait times decreases from 207 to 75s using our larger sample of bursts, as compared to that of Gourdji et al. Our observations do not favor either Poissonian or Weibull distributions for the burst rate distribution.