Extended Data Fig. 8: Lomb-Scargle periodograms of FRB 121102 burst arrival times (top row) along with phase histograms for two trial periods (bottom row).
From: A bimodal burst energy distribution of a repeating fast radio burst source
Left: Periods from 10−3 to 102 d. The four leftmost peaks in the periodogram are caused by daily sampling and its harmonics. The peak at ~24 d is related to the sampling window function (i.e. non-uniform sampling) over the 47 d data set, as is consistent with the broad distribution in burst phase (bottom left). Right: Periods from 1 ms to 103 s. The peak at 10 ms is a large multiple of the original sampling time and also yields no distinct concentration in burst phase.
