Fig. 2.

All 30 bursts from R1 detected with Apertif. Each burst was dedispersed to a DM of 560.5 pc cm−3. Bursts 1-29 were detected in offline searches of baseband data, while burst 30 was blindly found in real-time during TAB survey observations. All bursts are shown at a time resolution of 0.32768 ms. Bursts 1-29 are shown at a frequency resolution of 6.25 MHz over a bandwidth of 200 MHz, and were coherently dedispersed. Burst 30 was detected after a system upgrade to 300 MHz bandwidth and is shown at a frequency resolution of 9.375 MHz, and is incoherently dedispersed. The residual intra-channel DM smearing in burst 30 is of the order of one sample and hence irrelevant. Larger versions of these plots are provided at http://www.alert.eu/FRB121102/.
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