Narrow-banded giant pulses from the Crab pulsar.

Through a new spectral-fitting technique on a Crab giant-pulse dataset at 400-800 MHz with the 46m dish at the Algonquin Radio Observatory, a sub-population of 6 narrow-banded out of 1578 giant pulses was discovered. The narrow-banded giant pulses are detected in both the main-pulse and inter-pulse, thereby being more likely to be caused by an intrinsic emission mechanism as opposed to a propagation effect. Fast Radio Bursts (FRBs) have demonstrated similar narrow-banded behaviour while only little has been observed in the giant pulses of pulsars. The narrow-banded giant pulses reported here yield $\Delta \nu / \nu$ on the order of 0.1, which is close to the value of 0.05 reported for the repeater FRB20190711A. Hence, the connection between FRBs and giant pulses of pulsars is further established.