Scintillation Timescales of Bright FRBs Detected by CHIME/FRB

Understand

We describe a pipeline to measure scintillation in fast radio bursts (FRBs) detected by CHIME/FRB in the 400-800 MHz band by analyzing the frequency structure of the FRB's spectrum.

• We use the pipeline to measure the characteristic frequency bandwidths of scintillation between $4-100$ kHz in 12 FRBs corresponding to timescales of $\sim$2-40 $\mu$s for 10 FRBs detected by CHIME/FRB.
• For the other two FRBs, we did not detect scintillation in the region our analysis is sensitive.
• We compared the measured scintillation timescales to the NE2001 predictions for the scintillation timescales from the Milky Way.