Non-detection of CHIME/FRB sources with the Arecibo Observatory

Understand

In this work, we present follow-up observations of two known repeating fast radio bursts (FRBs) and seven non-repeating FRBs with complex morphology discovered with CHIME/FRB.

• These observations were conducted with the Arecibo Observatory 327 MHz receiver.
• We detected no additional bursts from these sources, nor did CHIME/FRB detect any additional bursts from these sources during our follow-up program.
• Based on these non-detections, we provide constraints on the repetition rate, for all nine sources.