Repeating behaviour of FRB 121102: periodicity, waiting times and energy distribution

Understand

Detections from the repeating fast radio burst FRB 121102 are clustered in time, noticeable even in the earliest repeat bursts.

• Recently, it was argued that the source activity is periodic, suggesting that the clustering reflected a not-yet-identified periodicity.
• We performed an extensive multi-wavelength campaign with the Effelsberg telescope, the Green Bank telescope and the Arecibo Observatory to shadow the Gran Telescope Canaria (optical), NuSTAR (X-ray) and INTEGRAL (gamma-ray).
• We detected 36 bursts with Effelsberg, one with a pulse width of 39\,ms, the widest burst ever detected from FRB 121102.