1770001

For the first time a periodicity has been found in arepeating FRB.The detection of a 16.35?0.18 day periodicity from the repeating FRB 180916.J0158+65 by the Canadian Hydrogen Intensity Mapping Experiment Fast Radio Burst Project (CHIME/FRB) has a strong impact on our knowledge of FRBs. So far no X-ray nor gamma-ray counteparts of FRBs have beendetected. The next burst activity for this source is predicted to happen from 2020-02-03 00:51 to 2020-02-07 22:35 with a peak around 2020-02-05 07:48. With this ToO we aim at finding a high energy counterpart of this burst activity characterizing for the first time the spectral and variability properties of such event. A detection at X-rays/soft gamma rays will allow to understand the nature of this class of FRB and to put a firm constraint on possible physical models invoked to explain the mysterious FRB phenomenon. [truncated! Please see actual data for full text]