1420030

We propose to observe the repeating fast radio burst FRB 121102 using the Integral satellite and the Arecibo Effelsberg and Nancay radio telescopes in order to search for a high energy emission simultaneously with radio measurements and to look for a possible afterglow. Fast radio bursts (FRBs) are bright flashes of radio waves that last only a few thousandths of a second whose origin is currently unknown. Initially thought to come from a cataclysmic and unique event the recent detection of repeating bursts from FRB 121102 at a frequency of 3 bursts/hour indicate that they may originate from different types of progenitors. Giant flares from magnetars or giant radio pulses from pulsars are possible sources of the FRBs. In such detecting a high energy signal (burst and/or afterglow) from FRB 121102 will help to define the class of the object responsible of this huge energetic event and to better characterize the physics at work in such astronomical system. The timing capabilities of the X and gamma-rays instruments on board the Integral satellite (better that 100 microseconds for JEM-X IBIS and SPI - SPI/ACS with 50 msec time resolution not being r^ant at least for the burst detection -) combined with the exquisite timing resolution supplied by the Nancay Radio telescope and other major radio facilities in the world as Arecibo and Effelsberg will be even if presently submitted as an exploratory programme the first step to study in the high energy range this new and promising new class of astronomical objects. [truncated! Please see actual data for full text]