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We report on the lowest-frequency detection to date of three bursts from thefast radio burst FRB 180916, observed at 328 MHz with the Sardinia RadioTelescope (SRT). The SRT observed the periodic repeater FRB 180916 for fivedays from 2020 February 20 to 24 during a time interval of active radiobursting, and detected the three bursts during the first hour of observations;no more bursts were detected during the remaining ~ 30 hours. Simultaneous SRTobservations at 1548 MHz did not detect any bursts. Burst fluences are in therange 37 to 13 Jy ms. No relevant scattering is observed for these bursts. Wealso present the results of the multi-wavelength campaign we performed on FRB180916, during the five days of the active window. Simultaneously with the SRTobservations, others with different time spans were performed with the NorthernCross at 408 MHz, with XMM-Newton, NICER, INTEGRAL, AGILE, and with the TNG andtwo optical telescopes in Asiago, which are equipped with fast photometers.XMM-Newton obtained data simultaneously with the three bursts detected by theSRT, and determined a luminosity upper limit in the 0.3-10 keV energy range of~$10^{45}$ erg/s for the burst emission. AGILE obtained data simultaneouslywith the first burst and determined a fluence upper limit in the MeV range formillisecond timescales of $ 10^{-8}$ erg cm$^{-2}$.Our results show thatabsorption from the circumburst medium does not significantly affect theemission from FRB 180916, thus limiting the possible presence of asuperluminous supernova around the source, and indicate that a cutoff for thebursting mechanism, if present, must be at lower frequencies. Ourmulti-wavelength campaign sensitively constrains the broadband emission fromFRB 180916, and provides the best limits so far for the electromagneticresponse to the radio bursting of this remarkable source of fast radio bursts.

The lowest frequency Fast Radio Bursts: Sardinia Radio Telescope detection of the periodic FRB 180916 at 328 MHz