A Multiwavelength Study of FRB20180916B: Understanding Its Emission Mechanism

Fast radio bursts are brief, distant flashes of radio waves whose origin is still unknown. Among them, FRB 20180916B is especially important because it is nearby, repeats regularly, and shows a clear activity cycle. This makes it an ideal target for observations across multiple wavelengths. This study presents a coordinated campaign combining radio, optical, and X-ray observations. No simultaneous counterparts were detected outside the radio band. The source remains strongly radio-dominated, with no confirmed optical or high-energy emission associated with its bursts. These results place strong constraints on possible emission mechanisms. Models involving energetic shocks or bright high-energy flares are disfavoured, while a magnetospheric origin—similar to emission from magnetars—remains consistent with all observations.