FRB 180916.J0158+65

During this specific quick radio burst, which lasted for around four days and appeared at seemingly random intervals, there were four days of chaotic bursts followed by 12 days of complete silence. Repeat after me. Although certain FRBs have been linked to magnetars, not all of them have been. The repeating signal in the case of 180916-J0158+65 was originating from a galaxy 500 million light-years away (they really need to come up with better names for these things).

However, the source is still a mystery. While it is conceivable that this FRB originates from a particular sort of magnetar, astronomers are unable to confirm this (scientific method and all). According to the current explanation, the supernova remnant 180916 is deformed because it is emanating from a single neutron star that has an abnormal wobble. It will need more information and research to hone in on this idea, though. However, the questioned galaxy is incredibly active, with new stars forming at a pace that is 100 times faster than what we observe in our own Milky Way.