FRB 180916 is only the second repeating fast radio burst to be traced back to its source galaxy.
an international team of scientists has now traced FRB 180916 back to its source galaxy, finding it is very different from the one where FRB 121102 originated. Had the two galaxies had similar properties, it may have helped narrow down what could be producing the radio bursts.FRB 180916 comes from a large spiral galaxy similar to the Milky Way. At half a billion light years away, it is"is by far the closest well-localised FRB to date—about six times closer compared to FRB 121102.
What could be producing these radio bursts is a mystery."I'm really scratching my head," he said."For FRB 121102, a young magnetar—a super-magnetized neutron star—appeared like a very plausible model. For FRB 180916 a somewhat older magnetar could still fit the data, but I'm ... wondering if maybe a different source of energy e.g.
He added that the radio source of FRB 121102 was thought to have been an extremely energetic nebula surrounding it."The lack of persistent radio source with FRB 180916 is quite puzzling ... Maybe FRB 180916 had such a nebula but it has faded away because the source is much older."
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