Derek Fox at Pennsylvania State University and his colleagues studied old data from the Burst Alert Telescope on NASA's Swift spacecraft to see if any gamma-ray bursts coincided with fast radio bursts (FRBs). They found one example from 2013. That challenges lower-energy explanations for FRBs and points to their source being a more catastrophic event such as a supernova or neutron star merger. But it also increases the mystery in some ways, Fox says.
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