MeerKAT and Webb measure farthest fast radio burst
Astronomers using the James Webb Space Telescope have identified the host galaxy of the most distant fast radio burst (FRB) ever recorded. The discovery challenges existing theories, as the host is a small dwarf galaxy rather than a massive star-forming one.
Why it matters
Understanding the origins of FRBs is a major goal in astrophysics; this discovery provides new data on the types of cosmic environments that produce these mysterious, high-energy events.
First discovered in 2007, fast radio bursts are enigmatic, millisecond-long flashes of radio emission from the distant universe. Their origin remains uncertain, particularly since most are seen once and never again.
Now, astronomers using NASA’s James Webb Space Telescope have pinpointed the host galaxy of the most distant fast radio burst (FRB) seen to date. Their finding has implications for what kind of energetic event creates these bursts.
“What makes fast radio bursts interesting is that we don’t know what generates them. We have theories for what objects produce them, but we don’t have conclusive proof,” says Manisha Caleb of the University of Sydney, lead author on the study published last week in the journal Science.
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