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10 Billion-Year-Old Radio Flash Rewrites Cosmic History
8 Oct
Summary
- Most distant fast radio burst detected, originating 10 billion years ago.
- The burst traveled through 80% of the universe's history.
- FRB originated in a small, young galaxy rapidly forming stars.
An intense flash of radio waves, believed to be the most distant fast radio burst (FRB) ever detected, has been observed by astronomers. This mysterious signal originated more than 10 billion years ago, when the universe was only about 3 billion years old. The burst has traveled through approximately 80% of cosmic history to reach Earth.
Dubbed FRB 20240304B, the signal was captured using the MeerKAT radio telescope in South Africa and its host galaxy was identified with NASA's James Webb Space Telescope. Data indicates the burst came from a young, very small galaxy characterized by high star formation rates and a low abundance of metals. This finding challenges existing theories about the sources of FRBs, suggesting they can occur in very nascent galactic environments.
Since their discovery in 2007, over 10,000 FRBs have been detected. These powerful, millisecond-long emissions offer a unique tool for scientists to probe the universe. By analyzing how FRBs are affected by intervening matter, astronomers can map unseen cosmic material, potentially revealing more about the early universe's composition and the prevalence of FRBs during that era.
