Astronomers trace 84 bright blasts to ancient galaxies

By creating the most extensive catalog to date of high-energy radiation blasts called short gamma-ray bursts (SGRBs), astronomers have traced these mysterious emissions back to active star-forming galaxies in the distant early universe.

Astronomers examined 84 SGRBs—the brightest explosions in the universe—and pinpointed them to their galactic source of origin. They then examined the characteristics of 69 of those galaxy. The team found that 85% of the short gamma-ray bursts they studied originated in young galaxies that are actively forming stars. Additionally, the researchers discovered that the majority of these high-energy radiation bursts were emitted when the 13.8-billion-year-old universe was young.

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