Astronomers reveal new details about brightest gamma-ray burst

universetoday.com

In October 2022, the Fermi Gamma-ray Space Telescope and Neil Gehrels Swift Observatory detected GRB 221009A, the brightest gamma-ray burst ever recorded. New research reveals a significant emission line at 12 MeV, lasting 40 seconds, indicating high-energy processes, possibly from matter-antimatter annihilation. This finding, with a noise fluctuation probability of less than one in half a billion, enhances understanding of gamma-ray bursts and their mechanisms.


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