Astronomers are captivated by ‘brightest flash ever seen’

The burst of gamma-rays — the most intense form of electromagnetic radiation — was first detected by orbiting telescopes on October 9, and its afterglow is still being watched by scientists across the world.

Astrophysicist Brendan O’Connor told AFP that gamma-ray bursts that last hundreds of seconds, as occurred on Sunday, are thought to be caused by dying massive stars, greater than 30 times bigger than our Sun.

The star explodes in a supernova, collapses into a black hole, then matter forms in a disk around the black hole, falls inside, and is spewed out in a jet of energy that travels at 99.99 percent the speed of light.
— Read on www.france24.com/en/live-news/20221014-astronomers-are-captivated-by-brightest-flash-ever-seen

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