Nearby gamma-ray burst defies expectations -- Science & Technology -- Sott.net

© DESY, Science Communication Lab
An artist's depiction of a gamma-ray burst's relativistic jet full of very-high-energy photons breaking out of a collapsing star. A team of scientists has gotten their best look yet at a gamma-ray burst, the
most dramatic type of explosion in the universe.
Astronomers think some of these explosions occur when a massive star — five or 10 times the mass of our sun — detonates, abruptly becoming a black hole. Gamma-ray bursts may also occur when two superdense stellar corpses called neutron stars collide, often forming a black hole. And conveniently, a gamma-ray burst that scientists watched during a few nights in 2019 likely occurred only about 1 billion light-years away from Earth, relatively close by for these dramatic events.

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