GRB 211211A is a long-duration gamma-ray burst (GRB) detected on 11 December 2021. It is notable for being the first well-observed long GRB to show compelling evidence for an associated kilonova, indicating that its progenitor was a compact binary merger rather than the collapse of a massive star.
GRB 211211A is a long-duration gamma-ray burst (GRB) detected on 11 December 2021. It is notable for being the first well-observed long GRB to show compelling evidence for an associated kilonova, indicating that its progenitor was a compact binary merger rather than the collapse of a massive star.
Source: Wikipedia "GRB 211211A" · CC BY-SA 4.0
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