The discovery of a short-lived γ-ray burst at a surprisingly early epoch in the history of the Universe shows how much is still unknown about the evolution of the parent systems of such bursts.
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Ramirez-Ruiz, E., Lee, W. Maybe not so old after all. Nature 460, 1091–1092 (2009). https://doi.org/10.1038/4601091a
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DOI: https://doi.org/10.1038/4601091a
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