Johan Fynbo and Jens Hjorth, professors at the Dark Cosmology Centre, publishing i Nature

Gamma-ray bursts are powerful bursts of gamma-ray radiation in connection with the explosive death of massive stars. The bursts themselves are short lived – lasting typically less than a few minutes, but is followed by an afterglow that can be observed for several days after the gamma-ray burst. The afterglow is thought to occur when a shockwave is emitted from the dying star and collides with the surrounding material. It is an extreme process and researchers have made theoretical models of it, but using new observations, a team including researchers from the Niels Bohr Institute, have shown that the afterglow behaves differently than expected. The results are published in scientific journal, Nature.

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