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GRB 121024A, observed an unusual gamma-ray afterglow

Gamma-ray burst 121024A, as seen on the day of burst by ESO’s Very Large Telescope (VLT) in Chile. Only a week later the source had faded completely. Credit: Dr Klaas Wiersema, University of Leicester, UK and Dr Peter Curran, ICRAR.

Research from an international team of scientists led by the University of Leicester has discovered for the first time that one of the most powerful events in our Universe, Gamma-Ray Bursts (GRB), behave differently than previously thought. The study, published in the prestigious scientific journal Nature, uses evidence from observation of a GRB to rule out most of the existing theoretical predictions concerning the afterglow of the explosions.

Nature: Circular polarization in the optical afterglow of GRB 121024A

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