When the core of massive star collapses, it can form a black hole. Some of the surrounding matter escapes in the form of powerful jets that rush outward at almost the speed of light in opposite directions, as illustrated here. Normally jets from collapsing stars produce gamma rays for many […]

Impression of a GRB outflow showing the prompt phase (gamma-ray flash), reverse shock and forward shock. Credit: Nuria Jordana-Mitjans Astrophysicists from the University of Bath in the UK find the magnetic field in gamma-ray bursts is scrambled after the ejected material crashes into, and shocks, the surrounding medium. An international […]

Artist’s impression of a relativistic jet of a gamma-ray burst (GRB), breaking out of a collapsing star, and emitting very-high-energy photons. Credit: DESY, Science Communication Lab Observation challenges established theory of gamma-ray bursts in the universe. Scientists have gained the best view yet of the brightest explosions in the universe: […]

The afterglow of SGRB181123B, captured by the Gemini North telescope. The afterglow is marked with a circle. Credit: International Gemini Observatory/NOIRLab/NSF/AURA/K. Paterson & W. Fong (Northwestern University). Image processing: Travis Rector (University of Alaska Anchorage), Mahdi Zamani & Davide de Martin Rare event occurred 10 billion lightyears away, 3.8 billion […]