Astronomers have re-examined the biggest explosion ever seen, possibly the most massive explosion since the Big Bang, to ...

An international team of astronomers has performed multiwavelength observations of a gamma-ray binary system known as HESS ...

While the series of events that generated GRB 221009A (supernova explosion or creation of a black hole) remains undetermined, the gamma-ray source is located almost 2 billion light-years away ...

Chinese astronomers have used NASA's Fermi gamma-ray space telescope to conduct a long-term study of a bright gamma-ray ...

The gamma ray burst as seen by the European Space Agency’s XMM-Newton observatory. Image: ESA/XMM - Newton/M. Rigoselli (INAF) On October 9, 2022, a gamma ray burst brighter than any before seen ...

A Self-Guided Tour of the Electromagnetic Spectrum Gamma rays It's not easy to imagine how high the frequency of a high-energy gamma ray is. During the time it takes for its wave to go through one ...

This impact creates black holes and releases extremely energetic flashes of light known as gamma ray bursts (GRBs). Astronomers have been interested in GRBs since the first one was spotted in 1967.

This gamma-ray burst, researchers said on Tuesday, caused a significant disturbance in Earth's ionosphere, a layer of the planet's upper atmosphere that contains electrically charged gases called ...

A gamma-ray burst, the most powerful kind of explosion known in the universe, may have triggered a mass extinction on Earth within the past billion years, researchers say.

The emission of gamma rays with energies around 50GeV was quite a bit brighter than expected. To make it even more confusing, there were no obvious sources for the gamma rays.

Delayed gamma rays from deep space may provide the first evidence for physics beyond current theories. The MAGIC (Major Atmospheric Gamma-ray Imaging Cherenkov) telescope found that high-energy ...