A team of researchers has successfully demonstrated nonlinear Compton scattering (NCS) between an ultra-relativistic electron beam and an ultrahigh intensity laser pulse using the 4-Petawatt laser.

A coherent 909-Hz quasi-periodic oscillation (QPO) has been detected, briefly, in the second brightest gamma-ray burst recorded to date, GRB 230307A. This burst originated from a merger of compact ...

Light curve of the gamma-ray flare (bottom) and collection of quasi-simulated images of the M87 jet (top) at various scales obtained in radio and X-ray during the 2018 campaign. The instrument, the ...

A magnetic halo featuring coherent magnetized ridges several kiloparsecs above and below the Galactic Disk, and a gamma-ray counterpart, are revealed. They probably arise from outflows that are driven ...

Astronomers are trying to understand what caused a series of gamma ray bursts, or GRBs — the most powerful explosions in the universe. These energetic bursts are typically unleashed by the incendiary ...

Down here at the bottom of our ocean of air, it’s easy to get complacent about the hazards our universe presents. We feel safe from the dangers of the vacuum of space, where radiation sizzles and ...

Above the cloud tops, thunderstorms throb with a complex, frenetic light show of high-energy radiation. A view from a retrofitted spy plane soaring at 20 kilometers up revealed storms glowing and ...

On Sunday, Oct. 9, 2022, a pulse of intense radiation swept through the solar system so exceptional that astronomers quickly dubbed it the BOAT – the brightest of all time. The source was a gamma-ray ...

A new generation of gamma-ray detector known as AstroPix will fly aboard the agency’s Fly Foundational Robots mission, ...