Astronomers have caught a cosmic explosion doing something it was never supposed to do, firing off three powerful gamma-ray ...

Data collected using multiple NSF NOIRLab facilities reveal a gamma-ray burst that lasted more than seven hours and ...

Astronomers using the James Webb Space Telescope report that a powerful gamma-ray burst detected in March may have been ...

Researchers have discovered nine new sources of high-energy photons in the Milky Way, including some of the most energetic gamma rays ever detected. By studying these gamma-ray sources, which all seem ...

The longest gamma-ray burst ever recorded did not behave like a quick cosmic flash. Instead, it burned across the sky for ...

Earlier this year, it was reported that Earth was hit by the brightest gamma-ray bursts seen since the dawn of civilization. Now, a team of astronomers has assigned a value to the energy contained in ...

The blank horizontal bar is the galactic plane area, which was excluded from the analysis to avoid strong astrophysical ...

High altitude: composite image of ASgamma showing the aboveground and underground detectors. (Courtesy: ASgamma) Cosmic gamma rays with energies as high as 450 TeV (10 12 eV) have been observed by the ...

When stars die out, they emit gamma-ray bursts. Although scientist can calculate the explosion energy from dying stars, it is difficult to do when the conversion efficiency is low or unknown. Using ...

The finding may help physicists better understand where cosmic rays — energetic particles that permeate the universe — come from. Researchers have discovered nine new sources of high-energy photons in ...