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 ...

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 strongest explosions in the universe produce even more energetic radiation than previously known: Using specialised telescopes, two international teams have registered the highest energy gamma ...

Gamma-ray bursts (GRBs) are among the most powerful explosions in the universe, second only to the Big Bang. The majority of ...

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 ...

There is no strict theoretical limit on the highest energy of astrophysical gamma rays, so far as I know, but there are some practical limitations. The first is the energy of the particle that ...

BEIJING -- China's cosmic ray observatory has detected ultra-high-energy gamma-ray radiation from the tail region of a pulsar, indicating a robust particle acceleration process in this area, according ...

Earlier this year, it was reported that the 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 ...

Researchers have observed a gamma-ray burst with an afterglow that featured the highest energy photons -- a trillion times more energetic than visible light -- ever detected in a burst. Gamma-ray ...