Gamma-ray
NASA'S Fermi Proves Supernova Remnants Produce Cosmic Rays
“Scientists have been trying to find the sources of high-energy cosmic rays since their discovery a century ago,” said Elizabeth Hays, a member of the research…
Galaxy's gamma-ray flares erupted far from its black hole
Using a combination of data from NASA's Fermi Gamma-ray Space Telescope and the National Science Foundation's Very Long Baseline Array (VLBA), the world's…
Fermi Improves its Vision for Thunderstorm Gamma-Ray Flashes
The outbursts, known as terrestrial gamma-ray flashes (TGFs), last only a few thousandths of a second, but their gamma rays rank among the highest-energy light…
Gamma rays from galactic center could be evidence of dark matter
Gamma-ray photons seen emanating from the center of the Milky Way galaxy are consistent with the intriguing possibility that dark-matter particles are…
NASA's Fermi detects the highest-energy light from a solar flare
The discovery heralds Fermi's new role as a solar observatory, a powerful new tool for understanding solar outbursts during the sun's maximum period of…
Ghostly Gamma-ray Beams Blast from Milky Way's Center
In contrast, the Milky Way's center shows little activity. But it wasn't always so peaceful. New evidence of ghostly gamma-ray beams suggests that the Milky…