NASA, Fermi Sharpens its High Energy View 4 K

Major improvements to methods used to process observations from NASA s Fermi Gammaray Space Telescope have yielded an expanded, higherquality set of data that allows astronomers to produce the most detailed census of the sky yet made at extreme energies. By carefully reexamining every gammaray and particle detection by the Large Area Telescope (LAT) since Fermi s 2008 launch, scientists improved their knowledge of the detector s response to each event and to the background environment in which it was me