[Reblog]: Supernova origin of galactic cosmic rays confirmed

Feb 14, 2013

Began with a bang

The first direct evidence that galactic cosmic rays are accelerated within supernova remnants has been provided by observations by the Fermi Large Area Telescope collaboration. The results make use of four years of data collected by the telescope observing two supernova remnants – IC 443 and W44 – within our galaxy. The observations fit very neatly with predictions of neutral pion decay…

continua su physicsworld.com