Gamma light from a nova
For the first time, it has been possible to observe the outburst of a nova in very high-energy gamma light and to follow the glow and subsequent fading over a period of one month. The researchers combined the data from the H.E.S.S. observatory with those from the Fermi satellite and gained insights into the processes underlying the emission of gamma rays. The scientists were surprised to find that the nova apparently accelerates particles to the theoretical limit.