MAGIC telescopes observe nova explosion https://www.mpg.de/18529322/0412-phys-nova-outbursts-a-new-source-for-cosmic-rays-151955-x
In a nova explosion, scientists observe extremely high gamma rays with the MAGIC telescopes. It originates from energetic protons that are accelerated in the shock front. These protons contribute locally to cosmic rays.
After the explosion, several shock fronts propagated through the stellar wind from