Speaker
Tony Bell
(Rutherford Appleton Laboratory)
Description
Cosmic rays are accelerated to a few PeV, and maybe 100PeV, in the Milky Way Galaxy. They are accelerated beyond 100EeV elsewhere. If I did not know better, I would say this could not happen, especially with such high efficiency. In this talk I discuss how acceleration to these energies pushes against the limits of theoretical credibility and how the underlying plasma physics has to be finely tuned to reach observed cosmic ray energies.
Primary author
Tony Bell
(Rutherford Appleton Laboratory)
