Fermi-type acceleration of interstellar ions driven by high-energy lepton plasma flows
Thursday, December 3, 2015 - 06:01
in Astronomy & Space
Stochastic acceleration and shock acceleration are well recognized as key mechanisms for cosmic ray generation since they were first proposed by Fermi. These two mechanisms have been widely investigated via analytical models and numerical simulations, but often modeled separately. According to a recent paper published in Science China Physics, Mechanics & Astronomy 58(10), 105201 (2015) by Cui et al., the two mechanisms can occur naturally in two sequential stages when a lepton flow propagates in a background interstellar plasma.