The mechanism of efficient electron acceleration at parallel non-relativistic shocks
Mohamad Shalaby,
Rouven Lemmerz,
Timon Thomas
et al.
Abstract:Thermal electrons cannot directly participate in the process of diffusive acceleration at electron-ion shocks because their Larmor radii are smaller than the shock transition width: this is the well-known electron injection problem of diffusive shock acceleration. Instead, an efficient pre-acceleration process must exist that scatters electrons off of electromagnetic fluctuations on scales much shorter than the ion gyro radius. The recently found intermediatescale instability provides a natural way to produce … Show more
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