Journal
PHYSICAL REVIEW LETTERS
Volume 119, Issue 10, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.119.105101
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Funding
- RIKEN Advanced Institute for Computational Science through the HPCI System Research project [hp150133, hp150263, hp160212, hp170231]
- JSPS KAKENHI [26400266]
- Grants-in-Aid for Scientific Research [17H02877, 16H01170, 26400266] Funding Source: KAKEN
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How electrons get accelerated to relativistic energies in a high-Mach-number quasiperpendicular shock is presented by means of ab initio particle-in-cell simulations in three dimensions. We found that coherent electrostatic Buneman waves and ion-Weibel magnetic turbulence coexist in a strong-shock structure whereby particles gain energy during shock surfing and subsequent stochastic drift accelerations. Energetic electrons that initially experienced the surfing acceleration undergo pitch-angle diffusion by interacting with magnetic turbulence and continuous acceleration during confinement in the shock transition region. The ion-Weibel turbulence is the key to the efficient nonthermal electron acceleration.
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