In strongly magnetized pair-plasma shocks, chaotic particle orbits inside a soliton train can fully account for dissipation and thermalization without invoking collective plasma instabilities.
Precursor Wave Amplification by Ion-Electron Coupling through Wakefield in Relativistic Shocks
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abstract
We investigated electromagnetic precursor wave emission in relativistic shocks by using two-dimensional particle-in-cell simulations. We found that the wave amplitude is significantly enhanced by a positive feedback process associated with ion-electron coupling through the wakefields for high magnetization. The wakefields collapse during the nonlinear process of the parametric decay instability in the near-upstream region, where nonthermal electrons and ions are generated. The intense coherent emission and the particle acceleration may opperate in high-energy astrophysical objects.
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astro-ph.HE 1years
2024 1verdicts
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Relativistically Magnetized Collisionless Shocks in Pair Plasma: I. Solitons, Chaos, and Thermalization
In strongly magnetized pair-plasma shocks, chaotic particle orbits inside a soliton train can fully account for dissipation and thermalization without invoking collective plasma instabilities.