Precursor Wave Amplification by Ion–Electron Coupling through Wakefield in Relativistic Shocks
抄録
<jats:title>Abstract</jats:title> <jats:p>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 operate in high-energy astrophysical objects.</jats:p>
収録刊行物
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- The Astrophysical Journal Letters
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The Astrophysical Journal Letters 883 (2), L35-, 2019-09-25
American Astronomical Society
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詳細情報 詳細情報について
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- CRID
- 1361131644405537920
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- ISSN
- 20418213
- 20418205
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- データソース種別
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- Crossref
- KAKEN