@article{IwamotoAmanoHoshinoetal.2019,
  author    = {Iwamoto, Masanori and Amano, Takanobu and Hoshino, Masahiro and Matsumoto, Yosuke and Niemiec, Jacek and Ligorini, Arianna and Kobzar, Oleh and Pohl, Martin},
  title     = {Precursor Wave Amplification by Ion-Electron Coupling through Wakefield in Relativistic Shocks},
  series = {The astrophysical journal : an international review of spectroscopy and astronomical physics ; Part 2, Letters},
  volume    = {883},
  journal   = {The astrophysical journal : an international review of spectroscopy and astronomical physics ; Part 2, Letters},
  number    = {2},
  publisher = {IOP Publ. Ltd.},
  address   = {Bristol},
  issn      = {2041-8205},
  doi       = {10.3847/2041-8213/ab4265},
  pages     = {6},
  year      = {2019},
  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 operate in high-energy astrophysical objects.},
  language  = {en}
}