Mildly relativistic magnetized shocks in electron-ion plasmas - I. Electromagnetic shock structure

Arianna Ligorini, Jacek Niemiec, Oleh Kobzar, Masanori Iwamoto, Artem Bohdan, Martin Pohl, Yosuke Matsumoto, Takanobu Amano, Shuichi Matsukiyo, Yodai Esaki, Masahiro Hoshino

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Mildly relativistic shocks in magnetized electron-ion plasmas are investigated with 2D kinetic particle-in-cell simulations of unprecedentedly high resolution and large scale for conditions that may be found at internal shocks in blazar cores. Ion-scale effects cause corrugations along the shock surface whose properties somewhat depend on the configuration of the mean perpendicular magnetic field, that is either in or out of the simulation plane. We show that the synchrotron maser instability persists to operate in mildly relativistic shocks in agreement with theoretical predictions and produces coherent emission of upstream-propagating electromagnetic waves. Shock front ripples are excited in both mean-field configurations and they engender effective wave amplification. The interaction of these waves with upstream plasma generates electrostatic wakefields.

Original languageEnglish
Pages (from-to)4837-4849
Number of pages13
JournalMonthly Notices of the Royal Astronomical Society
Volume501
Issue number4
DOIs
Publication statusPublished - Mar 1 2021

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

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