Precursor Wave Amplification by Ion-Electron Coupling through Wakefield in Relativistic Shocks

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.

Metadaten
Author details:	Masanori Iwamoto ORCiD, Takanobu Amano ORCiD GND, Masahiro Hoshino ORCiD GND, Yosuke Matsumoto ORCiD GND, Jacek Niemiec ORCiD GND, Arianna Ligorini, Oleh Kobzar ORCiD, Martin Pohl ORCiD GND
DOI:	https://doi.org/10.3847/2041-8213/ab4265
ISSN:	2041-8205
ISSN:	2041-8213
Title of parent work (English):	The astrophysical journal : an international review of spectroscopy and astronomical physics ; Part 2, Letters
Publisher:	IOP Publ. Ltd.
Place of publishing:	Bristol
Publication type:	Article
Language:	English
Date of first publication:	2019/09/25
Publication year:	2019
Release date:	2020/11/02
Volume:	883
Issue:	2
Number of pages:	6
Funding institution:	Collaborative Research Project on Computer Science with High-Performance Computing in Nagoya University; JSPS KAKENHIMinistry of Education, Culture, Sports, Science and Technology, Japan (MEXT)Japan Society for the Promotion of ScienceGrants-in-Aid for Scientific Research (KAKENHI) [17H02877]; Narodowe Centrum Nauki [DEC-2013/10/E/ST9/00662]
Organizational units:	Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik und Astronomie
DDC classification:	5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
Peer review:	Referiert
Publishing method:	Open Access
	Open Access / Green Open-Access