Synthetic Spectra from Particle-in-cell Simulations of Relativistic Jets containing an initial Toroidal Magnetic Field

• DOI: 10.48550/arxiv.2404.07392
• Publication Date: 2024-04-10
• Authors: I. Duţan; Ken‐Ichi Nishikawa; A. Meli; Oleh Kobzar; C. Koehn; Yosuke Mizuno; Nicholas R. MacDo...; José L. Gómez; Kouichi Hirotani
• Keywords: Weibel instability; Astrophysical jet

The properties of relativistic jets, their interaction with the environment, and emission radiation can be self-consistently studied by using particle-in-cell (PIC) numerical simulations. Using three-dimensional (3D), PIC simulations, we present first calculated synthetic spectra head-on off-axis from electrons accelerated in cylindrical, plasma jets containing an initial toroidal magnetic field. jet particles are initially during linear stage growing instabilities, which Weibel instability (WI), kinetic Kelvin-Helmholtz (kKHI), mushroom (MI). In nonlinear stage, these instabilities dissipated generate turbulent fields accelerate further. We calculate tracing a large number near head where turbulent. Our results show basic jitter-like emitted when they travel through magnetized waves driven (WI, kKHI, MI) into regime. At low frequencies, slope spectrum is ~ 0.94, similar to that jitter radiation. relevant active galactic nuclei/blazars gamma-ray burst set ground for future studies on jets.