11 citations · 29 across the 6 of their papers we have counts for
6 papers
Dependence of Particle Acceleration Efficiency on Shock Velocity in Weakly Magnetized Electron-Ion Shocks
Taiki Jikei, Daniel Groselj, Lorenzo Sironi
Using unprecedentedly long 2D particle-in-cell simulations, we study electron and ion acceleration in weakly magnetized quasi-parallel shocks, propagating at velocities ranging fro…
Ion Weibel Instability in the hybrid framework: the optimal resolution
Luca Orusa, Taiki Jikei
The study of collisionless shocks and their role in cosmic-ray acceleration has gained increasing importance through both observations and simulations. Accurately modeling the shoc…
Saturation Level of Ion Weibel Instability and Isotropization Length Scale in Electron-Ion Weibel-Mediated Shocks
Taiki Jikei, Takanobu Amano
Ion Weibel instability is considered to be the dominant physics for the dissipation in high-Mach number astrophysical shocks such as supernova remnant shocks and gamma-ray burst sh…
Enhanced Magnetic Field Amplification by Ion-Beam Weibel Instability in Weakly Magnetized Astrophysical Shocks
Taiki Jikei, Takanobu Amano, Yosuke Matsumoto
We examine the evolution of ion-beam Weibel instability at strong collisionless shocks in weakly magnetized media. We find that a finite background magnetic field substantially aff…
Critical comparison of collisionless fluid models: Nonlinear simulations of parallel firehose instability
Taiki Jikei, Takanobu Amano
Two different fluid models for collisionless plasmas are compared. One is based on the classical Chew-Goldberger-Low (CGL) model that includes a finite Larmor radius (FLR) correcti…
A non-local fluid closure for modeling cyclotron resonance in collisionless magnetized plasmas
Taiki Jikei, Takanobu Amano
A fluid description for collisionless magnetized plasmas that takes into account the effect of cyclotron resonance has been developed. Following the same approach as the Landau flu…