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Magnetohydrodynamic-guiding-center-particle-in-cell Method for Multiscale Plasma Kinetic Simulations
Zitao Hu, Xue-Ning Bai, Xiaochen Sun
We present the formulation, algorithm and numerical tests of the magnetohydrodynamic-particle-in-cell (MHD-PIC) method with particles treated under the guiding center approximation…
Cosmic Ray Magnetohydrodynamics: A New Two-Moment Framework with Numerical Implementation
Xihui Zhao, Xue-Ning Bai, Eve C. Ostriker
Cosmic rays (CRs) play a pivotal role in various astrophysical systems, delivering feedback over a broad range of scales. However, modeling CR transport remains challenging due to…
Linear Analysis and Simulations of the Cosmic-Ray Streaming Instability: the Importance of Oblique Waves
Shuzhe Zeng, Xue-Ning Bai, Xiaochen Sun
Cosmic-ray (CR) streaming instability (CRSI) is believed to play an important role in CR transport and CR feedback to galaxies. It drives the growth of magnetohydrodynamic (MHD) wa…
Kinetic simulations of the cosmic ray pressure anisotropy instability: cosmic ray scattering rate in the saturated state
Xiaochen Sun, Xue-Ning Bai, Xihui Zhao
Cosmic ray (CR) feedback plays a vital role in shaping the formation and evolution of galaxies through their interaction with magnetohydrodynamic waves. In the CR self-confinement…