Toward First-principles Characterization of Cosmic-Ray Transport Coefficients from Multiscale Kinetic Simulations

• Published in: The Astrophysical journal Vol. 928; no. 2; pp. 112 - 130
• Main Author: Bai, Xue-Ning
• Format: Journal Article
• Language: English
• Published: Philadelphia The American Astronomical Society 01.04.2022; IOP Publishing
• Subjects: Alfven waves; Astrophysics; Cosmic ray showers; Cosmic rays; Damping; Environmental parameters; Estimates; Feedback; First principles; Fluid flow; Galaxies; Magnetohydrodynamics; Momentum; Particle in cell technique; Particle interactions; Plasma astrophysics; Pressure gradients; Scattering; Transport properties; Wave damping

A major uncertainty in understanding the transport and feedback of cosmic rays (CRs) within and beyond our Galaxy lies in the unknown CR scattering rates, which are primarily determined by wave–particle interaction at microscopic gyroresonant scales. The source of the waves for the bulk CR populatio...