Nonlinear evolution of parallel propagating Alfven waves: Vlasov - MHD simulation

TL;DR

This paper uses a Vlasov-MHD simulation to study the nonlinear evolution of parallel propagating Alfvén waves, demonstrating its effectiveness in modeling Alfvénic turbulence relevant to solar phenomena.

Contribution

The study introduces and validates a Vlasov-MHD model for simulating nonlinear Alfvén wave evolution, applicable to solar coronal heating and solar wind acceleration.

Findings

Vlasov-MHD model accurately simulates Alfvén wave evolution in linear and nonlinear stages.

Model is suitable for studying solar coronal heating.

Model can be used to analyze solar wind acceleration.

Abstract

Nonlinear evolution of circularly polarized Alfv\'en waves are discussed by using the recently developed Vlasov-MHD code, which is a generalized Landau-fluid model. The numerical results indicate that as far as the nonlinearity in the system is not so large, the Vlasov-MHD model can validly solve time evolution of the Alfv\'enic turbulence both in the linear and nonlinear stages. The present Vlasov-MHD model is proper to discuss the solar coronal heating and solar wind acceleration by Alfve\'n waves propagating from the photosphere.