# Non-Equilibrium Magnetosonic Wave Motion

## TL;DR

This paper explores the behavior of non-equilibrium magnetosonic waves, demonstrating an analogy with hydrodynamic flows and analyzing specific problems involving steady flow and wave signals in magnetized media.

## Contribution

It extends the piston analogy from hydrodynamics to non-equilibrium magnetosonic flows with aligned magnetic fields and steady conditions.

## Key findings

- The piston analogy applies to non-equilibrium magnetosonic flows.
- Steady flow along a kinked wall can be analyzed using this analogy.
- The paper provides examples involving wave signals and flow along boundaries.

## Abstract

In ideal compressible hydrodynamics there is an isomorphism between spatially one-dimensional unstea- dy and two-dimensional steady supersonic flow called piston analogy [7]. This notice shows that this is also true for non-equilibrium magnetosonic flow under alignment of undisturbed flow and magnetic field in case of steady flow. An example for two generic problems, i.e. the signal problem of radiation into a half space and steady flow along a kinked wall bounding a half space, is given.