Animation of Phase Velocity of MHD Waves (Friedrichs diagram)

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Phase Velocity of MHD Waves; Friedrichs diagram

Diagram for various beta-ratio, with the plasma quantities fixed at unity. The specific heat ratio, gamma, is set 5/3, thus sound speed is fixed at sqrt(5/3) ~ 1.29.

Thanks to AniS
In case you cannot use the AniS Java applet, click here to get an mpeg movie or here for mp4.