Energy distribution of compressible turbulence and the evolution of particle temperatures. (a) Energy distribution of compressible turbulence in the k_⊥ − k_∥ space. (a1) Zoomed-in view corresponding to the red dashed box in panel (a). (b) 1D integrated PSD. (c) Temporal evolution of the electron temperature components, normalized by initial temperature. (d) The same as panel (c) but for protons.