208159.fig.006
Figure 6: Spinning dust emissivity per in the presence of compressible turbulence with sonic Mach number and , compared to that from uniform medium with for the CNM (red) and WIM (green). The peak emissivity is increased, and the spectrum is shifted to higher frequency due to compressible turbulence. Case 2 ( ) of orientation is considered. Figure reproduced from Hoang et al. [15].