We present our study of the nature of the widely-employed radio/infrared/gamma-ray correlation, and its extension to sub-galactic scales. The broadband non-thermal emissions are modelled for Milky Way-like galaxies using the GALPROP cosmic ray propagation framework. We investigate predicted signals for a collection of viewing orientations and locations. Correlation with thermal emissions due to the interstellar radiation field predicted from the same system shows that the scaling of the radio/infrared/gamma-ray correlation depends on geometry (viewing orientation, location), as well as properties of the cosmic rays and interstellar medium. The various effects are discussed
Porter et al. (Wed,) studied this question.