HI Density Distribution Driven by Supernovae:A Simulation Study

Abstract

We model the complex distribution of atomic hydrogen (HI) in the interstellar medium (ISM) assuming that it is driven entirely by supernovae (SN). We describe the simulations and present our results in the form of spatial distributions and the associated power spectra. In both of two approaches explored here, we find remarkable correspondence with the observed statistical description of well-studied components of the ISM, wherein the spatial spectra have been found to show significant deviations from the Kolmogorov spectrum.