# smod_equil_gravito_acoustic Submodule

This submodule defines an equilibrium in Cartesian geometry with a stratified equilibrium profile, giving rise to gravito-acoustic waves. No magnetic fields are included, such that this treats the hydrodynamic regime. The geometry can be overridden using the parfile.

This equilibrium is taken from section 7.2.3, p. 242 in Goedbloed, H., Keppens, R., & Poedts, S. (2019). Magnetohydrodynamics of Laboratory and Astrophysical Plasmas. Cambridge University Press. DOI.

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