another theory to explain the massive outbursts of eta carinae is the idea of a deeply situated hydrodynamic explosion, blasting off parts of the star’s outer layers. the idea is that the star, even at luminosities below the eddington limit, would have insufficient heat convection in the inner layers, resulting in a density inversion potentially leading to a massive explosion. the theory has, however, not been explored very much, and it is uncertain whether this really can happen.