ROTATION CURVES OF GALAXIES - MISSING MASS OR MISSING PHYSICS

The rotation curves of galaxies are modelled using very special proper ties of an hydrodynamically turbulent fluid possessing helicity fluctu ations. The development of correlations among these fluctuations leads to the formation of organized structures characterized by a new flat branch of the spatial energy spectrum in addition to the well known Ko lmogorov spectrum. It is proposed that the flat nature of the rotation curves of galaxies may be a result of the energy cascading processes occuring in turbulent galactic atmospheres. Thus, in this model, there is no need of invoking dark matter to account for the flat rotation c urves of galaxies.