Effect of the Global Rotation of the Universe on the Formation of Galaxies

Abstract

The effect of the global rotation of the universe on the formation of galaxies is investigated. It is found that the global rotation provides a natural origin for the rotation of galaxies, and the morphology of the objects formed from gravitational instability in a rotating and expanding universe depends on the amplitude of the density fluctuation, different values of the amplitude of the fluctuation lead to the formation of elliptical galaxies, spiral galaxies, and walls. The global rotation gives a natural explanation of the empirical relation between the angular momentum and mass of galaxies: $J\propto M^{5/3}$. The present angular velocity of the universe is estimated, which is $\sim 10^{-13} rad yr^{-1}$.