On the anisotropy of the cosmological background matter and radiation distribution. II - The radiation anisotropy in models with negative spatial curvature

The expected microwave background anisotropy has been calculated on both large and small angular scales for various models with = 0.1, including all effects of spatial curvature. Both adiabatic and isothermal fluctuations have been considered, with power spectrum |δm(k∼)2 ∝ k∼n initially. The adiabatic models can probably be ruled out on the basis of their large correlation length, but if only the microwave anisotropy is considered, models with n ≳ 3 are acceptable. The microwave anisotropy is below current upper limits for all values of n considered with isothermal initial conditions.