Gravitational Lens Effect on Anisotropies of Cosmic Microwave Background.

摘要

We discuss the general feature of gravitational lens effect on anisotropies of cosmic microwave background radiation. Contrary to previous studies, we find that small angle anisotropies can be enhanced if the characteristic angular scale associated with the gravitational lens effect is comparable to the correlation angle of the cosmic microwave anisotropy. That this conclusion is physically reasonable can be rather easily understood.