LIMITS ON ANISOTROPY AND INHOMOGENEITY FROM THE COSMIC BACKGROUND RADIATION,
Astrophysics
2016-08-30 v1
Abstract
We consider directly the equations by which matter imposes anisotropies on freely propagating background radiation, leading to a new way of using anisotropy measurements to limit the deviations of the Universe from a Friedmann-Robertson-Walker (FRW) geometry. This approach is complementary to the usual Sachs-Wolfe approach: the limits obtained are not as detailed, but they are more model-independent. We also give new results about combined matter-radiation perturbations in an almost-FRW universe, and a new exact solution of the linearised equations.
Keywords
Cite
@article{arxiv.astro-ph/9501016,
title = {LIMITS ON ANISOTROPY AND INHOMOGENEITY FROM THE COSMIC BACKGROUND RADIATION,},
author = {Roy Maartens and George F. R. Ellis and William R. Stoeger},
journal= {arXiv preprint arXiv:astro-ph/9501016},
year = {2016}
}
Comments
18 pages Latex.