Theoretical Overview of Cosmic Microwave Background Anisotropy

Details Theoretical Overview of Cosmic Microwave Background Anisotropy Theoretical Overview of Cosmic Microwave Background Anisotropy

2003-05-29

arxiv.org/abs/astro-ph/0305591v1

Astronomy and Astrophysics

Astrophysics

Review written for the Carnegie Observatories Centennial Symposium II. Includes the angular power spectrum and parameter fits

Scientific paper

The theoretical basis for the prediction of anisotropies in the cosmic microwave background is very well developed. Very low amplitude density and temperature perturbations produce small gravitational effects, leading to an anisotropy that is a combination of temperature fluctuations at the surface of last scattering and gravitational redshifts both at last scattering and along the path to the observer. All of the primary anisotropy can be handled by linear perturbation theory, which allows a very accurate calculation of the predicted anisotropy from different models of the Universe.

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