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Distortions and Anisotropies of the Cosmic Background Radiation

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Part of the book series: NATO ASI Series ((ASIC,volume 219))

Abstract

The general theory of spectral distortions and angular anisotropies in the cosmic background radiation is reviewed. Constraints on the amount of energy injection allowed in the early universe are discussed. Predictions of fluctuation levels are given for small and large angle anisotropy experiments for theories of structure formation in which the fluctuations are initially Gaussian and scale-invariant, as expected in inflationary models. The texture of maps of the CMB fluctuations is discussed using the theory of two-dimensional Gaussian random fields. The implications of the recently reported large scale streaming velocities for CMB fluctuations on scales of a few degrees are considered. Using a simple model for the fuzziness of recombination, simple equations are derived which give a physical overview of the various mechanisms which lead to anisotropy in the microwave background. Secondary anisotropies that result from Compton upscat-tering of the CMB photons off inhomogeneous hot gas and redshifted dust emission from primeval galaxies are estimated.

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© 1988 D. Reidel Publishing Company

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Bond, J.R. (1988). Distortions and Anisotropies of the Cosmic Background Radiation. In: Unruh, W.G., Semenoff, G.W. (eds) The Early Universe. NATO ASI Series, vol 219. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-4015-4_9

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  • DOI: https://doi.org/10.1007/978-94-009-4015-4_9

  • Publisher Name: Springer, Dordrecht

  • Print ISBN: 978-94-010-8281-5

  • Online ISBN: 978-94-009-4015-4

  • eBook Packages: Springer Book Archive

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