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Part of the book series: International Astronomical Union / Union Astronomique Internationale ((IAUS,volume 63))

Abstract

Perhaps the most challenging problem confronting a cosmologist is to reconcile the observed large-scale structure of the Universe with the Friedmann-Lemaître cosmological models that have gained such widespread acceptance in recent years (cf. however the alternative viewpoint, as exemplified in this Symposium by Arp and others). In this review, I shall look anew at the spectrum of density inhomogeneities that survive decoupling of matter and radiation at z~1000 and provide the primordial fluctuations that can eventually generate galaxies. A closely related matter, that of the associated fluctuations in the background radiation, is discussed elsewhere in this volume by Doroshkevich, Sunyaev and Zel’dovich.

Alfred P. Sloan research fellow.

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© 1974 The International Astronomical Union

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Silk, J. (1974). The Spectrum of Density Perturbations in an Expanding Universe. In: Longair, M.S. (eds) Confrontation of Cosmological Theories with Observational Data. International Astronomical Union / Union Astronomique Internationale, vol 63. Springer, Dordrecht. https://doi.org/10.1007/978-94-010-2220-0_15

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  • DOI: https://doi.org/10.1007/978-94-010-2220-0_15

  • Publisher Name: Springer, Dordrecht

  • Print ISBN: 978-90-277-0457-3

  • Online ISBN: 978-94-010-2220-0

  • eBook Packages: Springer Book Archive

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