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Direct observation of structure in the cosmic microwave background

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Abstract

Temperature fluctuations in the cosmic microwave background are a key prediction of cosmological models of structure formation in the early Universe. Ground-based multi-frequency radio observations of the microwave background reveal well defined features that are not of atmospheric or Galactic origin; instead, they delineate the primordial density perturbations from which the structure in the present Universe originated. The amplitude of these perturbations confirms the earlier statistical detection by the COBE satellite.

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Authors and Affiliations

  1. University of Manchester, Nuffield Radio Astronomy Laboratories, Jodrell Bank, Macclesfield, SK11 9DL, UK

    S. Hancock, R. D. Davies, C. M. Gutierrez de la Cruz & R. A. Watson

  2. Mullard Radio Astronomy Observatory, Cavendish Laboratory, Madingley Road, Cambridge, CBS OHE, UK

    S. Hancock & A. N. Lasenby

  3. Institute de Astrofisica de Canarias, 38071, La Laguna, Tenerife, Spain

    C. M. Gutierrez de la Cruz, R. A. Watson, R. Rebolo & J. E. Beckman

Authors
  1. S. Hancock
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  2. R. D. Davies
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  3. A. N. Lasenby
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  4. C. M. Gutierrez de la Cruz
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  5. R. A. Watson
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  6. R. Rebolo
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  7. J. E. Beckman
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Hancock, S., Davies, R., Lasenby, A. et al. Direct observation of structure in the cosmic microwave background. Nature 367, 333–338 (1994). https://doi.org/10.1038/367333a0

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