Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994ap%26ss.214..115t&link_type=abstract
Astrophysics and Space Science, Vol. 214, No. 1-2, Proceedings of the second United Nations/European Space Agency Workshop, Bogo
Astronomy and Astrophysics
Astrophysics
1
Anisotropic Media, Cosmic Background Explorer Satellite, Cosmology, Microwave Emission, Perturbation, Power Spectra, Radiant Flux Density, Radiation Distribution
Scientific paper
Cosmic Background Explorer's (COBE's) discovery of anisotropies in the microwave background radiation has triggered a burst of activity in the theoretical field. More than 17 possible effects of cosmological or astrophysical origin may contribute to the observed signal, none in particular has been singled out by COBE. An attempt to summarize the most important consequences of the measurement of anisotropies has been made. Particular attention has been placed on the implications of COBE's results on the shape of the spectrum of primordial density perturbations. An analysis of the angular power spectrum derived from COBE's data indicates that the index of a power law spectrum of primordial fluctuations can have values less than the index predicted by inflation. A description of COBE's anisotropy experiment and the first year's results are presented.
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