Astrophysics and Space Science

, Volume 228, Issue 1–2, pp 313–325 | Cite as

Cosmology after COBE

  • Sergio Torres


The measured anisotropies in the temperature of the cosmic microwave background radiation (CMB) by the Cosmic Background Explorer (COBE) are consistent with models of gravitational collapse for the formation of large scale structure in the universe. The amplitude of cosmological fluctuations on the largest scales is fixed by COBE. From COBE's data it is also possible to test for the shape of the primordial spectrum. Statistical tests using COBE's two year data and based on the geometric characteristics of anisotropy spots taking into account ‘cosmic variance’ and the relevant experimental details indicate that the primordial spectrum has a slope in the rangen = 0.8 – 1.3. Possible identification of hot and cold spots of cosmological origin is also given.


Radiation Microwave Anisotropy Geometric Characteristic Cosmic Microwave Background 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Kluwer Academic Publishers 1995

Authors and Affiliations

  • Sergio Torres
    • 1
  1. 1.Centro Internacional de Física and Universidad de los AndesBogotáColombia

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