The Cosmological Models

  • Gerhard Börner
Part of the Astronomy and Astrophysics Library book series (AAL)


Before the observational evidence is presented in detail it would be convenient to establish a few theoretical concepts. The basic motivation is to describe the expansion of the universe in as simple terms as possible. In this restricted sense the classical term “cosmological model” usually means a geometrical description of the space-time structure and the smoothed-out matter and radiation content of an expanding universe. Clearly the theory then has the task of explaining the origin of the structures that are observed. How simple can the universe have been originally in order to still allow for the evolution of galaxies, stars, and ourselves? This question will be discussed in Part III.


Cosmological Model Curvature Tensor Perfect Fluid Friedmann Equation Null Geodesic 
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Copyright information

© Springer-Verlag Berlin Heidelberg 2003

Authors and Affiliations

  • Gerhard Börner
    • 1
  1. 1.Max-Planck-Institut für AstrophysikGarchingGermany

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