Was there a big bang?

Börner, Gerhard; Ehlers, Jürgen

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Journal Article

Was there a big bang?

MPS-Authors

Börner, Gerhard
Geometric Analysis and Gravitation, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;

Ehlers, Jürgen
Geometric Analysis and Gravitation, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;

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Citation

Börner, G., & Ehlers, J. (1988). Was there a big bang? Astronomy and Astrophysics, 204(1-2), 1-2.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0013-5D58-D

Abstract

Friedmann-Lemaitre cosmological models excluding a big bang by an appropriate choice of a nonzero cosmological constant are shown to be invalid if quasars with a redshift z of greater than 4 are observed and if the density parameter of cold matter is larger than 0.02. The big bang is thus required if the microwave background radiation is assumed to be stellar radiation thermalized by interstellar iron needles.