International Journal of Theoretical Physics

, Volume 47, Issue 9, pp 2464–2478 | Cite as

Spacetime Curvature is Important for Cosmology Constrained with Supernova Emissions

  • Ahmet M. Öztaş
  • Michael L. Smith
  • Jan Paul


We investigate universe expansion models as functions of emission frequency ratio decline rather than redshift z, using the latest on-line, self-consistent data from 192 supernovae. We present results for simpler and some current models of cosmology, including those with dark energy (standard model) and a recent model correcting for the effect of a small time-dependent, emission frequency increase with lookback. This new model, with a gentle lookback decline of the Planck constant, and the standard model fit the data with similar confidence according to Bayesian Information Criteria. The standard model tends towards solutions high in matter density while remaining flat, but models without dark energy tend towards dilute universes with significant spacetime and curvature and a smaller Hubble constant. We conclude the normalized spacetime parameter, Ω k , should not be ignored and it includes the combined contributions of huge spacetime magnitude and curvature.


Redshift FRW Supernova Planck constant Emission 


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Copyright information

© Springer Science+Business Media, LLC 2008

Authors and Affiliations

  • Ahmet M. Öztaş
    • 1
  • Michael L. Smith
    • 2
  • Jan Paul
    • 3
  1. 1.Department of Engineering PhysicsHacettepe UniversityAnkaraTurkey
  2. 2.Anabolic LaboratoriesLLCTempeUSA
  3. 3.Division of PhysicsLuleå University of TechnologyLuleåSweden

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