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A Proposed Cosmological Model to Explain the Accelerating Expansion and its Coincidence with the Observational Data | ||
| Rafidain Journal of Science | ||
| Article 10, Volume 25, Issue 4, 2014, Pages 122-131 PDF (0 K) | ||
| DOI: 10.33899/rjs.2014.88665 | ||
| Authors | ||
| Muayyad A. Al-Obayde; Saja E. Khaleel | ||
| Abstract | ||
| The aim of this research is to provide an explanation for the cosmic acceleration of a derived model (flat model which contains both matter and dark energy (ΩNR + ΩDE = 1). This model depends on two different models, one contains matter only ΩNR=1 while the other contains dark energy ΩDE = 1. The derived model shows a good matching with the observed data of supernovae type Ia. The relationships of the three models that link the illumination distance and distance modulus were drawn against redshift for the given observational data, which show that the flat universe is the closest to the observational data. It turned out that the amount of the relative density of the dark energy ΩDE is larger than the amount of the relative density of matter ΩNR. This result is considered as an explanation of the cosmic acceleration due to the presence of dark energy | ||
| Keywords | ||
| General relativity; accelerating universe; cosmological models; dark energy | ||
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