Einstein-de Sitter model re-examined for the newly discovered SNe Ia

Details Einstein-de Sitter model re-examined for the newly discovered SNe Ia Einstein-de Sitter model re-examined for the newly discovered SNe Ia

2005-06-09

arxiv.org/abs/astro-ph/0506217v1

Mon.Not.Roy.Astron.Soc.361:1382-1386,2005

Astronomy and Astrophysics

Astrophysics

14 pages including 2 figures, to appear in the Mon. Not. Roy. Astron. Soc

Scientific paper

10.1111/j.1365-2966.2005.09275.x

Consistency of Einstein-de Sitter model with the recently observed SNe Ia by the Hubble Space Telescope is examined. The model shows a reasonable fit to the observation, if one takes into account the extinction of SNe light by the intergalactic metallic dust ejected from the SNe explosions. Though the fit to the new data is worsened considerably compared with the earlier data, it can still be regarded acceptable. We should wait for more accurate observations at higher redshifts (as expected from the coming space missions such as SNAP and JWST) in order to rule out a model, which seems to explain all the other existing observations well (some even better than the favoured $\Lambda$CDM model), is consistent with beautiful theoretical ideas like inflation and cold dark matter, and is not as speculative as the models of dark energy.

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