Scrutinizing exotic cosmological models using ESSENCE Supernova data combined with other cosmological probes

Davis, T. M., Mörtsell, E., Sollerman, J., Becker, A. C., Blondin, S., Challis, P., Smith, R. C., Stubbs, C. W., Suntzeff, N. B., Foley, R. J., Matheson, T., Tonry, J. L., Aguilera, C., Challis, P., Clocchiatti, A., Filippenko, A. V., Foley, R. J., Garnavich, P. M., Jha, S., Krisciunas, K., Kirshner, R. P., Leibundgut, B., Li, W., Matheson, T., Miknaitis, G., Pignata, G., Rest, A., Riess, A. G., Schmidt, B. P., Smith, R. C., Spyromilio, J., Stubbs, C. W., Suntzeff, N. B., Tonry, J. L., Wood-Vasey, W. M. and Zenteno, A. (2007) Scrutinizing exotic cosmological models using ESSENCE Supernova data combined with other cosmological probes. Astrophysical journal, 666 2: 716-725. doi:10.1086/519988

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Author Davis, T. M.
Mörtsell, E.
Sollerman, J.
Becker, A. C.
Blondin, S.
Challis, P.
Smith, R. C.
Stubbs, C. W.
Suntzeff, N. B.
Foley, R. J.
Matheson, T.
Tonry, J. L.
Aguilera, C.
Challis, P.
Clocchiatti, A.
Filippenko, A. V.
Foley, R. J.
Garnavich, P. M.
Jha, S.
Krisciunas, K.
Kirshner, R. P.
Leibundgut, B.
Li, W.
Matheson, T.
Miknaitis, G.
Pignata, G.
Rest, A.
Riess, A. G.
Schmidt, B. P.
Smith, R. C.
Spyromilio, J.
Stubbs, C. W.
Suntzeff, N. B.
Tonry, J. L.
Wood-Vasey, W. M.
Zenteno, A.
Title Scrutinizing exotic cosmological models using ESSENCE Supernova data combined with other cosmological probes
Journal name Astrophysical journal   Check publisher's open access policy
ISSN 0004-637X
1538-4357
Publication date 2007
Sub-type Article (original research)
DOI 10.1086/519988
Open Access Status File (Publisher version)
Volume 666
Issue 2
Start page 716
End page 725
Total pages 10
Place of publication Philadelphia, PA, United States
Publisher Institute of Physics Publishing
Language eng
Abstract The first cosmological results from the ESSENCE supernova survey (Wood‐Vasey and coworkers) are extended to a wider range of cosmological models including dynamical dark energy and nonstandard cosmological models. We fold in a greater number of external data sets such as the recent Higher‐z release of high‐redshift supernovae (Riess and coworkers), as well as several complementary cosmological probes. Model comparison statistics such as the Bayesian and Akaike information criteria are applied to gauge the worth of models. These statistics favor models that give a good fit with fewer parameters. Based on this analysis, the preferred cosmological model is the flat cosmological constant model, where the expansion history of the universe can be adequately described with only one free parameter describing the energy content of the universe. Among the more exotic models that provide good fits to the data, we note a preference for models whose best‐fit parameters reduce them to the cosmological constant model.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Excellence in Research Australia (ERA) - Collection
School of Mathematics and Physics
 
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