Scrutinizing Exotic Cosmological Models Using ESSENCE Supernova Data Combined with Other Cosmological Probes | Zendy

T. M. Davis | Zendy; Edvard Mörtsell | Zendy; J. Sollerman | Zendy; A. Becker | Zendy; S. Blondin | Zendy; Peter Challis | Zendy; A. Clocchiatti | Zendy; A. V. Filippenko | Zendy; R. J. Foley | Zendy; P. Garnavich | Zendy; Saurabh W. Jha | Zendy; K. Krisciunas | Zendy; R. Kirshner | Zendy; B. Leibundgut | Zendy; W Li | Zendy; T. Matheson | Zendy; G. Miknaitis | Zendy; G. Pignata | Zendy; A. Rest | Zendy; Adam G. Riess | Zendy; B. Schmidt | Zendy; R. C. Smith | Zendy; J. Spyromilio | Zendy; C. W. Stubbs | Zendy; N. B. Suntzeff | Zendy; J. Tonry | Zendy; W. M. WoodVasey | Zendy; A. Zenteno | Zendy

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Scrutinizing Exotic Cosmological Models Using ESSENCE Supernova Data Combined with Other Cosmological Probes

Author(s) -

T. M. Davis,

Edvard Mörtsell,

J. Sollerman,

A. Becker,

S. Blondin,

Peter Challis,

A. Clocchiatti,

A. V. Filippenko,

R. J. Foley,

P. Garnavich,

Saurabh W. Jha,

K. Krisciunas,

R. Kirshner,

B. Leibundgut,

W Li,

T. Matheson,

G. Miknaitis,

G. Pignata,

A. Rest,

Adam G. Riess,

B. Schmidt,

R. C. Smith,

J. Spyromilio,

C. W. Stubbs,

N. B. Suntzeff,

J. Tonry,

W. M. WoodVasey,

A. Zenteno

Publication year - 2007

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/519988

Subject(s) - akaike information criterion , physics , lambda cdm model , cosmological constant , dark energy , astrophysics , metric expansion of space , bayesian information criterion , supernova , de sitter universe , cosmology , theoretical physics , universe , statistics , mathematics

The first cosmological results from the ESSENCE supernova survey (Wood-Vaseyet al. 2007) are extended to a wider range of cosmological models includingdynamical dark energy and non-standard cosmological models. We fold in agreater number of external data sets such as the recent Higher-z release ofhigh-redshift supernovae (Riess et al. 2007) as well as several complementarycosmological probes. Model comparison statistics such as the Bayesian andAkaike information criteria are applied to gauge the worth of models. Thesestatistics favor models that give a good fit with fewer parameters. Based on this analysis, the preferred cosmological model is the flatcosmological constant model, where the expansion history of the universe can beadequately described with only one free parameter describing the energy contentof the universe. Among the more exotic models that provide good fits to thedata, we note a preference for models whose best-fit parameters reduce them tothe cosmological constant model.Comment: Accepted by ApJ. v2: Two figures added, minor typographical corrections. 10 pages, 9 figure

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