# Scrutinizing Exotic Cosmological Models Using ESSENCE Supernova Data Combined With Other Cosmological Probes

## Abstract

The first cosmological results from the ESSENCE supernova survey (Wood-Vasey et al. 2007) are extended to a wider range of cosmological models including dynamical dark energy and non-standard cosmological models. We fold in a greater number of external data sets such as the recent Higher-z release of high-redshift supernovae (Riess et al. 2007) 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. Amongst 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.

- Authors:
- more »

- Publication Date:

- Research Org.:
- Stanford Linear Accelerator Center (SLAC)

- Sponsoring Org.:
- USDOE

- OSTI Identifier:
- 898146

- Report Number(s):
- SLAC-PUB-12320

astro-ph/0701510; TRN: US200706%%399

- DOE Contract Number:
- AC02-76SF00515

- Resource Type:
- Journal Article

- Resource Relation:
- Journal Name: Submitted to Astrophys.J.

- Country of Publication:
- United States

- Language:
- English

- Subject:
- 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; COSMOLOGICAL CONSTANT; COSMOLOGICAL MODELS; PROBES; STATISTICS; SUPERNOVAE; UNIVERSE; Astrophysics,ASTRO

### Citation Formats

```
Davis, Tamara M., Mortsell, E., Sollerman, J., Becker, A.C., Blondin, S., 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., and /Bohr Inst. /Stockholm U. /Washington U.,
Seattle, Astron. Dept. /Harvard-Smithsonian Ctr. Astrophys. /Chile U., Catolica /UC, Berkeley, Astron. Dept. /Notre Dame U. /KIPAC, Menlo Park /Texas A-M /European Southern
Observ. /NOAO, Tucson /Fermilab /Cerro-Tololo InterAmerican Obs. /Baltimore, Space Telescope Sci. /Johns Hopkins U. /Res. Sch. Astron. Astrophys., Weston Creek /Harvard U. /Inst.
Astron., Honolulu.
```*Scrutinizing Exotic Cosmological Models Using ESSENCE Supernova Data Combined With Other Cosmological Probes*. United States: N. p., 2007.
Web. doi:10.1086/519988.

```
Davis, Tamara M., Mortsell, E., Sollerman, J., Becker, A.C., Blondin, S., 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., & /Bohr Inst. /Stockholm U. /Washington U.,
Seattle, Astron. Dept. /Harvard-Smithsonian Ctr. Astrophys. /Chile U., Catolica /UC, Berkeley, Astron. Dept. /Notre Dame U. /KIPAC, Menlo Park /Texas A-M /European Southern
Observ. /NOAO, Tucson /Fermilab /Cerro-Tololo InterAmerican Obs. /Baltimore, Space Telescope Sci. /Johns Hopkins U. /Res. Sch. Astron. Astrophys., Weston Creek /Harvard U. /Inst.
Astron., Honolulu.
```*Scrutinizing Exotic Cosmological Models Using ESSENCE Supernova Data Combined With Other Cosmological Probes*. United States. doi:10.1086/519988.

```
Davis, Tamara M., Mortsell, E., Sollerman, J., Becker, A.C., Blondin, S., 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., and /Bohr Inst. /Stockholm U. /Washington U.,
Seattle, Astron. Dept. /Harvard-Smithsonian Ctr. Astrophys. /Chile U., Catolica /UC, Berkeley, Astron. Dept. /Notre Dame U. /KIPAC, Menlo Park /Texas A-M /European Southern
Observ. /NOAO, Tucson /Fermilab /Cerro-Tololo InterAmerican Obs. /Baltimore, Space Telescope Sci. /Johns Hopkins U. /Res. Sch. Astron. Astrophys., Weston Creek /Harvard U. /Inst.
Astron., Honolulu. Thu .
"Scrutinizing Exotic Cosmological Models Using ESSENCE Supernova Data Combined With Other Cosmological Probes". United States.
doi:10.1086/519988. https://www.osti.gov/servlets/purl/898146.
```

```
@article{osti_898146,
```

title = {Scrutinizing Exotic Cosmological Models Using ESSENCE Supernova Data Combined With Other Cosmological Probes},

author = {Davis, Tamara M. and Mortsell, E. and Sollerman, J. and Becker, A.C. and Blondin, S. and Challis, P. and Clocchiatti, A. and Filippenko, A.V. and Foley, R.J. and Garnavich, P.M. and Jha, S. and Krisciunas, K. and Kirshner, R.P. and Leibundgut, B. and Li, W. and Matheson, T. and Miknaitis, G. and Pignata, G. and Rest, A. and Riess, A.G. and Schmidt, B.P. and /Bohr Inst. /Stockholm U. /Washington U.,
Seattle, Astron. Dept. /Harvard-Smithsonian Ctr. Astrophys. /Chile U., Catolica /UC, Berkeley, Astron. Dept. /Notre Dame U. /KIPAC, Menlo Park /Texas A-M /European Southern
Observ. /NOAO, Tucson /Fermilab /Cerro-Tololo InterAmerican Obs. /Baltimore, Space Telescope Sci. /Johns Hopkins U. /Res. Sch. Astron. Astrophys., Weston Creek /Harvard U. /Inst.
Astron., Honolulu},

abstractNote = {The first cosmological results from the ESSENCE supernova survey (Wood-Vasey et al. 2007) are extended to a wider range of cosmological models including dynamical dark energy and non-standard cosmological models. We fold in a greater number of external data sets such as the recent Higher-z release of high-redshift supernovae (Riess et al. 2007) 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. Amongst 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.},

doi = {10.1086/519988},

journal = {Submitted to Astrophys.J.},

number = ,

volume = ,

place = {United States},

year = {Thu Jan 25 00:00:00 EST 2007},

month = {Thu Jan 25 00:00:00 EST 2007}

}