Constraints on accelerating universe using ESSENCE and Gold supernovae data combined with other cosmological probes

Abstract

We use recently observed data: the 192 ESSENCE type Ia supernovae (SNe Ia), the 182 Gold SNe Ia, the 3-year WMAP, the SDSS baryon acoustic peak, the X-ray gas mass fraction in clusters and the observational $H(z)$ data to constrain models of the accelerating universe. Combining the 192 ESSENCE data with the observational $H(z)$ data to constrain a parameterized deceleration parameter, we obtain the best fit values of transition redshift and current deceleration parameter $z_T=0.632_{-0.127}^{+0.256}$, $q_0=-0.788_{-0.182}^{+0.182}$. Furthermore, using $\Lambda$CDM model and two model-independent equation of state of dark energy, we find that the combined constraint from the 192 ESSENCE data and other four cosmological observations gives smaller values of ${\Omega }_{0m}$ and $q_0$, but a larger value of $z_T$ than the combined constraint from the 182 Gold data with other four observations. Finally, according to the Akaike information criterion it is shown that the recently observed data equally supports three dark energy models: $\Lambda$CDM, $w_{de}(z)=w_0$ and $w_{de}(z)=w_0+w_1\ln (1+z)$.

18 pages, 8 figures

References in corpus (15)

• Wilkinson Microwave Anisotropy Probe (WMAP) Three Year Results: Implications for Cosmology
• Improved Distances to Type Ia Supernovae with Multicolor Light Curve Shapes: MLCS2k2
• A Dark Energy Model Characterized by the Age of the Universe
• Crossing the Phantom Divide: Theoretical Implications and Observational Status
• Robust Dark Energy Constraints from Supernovae, Galaxy Clustering, and Three-Year Wilkinson Microwave Anisotropy Probe Observations
• Interacting Holographic Phantom
• Reconstruction of the deceleration parameter and the equation of state of dark energy
• Constraints on modified Chaplygin gas from recent observations and a comparison of its status with other models
• Agegraphic dark energy as a quintessence
• Top ten accelerating cosmological models
• Holographic dark energy in a cyclic universe
• Tension and Systematics in the Gold06 SnIa Dataset
• Observational constraints on the acceleration of the Universe
• Current constraints on interacting holographic dark energy
• Information-theoretic model selection applied to supernovae data

Cited by in corpus (17)

• Constraints on kinematic models from the latest observational data
• Observational constraint on generalized Chaplygin gas model
• Combined constraints on modified Chaplygin gas model from cosmological observed data: Markov Chain Monte Carlo approach
• Cosmological constraints on generalized Chaplygin gas model: Markov Chain Monte Carlo approach
• Probing modified gravity theories with multiple measurements of high-redshift quasars
• Dark Energy and Dark Matter unification via superfluid Chaplygin gas
• A more general interacting model of holographic dark energy
• Geometrical Diagnostics for Generalized Chaplygin Gas
• Does accelerating universe indicates Brans-Dicke theory
• Cosmological constraints on the generalized holographic dark energy
• Can cosmic acceleration be caused by exotic massless particles?
• Observational Constraints on the Normal Branch of a Warped DGP Cosmology
• First cosmological constraints on the Superfluid Chaplygin gas model
• Time-dependent extra dimension and higher-dimensional modifications to the matter content in FRW spacetimes
• Time variable cosmological constant of holographic origin with interaction in Brans-Dicke theory
• Statefinder analysis of the superfluid Chaplygin gas model
• The importance of scalar fields as extradimensional metric components in Kaluza-Klein models