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17 papers · 2 filters
Constraints on Lema\^ıtre-Tolman-Bondi models from Observational Hubble Parameter data
Hao Wang, Tong-Jie Zhang
We use the observational Hubble parameter data (OHD), both the latest observational dataset (Stern et al. 2010, referred to as SJVKS) and the simulated datasets, to constrain Lema\…
The effect of different observational data on the constraints of cosmological parameters
Yungui Gong, Qing Gao, Zong-Hong Zhu
The constraints on the CDM model from type Ia supernova (SNe Ia) data alone and BAO data alone are similar, so it is worthwhile to compare their constraints on the property of d…
Reconstructing the History of Energy Condition Violation from Observational Data
Chao-Jian Wu, Cong Ma, Tong-Jie Zhang
We study the likelihood of energy condition violations in the history of the Universe. Our method is based on a set of functions that characterize energy condition violation. FLRW…
Constraints on CDM models as holographic and agegraphic dark energy with the observational Hubble parameter data
Zhong-Xu Zhai, Tong-Jie Zhang, Wen-Biao Liu
The newly released observational data (OHD) is used to constrain CDM models as holographic and agegraphic dark energy. By the use of the length scale and time scale as…
Quadrature algorithms to the luminosity distance with a time-dependent dark energy model
Nan-Nan Yue, De-Zi Liu, Xiao-Xing Pei +3
In our previous work, we have proposed two methods for computing the luminosity distance d_{L}^Λ in LCDM model. In this paper, two effective quadrature algorithms, known as Romberg…
Hubble parameter data constraints on dark energy
Yun Chen, Bharat Ratra
We use Hubble parameter versus redshift data from Stern, et al(2010) and Gaztañaga, et al (2009) to place constraints on model parameters of constant and time-evolving dark energy…