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arXiv · 0804.3135

Cosmological Constraints from Hubble parameter $H(z)$ and SN Ia observations

Hui Lin·Cheng Hao·Xiao Wang·Qiang Yuan·Ze-Long Yi·Tong-Jie Zhang·Bao-Quan Wang
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Abstract

In this paper, we use a set of observational $H(z)$ data (OHD) to constrain the $Λ$CDM cosmology. This data set can be derived from the differential ages of the passively evolving galaxies. Meanwhile, the $\mathcal {A}$-parameter, which describes the Baryonic Acoustic Oscillation (BAO) peak, and the newly measured value of the Cosmic Microwave Background (CMB) shift parameter $\mathcal {R}$ are used to present combinational constraints on the same cosmology. The combinational constraints favor an accelerating flat universe while the flat $Λ$CDM cosmology is also analyzed in the same way. We obtain a result compatible with that by many other independent cosmological observations. We find that the observational $H(z)$ data set is a complementarity to other cosmological probes.

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Hui Lin, Cheng Hao, Xiao Wang, Qiang Yuan, Ze-Long Yi, Tong-Jie Zhang, Bao-Quan Wang. 2008-12-09. Cosmological Constraints from Hubble parameter $H(z)$ and SN Ia observations. https://doi.org/10.1142/s0217732309030217

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