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Gamma-Ray Bursts and Other Observations: Constraints on Cosmographic Parameters and Dark Energy Models
Jian-wei Liu ; Fa-yin Wang
2012
Source PublicationChinese Astronomy and Astrophysics
ISSN0275-1062
Volume36Issue:2Pages:155-168
AbstractWe use the newly released Union2 SNe Ia dataset to constrain cosmographic parameters, namely the deceleration, jerk and snap parameters (q0, j0 and s0), then calibrate the five luminosity relations of Gamma-ray Bursts (GRBs) at redshift z ≤ 1.4. Assuming that the GRB luminosity relations do not evolve with the redshift, we obtain the distance moduli of 66 high-redshift GRBs. At last, we combine the observational datasets including the observations of the Cosmic Microwave Background (CMB), Baryon Acoustic Oscillation (BAO) and the 116 GRBs with known redshifts to constrain some widely-discussed dark energy models. We find that the ΛCDM model is the best according to the Bayesian Information Criterion (BIC), and the JBP model is the best according to the Akaike Information Criterion (AIC).
Subject AreaAstronomy & Astrophysics
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/8094
Collection宇宙伽马暴、中子星及相关物理研究团组
Recommended Citation
GB/T 7714
Jian-wei Liu,Fa-yin Wang. Gamma-Ray Bursts and Other Observations: Constraints on Cosmographic Parameters and Dark Energy Models[J]. Chinese Astronomy and Astrophysics,2012,36(2):155-168.
APA Jian-wei Liu,&Fa-yin Wang.(2012).Gamma-Ray Bursts and Other Observations: Constraints on Cosmographic Parameters and Dark Energy Models.Chinese Astronomy and Astrophysics,36(2),155-168.
MLA Jian-wei Liu,et al."Gamma-Ray Bursts and Other Observations: Constraints on Cosmographic Parameters and Dark Energy Models".Chinese Astronomy and Astrophysics 36.2(2012):155-168.
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