http://arxiv.org/abs/2212.14291
We use a cosmology-independent method to calibrate gamma-ray burst (GRB) from the observational Hubble data (OHD) which obtained with the cosmic chronometers method. By using Gaussian Process to reconstruct OHD, we calibrate the Amati relation ($E_{\rm p}$–$E_{\rm iso}$) to construct a GRB Hubble diagram with the A118 data set, and constrain Dark Energy models in a flat space with the Markov Chain Monte Carlo numerical method. With the cosmology-independent GRBs at $1.4<z\leq8.2$ in the A118 data set and the Pantheon sample of type Ia supernovae (SNe Ia) at $0.01<z\leq2.3$, we obtained $\Omega_{\rm m}$ = $0.398^{+0.028}{-0.021}$, $h$ = $0.702^{+0.0035}{-0.0035}$, $w$ = $-1.33^{+0.14}{-0.12}$, $w_a$ = $-0.97^{+0.57}{-0.57}$ for the flat CPL model at the 1$\sigma$ confidence level. We find that the $\Lambda$CDM model is favoured respect to the $w$CDM model and the CPL model with the selection criteria.
Z. Li, B. Zhang and N. Liang
Mon, 2 Jan 23
39/44
Comments: 7 pages, 8 figures, 3 Tables. arXiv admin note: text overlap with arXiv:2211.02473
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