Constraints on Cosmological Models with Gamma-Ray Bursts in Cosmology-Independent Way
Fuente:
arXiv
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2023
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866913733856460800 |
|---|---|
| author | Xie, Hanbei Nong, Xiaodong Wang, Huifeng Zhang, Bin Li, Zihao Liang, Nan |
| author_facet | Xie, Hanbei Nong, Xiaodong Wang, Huifeng Zhang, Bin Li, Zihao Liang, Nan |
| contents | In this paper, we present a cosmology-independent method to constrain cosmological models from the latest 221 gamma-ray bursts (GRBs) sample, including 49 GRBs from Fermi catalog with the Amati relation (the $E_{\rm p}$-${E}_{\rm iso}$ correlation), which are calibrated by using a Gaussian process from the Pantheon+ type Ia supernovae (SNe Ia) sample. With 182 GRBs at $0.8\le z\le8.2$ in the Hubble diagram and the latest observational Hubble data (OHD) by the Markov Chain Monte Carlo (MCMC) method, we obtained $Ω_{\rm m}$ = $0.348^{+0.048}_{-0.066}$ and $h$ = $0.680^{+0.029}_{-0.029}$ for the flat $Λ$CDM model, and $Ω_{\rm m}$ = $0.318^{+0.067}_{-0.059}$, $h$ = $0.704^{+0.055}_{-0.068}$, $w$ = $-1.21^{+0.32}_{-0.67}$ for the flat $w$CDM model. These results are consistent with those in which the coefficients of the Amati relation and the cosmological parameters fitted simultaneously. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2307_16467 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Constraints on Cosmological Models with Gamma-Ray Bursts in Cosmology-Independent Way Xie, Hanbei Nong, Xiaodong Wang, Huifeng Zhang, Bin Li, Zihao Liang, Nan Cosmology and Nongalactic Astrophysics In this paper, we present a cosmology-independent method to constrain cosmological models from the latest 221 gamma-ray bursts (GRBs) sample, including 49 GRBs from Fermi catalog with the Amati relation (the $E_{\rm p}$-${E}_{\rm iso}$ correlation), which are calibrated by using a Gaussian process from the Pantheon+ type Ia supernovae (SNe Ia) sample. With 182 GRBs at $0.8\le z\le8.2$ in the Hubble diagram and the latest observational Hubble data (OHD) by the Markov Chain Monte Carlo (MCMC) method, we obtained $Ω_{\rm m}$ = $0.348^{+0.048}_{-0.066}$ and $h$ = $0.680^{+0.029}_{-0.029}$ for the flat $Λ$CDM model, and $Ω_{\rm m}$ = $0.318^{+0.067}_{-0.059}$, $h$ = $0.704^{+0.055}_{-0.068}$, $w$ = $-1.21^{+0.32}_{-0.67}$ for the flat $w$CDM model. These results are consistent with those in which the coefficients of the Amati relation and the cosmological parameters fitted simultaneously. |
| title | Constraints on Cosmological Models with Gamma-Ray Bursts in Cosmology-Independent Way |
| topic | Cosmology and Nongalactic Astrophysics |
| url | https://arxiv.org/abs/2307.16467 |