The Improved Amati Correlations from Gaussian Copula | |
Liu, Yang3; Chen, Fuyong3; Liang N(梁楠)1,2; Yuan, Zunli3; Yu, Hongwei3; Wu, Puxun3 | |
刊名 | ASTROPHYSICAL JOURNAL |
2022-05-01 | |
卷号 | 931期号:1 |
ISSN号 | 0004-637X |
DOI | 10.3847/1538-4357/ac66d3 |
产权排序 | 第3完成单位 |
文献子类 | Article |
英文摘要 | In this paper, we present two improved Amati correlations of gamma-ray burst (GRB) data via a powerful statistical tool called copula. After calibrating with the low-redshift GRB data, the improved Amati correlations based on a fiducial ? cold dark matter (?CDM) model with omega(m0) = 0.3 and H (0) = 70 km s(-1) Mpc(-1), and extrapolating the results to the high-redshift GRB data, we obtain the Hubble diagram of GRB data points. Applying these GRB data to constrain the ?CDM model, we find that the improved Amati correlation from copula can give a result well consistent with omega(m0) = 0.3, while the standard Amati and extended Amati correlations do not. This results suggest that when the improved Amati correlation from copula is used in the low-redshift calibration method, the GRB data can be regarded as a viable cosmological explorer. However, the Bayesian information criterion indicates that the standard Amati correlation remains to be favored mildly since it has the least model parameters. Furthermore, once the simultaneous fitting method rather than the low-redshift calibration one is used, there is no apparent evidence that the improved Amati correlation is better than the standard one. Thus, more work needs to be done in the future in order to compare different Amati correlations. |
学科主题 | 天文学 ; 天体物理学 ; 高能天体物理学 ; 星系与宇宙学 |
URL标识 | 查看原文 |
出版地 | TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND |
资助项目 | NSFC[12075084] ; NSFC[11690034] ; NSFC[11805063] ; NSFC[11775077] ; NSFC[12073069] ; Science and Technology Innovation Plan of Hunan province[2017XK2019] ; Guizhou Provincial Science and Technology Foundation |
WOS关键词 | GAMMA-RAY BURSTS ; PROBE WMAP OBSERVATIONS ; E-ISO CORRELATION ; DARK ENERGY ; COSMOLOGICAL PARAMETERS ; PEAK ENERGY ; E-P,E-I-E-ISO CORRELATION ; LUMINOSITY FUNCTION ; HUBBLE CONSTANT ; REDSHIFT |
WOS研究方向 | Astronomy & Astrophysics |
语种 | 英语 |
出版者 | IOP Publishing Ltd |
WOS记录号 | WOS:000799614300001 |
资助机构 | NSFC[12075084, 11690034, 11805063, 11775077, 12073069] ; Science and Technology Innovation Plan of Hunan province[2017XK2019] ; Guizhou Provincial Science and Technology Foundation[QKHJC-ZK[2021] Key 020] |
内容类型 | 期刊论文 |
版本 | 出版稿 |
源URL | [http://ir.ynao.ac.cn/handle/114a53/25202] |
专题 | 云南天文台_其他 |
通讯作者 | Liang N(梁楠) |
作者单位 | 1.Key Laboratory of Information and Computing Science Guizhou Province, Guizhou Normal University, Guiyang, Guizhou 550025, People's Republic of China liangn@ynao.ac.cn; 2.Yunnan Observatory, Chinese Academy of Sciences, Kunming, Yunnan 650011, People's Republic of China 3.Department of Physics and Synergistic Innovation Center for Quantum Effects and Applications, Hunan Normal University, Changsha, Hunan 410081, People's Republic of China; hwyu@hunnu.edu.cn, pxwu@hunnu.edu.cn; |
推荐引用方式 GB/T 7714 | Liu, Yang,Chen, Fuyong,Liang N,et al. The Improved Amati Correlations from Gaussian Copula[J]. ASTROPHYSICAL JOURNAL,2022,931(1). |
APA | Liu, Yang,Chen, Fuyong,Liang N,Yuan, Zunli,Yu, Hongwei,&Wu, Puxun.(2022).The Improved Amati Correlations from Gaussian Copula.ASTROPHYSICAL JOURNAL,931(1). |
MLA | Liu, Yang,et al."The Improved Amati Correlations from Gaussian Copula".ASTROPHYSICAL JOURNAL 931.1(2022). |
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