论文标题
来自改善的Amati相关性的宇宙学模型的伽马射线爆发约束
Gamma ray burst constraints on cosmological models from the improved Amati correlation
论文作者
论文摘要
最近，我们在（APJ 931（2022）50）中构建了改进的AMATI相关性。在本文中，我们进一步研究了对$λ$ CDM和$ W $ CDM型号的限制，分别以标准和改进的AMATI相关性标准化了伽马射线爆发（GRB）。通过使用Pantheon类型的IA超新星样品校准最新的A220 GRB数据集，GRB哈勃图是独立于模型的。我们发现，在高红移区域（$ z> 1.4 $），改进的Amati相关性的GRB距离模量显然比标准Amati One的GRB距离模量明显更大。来自标准AMATI相关性的GRB数据仅对当前物质密度参数$ω_ {\ Mathrm {M0}} $的较低限制，而改进的Amati相关性的GRB限制了$ω_ {\ Mathrm {m0}} $，$ 68 \％$ pruster级别， $ 0.308^{+0.066} _ { - 0.230} $和$ 0.307^{+0.057} _ { - 0.290} $分别在$λ$ CDM和$ W $ CDM型号中，与其他当前流行的观测数据相当一致，这些型号非常一致，包括BAO，包括BAO，CMB和CMB和SO，又是。一旦在我们的分析中添加了$ h（z）$数据后，就可以实现对哈勃常数$ h_0 $的约束。我们发现，两个不同的相关性提供了略有不同的$ H_0 $结果，但是从Planck 2018 CMB观察值中，边缘化的平均值似乎与之接近。
An improved Amati correlation was constructed in (ApJ 931 (2022) 50) by us recently. In this paper, we further study constraints on the $Λ$CDM and $w$CDM models from the gamma ray bursts (GRBs) standardized with the standard and improved Amati correlations, respectively. By using the Pantheon type Ia supernova sample to calibrate the latest A220 GRB data set, the GRB Hubble diagram is obtained model-independently. We find that at the high redshift region ($z>1.4$) the GRB distance modulus from the improved Amati correlation is larger apparently than that from the standard Amati one. The GRB data from the standard Amati correlation only give a lower bound limit on the present matter density parameter $Ω_{\mathrm{m0}}$, while the GRBs from the improved Amati correlation constrain the $Ω_{\mathrm{m0}}$ with the $68\%$ confidence level to be $0.308^{+0.066}_{-0.230}$ and $0.307^{+0.057}_{-0.290}$ in the $Λ$CDM and $w$CDM models, respectively, which are consistent very well with those given by other current popular observational data including BAO, CMB and so on. Once the $H(z)$ data are added in our analysis, the constraint on the Hubble constant $H_0$ can be achieved. We find that two different correlations provide slightly different $H_0$ results but the marginalized mean values seem to be close to that from the Planck 2018 CMB observations.
