论文标题
通过使用IA型超新星使用高斯工艺来校准伽马射线爆发
Calibrating Gamma-Ray Bursts by Using a Gaussian Process with Type Ia Supernovae
论文作者
论文摘要
在本文中，我们校准了伽马射线爆发（grbs）的Amati关系（$ e _ {\ rm p} $ - $ {e} _ {\ rm ISO} $相关。 By using Gaussian process to reconstruct the smoothed luminosity distance from the Pantheon type Ia supernovae (SNe Ia) sample, we utilize the reconstructed results to calibrate the $E_{\rm p}$-${E}_{\rm iso}$ correlation with the Markov Chain Monte Carlo method and construct a Hubble diagram with the A220 GRB data, in which A118 GRB数据具有较高的质量，适合宇宙学目的。在A118样品和观察到的Hubble数据中，有98个GRB的$ 1.4 <Z \ leq8.2 $，我们获得了$ω_ {\ rm M} $ = $ 0.346^{+0.048} _ { - 0.069} $，$ 0.069} $，$ h $ = $ 0.677^$ 0.677^$ 0.029} {+0.0029} { $Λ$CDM model, and $Ω_{\rm m}$=$0.314^{+0.072}_{-0.055}$, $h$=$0.705^{+0.055}_{-0.069}$, $w$=$-1.23^{+0.33}_{-0.64}$ for the flat $ W $ CDM模型与拟合Amati关系系数和宇宙学参数的系数相一致。
In this paper, we calibrate the Amati relation (the $E_{\rm p}$-${E}_{\rm iso}$ correlation) of gamma-ray bursts (GRBs) in a cosmology-independent way. By using Gaussian process to reconstruct the smoothed luminosity distance from the Pantheon type Ia supernovae (SNe Ia) sample, we utilize the reconstructed results to calibrate the $E_{\rm p}$-${E}_{\rm iso}$ correlation with the Markov Chain Monte Carlo method and construct a Hubble diagram with the A220 GRB data, in which there are A118 GRB data with the higher qualities appropriate for cosmological purposes. With 98 GRBs at $1.4<z\leq8.2$ in the A118 sample and the observed Hubble data, we obtain $Ω_{\rm m}$=$0.346^{+0.048}_{-0.069}$, $h$=$0.677^{+0.029}_{-0.029}$ for the flat $Λ$CDM model, and $Ω_{\rm m}$=$0.314^{+0.072}_{-0.055}$, $h$=$0.705^{+0.055}_{-0.069}$, $w$=$-1.23^{+0.33}_{-0.64}$ for the flat $w$CDM model, which are consistent with those from fitting the coefficients of the Amati relation and the cosmological parameters simultaneously.
