论文标题
JWST的IA型超新星样本对宇宙学参数的限制
Constraints on Cosmological Parameters with a Sample of Type Ia Supernovae from JWST
论文作者
论文摘要
我们研究了使用James Webb Space望远镜（JWST）可在限制宇宙学参数上使用的IA型Supernovae（Sne〜ia）型IA Supernovae（sne〜ia）的样本（$ 2 \ Lesssim Z \ Lessim6 $）（VHz）（VHZ）（VHz）（VHz）（vhz）（vhz）（vhz）。在如此高的红移下，宇宙的年龄已经足够年轻，以至于VHZ SNIA样本包括宇宙的第一个Sne〜ia，祖先在宇宙制造的第一代低质量恒星中。我们表明，VHz SNE〜IA可用于消除系统的系统效应，这是由于亮度距离的演化，并具有固有的SNIA标准化的红移。假设可以通过线性或对数公式来描述系统的进化，我们发现可以准确地确定这种依赖性的系数并与宇宙学模型分离。系统的进化大至0.15 mag和0.45 mag到$ z = 5 $，可以分别与线性和对数进化的流行宇宙学模型牢固地分离。 VHz SNE〜IA将奠定基础，以量化SNIA光度距离尺度的系统红移演化。当与SNIA在相对较低的红移时结合使用时，VHz SNE〜IA可以精确地测量宇宙扩展的历史，从$ z \ sim 0 $到时期的时期接近电源。
We investigate the potential of using a sample of very high-redshift ($2\lesssim z \lesssim6$) (VHZ) Type Ia supernovae (SNe~Ia) attainable by the James Webb Space Telescope (JWST) on constraining cosmological parameters. At such high redshifts, the age of the universe is young enough that the VHZ SNIa sample comprises the very first SNe~Ia of the universe, with progenitors among the very first generation of low mass stars that the universe has made. We show that the VHZ SNe~Ia can be used to disentangle systematic effects due to the luminosity distance evolution with redshifts intrinsic to SNIa standardization. Assuming that the systematic evolution can be described by a linear or logarithmic formula, we found that the coefficients of this dependence can be determined accurately and decoupled from cosmological models. Systematic evolution as large as 0.15 mag and 0.45 mag out to $z=5$ can be robustly separated from popular cosmological models for the linear and logarithmic evolution, respectively. The VHZ SNe~Ia will lay the foundation for quantifying the systematic redshift evolution of SNIa luminosity distance scales. When combined with SNIa surveys at comparatively lower redshifts, the VHZ SNe~Ia allow for a precise measurement of the history of the expansion of the universe from $z\sim 0$ to the epoch approaching reionization.
