论文标题
使用时间延迟镜头的模型选择
Model selection using time-delay lenses
论文作者
论文摘要
适合研究宇宙几何形状的时间延迟重力镜头的样本继续随着专门的运动而继续增长，例如黑暗能源调查，VST ATLAS调查和大型的概要调查望远镜，完成了他们的高红移来源的人口普查。该目录现在包括数百个强镜系统，其中至少31个具有相当准确的时间延迟测量值。在本文中，我们使用它们比较了两个竞争的Friedmann-Lemaitre-Robertson-Walker模型的预测：Flat LCDM，其特征在于两个可调参数（H_0和Omega_M），R_H = CT Universe（以H_0为单个免费变量）。在过去的十年中，后者比标准模型更好地解释了数据，最近，JWST在Cosmic Dawn发现了良好的星系的出现。在这里，我们表明，当前的时间延迟镜头样本偏爱r_h = CT，标准模型的可能性约为84％，而〜16％的可能性为〜16％。随着未来几年内正在进行的数千种额外的镜头系统的调查，这种准确性将大大提高。
The sample of time-delay gravitational lenses appropriate for studying the geometry of the Universe continues to grow as dedicated campaigns, such as the Dark Energy Survey, the VST ATLAS survey, and the Large Synoptic Survey Telescope, complete their census of high-redshift sources. This catalog now includes hundreds of strong lensing systems, at least 31 of which have reasonably accurate time delay measurements. In this paper, we use them to compare the predictions of two competing Friedmann-Lemaitre-Robertson-Walker models: flat LCDM, characterized by two adjustable parameters (H_0 and Omega_m), and the R_h=ct universe (with H_0 as the single free variable). Over the past decade, the latter has accounted for the data better than the standard model, most recently the emergence of well-formed galaxies discovered by JWST at cosmic dawn. Here we show that the current sample of time-delay lenses favours R_h=ct with a likelihood of ~84% versus ~16% for the standard model. This level of accuracy will greatly improve as the ongoing surveys uncover many thousands additional lens systems over the next several years.
