论文标题
在DESI传统成像调查中查找乘法和二元类星体
Finding Multiply-Lensed and Binary Quasars in the DESI Legacy Imaging Surveys
论文作者
论文摘要
强烈镜头类星体的多个图像之间的时间延迟是测量哈勃常数（H0）的强大工具。为了使用时间延迟以更高的精度和精度实现H0测量，对于扩展镜头类星体样本至关重要。我们在深色能光谱仪（DESI）遗产成像调查中进行了强烈镜头的类星体搜索。 DESI传统调查包括在三个光带（G，R和Z）中观察到的19,000 deg2 deg2，使其非常适合发现新的强烈镜头的类星体。我们将自相关算法应用于约500万个分类为类星体样本中的物体的对象。这些系统在视觉上检查和排名。在这里，我们提出了436个新的多重镜头和二进制类星体候选者，其中65位来自Sloan Digital Sky Sublice Data Release 16。我们为来自Supernova积分磁场的另外18个候选人提供了红移。
The time delay between multiple images of strongly lensed quasars is a powerful tool for measuring the Hubble constant (H0). To achieve H0 measurements with higher precision and accuracy using the time delay, it is crucial to expand the sample of lensed quasars. We conduct a search for strongly lensed quasars in the Dark Energy Spectroscopic Instrument (DESI) Legacy Imaging Surveys. The DESI Legacy Surveys comprise 19,000 deg2 of the extragalactic sky observed in three optical bands (g, r, and z), making it well suited for the discovery of new strongly lensed quasars. We apply an autocorrelation algorithm to ~5 million objects classified as quasars in the DESI Quasar Sample. These systems are visually inspected and ranked. Here, we present 436 new multiply lensed and binary quasar candidates, 65 of which have redshifts from Sloan Digital Sky Survey Data Release 16. We provide redshifts for an additional 18 candidates from the SuperNova Integral Field Spectrograph.
