论文标题
作为标准探针的类星体计算的多次测量：探索较高红移的宇宙距离双重性关系
Multiple measurements of quasars acing as standard probes: exploring the cosmic distance duality relation at higher redshift
论文作者
论文摘要
假设宇宙距离二元关系（CDDR）在所有尺度和时期都具有有效性，那么一般相对性将重现主要的电流宇宙学观察。然而，在最远的IA型超新星（SN IA）和宇宙微波背景（CMB）之间的红移间隔中，CDDR的测试很差。我们提出了通过高红移类星体的多次测量来测试CDDR有效性的新想法。亮度距离是从类星体的紫外线和X射线亮度之间的关系得出的，而角直径距离是从无线电类星体中的紧凑结构中获得的。这将创造一个宝贵的机会，其中比较了高红移时与同类物体的两个不同的宇宙学距离。基于不同的观察数据，我们的约束比其他当前可用的结果更为严格，并且没有证据表明与CDDR偏离$ z \ sim 3 $。这种基本宇宙学原理的准确独立于模型的测试可以成为精确宇宙学的一个里程碑。
General relativity reproduces main current cosmological observations, assuming the validity of cosmic distance duality relation (CDDR) at all scales and epochs. However, CDDR is poorly tested in the redshift interval between the farthest observed Type Ia supernovae (SN Ia) and that of the Cosmic Microwave background (CMB). We present a new idea of testing the validity of CDDR, through the multiple measurements of high-redshift quasars. Luminosity distances are derived from the relation between the UV and X-ray luminosities of quasars, while angular diameter distances are obtained from the compact structure in radio quasars. This will create a valuable opportunity where two different cosmological distances from the same kind of objects at high redshifts are compared. Our constraints are more stringent than other currently available results based on different observational data and show no evidence for the deviation from CDDR at $z\sim 3$. Such accurate model-independent test of fundamental cosmological principles can become a milestone in precision cosmology.
