THE DISTANCE DUALITY RELATION FROM STRONG GRAVITATIONAL LENSING
THE DISTANCE DUALITY RELATION FROM STRONG GRAVITATIONAL LENSING
复制标题
具有强透镜时间延迟的 FLRW 公制和曲率测试
DOI：
10.3847/0004-637x/822/2/74
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发表时间：
2016
影响因子：
4.9
通讯作者：
Zhu Zong-Hong
中科院分区：
文献类型：
--
作者：
Liao Kai;Li Zhengxiang;Cao Shuo;Biesiada Marek;Zheng Xiaogang;Zhu Zong-Hong
在时空度规理论的非常一般的假设下，光子沿沿着零测地线传播和光子数守恒，宇宙距离的两个可观测概念，即，角直径和光度距离通过所谓的距离对偶关系（DDR）彼此相关。对这个关系的观测验证是非常重要的，因为任何违反它的证据都可能是新物理学的信号。本文介绍了一种新的方法来测试DDR的强引力透镜系统和Ia型超新星（SNe Ia）在一个平坦的宇宙。该方法本身是值得注意的，因为与以前提出的技术，它不依赖于所有其他有关宇宙学模型的细节先验假设。我们使用强透镜（SL）系统的新编译和SNe Ia的JLA编译对其进行了测试，没有发现DDR违规的证据。为了完整起见，我们还将它与以前的集群数据结合起来，展示了它在约束DDR方面的强大功能。它可能成为一个有前途的新探测器在未来的大规模SL调查，因为预期的进展，星系团建模。
Under very general assumptions of the metric theory of spacetime, photons traveling along null geodesics and photon number conservation, two observable concepts of cosmic distance, i.e., the angular diameter and the luminosity distances are related to each other by the so-called distance duality relation (DDR) . Observational validation of this relation is quite important because any evidence of its violation could be a signal of new physics. In this paper we introduce a new method to test the DDR based on strong gravitational lensing systems and type Ia supernovae (SNe Ia) under a flat universe. The method itself is worth attention because unlike previously proposed techniques, it does not depend on all other prior assumptions concerning the details of cosmological model. We tested it using a new compilation of strong lensing (SL) systems and JLA compilation of SNe Ia and found no evidence of DDR violation. For completeness, we also combined it with previous cluster data and showed its power on constraining the DDR. It could become a promising new probe in the future in light of forthcoming massive SL surveys and because of expected advances in galaxy cluster modeling.