Testing the Speed of Light over Cosmological Distances: The Combination of Strongly Lensed and Unlensed Type Ia Supernovae
Testing the Speed of Light over Cosmological Distances: The Combination of Strongly Lensed and Unlensed Type Ia Supernovae
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DOI：
10.3847/1538-4357/aae5f7
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发表时间：
2018-10
期刊：
影响因子：
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通讯作者：
Shuo Cao;Jingzhao Qi;M. Biesiada;Xiaogang Zheng;Tengpeng Xu;Zong-hong Zhu
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文献类型：
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作者：
Shuo Cao;Jingzhao Qi;M. Biesiada;Xiaogang Zheng;Tengpeng Xu;Zong-hong Zhu
探测光速是广义相对论的一个重要测试，但是利用遥远宇宙中的物体来测量c几乎是完全未知的。在本文中，我们提出了一个想法，使用银河系规模的强引力透镜系统的多次测量Ia型超新星作为背景源，以估计光速。这提供了一种原始的方法来测量光速，使用位于不同红移的物体，这些物体在遥远的过去发出它们的光。此外，我们预测，大型综合巡天望远镜（LSST）观测到的强透镜Ia型超新星将对Δc/c产生10−3的鲁棒约束。我们还讨论了未来的调查，如LSST是否可能成功地检测到任何假设的变化C预测的理论中，基本常数具有动力学性质。
Probing the speed of light is an important test of general relativity, but the measurements of c using objects in the distant universe have been almost completely unexplored. In this paper, we propose an idea to use the multiple measurements of galactic-scale strong gravitational lensing systems with Type Ia supernovae acting as background sources to estimate the speed of light. This provides an original method to measure the speed of light using objects located at different redshifts that emitted their light in a distant past. Moreover, we predict that strongly lensed Type Ia supernovae observed by the Large Synoptic Survey Telescope (LSST) would produce robust constraints on Δc/c at the level of 10−3. We also discuss whether future surveys such as LSST may succeed in detecting any hypothetical variation of c predicted by theories in which fundamental constants have a dynamical nature.