Geometric Outlines of the Gravitational Lensing and Its Astronomic Applications
Geometric Outlines of the Gravitational Lensing and Its Astronomic Applications
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DOI：
10.3390/universe9030153
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发表时间：
2023-03
期刊：
影响因子：
2.9
通讯作者：
Bin Shen;Mingyang Yu
中科院分区：
文献类型：
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作者：
Bin Shen;Mingyang Yu
引力透镜是天文学领域中一个具有重要应用价值的课题。引力透镜的性质和研究方法与背景宇宙的几何和相对论特性密切相关。本文就强透镜和弱透镜的理论研究和应用作一综述。我们首先介绍了引力透镜的基本原理，重点介绍了几何透镜的几何基础、偏转角的表示以及不同几何空间中的曲率关系。此外，我们还总结了引力透镜的广泛应用，包括强引力透镜在Schwarzschild黑洞中的应用，时间延迟，基于弱透镜的宇宙剪切，在信号提取、暗物质和暗能量方面的应用。在天文学中，通过使用先进的天文仪器和计算机，分析引力透镜效应以了解宇宙中星系的结构是目前的一个重要课题。可以预见，引力透镜将继续在宇宙学研究中发挥重要作用，并将丰富我们对宇宙的理解。
Gravitational lensing is a topic of great application value in the field of astronomy. The properties and research methods of gravitational lensing are closely related to the geometric and relativistic characteristics of the background universe. This review focuses on the theoretical research and application of strong lenses and weak lenses. We first introduce the basic principles of gravitational lensing, focusing on the geometric basis of geometric lensing, the representation of deflection angles, and the curvature relationship in different geometric spaces. In addition, we summarize the wide range of applications of gravitational lensing, including the application of strong gravitational lensing in Schwarzschild black holes, time delay, the cosmic shearing based on weak lensing, the applications in signal extraction, dark matter, and dark energy. In astronomy, through the use of advanced astronomical instruments and computers, analyzing gravitational lensing effects to understand the structure of galaxies in the universe is an important topic at present. It is foreseeable that gravitational lensing will continue to play an important role in the study of cosmology and will enrich our understanding of the universe.