Institute of Cosmology and Gravitation, University of Portsmouth, Dennis Sciama Building, Portsmouth PO1 3FX, UK.
Philos Trans A Math Phys Eng Sci. 2011 Dec 28;369(1957):5058-67. doi: 10.1098/rsta.2011.0370.
Comparing measurements of redshift-space distortions (RSDs) with geometrical observations of the expansion of the Universe offers tremendous potential for testing general relativity on very large scales. The basic linear theory of RSDs in the distant-observer limit has been known for 25 years and the effect has been conclusively observed in numerous galaxy surveys. The next generation of galaxy survey will observe many millions of galaxies over volumes of many tens of Gpc(3). They will provide RSD measurements of such exquisite precision that we will have to carefully analyse and correct for many systematic deviations from this simple picture in order to fully exploit the statistical precision obtained. We review RSD theory and show how ubiquitous RSDs actually are, and then consider a number of potential systematic effects, shamelessly highlighting recent work in which we have been involved. This review ends by looking ahead to the future surveys that will make the next generation of RSD measurements.
将红移空间扭曲（RSD）的测量与宇宙膨胀的几何观测进行比较，为在非常大的尺度上检验广义相对论提供了巨大的潜力。在遥远观测者极限下的 RSD 基本线性理论已经为人所知 25 年了，并且在许多星系调查中已经得出了明确的观测结果。下一代星系调查将在数十个 Gpc(3)的体积中观测数百万个星系。它们将提供如此精确的 RSD 测量，以至于我们必须仔细分析和纠正许多偏离这一简单图像的系统偏差，以充分利用获得的统计精度。我们回顾了 RSD 理论，并展示了 RSD 实际上是多么普遍，然后考虑了一些潜在的系统效应，毫不掩饰地突出了我们参与的最新工作。本综述最后展望了未来的调查，这些调查将进行下一代 RSD 测量。
