First test of the consistency relation for the large-scale structure using the anisotropic three-point correlation function of BOSS DR12 galaxies
First test of the consistency relation for the large-scale structure using the anisotropic three-point correlation function of BOSS DR12 galaxies
复制标题
首次利用BOSS DR12星系各向异性三点相关函数检验大尺度结构的一致性关系
DOI：
10.1093/mnras/stad1935
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发表时间：
2023
影响因子：
4.8
通讯作者：
Seo, Hee-Jong
中科院分区：
文献类型：
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作者：
Sugiyama, Naonori S;Yamauchi, Daisuke;Kobayashi, Tsutomu;Fujita, Tomohiro;Arai, Shun;Hirano, Shin’ichi;Saito, Shun;Beutler, Florian;Seo, Hee-Jong
我们提出，第一次，通过联合分析的各向异性的两点和三点相关函数（2PCF和3PCF）的星系的宇宙大尺度结构（LSS）的一致性关系的观测测试。我们用E_s来表征压缩极限下LSS相容关系的破坏，E_s表示二阶密度涨落和速度涨落中位移项系数的比值，E_s = 1是破坏LSS相容关系的充分条件.这项工作的一个新的方面是，我们约束ES通过获得信息的非线性速度场的四极分量的3PCF，而不采取压缩限制。利用重子振荡光谱巡天（BOSS）数据Release 12中的星系星表，我们得到了，表明在统计误差范围内，我们的分析没有违反LSS一致性关系。我们的参数化是足够的一般，我们的约束可以应用到广泛的理论，如多组分流体，修改后的引力理论，及其相关的星系偏置效应。我们的分析打开了一个新的观测窗口，使用星系团的各向异性高阶相关函数来测试基本物理。
We present, for the first time, an observational test of the consistency relation for the large-scale structure (LSS) of the Universe through a joint analysis of the anisotropic two- and three-point correlation functions (2PCF and 3PCF) of galaxies. We parameterize the breakdown of the LSS consistency relation in the squeezed limit byEs, which represents the ratio of the coefficients of the shift terms in the second-order density and velocity fluctuations.Es≠ 1 is a sufficient condition under which the LSS consistency relation is violated. A novel aspect of this work is that we constrainEsby obtaining information about the non-linear velocity field from the quadrupole component of the 3PCF without taking the squeezed limit. Using the galaxy catalogues in the Baryon Oscillation Spectroscopic Survey (BOSS) Data Release 12, we obtain, indicating that there is no violation of the LSS consistency relation in our analysis within the statistical errors. Our parameterization is general enough that our constraint can be applied to a wide range of theories, such as multicomponent fluids, modified gravity theories, and their associated galaxy bias effects. Our analysis opens a new observational window to test the fundamental physics using the anisotropic higher-order correlation functions of galaxy clustering.