期刊
PHYSICAL REVIEW D
卷 95, 期 8, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.95.083522
关键词
-
资金
- Advanced Leading Graduate Course for Photon Science at the University of Tokyo
- World Premier International Research Center Initiative (WPI Initiative), MEXT, Japan
- FIRST program Subaru Measurements of Images and Redshifts (SuMIRe), CSTP, Japan
- JSPS Promotion of Science [23340061, 26610058, 15H03654]
- MEXT [15H05893, 15K21733, 15H05892]
- JSPS
- Grants-in-Aid for Scientific Research [26610058, 15H05893, 15H05892, 15K21733, 15H03654] Funding Source: KAKEN
Long-wavelength matter inhomogeneities contain cleaner information on the nature of primordial perturbations as well as the physics of the early Universe. The large-scale coherent overdensity and tidal force, not directly observable for a finite-volume galaxy survey, are both related to the Hessian of large-scale gravitational potential and therefore are of equal importance. We show that the coherent tidal force causes a homogeneous anisotropic distortion of the observed distribution of galaxies in all three directions, perpendicular and parallel to the line-of-sight direction. This effect mimics the redshift-space distortion signal of galaxy peculiar velocities, as well as a distortion by the Alcock-Paczynski effect. We quantify its impact on the redshift-space power spectrum to the leading order, and discuss its importance for ongoing and upcoming galaxy surveys.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据