Distance-redshift and growth-redshift relations as two windows on acceleration and gravitation: Dark energy or new gravity?

被引：119

作者：

Knox, Lloyd

Song, Yong-Seon

Tyson, J. Anthony

机构：

[1] Univ Calif Davis, Dept Phys, Davis, CA 95616 USA

[2] Univ Chicago, Dept Astron & Astrophys, Chicago, IL 60637 USA

来源：

PHYSICAL REVIEW D | 2006年 / 74卷 / 02期

关键词：

D O I：

10.1103/PhysRevD.74.023512

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Small distortions in the observed shapes of distant galaxies, a cosmic shear due to gravitational lensing, can be used to simultaneously determine the distance-redshift relation, r(z), and the density contrast growth factor, g(z). Both of these functions are sensitive probes of the acceleration. Their simultaneous determination allows for a consistency test and provides sensitivity to physics beyond the standard dark energy paradigm.

引用

页数：5

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