Apparent clustering of intermediate-redshift galaxies as a probe of dark energy.
作者信息
Matsubara Takahiko, Szalay Alexander S
机构信息
Department of Physics and Astrophysics, Nagoya University, Chikusa, Nagoya 464-8602, Japan.
出版信息
Phys Rev Lett. 2003 Jan 17;90(2):021302. doi: 10.1103/PhysRevLett.90.021302. Epub 2003 Jan 16.
Abstract
We show that the apparent redshift-space clustering of galaxies in the redshift range of 0.2-0.4 provides surprisingly useful constraints on dark-energy components in the Universe, because of the right balance between the density of objects and the survey depth. We apply Fisher matrix analysis to the luminous red galaxies in the Sloan Digital Sky Survey, as a concrete example. Possible degeneracies in the evolution of the equation of state and the other cosmological parameters are clarified.
摘要
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