Apparent Clustering of Intermediate-redshift Galaxies as a Probe of Dark Energy

Details Apparent Clustering of Intermediate-redshift Galaxies as a Probe of Dark Energy Apparent Clustering of Intermediate-redshift Galaxies as a Probe of Dark Energy

2002-08-05

arxiv.org/abs/astro-ph/0208087v3

Phys.Rev.Lett. 90 (2003) 021302

Astronomy and Astrophysics

Astrophysics

5 pages, 3 figures, Phys.Rev.Lett., replaced with the accepted version

Scientific paper

10.1103/PhysRevLett.90.021302

We show the apparent redshift-space clustering of galaxies in redshift range of 0.2--0.4 provides surprisingly useful constraints on dark energy component in the universe, because of the right balance between the density of objects and the survey depth. We apply Fisher matrix analysis to the the Luminous Red Galaxies (LRGs) in the Sloan Digital Sky Survey (SDSS), as a concrete example. Possible degeneracies in the evolution of the equation of state (EOS) and the other cosmological parameters are clarified.

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