The Large-scale Clustering of Luminous Red Galaxies

Details The Large-scale Clustering of Luminous Red Galaxies The Large-scale Clustering of Luminous Red Galaxies

Jun 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...208.6803e&link_type=abstract

American Astronomical Society Meeting 208, #68.03; Bulletin of the American Astronomical Society, Vol. 38, p.147

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Scientific paper

I present galaxy clustering results from the Sloan Digital Sky Survey Luminous Red Galaxy sample. These data probe density perturbations on very large scales, providing strong support of the CDM cosmological paradigm and revealing the signature of acoustic oscillations of the photon-baryon fluid in the first million years of the Universe. The scale of the acoustic feature can be computed and hence the detection in the galaxy clustering serves as a standard ruler, giving a geometric distance to a redshift of 0.35. I will discuss the implications of this measurement for the composition of the universe, including dark energy and spatial curvature. I will close with a discussion of the prospects for future redshift surveys to use the acoustic peak to map the expansion history of the universe.

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