Abstract:

The SDSS Photometric Luminous Red Galaxy sample is a complete sample of galaxies from z=0.2 to z=0.6, probing a cosmological volume of 1.5 Gpc3, derived purely from imaging data. I present the first clustering results from this sample, including the detection of clustering on 500 Mpc to 1 Gpc scales and potential evidence of baryonic oscillations in the power spectrum. I will consider the constraints that this measurement places on the current cosmological model, as well as its implications for the role of future imaging surveys, especially in the quest for understanding dark energy.