@article{304283dae6b449b88dd5f2fcc020b1b8, title = "Detection of the baryon acoustic peak in the large-scale correlation function of SDSS luminous red galaxies", abstract = "We present the large-scale correlation function measured from a spectroscopic sample of 46,748 luminous red galaxies from the Sloan Digital Sky Survey. The survey region covers 0.72 h(-3) Gpc(3) over 3816 deg(2) and 0.16 < z < 0.47, making it the best sample yet for the study of large-scale structure. We find a well-detected peak in the correlation function at 100 h(-1) Mpc separation that is an excellent match to the predicted shape and location of the imprint of the recombination-epoch acoustic oscillations on the low-redshift clustering of matter. This detection demonstrates the linear growth of structure by gravitational instability between z approximate to 1000 and the present and confirms a firm prediction of the standard cosmological theory. The acoustic peak provides a standard ruler by which we can measure the ratio of the distances to z = 0.35 and z = 1089 to 4% fractional accuracy and the absolute distance to z 0: 35 to 5% accuracy. From the overall shape of the correlation function, we measure the matter density Omega(m)h(2) to 8% and find agreement with the value from cosmic microwave background (CMB) anisotropies. Independent of the constraints provided by the CMB acoustic scale, we find Omega(m) = 0.273 +/- 0.025 + 0.123(1 + w(0)) + 0.137 Omega(K). Including the CMB acoustic scale, we find that the spatial curvature is Omega(K) = -0.010 +/- 0.009 if the dark energy is a cosmological constant. More generally, our results provide a measurement of cosmological distance, and hence an argument for dark energy, based on a geometric method with the same simple physics as the microwave background anisotropies. The standard cosmological model convincingly passes these new and robust tests of its fundamental properties.", author = "Eisenstein, {D J} and I Zehavi and Hogg, {D W} and R Scoccimarro and Blanton, {M R} and Nichol, {R C} and R Scranton and Seo, {H J} and M Tegmark and Z Zheng and Anderson, {S F} and J Annis and N Bahcall and J Brinkmann and S Burles and Castander, {F J} and A Connolly and I Csabai and M Doi and M Fukugita and Frieman, {J A} and K Glazebrook and Gunn, {J E} and Hendry, {J S} and G Hennessy and Z Ivezic and S Kent and Knapp, {G R} and H Lin and Loh, {Y S} and Lupton, {R H} and B Margon and McKay, {T A} and A Meiksin and Munn, {J A} and A Pope and Richmond, {M W} and D Schlegel and Schneider, {D P} and K Shimasaku and C Stoughton and Strauss, {M A} and M SubbaRao and Szalay, {A S} and I Szapudi and Tucker, {D L} and B Yanny and York, {D G}", year = "2005", month = nov, day = "10", doi = "10.1086/466512", language = "English", volume = "633", pages = "560--574", journal = "Astrophysical Journal", issn = "0004-637X", publisher = "IOP Publishing Ltd.", number = "2", }