Abstract
In a series of papers we have recently studied the clustering of Luminous Red Galaxies (LRG’s) in the latest spectroscopic Sloan Digital Sky Survey (SDSS) data release, which has 75,000 LRG’s sampling 1.1 Gpc3/h3 to z = 0. 47. Here we focus on the evidence in detecting a local maxima shape as a circular ring in the 2-point correlation function ξ(σ, π), separated in perpendicular σ and line-of-sight π directions. We find a significant detection of such a peak at r ≃ 110 Mpc/h. The overall shape and location of the peak is consistent with it originating from the recombination-epoch baryon acoustic oscillations (BAO). This agreement provides support for the current understanding of how large scale structure forms in the universe. We study the significance of such feature using large mock galaxy simulations to provide accurate errorbars.
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Acknowledgements
We acknowledge the use of MICE simulations (www.ice.cat/mice) developed at the MareNostrum supercomputer (www.bsc.es) and with support from PIC (www.pic.es), the Spanish Ministerio de Ciencia y Tecnologia (MEC), project AYA2006-06341 with EC-FEDER funding, Consolider-Ingenio CSD2007-00060 and research project 2005SGR00728 from Generalitat de Catalunya. AC acknowledges support from the DURSI department of the Generalitat de Catalunya and the European Social Fund.
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Gaztañaga, E., Cabre, A. (2010). The Anisotropic Redshift Space Galaxy Correlation Function: Detection on the BAO Ring. In: Diego, J., Goicoechea, L., González-Serrano, J., Gorgas, J. (eds) Highlights of Spanish Astrophysics V. Astrophysics and Space Science Proceedings. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-11250-8_9
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DOI: https://doi.org/10.1007/978-3-642-11250-8_9
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