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          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents

ID: 709877.0, MPI für Astronomie / Publikationen_mpia
Quasar-Lyman alpha forest cross-correlation from BOSS DR11: Baryon Acoustic Oscillations
Authors:Font-Ribera, A.; Kirkby, D.; Busca, N.; Miralda-Escudé, J.; Ross, N. P.; Slosar, A.; Rich, J.; Aubourg, É.; Bailey, S.; Bhardwaj, V.; Bautista, J.; Beutler, F.; Bizyaev, D.; Blomqvist, M.; Brewington, H.; Brinkmann, J.; Brownstein, J. R.; Carithers, B.; Dawson, K. S.; Delubac, T.; Ebelke, G.; Eisenstein, D. J.; Ge, J.; Kinemuchi, K.; Lee, K.-G.; Malanushenko, V.; Malanushenko, E.; Marchante, M.; Margala, D.; Muna, D.; Myers, A. D.; Noterdaeme, P.; Oravetz, D.; Palanque-Delabrouille, N.; Pâris, I.; Petitjean, P.; Pieri, M. M.; Rossi, G.; Schneider, D. P.; Simmons, A.; Viel, M.; Yeche, C.; York, D. G.
Date of Publication (YYYY-MM-DD):2014-01
Title of Journal:Journal of Cosmology and Astro-Particle Physics
Issue / Number:05
Start Page:id. 027 (23 pp)
Audience:Not Specified
Abstract / Description:We measure the large-scale cross-correlation of quasars with the Lyalpha forest absorption, using over 164,000 quasars from Data Release 11 of the SDSS-III Baryon Oscillation Spectroscopic Survey. We extend the previous study of roughly 60,000 quasars from Data Release 9 to larger separations, allowing a measurement of the Baryonic Acoustic Oscillation (BAO) scale along the line of sight c/(H(z = 2.36)rs) = 9.0±0.3 and across the line of sight DA(z = 2.36)/rs = 10.8±0.4, consistent with CMB and other BAO data. Using the best fit value of the sound horizon from Planck data (rs = 147.49 Mpc), we can translate these results to a measurement of the Hubble parameter of H(z = 2.36) = 226±8 km s-1 Mpc-1 and of the angular diameter distance of DA(z = 2.36) = 1590±60 Mpc. The measured cross-correlation function and an update of the code to fit the BAO scale (baofit) are made publicly available.
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Astronomie
Identifiers:ISSN:1475-7516 %R 10.1088/1475-7516/2014/05/027
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