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arxiv 1301.3456 v1 pith:YEYNZC3E submitted 2013-01-15 astro-ph.CO

Fitting Methods for Baryon Acoustic Oscillations in the Lyman-{α} Forest Fluctuations in BOSS Data Release 9

David Kirkby , Daniel Margala , An\v{z}e Slosar , Stephen Bailey , Nicol\'as G. Busca , Timoth\'ee Delubac , James Rich , Michael Blomqvist
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Joel R. Brownstein Bill Carithers Rupert A. C. Croft Kyle S. Dawson Andreu Font-Ribera Jordi Miralda-Escud\'e Adam D. Myers Robert C. Nichol Nathalie Palanque-Delabrouille Isabelle P\^aris Patrick Petitjean Graziano Rossi David J. Schlegel Donald P. Schneider Matteo Viel David H. Weinberg Christophe Y\`eche
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We describe fitting methods developed to analyze fluctuations in the Lyman-{\alpha} forest and measure the parameters of baryon acoustic oscillations (BAO). We apply our methods to BOSS Data Release 9. Our method is based on models of the three-dimensional correlation function in physical coordinate space, and includes the effects of redshift-space distortions, anisotropic non-linear broadening, and broadband distortions. We allow for independent scale factors along and perpendicular to the line of sight to minimize the dependence on our assumed fiducial cosmology and to obtain separate measurements of the BAO angular and relative velocity scales. Our fitting software and the input files needed to reproduce our main BOSS Data Release 9 results are publicly available.

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Cited by 4 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Probing the limits of cosmological information from the Lyman-$\alpha$ forest 2-point correlation functions

    astro-ph.CO 2025-09 unverdicted novelty 6.0

    Using idealized synthetic data, knowing the true continuum in Lyα forest auto- and cross-correlations reduces uncertainties on the AP parameter and Ω_m by ~10%, with extension to 240 h^{-1}Mpc scales adding up to ~15%...

  2. DESI 2024 IV: Baryon Acoustic Oscillations from the Lyman Alpha Forest

    astro-ph.CO 2024-04 accept novelty 6.0

    DESI measures BAO from the Lyα forest at z_eff=2.33, reporting H(z) = (239.2 ± 4.8) (147.09 Mpc/rd) km/s/Mpc and DM(z) = (5.84 ± 0.14) (rd/147.09 Mpc) Gpc.

  3. Impact of fiducial cosmology in model-agnostic cosmological inference with the BAO feature

    astro-ph.CO 2026-06 unverdicted novelty 4.0

    The Zel'dovich smearing approximation for model-agnostic BAO inference is extended to include fiducial cosmology distortions and validated on AbacusSummit simulations of DESI- and Euclid-like samples, producing unbias...

  4. The DESI Experiment Part I: Science,Targeting, and Survey Design

    astro-ph.IM 2016-10 unverdicted novelty 4.0

    DESI will target luminous red galaxies to z=1, emission-line galaxies to z=1.7, quasars for tracers and Ly-alpha forest at 2.1<z<3.5, plus a bright galaxy survey, to obtain more than 30 million redshifts for BAO and m...