Fitting methods for baryon acoustic oscillations in the Lyman-alpha forest fluctuations in BOSS data release 9

David Kirkby, Daniel Margala, Anze Slosar, Stephen Bailey, Nicolas G. Busca, Timothee Delubac, James Rich, Julian E. Bautista, Michael Blomqvist, Joel R. Brownstein, Bill Carithers, Rupert A. C. Croft, Kyle S. Dawson, Andreu Font-Ribera, Jordi Miralda-Escude, Adam D. Myers, Robert C. Nichol, Nathalie Palanque-Delabrouille, Isabelle Paris, Patrick PetitjeanGraziano Rossi, David J. Schlegel, Donald P. Schneider, Matteo Viel, David H. Weinberg, Christophe Yeche

Research output: Contribution to journalArticlepeer-review


We describe fitting methods developed to analyze fluctuations in the Lyman-α 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.
Original languageEnglish
Article number024
Pages (from-to)024
JournalJournal of Cosmology and Astroparticle Physics
Issue number3
Early online date20 Mar 2013
Publication statusPublished - Mar 2013


  • dark energy experiments
  • Lyman alpha forest
  • cosmological parameters from LSS
  • baryon acoustic oscillations

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