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

David Kirkby, Daniel Margala, Slosar Anže Slosar, Stephen Bailey, Nicolás G. Busca, Timothée 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-Escudé, Adam D. Myers, Robert C. Nichol, Nathalie Palanque-Delabrouille, Isabelle Pâris, Patrick PetitjeanGraziano Rossi, David J. Schlegel, Donald P. Schneider, Matteo Viel, David H. Weinberg, Christophe Yèche

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36 Scopus citations

Abstract

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 (US)
Article number024
JournalJournal of Cosmology and Astroparticle Physics
Volume2013
Issue number3
DOIs
StatePublished - Mar 2013

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics

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