Fitting methods for baryon acoustic oscillations in the Lyman-α forest fluctuations in BOSS data release 9 - IN2P3 - Institut national de physique nucléaire et de physique des particules Access content directly
Journal Articles Journal of Cosmology and Astroparticle Physics Year : 2013

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

David Kirkby
  • Function : Author
Daniel Margala
  • Function : Author
Anže Slosar
  • Function : Author
Stephen Bailey
  • Function : Author
Timothée Delubac
  • Function : Author
James Rich
  • Function : Author
J.E. Bautista
Michael Blomqvist
  • Function : Author
Joel R. Brownstein
  • Function : Author
Bill Carithers
  • Function : Author
Rupert A. C. Croft
  • Function : Author
Kyle S. Dawson
  • Function : Author
Andreu Font-Ribera
  • Function : Author
Jordi Miralda-Escudé
  • Function : Author
Adam D. Myers
  • Function : Author
Robert C. Nichol
  • Function : Author
Nathalie Palanque-Delabrouille
  • Function : Author
Isabelle Pâris
  • Function : Author
  • PersonId : 973398
Patrick Petitjean
  • Function : Author
Graziano Rossi
  • Function : Author
David J. Schlegel
  • Function : Author
Donald P. Schneider
  • Function : Author
Matteo Viel
  • Function : Author
David H. Weinberg
  • Function : Author
Christophe Yèche
  • Function : Author

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.

Dates and versions

in2p3-00823681 , version 1 (17-05-2013)

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Cite

David Kirkby, Daniel Margala, Anže Slosar, Stephen Bailey, N.G. Busca, et al.. Fitting methods for baryon acoustic oscillations in the Lyman-α forest fluctuations in BOSS data release 9. Journal of Cosmology and Astroparticle Physics, 2013, 03, pp.024. ⟨10.1088/1475-7516/2013/03/024⟩. ⟨in2p3-00823681⟩
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