Fitting methods for baryon acoustic oscillations in the Lyman-α forest fluctuations in BOSS data release 9
Creators
- Kirkby, David1
- Margala, Daniel1
- Blomqvist, Michael1
- Slosar, Anže2
- Bailey, Stephen3
- Carithers, Bill3
- Busca, Nicolás G.4
- Bautista, Julian E.4
- Delubac, Timothée5
- Rich, James5
- Palanque-Delabrouille, Nathalie5
- Brownstein, Joel R.6
- Dawson, Kyle S.6
- Croft, Rupert A.C.7
- Font-Ribera, Andreu8
- Miralda-Escudé, Jordi9
- Myers, Adam D.10
- Nichol, Robert C.11
- Pâris, Isabelle12
- Petitjean, Patrick12
- and others
- 1. Department of Physics and Astronomy, University of California, Irvine, 92697 (United States)
- 2. Brookhaven National Laboratory, Blgd 510, Upton NY 11375 (United States)
- 3. Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720 (United States)
- 4. APC, Université Paris Diderot-Paris 7, CNRS/IN2P3, CEA, Observatoire de Paris, 10, rue A. Domon and L. Duquet, Paris (France)
- 5. CEA, Centre de Saclay, IRFU, F-91191 Gif-sur-Yvette (France)
- 6. Department of Physics and Astronomy, University of Utah, 115 S 1400 E, Salt Lake City, UT 84112 (United States)
- 7. Bruce and Astrid McWilliams Center for Cosmology, Carnegie Mellon University, Pittsburgh, PA 15213 (United States)
- 8. Institute of Theoretical Physics, University of Zurich, 8057 Zurich (Switzerland)
- 9. Institució Catalana de Recerca i Estudis Avançats, Barcelona, Catalonia (Spain)
- 10. Department of Physics and Astronomy, University of Wyoming, Laramie, WY 82071 (United States)
- 11. Institute of Cosmology and Gravitation, Dennis Sciama Building, University of Portsmouth, Portsmouth, PO1 3FX (United Kingdom)
- 12. Université Paris 6 et CNRS, Institut d'Astrophysique de Paris, 98bis blvd. Arago, 75014 Paris (France)
Description
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
Availability note (English)
Available from http://dx.doi.org/10.1088/1475-7516/2013/03/024Additional details
Identifiers
Publishing Information
- Journal Title
- Journal of Cosmology and Astroparticle Physics
- Journal Volume
- 2013
- Journal Issue
- 03
- Journal Page Range
- p. 024
- ISSN
- 1475-7516
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 45104322
- Subject category
- S79: ASTROPHYSICS, COSMOLOGY AND ASTRONOMY;
- Descriptors DEI
- ANISOTROPY; BARYONS; COMPUTER CODES; CORRELATION FUNCTIONS; COSMOLOGY; FLUCTUATIONS; LYMAN LINES; NONLINEAR PROBLEMS; OSCILLATIONS; RED SHIFT; SPACE; THREE-DIMENSIONAL CALCULATIONS
- Descriptors DEC
- ELEMENTARY PARTICLES; FERMIONS; FUNCTIONS; HADRONS; VARIATIONS