The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: tomographic BAO analysis of DR12 combined sample in Fourier space

Gong-Bo Zhao, Yuting Wang, Shun Saito, Dandan Wang, Ashley J. Ross, Florian Beutler, Jan Niklas Grieb, Chia-Hsun Chuang, Francisco-Shu Kitaura, Sergio Rodriguez-Torres, Will J. Percival, Joel R. Brownstein, Antonio J. Cuesta, Daniel J. Eisenstein, Héctor Gil-Marín, Jean-Paul Kneib, Robert C. Nichol, Matthew D. Olmstead, Francisco Prada, Graziano RossiSalvador Salazar-Albornoz, Lado Samushia, Ariel G. Sánchez, Daniel Thomas, Jeremy L. Tinker, Rita Tojeiro, David H. Weinberg, Fangzhou Zhu

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Abstract

We perform a tomographic baryon acoustic oscillations (BAO) analysis using the monopole, quadrupole and hexadecapole of the redshift-space galaxy power spectrum measured from the pre-reconstructed combined galaxy sample of the completed Sloan Digital Sky Survey Baryon Oscillation Spectroscopic Survey (BOSS) Data Release12 covering the redshift range of 0.20 < z < 0.75. By allowing for overlap between neighbouring redshift slices, we successfully obtained the isotropic and anisotropic BAO distance measurements within nine redshift slices to a precision of 1.5–3.4 per cent for DV/rd, 1.8–4.2 per cent for DA/rd and 3.7–7.5 per cent for H rd, depending on effective redshifts. We provide our BAO measurement of DA/rd and H rd with the full covariance matrix, which can be used for cosmological implications. Our measurements are consistent with those presented in Alam et al., in which the BAO distances are measured at three effective redshifts. We constrain dark energy parameters using our measurements and find an improvement of the Figure-of-Merit of dark energy in general due to the temporal BAO information resolved. This paper is a part of a set that analyses the final galaxy clustering data set from BOSS.
Original languageEnglish
Pages (from-to)762-779
JournalMonthly Notices of the Royal Astronomical Society
Volume466
Issue number1
Early online date11 Dec 2016
DOIs
Publication statusPublished - Apr 2017

Keywords

  • Galaxies: distances and redshifts
  • Cosmological parameters
  • Cosmology: observations
  • Dark energy
  • Distance scale
  • Large-scale structure of Universe

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  • Zhao_2017_Clustering_SDSS-III_MRNAS_AAM

    © 2017, the Author(s). This work has been made available online in accordance with the publisher’s policies. This is the author created, accepted version manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at academic.oup.com / https://doi.org/10.1093/mnras/stw3199

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    • Sloan Digital Sky Survey Data Release 12

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      http://www.sdss.org/dr12/

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