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

Research output: Contribution to journalArticle

Author(s)

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 Rossi & 8 more Salvador Salazar-Albornoz, Lado Samushia, Ariel G. Sánchez, Daniel Thomas, Jeremy L. Tinker, Rita Tojeiro, David H. Weinberg, Fangzhou Zhu

School/Research organisations

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.
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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

    Research areas

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

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