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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

2016; Oxford University Press; Volume: 466; Issue: 1 Linguagem: Inglês

10.1093/mnras/stw3199

1365-2966

Gong‐Bo Zhao, Yuting Wang, Shun Saito, Dandan Wang, Ashley J. Ross, Florian Beutler, Jan Niklas Grieb, Chia-Hsun Chuang, Francisco-Shu Kitaura, Sergio Rodríguez-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, Salvador Salazar-Albornoz, Lado Samushia, Ariel G. Sánchez, D. Thomas, Jeremy L. Tinker, Rita Tojeiro, David H. Weinberg, Fangzhou Zhu,

Radio Astronomy Observations and Technology

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 (SDSS-III) Baryon Oscillation Spectroscopic Survey (BOSS) Data Release (DR)12 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 $1.5\%-3.4\%$ for $D_V/r_d$, $1.8\% -4.2\%$ for $D_A/r_d$ and $3.7\% - 7.5\%$ for $H \ r_d$, depending on effective redshifts. We provide our BAO measurement of $D_A/r_d$ and $H \ r_d$ with the full covariance matrix, which can be used for cosmological implications. Our measurements are consistent with those presented in \citet{Acacia}, 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 part of a set that analyses the final galaxy clustering dataset from BOSS.