The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: baryon acoustic oscillations in the Fourier space
The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: baryon acoustic oscillations in the Fourier space
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DOI：
10.1093/mnras/stw2373
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发表时间：
2016-07
影响因子：
4.8
通讯作者：
F. Beutler;H. Seo;A. Ross;P. Mcdonald;S. Saito;A. Bolton;J. Brownstein;C. Chuang;A. Cuesta-A.-Cuest
中科院分区：
文献类型：
--
作者：
F. Beutler;H. Seo;A. Ross;P. Mcdonald;S. Saito;A. Bolton;J. Brownstein;C. Chuang;A. Cuesta-A.-Cuest
在这里，我们分析了最终的重子振荡光谱巡天（BOSS）数据发布（DR 12）的重子声振荡（BAO）信号。我们的分析是在傅立叶空间，使用功率谱的四极杆。该数据集包括红移范围为0.2 < z < 0.75的1198006个星系。我们将该数据集分为三个（重叠）红移箱，有效红移zeff = 0.38，0.51和0.61。我们使用N体模拟以及1000个MultiDark-Patchy模拟目录来证明我们的分析管道的可靠性，这些模拟目录模拟了BOSS-DR 12目标选择。我们应用密度场重建，以提高BAO的信噪比。通过引入功率谱四极子，我们可以区分视线模和角模，这使得我们可以分别约束角直径距离DA（z）和哈勃参数H（z）。我们得到了两个独立的1：6%和1：5%的限制DA（z）和2.9%和2.3%的限制H（z）的低（zeff = 0.38）和高（zeff = 0.61）红移箱，分别。在忽略Alcock-Paczynski效应的情况下，我们得到了角平均距离DV（z）的两个独立的1%和0.9%约束。BAO信号的检测显著性对于三个红移仓中的每一个都是8σ（重建后）的量级。我们的结果与CDM中的Planck预言符合得很好。本文是分析BOSS最终星系聚类数据集的一部分。这里提出的测量和可能性与Alam et al.（2016）中的其他测量和可能性相结合，以产生BOSS的最终宇宙学约束。«少
Here, we analyse the Baryon Acoustic Oscillation (BAO) signal of the final Baryon Oscillation Spectroscopic Survey (BOSS) data release (DR12). Our analysis is performed in Fourier-space, using the power spectrum monopole and quadrupole. The dataset includes 1 198 006 galaxies over the redshift range 0.2 < z < 0.75. We divide this dataset into three (overlapping) redshift bins with the effective redshifts zeff = 0.38, 0.51 and 0.61. We demonstrate the reliability of our analysis pipeline using N-body simulations as well as 1000 MultiDark-Patchy mock catalogues, which mimic the BOSS-DR12 target selection. We apply density eld reconstruction to enhance the BAO signal-to-noise ratio. By including the power spectrum quadrupole we can sep-arate the line-of-sight and angular modes, which allows us to constrain the angular diameter distance DA(z) and the Hubble parameter H ( z ) separately. We obtain two independent 1 : 6% and 1 : 5% constraints on DA(z) and 2.9% and 2.3% constraints on H(z) for the low (zeff = 0.38) and high (zeff = 0.61) redshift bin, respectively. We obtain two independent 1% and 0.9% constraints on the angular averaged distance DV(z), when ignoring the Alcock-Paczynski e ect. The detection significance of the BAO signal is ofmore » the order of 8σ (post-reconstruction) for each of the three redshift bins. Our results are in good agreement with the Planck prediction within CDM. This paper is part of a set that analyses the final galaxy clustering dataset from BOSS. The measurements and likelihoods presented here are combined with others in Alam et al. (2016) to produce the final cosmological constraints from BOSS.« less