Measurement of BAO correlations at $z=2.3$ with SDSS DR12 \lya-Forests

By Julián Bautista, N. Busca, J. Guy, J. Rich, M. Blomqvist, Hélion Marie du Mas des Bourboux, Matthew M.Pieri, A. Font-Ribera, S. Bailey, T. Delubac and 17 more. 2017

251 citations recorded by the source corpus.

Author(s): Bautista, JE; Busca, NG; Guy, J; Rich, J; Blomqvist, M; Du Mas Des Bourboux, H; Pieri, MM; Font-Ribera, A; Bailey, S; Delubac, T; Kirkby, D; Le Goff, JM; Margala, D; Slosar, A; Vazquez, JA; Brownstein, JR; Dawson, KS; Eisenstein, DJ; Miralda-Escude, J; Noterdaeme, P; Palanque-Delabrouille, N; Pâris, I; Petitjean, P; Ross, NP; Schneider, DP; Weinberg, DH; Yeche, C | Abstract: © ESO 2017. We have used flux-transmission correlations in Lyα forests to measure the imprint of baryon acoustic oscillations (BAO). The study uses spectra of 157 783 quasars in the redshift range 2:1 ≤ z ≤ 3:5 from the Sloan Digital Sky Survey (SDSS) data release 12 (DR12). Besides the statistical improvements on our previous studies using SDSS DR9 and DR11, we have implemented numerous improvements in the analysis procedure, allowing us to construct a physical model of the correlation function and to investigate potential systematic errors in the determination of the BAO peak position. The Hubble distance, DH = c=H(z), relative to the sound horizon is DH(z = 2:33)=rd = 9:07 ± 0:31. The best-determined combination of comoving angular-diameter distance, DM, and the Hubble distance is found to be D0:7 H D0:3 M =rd = 13:94±0:35. This value is 1:028±0:026 times the prediction of the flat-ΛCDM model consistent with the cosmic microwave background (CMB) anisotropy spectrum. The errors include marginalization over the effects of unidentified high-density absorption systems and fluctuations in ultraviolet ionizing radiation. Independently of the CMB measurements, the combination of our results and other BAO observations determine the open-ΛCDM density parameters to be ΩM = 0:296 ± 0:029, ΩΛ = 0:699 ± 0:100 and Ωk = -0:002 ± 0:119.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/ac9986e6aed4aa7d9e5962c29b425e9a6bf08d00

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Citations in the corpus

The SDSS-IV Extended Baryon Oscillation Spectroscopic Survey: Baryon Acoustic Oscillations at Redshift of 0.72 with the DR14 Luminous Red Galaxy Sample (2017, methodology): “Results from the final sample of BOSS galaxies are presented in Alam et al. (2017), while results using the final sample of BOSS Lyα forests are presented in Bautista et al. (2017) and du Mas des Bourboux et al. (2017).”
Baryon acoustic oscillations from the complete SDSS-III Ly$\alpha$-quasar cross-correlation function at $z=2.4$ (2017, methodology): “In the Lyα auto-correlation measurement of Bautista et al. (2017), possible systematic uncertainties in the correlation function related to correlated flux-calibration errors were studied in detail.”
Elucidating ΛCDM: Impact of Baryon Acoustic Oscillation Measurements on the Hubble Constant Discrepancy (2017, methodology): “This tension was reduced slightly in the DR12 Lyα BAO analysis (Bautista et al. 2017).”
The Sloan Digital Sky Survey Quasar Catalog: Fourteenth data release (2017, background): “…unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. function of the Lyman-α forest (e.g. Bautista et al. 2017) and the cross-correlation of quasars and the Lyman-α forest (e.g. du Mas des Bourboux et al. 2017) have provided unprecedented…”
Baryon acoustic oscillations at z = 2.34 from the correlations of Lyα absorption in eBOSS DR14 (2019, methodology): “(29) The accuracy of this method of accounting for the distortion of the correlation function was tested with mock data sets by Bautista et al. (2017).”
The completed SDSS-IV extended Baryon Oscillation Spectroscopic Survey: BAO and RSD measurements from anisotropic clustering analysis of the quasar sample in configuration space between redshift 0.8 and 2.2 (2020, background): “This quasar sample bridges the gap between lower redshift SDSS galaxy measurements (Kazin et al. 2014; Alam et al. 2017) and those from the Lyα-forest (Bautista et al. 2017; du Mas des Bour- boux et al. 2017).”
Baryon acoustic oscillations from the cross-correlation of Lyα absorption and quasars in eBOSS DR14 (2019, methodology): “The studies of mock data sets by Bautista et al. (2017) tried several functional forms and F = sinc(LHCDk‖) was adopted by them and by dMdB17, though other forms gave similar results.”
The Completed SDSS-IV Extended Baryon Oscillation Spectroscopic Survey: Baryon Acoustic Oscillations with Lyα Forests (2020, methodology): “This method was used in multiple analyses of the Lyα autocorrelation in BOSS (Slosar et al. 2011, 2013; Busca et al. 2013; Delubac et al. 2015; Bautista et al. 2017), and it enabled multiple tests of potential systematics and the validation of the BAO analysis pipeline.”
The clustering of the SDSS-IV extended Baryon Oscillation Spectroscopic Survey DR14 quasar sample: First measurement of baryon acoustic oscillations between redshift 0.8 and 2.2 (2017, methodology): “As well as using galaxies as direct tracers of the BAO, analyses of the Lyman-α Forest in quasar spectra with BOSS have provided cosmological measurements at z ∼ 2.3 (e.g. Delubac et al. 2015; Bautista et al. 2017).”
Dark Energy Survey Year 1 results: measurement of the baryon acoustic oscillation scale in the distribution of galaxies to redshift 1 (2017, background): “…Beutler et al. (2011, 6dFGS), Ross et al. (2015a, SDSS MGS), Alam et al. (2016, SDSS-III Baryon Oscillation Spectroscopic Survey (BOSS)), Kazin et al. (2014,WiggleZ), Ata et al. (2017, eBOSS quasars), and the combination of Bautista et al. (2017a) and du Mas des Bourboux et al. (2017, BOSS Lyα).”