The one-dimensional Lyα forest power spectrum from BOSS

By N. Palanque-Delabrouille, C. Yéche, A. Borde, J. Goff, G. Rossi, M. Viel, 'Eric Aubourg, S. Bailey, Julián Bautista, M. Blomqvist and 26 more. 2013

172 citations recorded by the source corpus.

We have developed two independent methods for measuring the one-dimensional power spectrum of the transmitted flux in the Lyman-α forest. The first method is based on a Fourier transform and the second on a maximum-likelihood estimator. The two methods are independent and have different systematic uncertainties. Determination of the noise level in the data spectra was subject to a new treatment, because of its significant impact on the derived power spectrum. We applied the two methods to 13 821 quasar spectra from SDSS-III/BOSS DR9 selected from a larger sample of over 60 000 spectra on the basis of their high quality, high signal-to-noise ratio (S/N), and good spectral resolution. The power spectra measured using either approach are in good agreement over all twelve redshift bins from ⟨z⟩ = 2.2 to ⟨z⟩ = 4.4, and scales from 0.001 km s-1 to 0.02 km s-1. We determined the methodological andinstrumental systematic uncertainties of our measurements. We provide a preliminary cosmological interpretation of our measurements using available hydrodynamical simulations. The improvement in precision over previously published results from SDSS is a factor 2–3 for constraints on relevant cosmological parameters. For a ΛCDM model and using a constraint on H0 that encompasses measurements based on the local distance ladder and on CMB anisotropies, we infer σ8 = 0.83 ± 0.03 and ns = 0.97 ± 0.02 based on H i absorption in the range 2.1 < z < 3.7.

Subfields: Astronomy and Astrophysics

View Paper: https://www.semanticscholar.org/paper/479bbc51c54725a20166dd0400711e8719eb36a5

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Citations in the corpus

Completed SDSS-IV extended Baryon Oscillation Spectroscopic Survey: Cosmological implications from two decades of spectroscopic surveys at the Apache Point Observatory (2020, methodology): “These data have been used to place constraints on neutrino masses and inflation parameters through measurements of the one-dimensional flux power spectrum of the Lyα forest (Palanque-Delabrouille et al. 2013; Chabanier et al. 2019).”
The Evolution of the Intergalactic Medium (2015, methodology): “4.5 that, when tuning the IGM T −∆b relation and cosmological parameters within allowed bounds, the standard simulations yield good χ2 values even when the estimate uses 3000 (McDonald et al. 2005b) and, recently, 14, 000 Sloan spectra (Palanque-Delabrouille et al. 2013, 2015).”
Constraining the mass of light bosonic dark matter using SDSS Lyman-α forest (2017, methodology): “It has been shown (eg. in Palanque-Delabrouille et al. (2013) that this SDSS Lyman-α forest matches well predictions based on the CDM model, by appropriately choosing relevant astrophysical and instrumental parameters such as the IGM thermal state modeling or the spectrometer resolution.”
Neutrinoless Double Beta Decay: 2015 Review (2016, methodology): “The tight limit on Σ in [136] was obtained by combining Planck 2013 results [140] with the one-dimensional flux power spectrum measurement of the Lyman-α forest extracted from the BAO Spectroscopic Survey of the SloanDigital Sky Survey [212].”
Constraints on neutrino masses from Lyman-alpha forest power spectrum with BOSS and XQ-100 (2017, methodology): “As our large-scale structure probe, we use the 1D Lyα-flux power spectrum measurement from the first release of BOSS quasar data [1].”
THE SDSS-IV EXTENDED BARYON OSCILLATION SPECTROSCOPIC SURVEY: OVERVIEW AND EARLY DATA (2015, methodology): “After correcting for targeting efficiency and selecting confirmed quasars at 0.9 < z < 2.2 and g < 22, the expected surface density of the quasar population is 82.6 deg−2 (Palanque-Delabrouille et al. 2013a).”
THE SDSS-IV EXTENDED BARYON OSCILLATION SPECTROSCOPIC SURVEY: QUASAR TARGET SELECTION (2015, background): “…substantial new insights into cosmological constraints (e.g. Slosar et al. 2011, 2013; Noterdaeme et al. 2012; Busca et al. 2013; Kirkby et al. 2013; Palanque-Delabrouille et al. 2013b; Font-Ribera et al. 2014; Delubac et al. 2015). eBOSS will therefore also (heterogeneously) observe over ∼ 60,000…”
Neutrino Mass Ordering from Oscillations and Beyond: 2018 Status and Future Prospects (2018, methodology): “By means of the one-dimensional Lyman-α forest power spectrum extracted by Palanque-Delabrouille et al. (2013) and combining these measurements with Planck TT,TE,EE + lowP + BAO, the authors of Palanque-Delabrouille et al. (2015) find a 95% CL upper limit of ∑ mν < 0.12 eV.”
New Constraints on the free-streaming of warm dark matter from intermediate and small scale Lyman-$\alpha$ forest data (2017, methodology): “At present, constraints on the matter power spectrum are either derived from moderate size samples with tens of high-resolution, high signal-to-noise spectra (VLT, HIRES/KECK, [7, 9, 12]) or large samples with thousands of low-resolution, low signal-to-noise spectra (SDSS-II, SDSS-III/BOSS, [13, 18,”
Cosmology from cosmic shear power spectra with Subaru Hyper Suprime-Cam first-year data (2018, background): “…galaxies (e.g., Cole et al. 2005; Yamamoto et al. 2006; Percival et al. 2010; Reid et al. 2010; Blake et al. 2011; Oka et al. 2014; Alam et al. 2017; Beutler et al. 2017), and the Lyman-α forest (e.g., McDonald et al. 2006; Palanque-Delabrouille et al. 2013; Viel et al. 2013; Iršič et al. 2017).”