The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: theoretical systematics and Baryon Acoustic Oscillations in the galaxy correlation function

Vargas-Magaña, Mariana; Ho, Shirley; Cuesta, Antonio J.; O’Connell, Ross; Ross, Ashley J.; Eisenstein, Daniel J.; Percival, Will J.; Grieb, Jan Niklas; Sánchez, Ariel G.; Tinker, Jeremy L.; Tojeiro, Rita; Beutler, Florian; Chuang, Chia-Hsun; Kitaura, Francisco-Shu; Prada, Francisco; Rodríguez-Torres, Sergio; Rossi, Graziano; Seo, Hee-Jong; Brownstein, Joel R.; Olmstead, Matthew D.; Thomas, Daniel

doi:10.1093/mnras/sty571

Cited by 91 publications

(90 citation statements)

References 82 publications

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“…Many of the BAO analyses to date have used spherically averaged clustering statistics, measuring an effective distance D V ≡ (zd A (z) 2 /H(z)) 1 3 , which is the volume-averaged distance. Some of the most recent BAO extractions by the Sloan Digital Sky Survey III (SDSS-III) [131] Baryon Oscillation Spectroscopic Survey (BOSS) [132] have achieved, by measuring the clustering of 1.2 million galaxies with redshifts 0.2 < z < 0.75, 1.8% precision on the radial BAO distance and 1.1% precision on the transverse distance in the z < 0.75 redshift region [133][134][135]. These results improve former determinations from previous data releases of BOSS and SDSS [136][137][138][139][140] or other galaxy surveys [141][142][143][144][145], see also the recent works of Ref.…”

Section: B Large Scale Structure Of the Universementioning

confidence: 99%

Neutrino Mass Ordering from Oscillations and Beyond: 2018 Status and Future Prospects

Salas

Gariazzo

Mena

et al. 2018

Front. Astron. Space Sci.

194

197

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The ordering of the neutrino masses is a crucial input for a deep understanding of flavor physics, and its determination may provide the key to establish the relationship among the lepton masses and mixings and their analogous properties in the quark sector. The extraction of the neutrino mass ordering is a data-driven field expected to evolve very rapidly in the next decade. In this review, we both analyze the present status and describe the physics of subsequent prospects. Firstly, the different current available tools to measure the neutrino mass ordering are described. Namely, reactor, long-baseline (accelerator and atmospheric) neutrino beams, laboratory searches for beta and neutrinoless double beta decays and observations of the cosmic background radiation and the large scale structure of the universe are carefully reviewed. Secondly, the results from an up-to-date comprehensive global fit are reported: the Bayesian analysis to the 2018 publicly available oscillation and cosmological data sets provides strong evidence for the normal neutrino mass ordering versus the inverted scenario, with a significance of 3.5 standard deviations. This preference for the normal neutrino mass ordering is mostly due to neutrino oscillation measurements. Finally, we shall also emphasize the future perspectives for unveiling the neutrino mass ordering. In this regard, apart from describing the expectations from the aforementioned probes, we also focus on those arising from alternative and novel methods, as 21 cm cosmology, core-collapse supernova neutrinos and the direct detection of relic neutrinos.10 Here, σ 8 corresponds to the normalization of the matter power spectrum on scales of 8h −1 Mpc, see Equation (13). 11 The thermal SZ thermal effect consists on a spectral distortion on CMB photons which arrive along the line of sight of a cluster.

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Section: B Large Scale Structure Of the Universementioning

confidence: 99%

Neutrino Mass Ordering from Oscillations and Beyond: 2018 Status and Future Prospects

Salas

Gariazzo

Mena

et al. 2018

Front. Astron. Space Sci.

194

197

View full text Add to dashboard Cite

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“…We instead use the Quick Particle Mesh (QPM) mocks as described in detail in [44] for error analysis. These mocks are based on ΛCDM N -body simulations, and are generated specifically for the BOSS clustering analysis.…”

Section: The Mocksmentioning

confidence: 99%

Baryon acoustic oscillation methods for generic curvature: application to the SDSS-III Baryon Oscillation Spectroscopic Survey

Heinesen

Wiltshire

2019

J. Cosmol. Astropart. Phys.

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We develop methods for investigating baryon acoustic oscillation (BAO) features in cosmological models with non-trivial (but slowly varying) averaged spatial curvature: models that are not necessarily flat, close to flat, nor with constant spatial curvature. The class of models to which our methods apply include Lemaître-Tolman-Bondi models, modified gravity cosmologies, and inhomogeneous cosmologies with backreaction -in which we do not have a prediction of the shape of the spatial 2-point correlation function, but where we nevertheless expect to see a BAO feature in the present-day galaxy distribution, in form of an excess in the galaxy 2-point correlation function.We apply our methods to the Baryon Oscillation Spectroscopic Survey (BOSS) dataset, investigating both the Lambda Cold Dark Matter (ΛCDM) and timescape cosmological models as case studies. The correlation functions measured in the two fiducial models contain a similarly-pronounced BAO feature. We use the relative tangential and radial BAO scales to measure the anisotropic Alcock-Paczyński distortion parameter, , which is independent of the underlying BAO preferred scale. We find that is consistent with zero in both fiducial cosmologies, indicating that models with a different spatial curvature evolution can account for the relative positions of the tangential and radial BAO scale. We validate our methods using ΛCDM mocks.

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“…In this analysis we use the Quick Particle Mesh (QPM) mock catalogues as described in detail in [34]. The QPM mock catalogues are generated from ΛCDM N -body simulations, and are designed for the BOSS clustering analysis.…”

Section: The Mock Cataloguesmentioning

confidence: 99%

“…1 Introduction constraining alternative cosmological models to that of the fiducial template-metric used to extract them. While the systematic errors related to the AP-distortion of conventional BAO analysis have been quantified by some studies such as [34,41], such analyses usually only examine the cases of a few ΛCDM models which are close in terms of model parameters. In this paper we will test the extent to which this underestimates the error for constraining models which are outside the narrow space of cosmological models assessed for systematics, using a framework already developed to study the 2-point correlation function and the BAO feature in spherically-symmetric template metrics [32].…”

mentioning

confidence: 99%

Quantifying the accuracy of the Alcock-Paczyński scaling of baryon acoustic oscillation measurements

Heinesen

Wiltshire

2020

J. Cosmol. Astropart. Phys.

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We investigate -in a generic setting -the regime of applicability of the Alcock-Paczyński (AP) scaling conventionally applied to test different cosmological models, given a fiducial measurement of the baryon acoustic oscillation (BAO) characteristic scale in the galaxy 2-point correlation function. We quantify the error in conventional AP scaling methods, for which our ignorance about the true cosmology is parameterised in terms of two constant AP scaling parameters. We propose a new, and as it turns out, improved version of the constant AP scaling, also consisting of two scaling parameters.The two constant AP scaling methods are almost indistinguishable when the fiducial model used in data reduction and the "true" underlying cosmology are not differing substantially in terms of metric gradients, but are otherwise expected to differ. Our new methods can be applied to existing analyses through a reinterpretation of the results of the conventional AP scaling. This reinterpretation might be important in model universes where curvature gradients above the scale of galaxies are significant.We test our theoretical findings on ΛCDM mock catalogues. The conventional constant AP scaling methods are surprisingly successful for pairs of large-scale metrics, but eventually break down when toy models allowing for large metric gradients are tested. The new constant AP scaling methods proposed in this paper are efficient for all test models examined. We find systematic errors of ∼1% in the recovery of the BAO scale when the true model is distant from the fiducial, which cannot be attributed to any constant AP approximation. The level of systematic uncertainty is robust to the exact fitting method employed. This indicates that caution must be taken with the error budget when extrapolating the BAO acoustic scale measurements obtained in the standard literature. 4 The Alcock-Paczyński scaling and the BAO feature 13 5 Testing the predicted shift of the BAO feature with mock catalogues 15 5.1 The mock catalogues 15 5.2 The likelihood function and the fitting procedure 16 5.3 Large-scale model cosmologies 18 5.4 Toy models with large metric gradients 24 6 Discussion 29 Appendix A The 2-point correlation function and the Landy-Szalay estimators 31 A.1 The 2-point correlation 31 A.2 The Landy-Szalay estimators 33 Appendix B Conjecture of improved AP scaling 35 Appendix C Bounds on the AP error terms 38 C.1 Bounds on the magnitude of ∆ α 38 C.2 Bounds on the magnitude of ∆ 39 -1 -The distribution of gravitationally-bound matter in space serves as an important probe of large-scale dynamics of the Universe. In the Lambda Cold Dark Matter (ΛCDM) cosmology -or indeed any Friedmann-Lemaître-Robertson-Walker (FLRW) model beginning in a hot big bang -the primordial plasma exhibits sound waves which are imprinted as a characteristic scale in the matter distribution after the decoupling of the baryons from the photons [1, 2]. This characteristic baryon acoustic oscillation (BAO) scale is predicted to be seen as an excess in the autocorrelation o...

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The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: theoretical systematics and Baryon Acoustic Oscillations in the galaxy correlation function

Cited by 91 publications

References 82 publications

Neutrino Mass Ordering from Oscillations and Beyond: 2018 Status and Future Prospects

Neutrino Mass Ordering from Oscillations and Beyond: 2018 Status and Future Prospects

Baryon acoustic oscillation methods for generic curvature: application to the SDSS-III Baryon Oscillation Spectroscopic Survey

Quantifying the accuracy of the Alcock-Paczyński scaling of baryon acoustic oscillation measurements

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