KiDS-450: the tomographic weak lensing power spectrum and constraints on cosmological parameters

Köhlinger, F.; Viola, Massimo; Joachimi, Benjamin; Hoekstra, Henk; Uitert, Edo van; Hildebrandt, Hendrik; Choi, A.; Erben, T.; Heymans, Catherine; Joudaki, Shahab; Klaes, Dominik; Kuijken, Konrad; Merten, Julian; Miller, L.; Schneider, Peter; Valentijn, E. A.

doi:10.1093/mnras/stx1820

Cited by 218 publications

(298 citation statements)

References 97 publications

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“…[50]). It is also worth noticing that the A lens tension seems somewhat alleviated in the VM scenario and that the value of S 8 is now in even better agreement with the recent cosmic shear results from the Kilo Degree Survey [45]. We, however, remark that there can be difficulties with other observational data sets not considered here such as redshift space distortions and supernova distances.…”

Section: Parametersupporting

confidence: 72%

“…Moreover, the VM model provides a better mean fit over ΛCDM by Δχ Table III). However, note that the weak lensing parameter S 8 ¼ σ 8 ðΩ m /0.3Þ 0.5 actually decreases relative to the ΛCDM case, from 0.852 AE 0.018 to 0.803 AE 0.022, putting it in better agreement with weak lensing results from the Kilo Degree Survey [45] and Dark Energy Survey [46,47]. Also, the reduced high redshift HðzÞ may ameliorate tension in the Lyman alpha-quasar cross-correlations (see [48]).…”

Section: Parametersupporting

confidence: 58%

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Vacuum phase transition solves the H0 tension

2018

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Taking the Planck cosmic microwave background data and the more direct Hubble constant measurement data as unaffected by systematic offsets, the values of the Hubble constant H 0 interpreted within the ΛCDM cosmological constant and cold dark matter cosmological model are in ∼3.3σ tension. We show that the Parker vacuum metamorphosis (VM) model, physically motivated by quantum gravitational effects and with the same number of parameters as ΛCDM, can remove the H 0 tension and can give an improved fit to data (up to a mean Δχ 2 ¼ −7.5). It also ameliorates tensions with weak lensing data and the high redshift Lyman alpha forest data. Considering Bayesian evidence, we found in the case of the Planck data set alone positive evidence for a VM model against a cosmological constant both in the six-and nine-parameter framework. When the R16 data set is also considered, we found a strong evidence for the VM model against a cosmological constant in nine-parameter space. We separately consider a scale-dependent scaling of the gravitational lensing amplitude, such as provided by modified gravity, neutrino mass, or cold dark energy, motivated by the somewhat different cosmological parameter estimates for low and high CMB multipoles. We find that no such scale dependence is preferred.

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Section: Parametersupporting

confidence: 72%

Section: Parametersupporting

confidence: 58%

Vacuum phase transition solves the H0 tension

2018

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“…Extended catalogs of galaxy clusters have been completed from several surveys (see e.g., [24] and references therein). In addition, weak lensing surveys (Canada-FranceHawaii Telescope Lensing Survey [25], Kilo-Degree Survey [26], Dark Energy Survey [27]) are mature enough to provide constraints on cosmological parameters that are competitive with those from other observables. They also allow to test the validity of the standard cosmological paradigm by comparing results obtained from high-redshift observables to those coming from measurements of the low-redshift universe.…”

Section: Introductionmentioning

confidence: 99%

Status of Neutrino Properties and Future Prospects—Cosmological and Astrophysical Constraints

2018

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Cosmological observations are a powerful probe of neutrino properties, and in particular of their mass. In this review, we first discuss the role of neutrinos in shaping the cosmological evolution at both the background and perturbation level, and describe their effects on cosmological observables such as the cosmic microwave background and the distribution of matter at large scale. We then present the state of the art concerning the constraints on neutrino masses from those observables, and also review the prospects for future experiments. We also briefly discuss the prospects for determining the neutrino hierarchy from cosmology, the complementarity with laboratory experiments, and the constraints on neutrino properties beyond their mass.

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“…of Physics & Astronomy, The Johns Hopkins University, 3400 N. Charles St., Baltimore, MD 21218-2686 2 Department of Physics and Astronomy, University of British Columbia, 6224 Agricultural Road, Vancouver, BC V6T 1Z1, Canada tent with the distance ladder, and in mild tension with Planck (Bonvin et al 2017). Tensions also exist between the Planck predictions for the growth of cosmic structure (through the matter density, Ω m , and present-day density fluctuation amplitude, σ 8 ) and measurements using weak gravitational lensing (e.g., Hildebrandt et al 2017;Joudaki et al 2017;Alsing et al 2017;Köhlinger et al 2017).…”

mentioning

confidence: 99%

Elucidating ΛCDM: Impact of Baryon Acoustic Oscillation Measurements on the Hubble Constant Discrepancy

Addison¹,

Watts²,

Bennett³

et al. 2018

ApJ

252

209

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We examine the impact of baryon acoustic oscillation (BAO) scale measurements on the discrepancy between the value of the Hubble constant (H 0 ) inferred from the local distance ladder and from Planck cosmic microwave background (CMB) data. While the BAO data alone cannot constrain H 0 , we show that combining the latest BAO results with WMAP, Atacama Cosmology Telescope (ACT), or South Pole Telescope (SPT) CMB data produces values of H 0 that are 2.4 − 3.1σ lower than the distance ladder, independent of Planck, and that this downward pull was less apparent in some earlier analyses that used only angle-averaged BAO scale constraints rather than full anisotropic information. At the same time, the combination of BAO and CMB data also disfavors the lower values of H 0 preferred by the Planck high-multipole temperature power spectrum. Combining galaxy and Lyman-α forest (Lyα) BAO with a precise estimate of the primordial deuterium abundance produces H 0 = 66.98 ± 1.18 km s −1 Mpc −1 for the flat ΛCDM model. This value is completely independent of CMB anisotropy constraints and is 3.0σ lower than the latest distance ladder constraint, although 2.4σ tension also exists between the galaxy BAO and Lyα BAO. These results show that it is not possible to explain the H 0 disagreement solely with a systematic error specific to the Planck data. The fact that tensions remain even after the removal of any single data set makes this intriguing puzzle all the more challenging to resolve.

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KiDS-450: the tomographic weak lensing power spectrum and constraints on cosmological parameters

Cited by 218 publications

References 97 publications

Vacuum phase transition solves the H0 tension

Vacuum phase transition solves the H0 tension

Status of Neutrino Properties and Future Prospects—Cosmological and Astrophysical Constraints

Elucidating ΛCDM: Impact of Baryon Acoustic Oscillation Measurements on the Hubble Constant Discrepancy

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