Why is this work in the frame?
A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.
No Canadian affiliation. An affiliation-only frame — the usual design — would never have seen this work. It is one of the works that make the case for inverting the frame.
Machine scores (provisional)
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
- Teacher spread
- 0.204 · how far apart the two teachers sit on this one work
- Validation status
score_only:v0-immature-baseline· verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it
Abstract
We present a joint cosmological analysis of weak gravitational lensing observations from the Kilo-Degree Survey (KiDS-1000), with redshift-space galaxy clustering observations from the Baryon Oscillation Spectroscopic Survey (BOSS) and galaxy-galaxy lensing observations from the overlap between KiDS-1000, BOSS, and the spectroscopic 2-degree Field Lensing Survey (2dFLenS). This combination of large-scale structure probes breaks the degeneracies between cosmological parameters for individual observables, resulting in a constraint on the structure growth parameter S 8 = σ8 √ Ωm/0.3 = 0.766+0.020 −0.014, which has the same overall precision as that reported by the full-sky cosmic microwave background observations from Planck. The recovered S 8 amplitude is low, however, by 8.3 ± 2.6% relative to Planck. This result builds from a series of KiDS-1000 analyses where we validate our methodology with variable depth mock galaxy surveys, our lensing calibration with image simulations and null-tests, and our optical-to-near-infrared redshift calibration with multi-band mock catalogues and a spectroscopic-photometric clustering analysis. The systematic uncertainties identified by these analyses are folded through as nuisance parameters in our cosmological analysis. Inspecting the offset between the marginalised posterior distributions, we find that the S 8-difference with Planck is driven by a tension in the matter fluctuation amplitude parameter, σ8. We quantify the level of agreement between the cosmic microwave background and our large-scale structure constraints using a series of different metrics, finding differences with a significance ranging between ∼ 3σ, when considering the offset in S 8, and ∼2σ, when considering the full multi-dimensional parameter space.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
The record
- Venue
- Edinburgh Research Explorer (University of Edinburgh)
- Topic
- Galaxies: Formation, Evolution, Phenomena
- Field
- Physics and Astronomy
- Canadian institutions
- —
- Funders
- Lawrence Berkeley National LaboratoryBrookhaven National LaboratoryScience and Technology Facilities CouncilOffice of ScienceAustralian Astronomical Optics-MacquarieMax-Planck-GesellschaftHarvard UniversityNederlandse Organisatie voor Wetenschappelijk OnderzoekCarnegie Mellon UniversityBundesministerium für Bildung und ForschungU.S. Department of EnergyNational Natural Science Foundation of ChinaDeutsche ForschungsgemeinschaftYork UniversityCollege of Engineering, Michigan State UniversityPrinceton UniversityAlfred P. Sloan FoundationUniversity of WashingtonJohns Hopkins UniversityUniversità degli Studi di PadovaOhio State UniversityNew Mexico State UniversityUniversity of PortsmouthYale UniversityVanderbilt UniversityUniversity of ArizonaAlexander von Humboldt-StiftungNational Science FoundationEuropean Commission
- Keywords
- PhysicsPlanckAstrophysicsCosmic microwave backgroundWeak gravitational lensingGalaxyCosmologyGravitational lensRedshiftPhotometric redshiftAstronomy
- Has abstract in OpenAlex
- yes