Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/34428
DC Field | Value | Language |
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dc.contributor.author | Hildebrandt, H. | en_US |
dc.contributor.author | Köhlinger, F. | en_US |
dc.contributor.author | van den Busch, J. L. | en_US |
dc.contributor.author | Joachimi, B. | en_US |
dc.contributor.author | Heymans, C. | en_US |
dc.contributor.author | Kannawadi, A. | en_US |
dc.contributor.author | Wright, A. H. | en_US |
dc.contributor.author | Asgari, M. | en_US |
dc.contributor.author | Blake, C. | en_US |
dc.contributor.author | Hoekstra, H. | en_US |
dc.contributor.author | Joudaki, S. | en_US |
dc.contributor.author | Kuijken, K. | en_US |
dc.contributor.author | Miller, L. | en_US |
dc.contributor.author | Morrison, C. B. | en_US |
dc.contributor.author | Tröster, T. | en_US |
dc.contributor.author | Amon, A. | en_US |
dc.contributor.author | Archidiacono, M. | en_US |
dc.contributor.author | Brieden, S. | en_US |
dc.contributor.author | Choi, A. | en_US |
dc.contributor.author | de Jong, J. T. A. | en_US |
dc.contributor.author | Erben, T. | en_US |
dc.contributor.author | Giblin, B. | en_US |
dc.contributor.author | Mead, A. | en_US |
dc.contributor.author | Peacock, J. A. | en_US |
dc.contributor.author | RADOVICH, MARIO | en_US |
dc.contributor.author | Schneider, P. | en_US |
dc.contributor.author | Sifón, C. | en_US |
dc.contributor.author | Tewes, M. | en_US |
dc.date.accessioned | 2023-10-04T14:45:16Z | - |
dc.date.available | 2023-10-04T14:45:16Z | - |
dc.date.issued | 2020 | en_US |
dc.identifier.issn | 0004-6361 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/34428 | - |
dc.description.abstract | We present a tomographic cosmic shear analysis of the Kilo-Degree Survey (KiDS) combined with the VISTA Kilo-Degree Infrared Galaxy Survey. This is the first time that a full optical to near-infrared data set has been used for a wide-field cosmological weak lensing experiment. This unprecedented data, spanning 450 deg<SUP>2</SUP>, allows us to significantly improve the estimation of photometric redshifts, such that we are able to include robustly higher-redshift sources for the lensing measurement, and - most importantly - to solidify our knowledge of the redshift distributions of the sources. Based on a flat ΛCDM model we find S<SUB>8</SUB> ≡ σ<SUB>8</SUB> Ω<SUB>m</SUB>/0.3 = 0.737<SUP>+0.040</SUP><SUB>-0.036</SUB> in a blind analysis from cosmic shear alone. The tension between KiDS cosmic shear and the Planck-Legacy CMB measurements remains in this systematically more robust analysis, with S<SUB>8</SUB> differing by 2.3σ. This result is insensitive to changes in the priors on nuisance parameters for intrinsic alignment, baryon feedback, and neutrino mass. KiDS shear measurements are calibrated with a new, more realistic set of image simulations and no significant B-modes are detected in the survey, indicating that systematic errors are under control. When calibrating our redshift distributions by assuming the 30-band COSMOS-2015 photometric redshifts are correct (following the Dark Energy Survey and the Hyper Suprime-Cam Survey), we find the tension with Planck is alleviated. The robust determination of source redshift distributions remains one of the most challenging aspects for future cosmic shear surveys | en_US |
dc.language.iso | eng | en_US |
dc.title | KiDS+VIKING-450: Cosmic shear tomography with optical and infrared data | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.1051/0004-6361/201834878 | en_US |
dc.identifier.url | https://www.aanda.org/articles/aa/full_html/2020/01/aa34878-18/aa34878-18.html | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 633 | en_US |
dc.relation.firstpage | A69 | en_US |
dc.relation.lastpage | 1 | en_US |
dc.relation.numberofpages | 30 | en_US |
dc.relation.article | A69 | en_US |
dc.type.referee | REF_1 | en_US |
dc.description.numberofauthors | 28 | en_US |
dc.description.international | sì | en_US |
dc.contributor.country | ITA | en_US |
dc.contributor.country | USA | en_US |
dc.contributor.country | GBR | en_US |
dc.contributor.country | FRA | en_US |
dc.contributor.country | DEU | en_US |
dc.contributor.country | ESP | en_US |
dc.contributor.country | AUS | en_US |
dc.contributor.country | CHL | en_US |
dc.contributor.country | JPN | en_US |
dc.contributor.country | NLD | en_US |
dc.relation.scientificsector | FIS/05 - ASTRONOMIA E ASTROFISICA | en_US |
dc.relation.journal | ASTRONOMY & ASTROPHYSICS | en_US |
dc.type.miur | 262 Articolo in rivista | - |
dc.identifier.adsbibcode | 2020A&A...633A..69H | en_US |
dc.relation.ercsector | ERC sectors::Physical Sciences and Engineering | en_US |
dc.description.apc | no | en_US |
dc.description.oa | 1 – prodotto con file in versione Open Access (allegare il file al passo 5-Carica) | en_US |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.openairetype | Article | - |
item.languageiso639-1 | en | - |
item.cerifentitytype | Publications | - |
item.grantfulltext | open | - |
item.fulltext | With Fulltext | - |
crisitem.author.dept | O.A. Padova | - |
crisitem.author.orcid | 0000-0002-3585-866X | - |
crisitem.journal.journalissn | 0004-6361 | - |
crisitem.journal.ance | E016240 | - |
Appears in Collections: | 1.01 Articoli in rivista |
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File | Description | Size | Format | |
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aa34878-18.pdf | PDF editoriale | 3.77 MB | Adobe PDF | View/Open |
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